Realtime test failure

LTP Mitani 2 participants 13 messages Nov 15, 2010 – Nov 19, 2010 1 message not in the archive

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Mitani

author

2010-11-15 02:54 UTC #0 lore raw

Hi,

"realtime" build failed in my system with git "ltp-f388d33.tar.gz":
------------<RHEL4.8 - x86>
make[2]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime' make -C lib -f "/home/LTP/ltp-dev-20101112/testcases/realtime/lib/Makefile" all
make[3]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime/lib'
gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include -I../../../include -I../../../include -c -o librttest.o librttest.c In file included from librttest.c:43:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librttest.h: In function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librttest.h:119 : warning: implicit declaration of function `__sync_add_and_fetch' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include -I../../../include -I../../../include -c -o libstats.o libstats.c In file included from libstats.c:47:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librttest.h: In function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librttest.h:119 : warning: implicit declaration of function `__sync_add_and_fetch'

if [ -z "librttest.o libstats.o" ] ; then \
	echo "Cowardly refusing to create empty archive"; \
	exit 1; \

fi
ar -rc "librealtime.a" librttest.o libstats.o
ranlib "librealtime.a"
make[3]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime/lib'
make[3]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func'
make[4]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include -I../../../../include -I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realtime/lib -L../../../../lib
async_handler.c -lrealtime -lpthread -lrt -lm -o async_handler
In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h: In function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:119:
warning: implicit declaration of function __sync_add_and_fetch' /home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(librttest.o) (.text+0x1a7): In function create_thread':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librttest.h:119 : undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
make[4]: *** [async_handler] Error 1
make[4]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler' make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime' make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases'
make: *** [testcases-all] Error 2
------------

"realtime" build failed in:
------------
RHEL4.8 -- x86, x86_64, ia64
RHEL5.4 -- x86
------------

"realtime" build succeeded in:
------------
RHEL5.4 -- x86_64, ia64
------------

It is caused by "__sync_add_and_fetch".

In following URL, "__sync_add_and_fetch" is "built-in functions for atomic memory access". And It is provided in "gcc":
http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Atomic-Builtins.html

There is "__sync_add_and_fetch" in gcc4.1.2 (It is the gcc of RHEL5.1 - RHEL5.4).
And there is not "__sync_add_and_fetch" in gcc3.4.6 (It is the gcc of RHEL4.8)

In addition, "__sync_add_and_fetch" is for 64 bit environment.

http://stackoverflow.com/questions/130740/link-error-when-compiling-gcc-atom
ic-operation-in-32-bit-mode

http://gcc.gnu.org/wiki/Atomic

Perhaps, the judgment that "realtime" must be built or not depends on gcc's version (> 4.0) and 64 bits environment, I think.

Regards--

-Tomonori Mitani

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Mitani

author

2010-11-15 05:13 UTC #2 lore raw

Quoted 123 lines

-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 12:03 PM
To: Mitani
Subject: Re: [LTP] Realtime test failure
Quoted 5 lines · Mitani
Hi,
"realtime" build failed in my system with git "ltp-f388d33.tar.gz":
------------<RHEL4.8 - x86>
make[2]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
Quoted 1 line
make -C lib -f
"/home/LTP/ltp-dev-20101112/testcases/realtime/lib/Makefile"
Quoted 8 lines
all
make[3]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime/lib' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
(quoted diff) +0 -2
-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
-I../../../include -I../../../include  -c -o librttest.o librttest.c
In file included from librttest.c:43:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte st.h: In
Quoted 2 lines
function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte st.h:119
Quoted 6 lines
: warning: implicit declaration of function `__sync_add_and_fetch' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
(quoted diff) +0 -2
-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
-I../../../include -I../../../include  -c -o libstats.o libstats.c
In file included from libstats.c:47:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte st.h: In
Quoted 2 lines
function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte st.h:119
Quoted 14 lines
: warning: implicit declaration of function `__sync_add_and_fetch'
if [ -z "librttest.o libstats.o" ] ; then \
       echo "Cowardly refusing to create empty archive"; \
       exit 1; \
fi
ar -rc "librealtime.a" librttest.o libstats.o
ranlib "librealtime.a"
make[3]: Leaving directory /home/LTP/ltp-dev-20101112/testcases/realtime/lib' make[3]: Entering directory /home/LTP/ltp-dev-20101112/testcases/realtime/func' make[4]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
Review
Quoted 3 lines
(quoted diff) +0 -3
-I/home/LTP/ltp-dev-20101112/testcases/realtime/include
-I../../../../include -I../../../../include
-L/home/LTP/ltp-dev-20101112/testcases/realtime/lib
-L../../../../lib
Quoted 3 lines
async_handler.c -lrealtime -lpthread -lrt -lm -o async_handler
In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
In
Quoted 2 lines
function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11 9:
Quoted 2 lines
warning: implicit declaration of function `__sync_add_and_fetch'
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(libr ttest.o)
Quoted 2 lines
(.text+0x1a7): In function `create_thread':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte st.h:119
Quoted 10 lines
: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
make[4]: *** [async_handler] Error 1
make[4]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler' make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func' make[2]: *** [all] Error 2
make[2]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
Quoted 16 lines
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases'
make: *** [testcases-all] Error 2
------------
"realtime" build failed in:
------------
RHEL4.8 -- x86, x86_64, ia64
RHEL5.4 -- x86
------------
"realtime" build succeeded in:
------------
RHEL5.4 -- x86_64, ia64
------------
Quoted 7 lines
It is caused by "__sync_add_and_fetch".
In following URL, "__sync_add_and_fetch" is "built-in functions for atomic memory access". And It is provided in "gcc":
http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Atomic-Builtins.html
There is "__sync_add_and_fetch" in gcc4.1.2 (It is the gcc of RHEL5.1
-
Quoted 7 lines
RHEL5.4).
And there is not "__sync_add_and_fetch" in gcc3.4.6 (It is the gcc of RHEL4.8)
In addition, "__sync_add_and_fetch" is for 64 bit environment.
http://stackoverflow.com/questions/130740/link-error-when-compiling-
gcc-atom
Quoted 4 lines
ic-operation-in-32-bit-mode
http://gcc.gnu.org/wiki/Atomic

Quoted 7 lines

Quoted 2 lines
Perhaps, the judgment that "realtime" must be built or not depends on gcc's version (> 4.0) and 64 bits environment, I think.
Could you please attach your testcases/realtime/config.log and testcases/realtime/include/realtime_config.h ? Thanks,
-Garrett

I understood.
Thank you and sorry for my insufficient information.

I attach following files:
- config.log (RHEL4.8-x86)
- realtime_config.h (RHEL4.8-x86)
- config.log (RHEL5.5-x86)
- realtime_config.h (RHEL5.5-x86)

Thank you--

-Tomonori Mitani

_______________________________________________
Ltp-list mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/ltp-list

Garrett Cooper

2010-11-15 05:20 UTC #3 lore raw

2010/11/14 Mitani <[email protected]>:

Quoted 132 lines

Quoted 123 lines
-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 12:03 PM
To: Mitani
Subject: Re: [LTP] Realtime test failure
Quoted 5 lines · Mitani
Hi,
"realtime" build failed in my system with git "ltp-f388d33.tar.gz":
------------<RHEL4.8 - x86>
make[2]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
Quoted 1 line
make -C lib -f
"/home/LTP/ltp-dev-20101112/testcases/realtime/lib/Makefile"
Quoted 8 lines
all
make[3]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime/lib' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
(quoted diff) +0 -2
-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
-I../../../include -I../../../include  -c -o librttest.o librttest.c
In file included from librttest.c:43:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte st.h: In
Quoted 2 lines
function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte st.h:119
Quoted 6 lines
: warning: implicit declaration of function `__sync_add_and_fetch' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
(quoted diff) +0 -2
-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
-I../../../include -I../../../include  -c -o libstats.o libstats.c
In file included from libstats.c:47:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte st.h: In
Quoted 2 lines
function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte st.h:119
Quoted 14 lines
: warning: implicit declaration of function `__sync_add_and_fetch' if [ -z "librttest.o libstats.o" ] ; then \
echo "Cowardly refusing to create empty archive"; \
exit 1; \
fi
ar -rc "librealtime.a" librttest.o libstats.o
ranlib "librealtime.a"
make[3]: Leaving directory /home/LTP/ltp-dev-20101112/testcases/realtime/lib' make[3]: Entering directory /home/LTP/ltp-dev-20101112/testcases/realtime/func' make[4]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
Review
Quoted 3 lines
(quoted diff) +0 -3
-I/home/LTP/ltp-dev-20101112/testcases/realtime/include
-I../../../../include -I../../../../include
-L/home/LTP/ltp-dev-20101112/testcases/realtime/lib
-L../../../../lib
Quoted 3 lines
async_handler.c -lrealtime -lpthread -lrt -lm -o async_handler In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
In
Quoted 2 lines
function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11 9:
Quoted 2 lines
warning: implicit declaration of function `__sync_add_and_fetch'
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(libr ttest.o)
Quoted 2 lines
(.text+0x1a7): In function `create_thread':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte st.h:119
Quoted 10 lines
: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
make[4]: *** [async_handler] Error 1
make[4]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler' make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func' make[2]: *** [all] Error 2
make[2]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
Quoted 16 lines
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases'
make: *** [testcases-all] Error 2
------------
"realtime" build failed in:
------------
RHEL4.8 -- x86, x86_64, ia64
RHEL5.4 -- x86
------------
"realtime" build succeeded in:
------------
RHEL5.4 -- x86_64, ia64
------------
Quoted 7 lines
It is caused by "__sync_add_and_fetch".
In following URL, "__sync_add_and_fetch" is "built-in functions for atomic memory access". And It is provided in "gcc":
http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Atomic-Builtins.html
There is "__sync_add_and_fetch" in gcc4.1.2 (It is the gcc of RHEL5.1
-
Quoted 7 lines
RHEL5.4).
And there is not "__sync_add_and_fetch" in gcc3.4.6 (It is the gcc of RHEL4.8)
In addition, "__sync_add_and_fetch" is for 64 bit environment.
http://stackoverflow.com/questions/130740/link-error-when-compiling-
gcc-atom
Quoted 4 lines
ic-operation-in-32-bit-mode
http://gcc.gnu.org/wiki/Atomic
Quoted 7 lines
Quoted 2 lines
Perhaps, the judgment that "realtime" must be built or not depends on gcc's version (> 4.0) and 64 bits environment, I think.
Could you please attach your testcases/realtime/config.log and testcases/realtime/include/realtime_config.h ? Thanks,
-Garrett

Quoted 8 lines

I understood.
Thank you and sorry for my insufficient information.
I attach following files:
- config.log (RHEL4.8-x86)
- realtime_config.h (RHEL4.8-x86)
- config.log (RHEL5.5-x86)
- realtime_config.h (RHEL5.5-x86)

Could you please try compiling the following C sources in both scenarios?
Thanks,
-Garrett

#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>

int main(void) {
        char *c;
        return __sync_add_and_fetch(c, 1);
}

Mitani

author

2010-11-15 06:29 UTC #4 lore raw

Quoted 171 lines

-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 2:20 PM
To: Mitani
Cc: [email protected]; 當座健市
Subject: Re: [LTP] Realtime test failure
2010/11/14 Mitani <[email protected]>:
Quoted 13 lines
Quoted 13 lines
-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 12:03 PM
To: Mitani
Subject: Re: [LTP] Realtime test failure
Quoted 5 lines · Mitani
Hi,
"realtime" build failed in my system with git "ltp-f388d33.tar.gz":
------------<RHEL4.8 - x86>
make[2]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
Quoted 8 lines
Quoted 8 lines
Quoted 1 line
make -C lib -f
"/home/LTP/ltp-dev-20101112/testcases/realtime/lib/Makefile"
Review
Quoted 6 lines
all
make[3]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime/lib' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
(quoted diff) +0 -2
-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
-I../../../include -I../../../include  -c -o librttest.o
librttest.c
Quoted 3 lines
Quoted 3 lines
Quoted 2 lines
In file included from librttest.c:43:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
Quoted 4 lines
Quoted 4 lines
st.h: In
Quoted 2 lines
function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
Quoted 8 lines
Quoted 8 lines
st.h:119
Quoted 6 lines
: warning: implicit declaration of function `__sync_add_and_fetch' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
(quoted diff) +0 -2
-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
-I../../../include -I../../../include  -c -o libstats.o libstats.c
In file included from libstats.c:47:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
Quoted 4 lines
Quoted 4 lines
st.h: In
Quoted 2 lines
function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
Quoted 14 lines
Quoted 14 lines
st.h:119
Quoted 13 lines
: warning: implicit declaration of function `__sync_add_and_fetch'
if [ -z "librttest.o libstats.o" ] ; then \
       echo "Cowardly refusing to create empty archive"; \
       exit 1; \
fi
ar -rc "librealtime.a" librttest.o libstats.o ranlib "librealtime.a"
make[3]: Leaving directory /home/LTP/ltp-dev-20101112/testcases/realtime/lib' make[3]: Entering directory /home/LTP/ltp-dev-20101112/testcases/realtime/func' make[4]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
Quoted 8 lines
Quoted 8 lines
Review
Quoted 4 lines
gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
(quoted diff) +0 -3
-I/home/LTP/ltp-dev-20101112/testcases/realtime/include
-I../../../../include -I../../../../include
-L/home/LTP/ltp-dev-20101112/testcases/realtime/lib
-L../../../../lib
Quoted 3 lines
async_handler.c -lrealtime -lpthread -lrt -lm -o async_handler
In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
Quoted 4 lines
Quoted 4 lines
In
Quoted 2 lines
function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11
Quoted 4 lines
Quoted 4 lines
9:
Quoted 2 lines
warning: implicit declaration of function `__sync_add_and_fetch'
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(libr
Quoted 4 lines
Quoted 4 lines
ttest.o)
Quoted 2 lines
(.text+0x1a7): In function `create_thread':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
Quoted 6 lines
Quoted 6 lines
st.h:119
Quoted 5 lines
: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
make[4]: *** [async_handler] Error 1
make[4]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
Quoted 22 lines
Quoted 22 lines
Quoted 5 lines
make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func' make[2]: *** [all] Error 2
make[2]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
Quoted 16 lines
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases'
make: *** [testcases-all] Error 2
------------
"realtime" build failed in:
------------
RHEL4.8 -- x86, x86_64, ia64
RHEL5.4 -- x86
------------
"realtime" build succeeded in:
------------
RHEL5.4 -- x86_64, ia64
------------
Quoted 11 lines
Quoted 5 lines
Quoted 4 lines
It is caused by "__sync_add_and_fetch".
In following URL, "__sync_add_and_fetch" is "built-in functions for atomic memory access". And It is provided in "gcc":
http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Atomic-Builtins.html
Quoted 5 lines
Quoted 2 lines
There is "__sync_add_and_fetch" in gcc4.1.2 (It is the gcc of RHEL5.1
-
Quoted 2 lines
RHEL5.4).
And there is not "__sync_add_and_fetch" in gcc3.4.6 (It is the gcc
of
Quoted 6 lines
Quoted 6 lines
Quoted 5 lines
RHEL4.8)
In addition, "__sync_add_and_fetch" is for 64 bit environment.
http://stackoverflow.com/questions/130740/link-error-when-compiling-
Quoted 6 lines
Quoted 6 lines
gcc-atom
Quoted 5 lines
ic-operation-in-32-bit-mode
http://gcc.gnu.org/wiki/Atomic
Perhaps, the judgment that "realtime" must be built or not depends
on
Quoted 8 lines
Quoted 6 lines
Quoted 1 line
gcc's version (> 4.0) and 64 bits environment, I think.
Could you please attach your testcases/realtime/config.log and testcases/realtime/include/realtime_config.h ? Thanks,
-Garrett
Quoted 8 lines
I understood.
Thank you and sorry for my insufficient information.
I attach following files:
- config.log (RHEL4.8-x86)
- realtime_config.h (RHEL4.8-x86)
- config.log (RHEL5.5-x86)
- realtime_config.h (RHEL5.5-x86)
Could you please try compiling the following C sources in both
scenarios?
Thanks,
-Garrett

Quoted 8 lines

#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
        char *c;
        return __sync_add_and_fetch(c, 1);
}

I was going to compile the sent source in RHEL4.8/5.5-x86, but failed.

------------<RHEL4.8-x86>
[root@RHEL48-LTP-x86 async_handler]# cat realtime-test.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>

int main(void) {
        char *c;
        return __sync_add_and_fetch(c, 1); }

[root@RHEL48-LTP-x86 async_handler]# gcc realtime-test.c -o realtime-test
/tmp/cciHVx8b.o(.text+0x25): In function `main':
: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
[root@RHEL48-LTP-x86 async_handler]#
[root@RHEL48-LTP-x86 async_handler]# gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D
_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include -I../../../../include
-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realtime/lib -L../../../..
/lib realtime-test.c -lrealtime -lpthread -lrt -lm -o realtime-test
realtime-test.c: In function `main':
realtime-test.c:7: warning: implicit declaration of function `__sync_add_and_fetch'
realtime-test.c:6: warning: 'c' might be used uninitialized in this function
/tmp/ccIDckLk.o(.text+0x10): In function `main':
/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/realtime-test.c:7: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
[root@RHEL48-LTP-x86 async_handler]#
------------

------------<RHEL5.5-x86>
[root@RHEL55-LTP-x86 async_handler]# cat realtime-test.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>

int main(void) {
        char *c;
        return __sync_add_and_fetch(c, 1); }

[root@RHEL55-LTP-x86 async_handler]# gcc realtime-test.c -o realtime-test
/tmp/ccK8hmPs.o: In function `main':
realtime-test.c:(.text+0x20): undefined reference to `__sync_add_and_fetch_1'
collect2: ld returned 1 exit status
[root@RHEL55-LTP-x86 async_handler]# gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D
_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include -I../../../../include
-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realtime/lib -L../../../..
/lib realtime-test.c -lrealtime -lpthread -lrt -lm -o realtime-test
realtime-test.c: In function 'main':
realtime-test.c:7: warning: 'c' is used uninitialized in this function
/tmp/ccKUnocB.o: In function `main':
/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/realtime-test.c:7: undefined reference to `__sync_add_and_fetch_1'
collect2: ld returned 1 exit status
[root@RHEL55-LTP-x86 async_handler]#
------------

Regards--

-Tomonori Mitani

Garrett Cooper

2010-11-15 15:57 UTC #5 lore raw

Quoted 221 lines · Mitani

Quoted 171 lines
-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 2:20 PM
To: Mitani
Cc: [email protected]; 當座健市
Subject: Re: [LTP] Realtime test failure
2010/11/14 Mitani <[email protected]>:
Quoted 13 lines
Quoted 13 lines
-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 12:03 PM
To: Mitani
Subject: Re: [LTP] Realtime test failure
Quoted 5 lines · Mitani
Hi,
"realtime" build failed in my system with git "ltp-f388d33.tar.gz":
------------<RHEL4.8 - x86>
make[2]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
Quoted 8 lines
Quoted 8 lines
Quoted 1 line
make -C lib -f
"/home/LTP/ltp-dev-20101112/testcases/realtime/lib/Makefile"
Review
Quoted 6 lines
all
make[3]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime/lib' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
(quoted diff) +0 -2
-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
-I../../../include -I../../../include  -c -o librttest.o
librttest.c
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In file included from librttest.c:43:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h: In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h:119
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: warning: implicit declaration of function `__sync_add_and_fetch' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
(quoted diff) +0 -2
-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
-I../../../include -I../../../include  -c -o libstats.o libstats.c
In file included from libstats.c:47:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
Quoted 4 lines
Quoted 4 lines
st.h: In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h:119
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: warning: implicit declaration of function `__sync_add_and_fetch' if [ -z "librttest.o libstats.o" ] ; then \
echo "Cowardly refusing to create empty archive"; \
exit 1; \
fi
ar -rc "librealtime.a" librttest.o libstats.o
ranlib "librealtime.a"
make[3]: Leaving directory /home/LTP/ltp-dev-20101112/testcases/realtime/lib' make[3]: Entering directory /home/LTP/ltp-dev-20101112/testcases/realtime/func' make[4]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
Quoted 8 lines
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Review
Quoted 4 lines
gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
(quoted diff) +0 -3
-I/home/LTP/ltp-dev-20101112/testcases/realtime/include
-I../../../../include -I../../../../include
-L/home/LTP/ltp-dev-20101112/testcases/realtime/lib
-L../../../../lib
Quoted 3 lines
async_handler.c -lrealtime -lpthread -lrt -lm -o async_handler In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
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In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11
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9:
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warning: implicit declaration of function `__sync_add_and_fetch'
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(libr
Quoted 4 lines
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ttest.o)
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(.text+0x1a7): In function `create_thread':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
Quoted 6 lines
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st.h:119
Quoted 5 lines
: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
make[4]: *** [async_handler] Error 1
make[4]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
Quoted 22 lines
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make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func' make[2]: *** [all] Error 2
make[2]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
Quoted 16 lines
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases'
make: *** [testcases-all] Error 2
------------
"realtime" build failed in:
------------
RHEL4.8 -- x86, x86_64, ia64
RHEL5.4 -- x86
------------
"realtime" build succeeded in:
------------
RHEL5.4 -- x86_64, ia64
------------
Quoted 11 lines
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It is caused by "__sync_add_and_fetch".
In following URL, "__sync_add_and_fetch" is "built-in functions for atomic memory access". And It is provided in "gcc":
http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Atomic-Builtins.html
Quoted 5 lines
Quoted 2 lines
There is "__sync_add_and_fetch" in gcc4.1.2 (It is the gcc of RHEL5.1
-
Quoted 2 lines
RHEL5.4).
And there is not "__sync_add_and_fetch" in gcc3.4.6 (It is the gcc
of
Quoted 6 lines
Quoted 6 lines
Quoted 5 lines
RHEL4.8)
In addition, "__sync_add_and_fetch" is for 64 bit environment.
http://stackoverflow.com/questions/130740/link-error-when-compiling-
Quoted 6 lines
Quoted 6 lines
gcc-atom
Quoted 5 lines
ic-operation-in-32-bit-mode
http://gcc.gnu.org/wiki/Atomic
Perhaps, the judgment that "realtime" must be built or not depends
on
Quoted 8 lines
Quoted 6 lines
Quoted 1 line
gcc's version (> 4.0) and 64 bits environment, I think.
Could you please attach your testcases/realtime/config.log and testcases/realtime/include/realtime_config.h ? Thanks,
-Garrett
Quoted 8 lines
I understood.
Thank you and sorry for my insufficient information.
I attach following files:
- config.log (RHEL4.8-x86)
- realtime_config.h (RHEL4.8-x86)
- config.log (RHEL5.5-x86)
- realtime_config.h (RHEL5.5-x86)
Could you please try compiling the following C sources in both scenarios?
Thanks,
-Garrett
Quoted 8 lines
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
char *c;
return __sync_add_and_fetch(c, 1);
}
I was going to compile the sent source in RHEL4.8/5.5-x86, but failed.
------------<RHEL4.8-x86>
[root@RHEL48-LTP-x86 async_handler]# cat realtime-test.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
char *c;
return __sync_add_and_fetch(c, 1); }
[root@RHEL48-LTP-x86 async_handler]# gcc realtime-test.c -o realtime-test
/tmp/cciHVx8b.o(.text+0x25): In function `main':
: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
[root@RHEL48-LTP-x86 async_handler]#
[root@RHEL48-LTP-x86 async_handler]# gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D
_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include -I../../../../include -I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realtime/lib -L../../../..
/lib realtime-test.c -lrealtime -lpthread -lrt -lm -o realtime-test
realtime-test.c: In function `main':
realtime-test.c:7: warning: implicit declaration of function `__sync_add_and_fetch'
realtime-test.c:6: warning: 'c' might be used uninitialized in this function
/tmp/ccIDckLk.o(.text+0x10): In function `main':
/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/realtime-test.c:7: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
[root@RHEL48-LTP-x86 async_handler]#
------------
------------<RHEL5.5-x86>
[root@RHEL55-LTP-x86 async_handler]# cat realtime-test.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
char *c;
return __sync_add_and_fetch(c, 1); }

Quoted 14 lines

[root@RHEL55-LTP-x86 async_handler]# gcc realtime-test.c -o realtime-test
/tmp/ccK8hmPs.o: In function `main':
realtime-test.c:(.text+0x20): undefined reference to `__sync_add_and_fetch_1'
collect2: ld returned 1 exit status
[root@RHEL55-LTP-x86 async_handler]# gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D
_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include -I../../../../include -I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realtime/lib -L../../../..
/lib realtime-test.c -lrealtime -lpthread -lrt -lm -o realtime-test
realtime-test.c: In function 'main':
realtime-test.c:7: warning: 'c' is used uninitialized in this function
/tmp/ccKUnocB.o: In function `main':
/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/realtime-test.c:7: undefined reference to `__sync_add_and_fetch_1'
collect2: ld returned 1 exit status
[root@RHEL55-LTP-x86 async_handler]#

Not sure why but it incorrectly passed on your machine:

configure:5186: checking Checking for __sync_add_and_fetch gcc builtin function configure:5216: gcc -c -g -O2 conftest.c >&5
configure:5222: $? = 0

23 AC_MSG_CHECKING([Checking for __sync_add_and_fetch gcc builtin function]) 24 AC_TRY_COMPILE([
25 #ifndef _GNU_SOURCE
26 #define _GNU_SOURCE
27 #endif
28 #include <stdlib.h>],[int main(void) {
29 char *c;
30 return __sync_add_and_fetch(c, 1);
31 }],[has___sync_add_and_fetch=yes])
32 if test "x$has___sync_add_and_fetch" = xyes; then
33 AC_DEFINE(HAVE___SYNC_ADD_AND_FETCH,1,[Define to 1 if you
have the __ sync_add_and_fetch gcc builtin function])
34 AC_MSG_RESULT(yes)
35 else
36 AC_MSG_RESULT(no)
37 fi

Whereas it didn't on mine:

248 configure:4777: checking Checking for __sync_add_and_fetch gcc
builtin funct ion
249 configure:4797: gcc -c -g -O2 conftest.c >&5
250 configure:4797: $? = 0

There was a potential problem with the macro though (I keep on
forgetting that AC_TRY_COMPILE and AC_COMPILE_IFELSE work predefine main() with the block of code provided), so please let me know if things work for you.
Thanks,
-Garrett

Mitani

author

2010-11-16 08:29 UTC #6 lore raw

Quoted 307 lines

-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Tuesday, November 16, 2010 12:58 AM
To: Mitani
Cc: [email protected]
Subject: Re: [LTP] Realtime test failure
Quoted 32 lines · Mitani
Quoted 32 lines
-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 2:20 PM
To: Mitani
Cc: [email protected]; 當座健市
Subject: Re: [LTP] Realtime test failure
2010/11/14 Mitani <[email protected]>:
Quoted 13 lines
Quoted 13 lines
-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 12:03 PM
To: Mitani
Subject: Re: [LTP] Realtime test failure
Quoted 5 lines · Mitani
Hi,
"realtime" build failed in my system with git "ltp-f388d33.tar.gz":
------------<RHEL4.8 - x86>
make[2]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
Quoted 8 lines
Quoted 8 lines
Quoted 1 line
make -C lib -f
"/home/LTP/ltp-dev-20101112/testcases/realtime/lib/Makefile"
Review
Quoted 6 lines
all
make[3]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime/lib' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
(quoted diff) +0 -2
-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
-I../../../include -I../../../include  -c -o librttest.o
librttest.c
Quoted 4 lines
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In file included from librttest.c:43:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
Quoted 5 lines
Quoted 5 lines
Quoted 4 lines
Quoted 4 lines
st.h: In
Quoted 2 lines
function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
Quoted 5 lines
Quoted 5 lines
Quoted 5 lines
Quoted 5 lines
st.h:119
Review
Quoted 4 lines
: warning: implicit declaration of function `__sync_add_and_fetch' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
(quoted diff) +0 -2
-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
-I../../../include -I../../../include  -c -o libstats.o
libstats.c
Quoted 4 lines
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In file included from libstats.c:47:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h: In
Quoted 2 lines
function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
Quoted 23 lines
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Quoted 14 lines
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st.h:119
Quoted 13 lines
: warning: implicit declaration of function `__sync_add_and_fetch'
if [ -z "librttest.o libstats.o" ] ; then \
       echo "Cowardly refusing to create empty archive"; \
       exit 1; \
fi
ar -rc "librealtime.a" librttest.o libstats.o ranlib "librealtime.a"
make[3]: Leaving directory /home/LTP/ltp-dev-20101112/testcases/realtime/lib' make[3]: Entering directory /home/LTP/ltp-dev-20101112/testcases/realtime/func' make[4]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
Quoted 8 lines
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Review
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gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
(quoted diff) +0 -3
-I/home/LTP/ltp-dev-20101112/testcases/realtime/include
-I../../../../include -I../../../../include
-L/home/LTP/ltp-dev-20101112/testcases/realtime/lib
-L../../../../lib
Quoted 3 lines
async_handler.c -lrealtime -lpthread -lrt -lm -o async_handler
In file included from async_handler.c:42:
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/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
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In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11
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9:
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warning: implicit declaration of function `__sync_add_and_fetch'
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(libr
Quoted 5 lines
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ttest.o)
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(.text+0x1a7): In function `create_thread':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
Quoted 7 lines
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st.h:119
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: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
make[4]: *** [async_handler] Error 1
make[4]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
Quoted 8 lines
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make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func' make[2]: *** [all] Error 2
make[2]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
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make[1]: *** [all] Error 2
make[1]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases'
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make: *** [testcases-all] Error 2
------------
"realtime" build failed in:
------------
RHEL4.8 -- x86, x86_64, ia64
RHEL5.4 -- x86
------------
Quoted 8 lines
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"realtime" build succeeded in:
------------
RHEL5.4 -- x86_64, ia64
------------
It is caused by "__sync_add_and_fetch".
In following URL, "__sync_add_and_fetch" is "built-in functions
for
Quoted 6 lines
Quoted 3 lines
Quoted 2 lines
Quoted 2 lines
Quoted 1 line
atomic memory access". And It is provided in "gcc":
http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Atomic-Builtins.html
Quoted 2 lines
Quoted 2 lines
Quoted 2 lines
Quoted 2 lines
There is "__sync_add_and_fetch" in gcc4.1.2 (It is the gcc of
RHEL5.1
Quoted 3 lines
Quoted 3 lines
Quoted 3 lines
Quoted 3 lines
-
Quoted 2 lines
RHEL5.4).
And there is not "__sync_add_and_fetch" in gcc3.4.6 (It is the
gcc
Quoted 8 lines
Quoted 8 lines
of
Quoted 6 lines
Quoted 6 lines
Quoted 5 lines
RHEL4.8)
In addition, "__sync_add_and_fetch" is for 64 bit environment.
http://stackoverflow.com/questions/130740/link-error-when-compiling-
Quoted 47 lines
Quoted 29 lines
Quoted 6 lines
Quoted 6 lines
gcc-atom
Quoted 5 lines
ic-operation-in-32-bit-mode
http://gcc.gnu.org/wiki/Atomic
Perhaps, the judgment that "realtime" must be built or not depends
on
Quoted 8 lines
Quoted 6 lines
Quoted 1 line
gcc's version (> 4.0) and 64 bits environment, I think.
Could you please attach your testcases/realtime/config.log and testcases/realtime/include/realtime_config.h ? Thanks,
-Garrett
Quoted 8 lines
I understood.
Thank you and sorry for my insufficient information.
I attach following files:
- config.log (RHEL4.8-x86)
- realtime_config.h (RHEL4.8-x86)
- config.log (RHEL5.5-x86)
- realtime_config.h (RHEL5.5-x86)
Could you please try compiling the following C sources in both
scenarios?
Thanks,
-Garrett
Quoted 8 lines
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
        char *c;
        return __sync_add_and_fetch(c, 1);
}
I was going to compile the sent source in RHEL4.8/5.5-x86, but failed.
------------<RHEL4.8-x86>
[root@RHEL48-LTP-x86 async_handler]# cat realtime-test.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
Quoted 5 lines
int main(void) {
       char *c;
       return __sync_add_and_fetch(c, 1); }
[root@RHEL48-LTP-x86 async_handler]# gcc realtime-test.c -o
realtime-test
Quoted 5 lines
/tmp/cciHVx8b.o(.text+0x25): In function `main':
: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status [root@RHEL48-LTP-x86 async_handler]# [root@RHEL48-LTP-x86 async_handler]# gcc -g -O2 -g -O2
-fno-strict-aliasing -pipe -Wall -D
Quoted 1 line
_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include -I../../../../include
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-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/re
altime/lib -L../../../..
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/lib realtime-test.c -lrealtime -lpthread -lrt -lm -o realtime-test
realtime-test.c: In function `main':
realtime-test.c:7: warning: implicit declaration of function
`__sync_add_and_fetch'
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realtime-test.c:6: warning: 'c' might be used uninitialized in this
function
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/tmp/ccIDckLk.o(.text+0x10): In function `main':
/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/rea ltime-test.c:7: undefined reference to `__sync_add_and_fetch'
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collect2: ld returned 1 exit status
[root@RHEL48-LTP-x86 async_handler]#
------------
------------<RHEL5.5-x86>
[root@RHEL55-LTP-x86 async_handler]# cat realtime-test.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
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int main(void) {
       char *c;
       return __sync_add_and_fetch(c, 1); }
[root@RHEL55-LTP-x86 async_handler]# gcc realtime-test.c -o
realtime-test
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/tmp/ccK8hmPs.o: In function `main':
realtime-test.c:(.text+0x20): undefined reference to
`__sync_add_and_fetch_1'
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collect2: ld returned 1 exit status [root@RHEL55-LTP-x86 async_handler]# gcc -g -O2 -g -O2
-fno-strict-aliasing -pipe -Wall -D
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_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include -I../../../../include
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-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/re
altime/lib -L../../../..
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/lib realtime-test.c -lrealtime -lpthread -lrt -lm -o realtime-test
realtime-test.c: In function 'main':
realtime-test.c:7: warning: 'c' is used uninitialized in this function /tmp/ccKUnocB.o: In function `main':
/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/rea ltime-test.c:7: undefined reference to `__sync_add_and_fetch_1'
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collect2: ld returned 1 exit status
[root@RHEL55-LTP-x86 async_handler]#
Not sure why but it incorrectly passed on your machine:
configure:5186: checking Checking for __sync_add_and_fetch gcc builtin function
configure:5216: gcc -c -g -O2 conftest.c >&5 configure:5222: $? = 0
23 AC_MSG_CHECKING([Checking for __sync_add_and_fetch gcc builtin function])
24 AC_TRY_COMPILE([
25 #ifndef _GNU_SOURCE
26 #define _GNU_SOURCE
27 #endif
28 #include <stdlib.h>],[int main(void) {
29 char *c;
30 return __sync_add_and_fetch(c, 1);
31 }],[has___sync_add_and_fetch=yes])
32 if test "x$has___sync_add_and_fetch" = xyes; then
33 AC_DEFINE(HAVE___SYNC_ADD_AND_FETCH,1,[Define to 1 if you
have the __ sync_add_and_fetch gcc builtin function])
34 AC_MSG_RESULT(yes)
35 else
36 AC_MSG_RESULT(no)
37 fi
Whereas it didn't on mine:
248 configure:4777: checking Checking for __sync_add_and_fetch gcc
builtin funct ion
249 configure:4797: gcc -c -g -O2 conftest.c >&5
250 configure:4797: $? = 0

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There was a potential problem with the macro though (I keep on
forgetting that AC_TRY_COMPILE and AC_COMPILE_IFELSE work predefine main() with the block of code provided), so please let me know if things work for you.
Thanks,
-Garrett

I attached same options by obeying "config.log".
And I confirmed that "conftest.c" could be successfully compiled by manual operation:
------------
[root@RHEL48-LTP-x86 async_handler]# pwd /home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler [root@RHEL48-LTP-x86 async_handler]# ll
total 36

-rw-rw-r--  1 root root 1045 Nov 12 02:19 Makefile
-rw-rw-r--  1 root root 5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root 4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root 6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root  147 Nov 15 15:14 conftest.c
-rwxrwxr-x  1 root root  333 Nov 12 02:19 run_auto.sh

[root@RHEL48-LTP-x86 async_handler]# cat conftest.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>

int main(void) {
        char *c;
        return __sync_add_and_fetch(c, 1); }

[root@RHEL48-LTP-x86 async_handler]# gcc -c -g -O2 conftest.c [root@RHEL48-LTP-x86 async_handler]# echo $?
0
[root@RHEL48-LTP-x86 async_handler]# ll
total 40

-rw-rw-r--  1 root root 1045 Nov 12 02:19 Makefile
-rw-rw-r--  1 root root 5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root 4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root 6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root  147 Nov 15 15:14 conftest.c
-rw-r--r--  1 root root 2596 Nov 16 16:24 conftest.o
-rwxrwxr-x  1 root root  333 Nov 12 02:19 run_auto.sh

[root@RHEL48-LTP-x86 async_handler]#
------------

I tried build async_handler.c with "-c" option by manual operation
according to "conftest.c", and it succeeded:
------------
[root@RHEL48-LTP-x86 async_handler]# gcc -c -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include -I../../../../include -I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realtime/lib -L../../../../lib async_handler.c -lrealtime -lpthread -lrt -lm -o async_handler
In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h: In function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:119: warning: implicit declaration of function `__sync_add_and_fetch'
gcc: -lrealtime: linker input file unused because linking not done
gcc: -lpthread: linker input file unused because linking not done
gcc: -lrt: linker input file unused because linking not done
gcc: -lm: linker input file unused because linking not done
[root@RHEL48-LTP-x86 async_handler]# echo $?
0
[root@RHEL48-LTP-x86 async_handler]# ll
total 56

-rw-rw-r--  1 root root  1045 Nov 12 02:19 Makefile
-rw-r--r--  1 root root 12612 Nov 16 16:27 async_handler
-rw-rw-r--  1 root root  5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root  4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root  6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root   147 Nov 15 15:14 conftest.c
-rw-r--r--  1 root root  2596 Nov 16 16:24 conftest.o
-rwxrwxr-x  1 root root   333 Nov 12 02:19 run_auto.sh

[root@RHEL48-LTP-x86 async_handler]#
------------

But above build is not with linkage by "-c" option.
With linkage, it failed:
------------
[root@RHEL48-LTP-x86 async_handler]# gcc -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include -I../../../../include -I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realtime/lib -L../../../../lib async_handler.c -lrealtime -lpthread -lrt -lm -o async_handler
In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h: In function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:119: warning: implicit declaration of function __sync_add_and_fetch' /home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(librttest.o)(.text+0x1a7): In function create_thread':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librttest.h:119: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
[root@RHEL48-LTP-x86 async_handler]#
------------

I think that the check of "__sync_add_and_fetch" by "conftest.c" must be done without "-c" option.

Regards--

-Tomonori Mitani

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Garrett Cooper

2010-11-16 17:03 UTC #7 lore raw

Quoted 392 lines · Mitani

Quoted 307 lines
-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Tuesday, November 16, 2010 12:58 AM
To: Mitani
Cc: [email protected]
Subject: Re: [LTP] Realtime test failure
Quoted 32 lines · Mitani
Quoted 32 lines
-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 2:20 PM
To: Mitani
Cc: [email protected]; 當座健市
Subject: Re: [LTP] Realtime test failure
2010/11/14 Mitani <[email protected]>:
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-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 12:03 PM
To: Mitani
Subject: Re: [LTP] Realtime test failure
Quoted 5 lines · Mitani
Hi,
"realtime" build failed in my system with git "ltp-f388d33.tar.gz":
------------<RHEL4.8 - x86>
make[2]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
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make -C lib -f
"/home/LTP/ltp-dev-20101112/testcases/realtime/lib/Makefile"
Review
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all
make[3]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime/lib' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
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-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
-I../../../include -I../../../include  -c -o librttest.o
librttest.c
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In file included from librttest.c:43:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h: In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h:119
Review
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: warning: implicit declaration of function `__sync_add_and_fetch' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
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-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
-I../../../include -I../../../include  -c -o libstats.o
libstats.c
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In file included from libstats.c:47:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h: In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h:119
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: warning: implicit declaration of function `__sync_add_and_fetch' if [ -z "librttest.o libstats.o" ] ; then \
echo "Cowardly refusing to create empty archive"; \
exit 1; \
fi
ar -rc "librealtime.a" librttest.o libstats.o
ranlib "librealtime.a"
make[3]: Leaving directory /home/LTP/ltp-dev-20101112/testcases/realtime/lib' make[3]: Entering directory /home/LTP/ltp-dev-20101112/testcases/realtime/func' make[4]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
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Review
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gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
(quoted diff) +0 -3
-I/home/LTP/ltp-dev-20101112/testcases/realtime/include
-I../../../../include -I../../../../include
-L/home/LTP/ltp-dev-20101112/testcases/realtime/lib
-L../../../../lib
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async_handler.c -lrealtime -lpthread -lrt -lm -o async_handler In file included from async_handler.c:42:
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/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
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In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11
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9:
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warning: implicit declaration of function `__sync_add_and_fetch'
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(libr
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ttest.o)
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(.text+0x1a7): In function `create_thread':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h:119
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: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
make[4]: *** [async_handler] Error 1
make[4]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
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make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func' make[2]: *** [all] Error 2
make[2]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
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make[1]: *** [all] Error 2
make[1]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases'
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make: *** [testcases-all] Error 2
------------
"realtime" build failed in:
------------
RHEL4.8 -- x86, x86_64, ia64
RHEL5.4 -- x86
------------
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"realtime" build succeeded in:
------------
RHEL5.4 -- x86_64, ia64
------------
It is caused by "__sync_add_and_fetch".
In following URL, "__sync_add_and_fetch" is "built-in functions
for
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atomic memory access". And It is provided in "gcc":
http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Atomic-Builtins.html
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There is "__sync_add_and_fetch" in gcc4.1.2 (It is the gcc of
RHEL5.1
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-
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RHEL5.4).
And there is not "__sync_add_and_fetch" in gcc3.4.6 (It is the
gcc
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of
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RHEL4.8)
In addition, "__sync_add_and_fetch" is for 64 bit environment.
http://stackoverflow.com/questions/130740/link-error-when-compiling-
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gcc-atom
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ic-operation-in-32-bit-mode
http://gcc.gnu.org/wiki/Atomic
Perhaps, the judgment that "realtime" must be built or not depends
on
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gcc's version (> 4.0) and 64 bits environment, I think.
Could you please attach your testcases/realtime/config.log and testcases/realtime/include/realtime_config.h ? Thanks,
-Garrett
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I understood.
Thank you and sorry for my insufficient information.
I attach following files:
- config.log (RHEL4.8-x86)
- realtime_config.h (RHEL4.8-x86)
- config.log (RHEL5.5-x86)
- realtime_config.h (RHEL5.5-x86)
Could you please try compiling the following C sources in both scenarios?
Thanks,
-Garrett
Quoted 8 lines
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
char *c;
return __sync_add_and_fetch(c, 1);
}
I was going to compile the sent source in RHEL4.8/5.5-x86, but failed.
------------<RHEL4.8-x86>
[root@RHEL48-LTP-x86 async_handler]# cat realtime-test.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
char *c;
return __sync_add_and_fetch(c, 1); }
Quoted 1 line
[root@RHEL48-LTP-x86 async_handler]# gcc realtime-test.c -o
realtime-test
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/tmp/cciHVx8b.o(.text+0x25): In function `main':
: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status [root@RHEL48-LTP-x86 async_handler]# [root@RHEL48-LTP-x86 async_handler]# gcc -g -O2 -g -O2
-fno-strict-aliasing -pipe -Wall -D
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_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include -I../../../../include
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-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/re
altime/lib -L../../../..
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/lib realtime-test.c -lrealtime -lpthread -lrt -lm -o realtime-test realtime-test.c: In function `main':
realtime-test.c:7: warning: implicit declaration of function
`__sync_add_and_fetch'
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realtime-test.c:6: warning: 'c' might be used uninitialized in this
function
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/tmp/ccIDckLk.o(.text+0x10): In function `main':
/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/rea ltime-test.c:7: undefined reference to `__sync_add_and_fetch'
Quoted 14 lines
collect2: ld returned 1 exit status
[root@RHEL48-LTP-x86 async_handler]#
------------
------------<RHEL5.5-x86>
[root@RHEL55-LTP-x86 async_handler]# cat realtime-test.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
char *c;
return __sync_add_and_fetch(c, 1); }
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[root@RHEL55-LTP-x86 async_handler]# gcc realtime-test.c -o
realtime-test
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/tmp/ccK8hmPs.o: In function `main':
realtime-test.c:(.text+0x20): undefined reference to
`__sync_add_and_fetch_1'
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collect2: ld returned 1 exit status [root@RHEL55-LTP-x86 async_handler]# gcc -g -O2 -g -O2
-fno-strict-aliasing -pipe -Wall -D
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_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include -I../../../../include
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-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/re
altime/lib -L../../../..
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/lib realtime-test.c -lrealtime -lpthread -lrt -lm -o realtime-test realtime-test.c: In function 'main':
realtime-test.c:7: warning: 'c' is used uninitialized in this function /tmp/ccKUnocB.o: In function `main':
/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/rea ltime-test.c:7: undefined reference to `__sync_add_and_fetch_1'
Quoted 2 lines
collect2: ld returned 1 exit status
[root@RHEL55-LTP-x86 async_handler]#
Not sure why but it incorrectly passed on your machine:
configure:5186: checking Checking for __sync_add_and_fetch gcc builtin function
configure:5216: gcc -c -g -O2 conftest.c >&5 configure:5222: $? = 0
23 AC_MSG_CHECKING([Checking for __sync_add_and_fetch gcc builtin function])
24 AC_TRY_COMPILE([
25 #ifndef _GNU_SOURCE
26 #define _GNU_SOURCE
27 #endif
28 #include <stdlib.h>],[int main(void) {
29 char *c;
30 return __sync_add_and_fetch(c, 1);
31 }],[has___sync_add_and_fetch=yes])
32 if test "x$has___sync_add_and_fetch" = xyes; then
33 AC_DEFINE(HAVE___SYNC_ADD_AND_FETCH,1,[Define to 1 if you have the __ sync_add_and_fetch gcc builtin function]) 34 AC_MSG_RESULT(yes)
35 else
36 AC_MSG_RESULT(no)
37 fi
Whereas it didn't on mine:
248 configure:4777: checking Checking for __sync_add_and_fetch gcc builtin funct ion
249 configure:4797: gcc -c -g -O2 conftest.c >&5
250 configure:4797: $? = 0
Quoted 6 lines
There was a potential problem with the macro though (I keep on forgetting that AC_TRY_COMPILE and AC_COMPILE_IFELSE work predefine main() with the block of code provided), so please let me know if things work for you.
Thanks,
-Garrett
I attached same options by obeying "config.log".
And I confirmed that "conftest.c" could be successfully compiled by manual operation:
------------
[root@RHEL48-LTP-x86 async_handler]# pwd /home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler [root@RHEL48-LTP-x86 async_handler]# ll
total 36
(quoted diff) +0 -6
-rw-rw-r--  1 root root 1045 Nov 12 02:19 Makefile
-rw-rw-r--  1 root root 5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root 4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root 6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root  147 Nov 15 15:14 conftest.c
-rwxrwxr-x  1 root root  333 Nov 12 02:19 run_auto.sh
[root@RHEL48-LTP-x86 async_handler]# cat conftest.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
char *c;
return __sync_add_and_fetch(c, 1); }
[root@RHEL48-LTP-x86 async_handler]# gcc -c -g -O2 conftest.c [root@RHEL48-LTP-x86 async_handler]# echo $?
0
[root@RHEL48-LTP-x86 async_handler]# ll
total 40
(quoted diff) +0 -7
-rw-rw-r--  1 root root 1045 Nov 12 02:19 Makefile
-rw-rw-r--  1 root root 5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root 4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root 6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root  147 Nov 15 15:14 conftest.c
-rw-r--r--  1 root root 2596 Nov 16 16:24 conftest.o
-rwxrwxr-x  1 root root  333 Nov 12 02:19 run_auto.sh
[root@RHEL48-LTP-x86 async_handler]#
------------
I tried build async_handler.c with "-c" option by manual operation
according to "conftest.c", and it succeeded:
------------
[root@RHEL48-LTP-x86 async_handler]# gcc -c -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include -I../../../../include -I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realtime/lib -L../../../../lib async_handler.c -lrealtime -lpthread -lrt -lm -o async_handler In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h: In function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:119: warning: implicit declaration of function `__sync_add_and_fetch'
gcc: -lrealtime: linker input file unused because linking not done
gcc: -lpthread: linker input file unused because linking not done
gcc: -lrt: linker input file unused because linking not done
gcc: -lm: linker input file unused because linking not done
[root@RHEL48-LTP-x86 async_handler]# echo $?
0
[root@RHEL48-LTP-x86 async_handler]# ll
total 56
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-rw-rw-r--  1 root root  1045 Nov 12 02:19 Makefile
-rw-r--r--  1 root root 12612 Nov 16 16:27 async_handler
-rw-rw-r--  1 root root  5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root  4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root  6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root   147 Nov 15 15:14 conftest.c
-rw-r--r--  1 root root  2596 Nov 16 16:24 conftest.o
-rwxrwxr-x  1 root root   333 Nov 12 02:19 run_auto.sh
[root@RHEL48-LTP-x86 async_handler]#
------------
But above build is not with linkage by "-c" option.
With linkage, it failed:
------------
[root@RHEL48-LTP-x86 async_handler]# gcc -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include -I../../../../include -I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realtime/lib -L../../../../lib async_handler.c -lrealtime -lpthread -lrt -lm -o async_handler In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h: In function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:119: warning: implicit declaration of function `__sync_add_and_fetch'
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(librttest.o)(.text+0x1a7): In function `create_thread':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librttest.h:119: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
[root@RHEL48-LTP-x86 async_handler]#
------------

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I think that the check of "__sync_add_and_fetch" by "conftest.c" must be done without "-c" option.

Please try out HEAD again. It should be fixed now (I substituted
AC_LINK_IFELSE for AC_TRY_COMPILE).
Thanks,
-Garrett

Mitani

author

2010-11-17 02:59 UTC #8 lore raw

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-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Wednesday, November 17, 2010 2:04 AM
To: Mitani
Cc: [email protected]
Subject: Re: [LTP] Realtime test failure
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-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Tuesday, November 16, 2010 12:58 AM
To: Mitani
Cc: [email protected]
Subject: Re: [LTP] Realtime test failure
Quoted 17 lines · Mitani
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-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 2:20 PM
To: Mitani
Cc: [email protected]; 當座健市
Subject: Re: [LTP] Realtime test failure
2010/11/14 Mitani <[email protected]>:
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-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 12:03 PM
To: Mitani
Subject: Re: [LTP] Realtime test failure
On Sun, Nov 14, 2010 at 6:54 PM, Mitani <[email protected]>
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Hi,
"realtime" build failed in my system with git
"ltp-f388d33.tar.gz":
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------------<RHEL4.8 - x86>
make[2]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
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make -C lib -f
"/home/LTP/ltp-dev-20101112/testcases/realtime/lib/Makefile"
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all
make[3]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime/lib' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
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-I../../../include -I../../../include -c -o librttest.o
librttest.c
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In file included from librttest.c:43:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h: In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h:119
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: warning: implicit declaration of function
`__sync_add_and_fetch'
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gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
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-I../../../include -I../../../include -c -o libstats.o
libstats.c
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In file included from libstats.c:47:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h: In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h:119
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: warning: implicit declaration of function
`__sync_add_and_fetch'
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if [ -z "librttest.o libstats.o" ] ; then \
       echo "Cowardly refusing to create empty archive"; \
       exit 1; \
fi
ar -rc "librealtime.a" librttest.o libstats.o
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ranlib "librealtime.a"
make[3]: Leaving directory /home/LTP/ltp-dev-20101112/testcases/realtime/lib' make[3]: Entering directory /home/LTP/ltp-dev-20101112/testcases/realtime/func' make[4]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
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Review
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gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
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-I/home/LTP/ltp-dev-20101112/testcases/realtime/include
-I../../../../include -I../../../../include
-L/home/LTP/ltp-dev-20101112/testcases/realtime/lib
-L../../../../lib
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async_handler.c -lrealtime -lpthread -lrt -lm -o
async_handler
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In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
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In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11
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9:
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warning: implicit declaration of function
`__sync_add_and_fetch'
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/home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(libr
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ttest.o)
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(.text+0x1a7): In function `create_thread':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h:119
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: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
make[4]: *** [async_handler] Error 1
make[4]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
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make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func' make[2]: *** [all] Error 2
make[2]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
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make[1]: *** [all] Error 2
make[1]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases'
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make: *** [testcases-all] Error 2
------------
"realtime" build failed in:
------------
RHEL4.8 -- x86, x86_64, ia64
RHEL5.4 -- x86
------------
"realtime" build succeeded in:
------------
RHEL5.4 -- x86_64, ia64
------------
It is caused by "__sync_add_and_fetch".
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In following URL, "__sync_add_and_fetch" is "built-in functions
for
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atomic memory access". And It is provided in "gcc":
http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Atomic-Builtins.html
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There is "__sync_add_and_fetch" in gcc4.1.2 (It is the gcc
of
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RHEL5.1
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-
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RHEL5.4).
And there is not "__sync_add_and_fetch" in gcc3.4.6 (It is
the
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gcc
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of
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RHEL4.8)
In addition, "__sync_add_and_fetch" is for 64 bit environment.
http://stackoverflow.com/questions/130740/link-error-when-compiling-
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gcc-atom
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ic-operation-in-32-bit-mode
http://gcc.gnu.org/wiki/Atomic
Perhaps, the judgment that "realtime" must be built or not
depends
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on
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gcc's version (> 4.0) and 64 bits environment, I think.
Could you please attach your testcases/realtime/config.log and testcases/realtime/include/realtime_config.h ? Thanks,
-Garrett
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I understood.
Thank you and sorry for my insufficient information.
I attach following files:
- config.log (RHEL4.8-x86)
- realtime_config.h (RHEL4.8-x86)
- config.log (RHEL5.5-x86)
- realtime_config.h (RHEL5.5-x86)
Could you please try compiling the following C sources in both
scenarios?
Thanks,
-Garrett
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#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
        char *c;
        return __sync_add_and_fetch(c, 1);
}
I was going to compile the sent source in RHEL4.8/5.5-x86, but failed.
------------<RHEL4.8-x86>
[root@RHEL48-LTP-x86 async_handler]# cat realtime-test.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
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int main(void) {
       char *c;
       return __sync_add_and_fetch(c, 1); }
[root@RHEL48-LTP-x86 async_handler]# gcc realtime-test.c -o
realtime-test
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/tmp/cciHVx8b.o(.text+0x25): In function `main':
: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status [root@RHEL48-LTP-x86 async_handler]# [root@RHEL48-LTP-x86 async_handler]# gcc -g -O2 -g -O2
-fno-strict-aliasing -pipe -Wall -D
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_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include
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-I../../../../include
-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/re
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altime/lib -L../../../..
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/lib realtime-test.c -lrealtime -lpthread -lrt -lm -o
realtime-test
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realtime-test.c: In function `main':
realtime-test.c:7: warning: implicit declaration of function
`__sync_add_and_fetch'
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realtime-test.c:6: warning: 'c' might be used uninitialized in this
function
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/tmp/ccIDckLk.o(.text+0x10): In function `main':
/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/rea
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ltime-test.c:7: undefined reference to `__sync_add_and_fetch'
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collect2: ld returned 1 exit status
[root@RHEL48-LTP-x86 async_handler]#
------------
------------<RHEL5.5-x86>
[root@RHEL55-LTP-x86 async_handler]# cat realtime-test.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
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int main(void) {
       char *c;
       return __sync_add_and_fetch(c, 1); }
[root@RHEL55-LTP-x86 async_handler]# gcc realtime-test.c -o
realtime-test
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/tmp/ccK8hmPs.o: In function `main':
realtime-test.c:(.text+0x20): undefined reference to
`__sync_add_and_fetch_1'
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collect2: ld returned 1 exit status [root@RHEL55-LTP-x86 async_handler]# gcc -g -O2 -g -O2
-fno-strict-aliasing -pipe -Wall -D
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_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include
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-I../../../../include
-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/re
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altime/lib -L../../../..
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/lib realtime-test.c -lrealtime -lpthread -lrt -lm -o
realtime-test
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realtime-test.c: In function 'main':
realtime-test.c:7: warning: 'c' is used uninitialized in this
function
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/tmp/ccKUnocB.o: In function `main':
/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/rea
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ltime-test.c:7: undefined reference to `__sync_add_and_fetch_1'
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collect2: ld returned 1 exit status
[root@RHEL55-LTP-x86 async_handler]#
Not sure why but it incorrectly passed on your machine:
configure:5186: checking Checking for __sync_add_and_fetch gcc builtin function
configure:5216: gcc -c -g -O2 conftest.c >&5 configure:5222: $? = 0
23 AC_MSG_CHECKING([Checking for __sync_add_and_fetch gcc builtin function])
24 AC_TRY_COMPILE([
25 #ifndef _GNU_SOURCE
26 #define _GNU_SOURCE
27 #endif
28 #include <stdlib.h>],[int main(void) {
29 char *c;
30 return __sync_add_and_fetch(c, 1);
31 }],[has___sync_add_and_fetch=yes])
32 if test "x$has___sync_add_and_fetch" = xyes; then
33 AC_DEFINE(HAVE___SYNC_ADD_AND_FETCH,1,[Define to 1 if you
have the __ sync_add_and_fetch gcc builtin function])
34 AC_MSG_RESULT(yes)
35 else
36 AC_MSG_RESULT(no)
37 fi
Whereas it didn't on mine:
248 configure:4777: checking Checking for __sync_add_and_fetch gcc
builtin funct ion
249 configure:4797: gcc -c -g -O2 conftest.c >&5
250 configure:4797: $? = 0
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There was a potential problem with the macro though (I keep on
forgetting that AC_TRY_COMPILE and AC_COMPILE_IFELSE work predefine main() with the block of code provided), so please let me know if things work for you.
Thanks,
-Garrett
I attached same options by obeying "config.log".
And I confirmed that "conftest.c" could be successfully compiled by manual operation:
------------
[root@RHEL48-LTP-x86 async_handler]# pwd /home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler [root@RHEL48-LTP-x86 async_handler]# ll
total 36
(quoted diff) +0 -6
-rw-rw-r--  1 root root 1045 Nov 12 02:19 Makefile
-rw-rw-r--  1 root root 5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root 4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root 6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root  147 Nov 15 15:14 conftest.c
-rwxrwxr-x  1 root root  333 Nov 12 02:19 run_auto.sh
[root@RHEL48-LTP-x86 async_handler]# cat conftest.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
       char *c;
       return __sync_add_and_fetch(c, 1); }
[root@RHEL48-LTP-x86 async_handler]# gcc -c -g -O2 conftest.c [root@RHEL48-LTP-x86 async_handler]# echo $?
0
[root@RHEL48-LTP-x86 async_handler]# ll
total 40
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-rw-rw-r--  1 root root 1045 Nov 12 02:19 Makefile
-rw-rw-r--  1 root root 5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root 4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root 6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root  147 Nov 15 15:14 conftest.c
-rw-r--r--  1 root root 2596 Nov 16 16:24 conftest.o
-rwxrwxr-x  1 root root  333 Nov 12 02:19 run_auto.sh
[root@RHEL48-LTP-x86 async_handler]#
------------
I tried build async_handler.c with "-c" option by manual operation according to "conftest.c", and it succeeded:
------------
[root@RHEL48-LTP-x86 async_handler]# gcc -c -g -O2 -fno-strict-aliasing
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-pipe -Wall
-D_GNU_SOURCE  -I/home/LTP/ltp-dev-20101112/testcases/realtime/inclu
de -I../../../../include
-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realt
ime/lib -L../../../../lib async_handler.c -lrealtime -lpthread -lrt
-lm -o async_handler
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In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
In function `atomic_add':
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/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11 9: warning: implicit declaration of function `__sync_add_and_fetch'
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gcc: -lrealtime: linker input file unused because linking not done
gcc: -lpthread: linker input file unused because linking not done
gcc: -lrt: linker input file unused because linking not done
gcc: -lm: linker input file unused because linking not done [root@RHEL48-LTP-x86 async_handler]# echo $?
0
[root@RHEL48-LTP-x86 async_handler]# ll
total 56
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-rw-rw-r--  1 root root  1045 Nov 12 02:19 Makefile
-rw-r--r--  1 root root 12612 Nov 16 16:27 async_handler
-rw-rw-r--  1 root root  5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root  4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root  6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root   147 Nov 15 15:14 conftest.c
-rw-r--r--  1 root root  2596 Nov 16 16:24 conftest.o
-rwxrwxr-x  1 root root   333 Nov 12 02:19 run_auto.sh
[root@RHEL48-LTP-x86 async_handler]#
------------
But above build is not with linkage by "-c" option.
With linkage, it failed:
------------
[root@RHEL48-LTP-x86 async_handler]# gcc -g -O2 -fno-strict-aliasing
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-pipe -Wall
-D_GNU_SOURCE  -I/home/LTP/ltp-dev-20101112/testcases/realtime/inclu
de -I../../../../include
-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realt
ime/lib -L../../../../lib async_handler.c -lrealtime -lpthread -lrt
-lm -o async_handler
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In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
In function `atomic_add':
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/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11 9: warning: implicit declaration of function `__sync_add_and_fetch'
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/home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(libr ttest.o)(.text+0x1a7): In function `create_thread':
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/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte st.h:119: undefined reference to `__sync_add_and_fetch'
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collect2: ld returned 1 exit status
[root@RHEL48-LTP-x86 async_handler]#
------------

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I think that the check of "__sync_add_and_fetch" by "conftest.c" must be done without "-c" option.
Please try out HEAD again. It should be fixed now (I substituted
AC_LINK_IFELSE for AC_TRY_COMPILE).
Thanks,
-Garrett

Thank you for your response.

I tried to build "realtime" tests with recent git "ltp-c23c351.tar.gz".

Build succeeded in RHEL5.5-x86 system.

But build failed in RHEL4.8-x86/x86_64/ia64 systems:
------------<RHEL4.8-x86>
gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE -I/home/LTP/ltp-dev-2010
1116/testcases/realtime/include -I../../../../include -I../../../../include -L/home/LTP/
ltp-dev-20101116/testcases/realtime/lib -L../../../../lib testpi-4.c -lrealtime -lpthre
ad -lrt -lm -o testpi-4
gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE -I/home/LTP/ltp-dev-2010
1116/testcases/realtime/include -I../../../../include -I../../../../include -L/home/LTP/
ltp-dev-20101116/testcases/realtime/lib -L../../../../lib testpi-5.c -lrealtime -lpthre
ad -lrt -lm -o testpi-5
testpi-5.c: In function `do_test':
testpi-5.c:69: warning: unused variable `mutexattr'
testpi-5.c:70: warning: unused variable `retc'
testpi-5.c:70: warning: unused variable `protocol'
gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE -I/home/LTP/ltp-dev-2010
1116/testcases/realtime/include -I../../../../include -I../../../../include -L/home/LTP/
ltp-dev-20101116/testcases/realtime/lib -L../../../../lib testpi-6.c -lrealtime -lpthre
ad -lrt -lm -o testpi-6
testpi-6.c: In function `do_test':
testpi-6.c:75: warning: implicit declaration of function pthread_mutexattr_setrobust_np' testpi-6.c:75: error: PTHREAD_MUTEX_ROBUST_NP' undeclared (first use in this function) testpi-6.c:75: error: (Each undeclared identifier is reported only once testpi-6.c:75: error: for each function it appears in.)
testpi-6.c:79: warning: implicit declaration of function `pthread_mutexattr_getrobust_np' make[4]: *** [testpi-6] Error 1
make[4]: Leaving directory `/home/LTP/ltp-dev-20101116/testcases/realtime/func/pi-tests' make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/LTP/ltp-dev-20101116/testcases/realtime/func' make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/LTP/ltp-dev-20101116/testcases/realtime' make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/LTP/ltp-dev-20101116/testcases'
make: *** [testcases-all] Error 2
------------

The error of the "async_handler.c" by "__sync_add_and_fetch" until yesterday was solved.
However, a new failure about mutex occurs in another function.

I am investigating about it.
Perhaps.. perhaps, mutex is supported after kernel version 2.6.16, I think.

This is just a quick note to let you know.

Thank you--

-Tomonori Mitani

Garrett Cooper

2010-11-17 03:17 UTC #9 lore raw

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-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Wednesday, November 17, 2010 2:04 AM
To: Mitani
Cc: [email protected]
Subject: Re: [LTP] Realtime test failure
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-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Tuesday, November 16, 2010 12:58 AM
To: Mitani
Cc: [email protected]
Subject: Re: [LTP] Realtime test failure
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-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 2:20 PM
To: Mitani
Cc: [email protected]; 當座健市
Subject: Re: [LTP] Realtime test failure
2010/11/14 Mitani <[email protected]>:
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-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 12:03 PM
To: Mitani
Subject: Re: [LTP] Realtime test failure
On Sun, Nov 14, 2010 at 6:54 PM, Mitani <[email protected]>
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Hi,
"realtime" build failed in my system with git
"ltp-f388d33.tar.gz":
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------------<RHEL4.8 - x86>
make[2]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
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make -C lib -f
"/home/LTP/ltp-dev-20101112/testcases/realtime/lib/Makefile"
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all
make[3]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime/lib' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
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-I../../../include -I../../../include -c -o librttest.o
librttest.c
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In file included from librttest.c:43:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h: In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h:119
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: warning: implicit declaration of function
`__sync_add_and_fetch'
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gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
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-I../../../include -I../../../include -c -o libstats.o
libstats.c
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In file included from libstats.c:47:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h: In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h:119
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: warning: implicit declaration of function
`__sync_add_and_fetch'
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if [ -z "librttest.o libstats.o" ] ; then \
echo "Cowardly refusing to create empty archive"; \
exit 1; \
fi
ar -rc "librealtime.a" librttest.o libstats.o
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ranlib "librealtime.a"
make[3]: Leaving directory /home/LTP/ltp-dev-20101112/testcases/realtime/lib' make[3]: Entering directory /home/LTP/ltp-dev-20101112/testcases/realtime/func' make[4]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
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Review
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gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE
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-I/home/LTP/ltp-dev-20101112/testcases/realtime/include
-I../../../../include -I../../../../include
-L/home/LTP/ltp-dev-20101112/testcases/realtime/lib
-L../../../../lib
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async_handler.c -lrealtime -lpthread -lrt -lm -o
async_handler
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In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
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In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11
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9:
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warning: implicit declaration of function
`__sync_add_and_fetch'
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/home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(libr
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ttest.o)
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(.text+0x1a7): In function `create_thread':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h:119
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: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
make[4]: *** [async_handler] Error 1
make[4]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
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make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func' make[2]: *** [all] Error 2
make[2]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
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make[1]: *** [all] Error 2
make[1]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases'
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make: *** [testcases-all] Error 2
------------
"realtime" build failed in:
------------
RHEL4.8 -- x86, x86_64, ia64
RHEL5.4 -- x86
------------
"realtime" build succeeded in:
------------
RHEL5.4 -- x86_64, ia64
------------
It is caused by "__sync_add_and_fetch".
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In following URL, "__sync_add_and_fetch" is "built-in functions
for
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atomic memory access". And It is provided in "gcc":
http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Atomic-Builtins.html
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There is "__sync_add_and_fetch" in gcc4.1.2 (It is the gcc
of
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RHEL5.1
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-
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RHEL5.4).
And there is not "__sync_add_and_fetch" in gcc3.4.6 (It is
the
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gcc
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of
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RHEL4.8)
In addition, "__sync_add_and_fetch" is for 64 bit environment.
http://stackoverflow.com/questions/130740/link-error-when-compiling-
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gcc-atom
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ic-operation-in-32-bit-mode
http://gcc.gnu.org/wiki/Atomic
Perhaps, the judgment that "realtime" must be built or not
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on
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gcc's version (> 4.0) and 64 bits environment, I think.
Could you please attach your testcases/realtime/config.log and testcases/realtime/include/realtime_config.h ? Thanks,
-Garrett
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I understood.
Thank you and sorry for my insufficient information.
I attach following files:
- config.log (RHEL4.8-x86)
- realtime_config.h (RHEL4.8-x86)
- config.log (RHEL5.5-x86)
- realtime_config.h (RHEL5.5-x86)
Could you please try compiling the following C sources in both scenarios?
Thanks,
-Garrett
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#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
char *c;
return __sync_add_and_fetch(c, 1);
}
I was going to compile the sent source in RHEL4.8/5.5-x86, but failed.
------------<RHEL4.8-x86>
[root@RHEL48-LTP-x86 async_handler]# cat realtime-test.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
char *c;
return __sync_add_and_fetch(c, 1); }
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[root@RHEL48-LTP-x86 async_handler]# gcc realtime-test.c -o
realtime-test
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/tmp/cciHVx8b.o(.text+0x25): In function `main':
: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status [root@RHEL48-LTP-x86 async_handler]# [root@RHEL48-LTP-x86 async_handler]# gcc -g -O2 -g -O2
-fno-strict-aliasing -pipe -Wall -D
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_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include
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-I../../../../include
-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/re
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altime/lib -L../../../..
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/lib realtime-test.c -lrealtime -lpthread -lrt -lm -o
realtime-test
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realtime-test.c: In function `main':
realtime-test.c:7: warning: implicit declaration of function
`__sync_add_and_fetch'
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realtime-test.c:6: warning: 'c' might be used uninitialized in this
function
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/tmp/ccIDckLk.o(.text+0x10): In function `main':
/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/rea
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ltime-test.c:7: undefined reference to `__sync_add_and_fetch'
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collect2: ld returned 1 exit status
[root@RHEL48-LTP-x86 async_handler]#
------------
------------<RHEL5.5-x86>
[root@RHEL55-LTP-x86 async_handler]# cat realtime-test.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
char *c;
return __sync_add_and_fetch(c, 1); }
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[root@RHEL55-LTP-x86 async_handler]# gcc realtime-test.c -o
realtime-test
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/tmp/ccK8hmPs.o: In function `main':
realtime-test.c:(.text+0x20): undefined reference to
`__sync_add_and_fetch_1'
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collect2: ld returned 1 exit status [root@RHEL55-LTP-x86 async_handler]# gcc -g -O2 -g -O2
-fno-strict-aliasing -pipe -Wall -D
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_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include
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-I../../../../include
-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/re
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altime/lib -L../../../..
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/lib realtime-test.c -lrealtime -lpthread -lrt -lm -o
realtime-test
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realtime-test.c: In function 'main':
realtime-test.c:7: warning: 'c' is used uninitialized in this
function
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/tmp/ccKUnocB.o: In function `main':
/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/rea
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ltime-test.c:7: undefined reference to `__sync_add_and_fetch_1'
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collect2: ld returned 1 exit status
[root@RHEL55-LTP-x86 async_handler]#
Not sure why but it incorrectly passed on your machine:
configure:5186: checking Checking for __sync_add_and_fetch gcc builtin function
configure:5216: gcc -c -g -O2 conftest.c >&5 configure:5222: $? = 0
23 AC_MSG_CHECKING([Checking for __sync_add_and_fetch gcc builtin function])
24 AC_TRY_COMPILE([
25 #ifndef _GNU_SOURCE
26 #define _GNU_SOURCE
27 #endif
28 #include <stdlib.h>],[int main(void) {
29 char *c;
30 return __sync_add_and_fetch(c, 1);
31 }],[has___sync_add_and_fetch=yes])
32 if test "x$has___sync_add_and_fetch" = xyes; then
33 AC_DEFINE(HAVE___SYNC_ADD_AND_FETCH,1,[Define to 1 if you have the __ sync_add_and_fetch gcc builtin function]) 34 AC_MSG_RESULT(yes)
35 else
36 AC_MSG_RESULT(no)
37 fi
Whereas it didn't on mine:
248 configure:4777: checking Checking for __sync_add_and_fetch gcc builtin funct ion
249 configure:4797: gcc -c -g -O2 conftest.c >&5
250 configure:4797: $? = 0
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There was a potential problem with the macro though (I keep on forgetting that AC_TRY_COMPILE and AC_COMPILE_IFELSE work predefine main() with the block of code provided), so please let me know if things work for you.
Thanks,
-Garrett
I attached same options by obeying "config.log".
And I confirmed that "conftest.c" could be successfully compiled by manual operation:
------------
[root@RHEL48-LTP-x86 async_handler]# pwd /home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler [root@RHEL48-LTP-x86 async_handler]# ll
total 36
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-rw-rw-r--  1 root root 1045 Nov 12 02:19 Makefile
-rw-rw-r--  1 root root 5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root 4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root 6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root  147 Nov 15 15:14 conftest.c
-rwxrwxr-x  1 root root  333 Nov 12 02:19 run_auto.sh
[root@RHEL48-LTP-x86 async_handler]# cat conftest.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
char *c;
return __sync_add_and_fetch(c, 1); }
[root@RHEL48-LTP-x86 async_handler]# gcc -c -g -O2 conftest.c [root@RHEL48-LTP-x86 async_handler]# echo $?
0
[root@RHEL48-LTP-x86 async_handler]# ll
total 40
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-rw-rw-r--  1 root root 1045 Nov 12 02:19 Makefile
-rw-rw-r--  1 root root 5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root 4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root 6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root  147 Nov 15 15:14 conftest.c
-rw-r--r--  1 root root 2596 Nov 16 16:24 conftest.o
-rwxrwxr-x  1 root root  333 Nov 12 02:19 run_auto.sh
[root@RHEL48-LTP-x86 async_handler]#
------------
I tried build async_handler.c with "-c" option by manual operation according to "conftest.c", and it succeeded:
------------
[root@RHEL48-LTP-x86 async_handler]# gcc -c -g -O2 -fno-strict-aliasing
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-pipe -Wall
-D_GNU_SOURCE  -I/home/LTP/ltp-dev-20101112/testcases/realtime/inclu
de -I../../../../include
-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realt ime/lib -L../../../../lib async_handler.c -lrealtime -lpthread -lrt -lm -o async_handler
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In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
In function `atomic_add':
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/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11 9: warning: implicit declaration of function `__sync_add_and_fetch'
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gcc: -lrealtime: linker input file unused because linking not done
gcc: -lpthread: linker input file unused because linking not done
gcc: -lrt: linker input file unused because linking not done
gcc: -lm: linker input file unused because linking not done [root@RHEL48-LTP-x86 async_handler]# echo $?
0
[root@RHEL48-LTP-x86 async_handler]# ll
total 56
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-rw-rw-r--  1 root root  1045 Nov 12 02:19 Makefile
-rw-r--r--  1 root root 12612 Nov 16 16:27 async_handler
-rw-rw-r--  1 root root  5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root  4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root  6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root   147 Nov 15 15:14 conftest.c
-rw-r--r--  1 root root  2596 Nov 16 16:24 conftest.o
-rwxrwxr-x  1 root root   333 Nov 12 02:19 run_auto.sh
[root@RHEL48-LTP-x86 async_handler]#
------------
But above build is not with linkage by "-c" option.
With linkage, it failed:
------------
[root@RHEL48-LTP-x86 async_handler]# gcc -g -O2 -fno-strict-aliasing
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-pipe -Wall
-D_GNU_SOURCE  -I/home/LTP/ltp-dev-20101112/testcases/realtime/inclu
de -I../../../../include
-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realt ime/lib -L../../../../lib async_handler.c -lrealtime -lpthread -lrt -lm -o async_handler
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In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
In function `atomic_add':
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/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11 9: warning: implicit declaration of function `__sync_add_and_fetch'
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/home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(libr ttest.o)(.text+0x1a7): In function `create_thread':
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/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte st.h:119: undefined reference to `__sync_add_and_fetch'
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collect2: ld returned 1 exit status
[root@RHEL48-LTP-x86 async_handler]#
------------
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I think that the check of "__sync_add_and_fetch" by "conftest.c" must be done without "-c" option.
Please try out HEAD again. It should be fixed now (I substituted AC_LINK_IFELSE for AC_TRY_COMPILE).
Thanks,
-Garrett
Thank you for your response.
I tried to build "realtime" tests with recent git "ltp-c23c351.tar.gz".
Build succeeded in RHEL5.5-x86 system.
But build failed in RHEL4.8-x86/x86_64/ia64 systems:
------------<RHEL4.8-x86>
gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE -I/home/LTP/ltp-dev-2010 1116/testcases/realtime/include -I../../../../include -I../../../../include -L/home/LTP/ ltp-dev-20101116/testcases/realtime/lib -L../../../../lib testpi-4.c -lrealtime -lpthre ad -lrt -lm -o testpi-4
gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE -I/home/LTP/ltp-dev-2010 1116/testcases/realtime/include -I../../../../include -I../../../../include -L/home/LTP/ ltp-dev-20101116/testcases/realtime/lib -L../../../../lib testpi-5.c -lrealtime -lpthre ad -lrt -lm -o testpi-5
testpi-5.c: In function `do_test':
testpi-5.c:69: warning: unused variable `mutexattr'
testpi-5.c:70: warning: unused variable `retc'
testpi-5.c:70: warning: unused variable `protocol'
gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall -D_GNU_SOURCE -I/home/LTP/ltp-dev-2010 1116/testcases/realtime/include -I../../../../include -I../../../../include -L/home/LTP/ ltp-dev-20101116/testcases/realtime/lib -L../../../../lib testpi-6.c -lrealtime -lpthre ad -lrt -lm -o testpi-6
testpi-6.c: In function `do_test':
testpi-6.c:75: warning: implicit declaration of function pthread_mutexattr_setrobust_np' testpi-6.c:75: error: PTHREAD_MUTEX_ROBUST_NP' undeclared (first use in this function) testpi-6.c:75: error: (Each undeclared identifier is reported only once testpi-6.c:75: error: for each function it appears in.)
testpi-6.c:79: warning: implicit declaration of function `pthread_mutexattr_getrobust_np' make[4]: *** [testpi-6] Error 1
make[4]: Leaving directory `/home/LTP/ltp-dev-20101116/testcases/realtime/func/pi-tests' make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/LTP/ltp-dev-20101116/testcases/realtime/func' make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/LTP/ltp-dev-20101116/testcases/realtime' make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/LTP/ltp-dev-20101116/testcases'
make: *** [testcases-all] Error 2
------------
The error of the "async_handler.c" by "__sync_add_and_fetch" until yesterday was solved.
However, a new failure about mutex occurs in another function.

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I am investigating about it.
Perhaps.. perhaps, mutex is supported after kernel version 2.6.16, I think.
This is just a quick note to let you know.

Lol. Please try again.

Mitani

author

2010-11-18 00:22 UTC #10 lore raw

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-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Wednesday, November 17, 2010 12:17 PM
To: Mitani
Cc: [email protected]
Subject: Re: [LTP] Realtime test failure
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-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Wednesday, November 17, 2010 2:04 AM
To: Mitani
Cc: [email protected]
Subject: Re: [LTP] Realtime test failure
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-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Tuesday, November 16, 2010 12:58 AM
To: Mitani
Cc: [email protected]
Subject: Re: [LTP] Realtime test failure
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-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 2:20 PM
To: Mitani
Cc: [email protected]; 當座健市
Subject: Re: [LTP] Realtime test failure
2010/11/14 Mitani <[email protected]>:
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-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Monday, November 15, 2010 12:03 PM
To: Mitani
Subject: Re: [LTP] Realtime test failure
On Sun, Nov 14, 2010 at 6:54 PM, Mitani <[email protected]>
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Hi,
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"realtime" build failed in my system with git
"ltp-f388d33.tar.gz":
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------------<RHEL4.8 - x86>
make[2]: Entering directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
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make -C lib -f
"/home/LTP/ltp-dev-20101112/testcases/realtime/lib/Makefile"
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all
make[3]: Entering directory `/home/LTP/ltp-dev-20101112/testcases/realtime/lib' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall
-D_GNU_SOURCE
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-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
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-I../../../include -I../../../include -c -o librttest.o
librttest.c
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In file included from librttest.c:43:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h: In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h:119
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: warning: implicit declaration of function
`__sync_add_and_fetch'
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gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall
-D_GNU_SOURCE
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-I/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include
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-I../../../include -I../../../include -c -o libstats.o
libstats.c
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In file included from libstats.c:47:
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h: In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h:119
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: warning: implicit declaration of function
`__sync_add_and_fetch'
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if [ -z "librttest.o libstats.o" ] ; then \
       echo "Cowardly refusing to create empty archive";
\
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       exit 1; \
fi
ar -rc "librealtime.a" librttest.o libstats.o ranlib "librealtime.a"
make[3]: Leaving directory /home/LTP/ltp-dev-20101112/testcases/realtime/lib' make[3]: Entering directory /home/LTP/ltp-dev-20101112/testcases/realtime/func' make[4]: Entering directory
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`/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
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gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall
-D_GNU_SOURCE
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Review
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-I/home/LTP/ltp-dev-20101112/testcases/realtime/include
-I../../../../include -I../../../../include
-L/home/LTP/ltp-dev-20101112/testcases/realtime/lib
-L../../../../lib
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async_handler.c -lrealtime -lpthread -lrt -lm -o
async_handler
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In file included from async_handler.c:42:
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/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
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In
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function `atomic_add':
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11
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9:
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warning: implicit declaration of function
`__sync_add_and_fetch'
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/home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(libr
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ttest.o)
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(.text+0x1a7): In function `create_thread':
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
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st.h:119
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: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status
make[4]: *** [async_handler] Error 1
make[4]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler'
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make[3]: *** [all] Error 2
make[3]: Leaving directory `/home/LTP/ltp-dev-20101112/testcases/realtime/func' make[2]: *** [all] Error 2
make[2]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases/realtime'
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make[1]: *** [all] Error 2
make[1]: Leaving directory
`/home/LTP/ltp-dev-20101112/testcases'
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make: *** [testcases-all] Error 2
------------
"realtime" build failed in:
------------
RHEL4.8 -- x86, x86_64, ia64
RHEL5.4 -- x86
------------
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"realtime" build succeeded in:
------------
RHEL5.4 -- x86_64, ia64
------------
It is caused by "__sync_add_and_fetch".
In following URL, "__sync_add_and_fetch" is "built-in
functions
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for
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atomic memory access". And It is provided in "gcc":
http://gcc.gnu.org/onlinedocs/gcc-4.4.0/gcc/Atomic-Builtins.html
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There is "__sync_add_and_fetch" in gcc4.1.2 (It is the gcc
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RHEL5.1
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-
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RHEL5.4).
And there is not "__sync_add_and_fetch" in gcc3.4.6 (It
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the
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gcc
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of
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RHEL4.8)
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In addition, "__sync_add_and_fetch" is for 64 bit environment.
http://stackoverflow.com/questions/130740/link-error-when-compiling-
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gcc-atom
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ic-operation-in-32-bit-mode
http://gcc.gnu.org/wiki/Atomic
Perhaps, the judgment that "realtime" must be built or not
depends
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on
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gcc's version (> 4.0) and 64 bits environment, I think.
Could you please attach your testcases/realtime/config.log
and
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testcases/realtime/include/realtime_config.h ?
Thanks,
-Garrett
I understood.
Thank you and sorry for my insufficient information.
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I attach following files:
- config.log (RHEL4.8-x86)
- realtime_config.h (RHEL4.8-x86)
- config.log (RHEL5.5-x86)
- realtime_config.h (RHEL5.5-x86)
Could you please try compiling the following C sources in
both
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scenarios?
Thanks,
-Garrett
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
        char *c;
        return __sync_add_and_fetch(c, 1);
}
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I was going to compile the sent source in RHEL4.8/5.5-x86, but
failed.
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------------<RHEL4.8-x86>
[root@RHEL48-LTP-x86 async_handler]# cat realtime-test.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
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int main(void) {
       char *c;
       return __sync_add_and_fetch(c, 1); }
[root@RHEL48-LTP-x86 async_handler]# gcc realtime-test.c -o
realtime-test
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/tmp/cciHVx8b.o(.text+0x25): In function `main':
: undefined reference to `__sync_add_and_fetch'
collect2: ld returned 1 exit status [root@RHEL48-LTP-x86 async_handler]# [root@RHEL48-LTP-x86 async_handler]# gcc -g -O2 -g -O2
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-fno-strict-aliasing -pipe -Wall -D
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_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include
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-I../../../../include
-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/re
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altime/lib -L../../../..
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/lib realtime-test.c -lrealtime -lpthread -lrt -lm -o
realtime-test
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realtime-test.c: In function `main':
realtime-test.c:7: warning: implicit declaration of function
`__sync_add_and_fetch'
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realtime-test.c:6: warning: 'c' might be used uninitialized in
this
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function
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/tmp/ccIDckLk.o(.text+0x10): In function `main':
/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/rea
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ltime-test.c:7: undefined reference to `__sync_add_and_fetch'
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collect2: ld returned 1 exit status
[root@RHEL48-LTP-x86 async_handler]#
------------
------------<RHEL5.5-x86>
[root@RHEL55-LTP-x86 async_handler]# cat realtime-test.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
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int main(void) {
       char *c;
       return __sync_add_and_fetch(c, 1); }
[root@RHEL55-LTP-x86 async_handler]# gcc realtime-test.c -o
realtime-test
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/tmp/ccK8hmPs.o: In function `main':
realtime-test.c:(.text+0x20): undefined reference to
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`__sync_add_and_fetch_1'
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collect2: ld returned 1 exit status [root@RHEL55-LTP-x86 async_handler]# gcc -g -O2 -g -O2
-fno-strict-aliasing -pipe -Wall -D
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_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/include
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-I../../../../include
-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/re
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altime/lib -L../../../..
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/lib realtime-test.c -lrealtime -lpthread -lrt -lm -o
realtime-test
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realtime-test.c: In function 'main':
realtime-test.c:7: warning: 'c' is used uninitialized in this
function
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/tmp/ccKUnocB.o: In function `main':
/home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler/rea
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ltime-test.c:7: undefined reference to `__sync_add_and_fetch_1'
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collect2: ld returned 1 exit status
[root@RHEL55-LTP-x86 async_handler]#
Not sure why but it incorrectly passed on your machine:
configure:5186: checking Checking for __sync_add_and_fetch gcc
builtin
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function
configure:5216: gcc -c -g -O2 conftest.c >&5
configure:5222: $? = 0
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23 AC_MSG_CHECKING([Checking for __sync_add_and_fetch gcc builtin function])
24 AC_TRY_COMPILE([
25 #ifndef _GNU_SOURCE
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26 #define _GNU_SOURCE
27 #endif
28 #include <stdlib.h>],[int main(void) {
29 char *c;
30 return __sync_add_and_fetch(c, 1);
31 }],[has___sync_add_and_fetch=yes])
32 if test "x$has___sync_add_and_fetch" = xyes; then
33 AC_DEFINE(HAVE___SYNC_ADD_AND_FETCH,1,[Define to 1 if
you
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have the __ sync_add_and_fetch gcc builtin function])
34 AC_MSG_RESULT(yes)
35 else
36 AC_MSG_RESULT(no)
37 fi
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Whereas it didn't on mine:
248 configure:4777: checking Checking for __sync_add_and_fetch gcc
builtin funct ion
249 configure:4797: gcc -c -g -O2 conftest.c >&5
250 configure:4797: $? = 0
There was a potential problem with the macro though (I keep
on
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forgetting that AC_TRY_COMPILE and AC_COMPILE_IFELSE work predefine main() with the block of code provided), so please let me know if things work for you.
Thanks,
-Garrett
I attached same options by obeying "config.log".
And I confirmed that "conftest.c" could be successfully compiled
by
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manual operation:
------------
[root@RHEL48-LTP-x86 async_handler]# pwd /home/LTP/ltp-dev-20101112/testcases/realtime/func/async_handler [root@RHEL48-LTP-x86 async_handler]# ll
total 36
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-rw-rw-r--  1 root root 1045 Nov 12 02:19 Makefile
-rw-rw-r--  1 root root 5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root 4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root 6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root  147 Nov 15 15:14 conftest.c
-rwxrwxr-x  1 root root  333 Nov 12 02:19 run_auto.sh
[root@RHEL48-LTP-x86 async_handler]# cat conftest.c #ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdlib.h>
int main(void) {
       char *c;
       return __sync_add_and_fetch(c, 1); }
[root@RHEL48-LTP-x86 async_handler]# gcc -c -g -O2 conftest.c [root@RHEL48-LTP-x86 async_handler]# echo $?
0
[root@RHEL48-LTP-x86 async_handler]# ll
total 40
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-rw-rw-r--  1 root root 1045 Nov 12 02:19 Makefile
-rw-rw-r--  1 root root 5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root 4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root 6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root  147 Nov 15 15:14 conftest.c
-rw-r--r--  1 root root 2596 Nov 16 16:24 conftest.o
-rwxrwxr-x  1 root root  333 Nov 12 02:19 run_auto.sh
[root@RHEL48-LTP-x86 async_handler]#
------------
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I tried build async_handler.c with "-c" option by manual operation according to "conftest.c", and it succeeded:
------------
[root@RHEL48-LTP-x86 async_handler]# gcc -c -g -O2
-fno-strict-aliasing
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-pipe -Wall
-D_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/inclu
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de -I../../../../include
-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realt
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ime/lib -L../../../../lib async_handler.c -lrealtime -lpthread
-lrt
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-lm -o async_handler
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In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
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In function `atomic_add':
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/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11
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9: warning: implicit declaration of function `__sync_add_and_fetch'
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gcc: -lrealtime: linker input file unused because linking not done
gcc: -lpthread: linker input file unused because linking not done
gcc: -lrt: linker input file unused because linking not done
gcc: -lm: linker input file unused because linking not done [root@RHEL48-LTP-x86 async_handler]# echo $?
0
[root@RHEL48-LTP-x86 async_handler]# ll
total 56
(quoted diff) +0 -8
-rw-rw-r--  1 root root  1045 Nov 12 02:19 Makefile
-rw-r--r--  1 root root 12612 Nov 16 16:27 async_handler
-rw-rw-r--  1 root root  5341 Nov 12 02:19 async_handler.c
-rw-rw-r--  1 root root  4485 Nov 12 02:19 async_handler_jk.c
-rw-rw-r--  1 root root  6013 Nov 12 02:19 async_handler_tsc.c
-rw-r--r--  1 root root   147 Nov 15 15:14 conftest.c
-rw-r--r--  1 root root  2596 Nov 16 16:24 conftest.o
-rwxrwxr-x  1 root root   333 Nov 12 02:19 run_auto.sh
[root@RHEL48-LTP-x86 async_handler]#
------------
Quoted 6 lines
Quoted 6 lines
Quoted 4 lines
But above build is not with linkage by "-c" option.
With linkage, it failed:
------------
[root@RHEL48-LTP-x86 async_handler]# gcc -g -O2 -fno-strict-aliasing
-pipe -Wall
-D_GNU_SOURCE -I/home/LTP/ltp-dev-20101112/testcases/realtime/inclu
Quoted 2 lines
Quoted 2 lines
de -I../../../../include
-I../../../../include -L/home/LTP/ltp-dev-20101112/testcases/realt
Quoted 1 line
Quoted 1 line
ime/lib -L../../../../lib async_handler.c -lrealtime -lpthread
-lrt
Quoted 3 lines
Quoted 3 lines
-lm -o async_handler
Quoted 2 lines
In file included from async_handler.c:42:
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:
Quoted 3 lines
Quoted 3 lines
In function `atomic_add':
Quoted 1 line
/home/LTP/ltp-dev-20101112/testcases/realtime/include/librttest.h:11
Quoted 3 lines
Quoted 3 lines
9: warning: implicit declaration of function `__sync_add_and_fetch'
Quoted 1 line
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/librealtime.a(libr
Quoted 3 lines
Quoted 3 lines
ttest.o)(.text+0x1a7): In function `create_thread':
Quoted 1 line
/home/LTP/ltp-dev-20101112/testcases/realtime/lib/../include/librtte
Quoted 6 lines
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st.h:119: undefined reference to `__sync_add_and_fetch'
Quoted 5 lines
collect2: ld returned 1 exit status
[root@RHEL48-LTP-x86 async_handler]#
------------
I think that the check of "__sync_add_and_fetch" by "conftest.c"
must
Quoted 10 lines
Quoted 6 lines
Quoted 1 line
be done without "-c" option.
Please try out HEAD again. It should be fixed now (I substituted
AC_LINK_IFELSE for AC_TRY_COMPILE).
Thanks,
-Garrett
Thank you for your response.
Quoted 7 lines
I tried to build "realtime" tests with recent git "ltp-c23c351.tar.gz".
Build succeeded in RHEL5.5-x86 system.
But build failed in RHEL4.8-x86/x86_64/ia64 systems:
------------<RHEL4.8-x86>
gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall
-D_GNU_SOURCE -I/home/LTP/ltp-dev-2010
Quoted 1 line
1116/testcases/realtime/include -I../../../../include
-I../../../../include -L/home/LTP/
Quoted 1 line
ltp-dev-20101116/testcases/realtime/lib
-L../../../../lib testpi-4.c -lrealtime -lpthre
Quoted 2 lines
ad -lrt -lm -o testpi-4
gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall
-D_GNU_SOURCE -I/home/LTP/ltp-dev-2010
Quoted 1 line
1116/testcases/realtime/include -I../../../../include
-I../../../../include -L/home/LTP/
Quoted 1 line
ltp-dev-20101116/testcases/realtime/lib
-L../../../../lib testpi-5.c -lrealtime -lpthre
Quoted 6 lines
ad -lrt -lm -o testpi-5
testpi-5.c: In function `do_test':
testpi-5.c:69: warning: unused variable mutexattr' testpi-5.c:70: warning: unused variable retc' testpi-5.c:70: warning: unused variable `protocol' gcc -g -O2 -g -O2 -fno-strict-aliasing -pipe -Wall
-D_GNU_SOURCE -I/home/LTP/ltp-dev-2010
Quoted 1 line
1116/testcases/realtime/include -I../../../../include
-I../../../../include -L/home/LTP/
Quoted 1 line
ltp-dev-20101116/testcases/realtime/lib
-L../../../../lib testpi-6.c -lrealtime -lpthre
Quoted 3 lines
ad -lrt -lm -o testpi-6
testpi-6.c: In function `do_test':
testpi-6.c:75: warning: implicit declaration of function
`pthread_mutexattr_setrobust_np'
Quoted 1 line
testpi-6.c:75: error: `PTHREAD_MUTEX_ROBUST_NP' undeclared (first use
in this function)
Quoted 3 lines
testpi-6.c:75: error: (Each undeclared identifier is reported only once testpi-6.c:75: error: for each function it appears in.) testpi-6.c:79: warning: implicit declaration of function
`pthread_mutexattr_getrobust_np'
Quoted 2 lines
make[4]: *** [testpi-6] Error 1
make[4]: Leaving directory
`/home/LTP/ltp-dev-20101116/testcases/realtime/func/pi-tests'
Quoted 2 lines
make[3]: *** [all] Error 2
make[3]: Leaving directory
`/home/LTP/ltp-dev-20101116/testcases/realtime/func'
Quoted 2 lines
make[2]: *** [all] Error 2
make[2]: Leaving directory
`/home/LTP/ltp-dev-20101116/testcases/realtime'
Quoted 6 lines
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/LTP/ltp-dev-20101116/testcases'
make: *** [testcases-all] Error 2
------------
The error of the "async_handler.c" by "__sync_add_and_fetch" until
yesterday
Quoted 3 lines
was solved.
However, a new failure about mutex occurs in another function.

Quoted 8 lines

Quoted 2 lines
I am investigating about it.
Perhaps.. perhaps, mutex is supported after kernel version 2.6.16, I
think.
Quoted 3 lines
This is just a quick note to let you know.
Lol. Please try again.

Thank you for your response.

I tried to build with "ltp-66d67b5.tar.gz", but it failed in configure. Therefore, I tried with older git "ltp-92dfd5b.tar.gz", and it succeeded in RHEL5.5-x86 and RHEL4.8-x86 systems.

From "ltp-92dfd5b.tar.gz" to "ltp-66d67b5.tar.gz", new probrem occured.

New revisions are released in sequence. Therefore I intend to build with the latest version again.

Thank you--

-Tomonori Mitani

Garrett Cooper

2010-11-18 00:30 UTC #11 lore raw

Quoted 10 lines

Thank you for your response.
I tried to build with "ltp-66d67b5.tar.gz", but it failed in configure. Therefore, I tried with older git "ltp-92dfd5b.tar.gz", and it succeeded in RHEL5.5-x86 and RHEL4.8-x86 systems.
From "ltp-92dfd5b.tar.gz" to "ltp-66d67b5.tar.gz", new probrem occured.
New revisions are released in sequence. Therefore I intend to build with the latest version again.

Huh...? What do you mean failed in configure? Logs please (PS the latest snapshot is different from that)!
Thanks,
-Garrett

Mitani

author

2010-11-18 01:26 UTC #12 lore raw

Quoted 15 lines

-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Thursday, November 18, 2010 9:30 AM
To: Mitani
Cc: [email protected]
Subject: Re: [LTP] Realtime test failure
Quoted 8 lines
Thank you for your response.
I tried to build with "ltp-66d67b5.tar.gz", but it failed in configure. Therefore, I tried with older git "ltp-92dfd5b.tar.gz", and it succeeded in RHEL5.5-x86 and RHEL4.8-x86 systems.
From "ltp-92dfd5b.tar.gz" to "ltp-66d67b5.tar.gz", new probrem occured.

Quoted 7 lines

Quoted 2 lines
New revisions are released in sequence. Therefore I intend to build with the latest version again.
Huh...? What do you mean failed in configure? Logs please (PS the latest snapshot is different from that)!
Thanks,
-Garrett

I send configure's logs.

I tried with "ltp-92dfd5b.tar.gz", "ltp-66d67b5.tar.gz" and "ltp-86209d2.tar.gz".
Only "ltp-92dfd5b.tar.gz" succeeded.

Quoted 1 line

the latest snapshot is different from that

Yes. latest snapshot is "ltp-86209d2.tar.gz". But it failed, too. I send two logs just in case.

- ltp-86209d2_configure.txt --- result of "ltp-86209d2.tar.gz"
- ltp-66d67b5_configure.txt --- result of "ltp-66d67b5.tar.gz"

Thank you--

-Tomonori Mitani

_______________________________________________
Ltp-list mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/ltp-list

Mitani

author

2010-11-19 07:40 UTC #13 lore raw

In reply to Garrett Cooper

Quoted 18 lines

-----Original Message-----
From: Garrett Cooper [mailto:[email protected]]
Sent: Thursday, November 18, 2010 9:30 AM
To: Mitani
Cc: [email protected]
Subject: Re: [LTP] Realtime test failure
Quoted 3 lines
Thank you for your response.
I tried to build with "ltp-66d67b5.tar.gz", but it failed in
configure.
Quoted 1 line
Therefore, I tried with older git "ltp-92dfd5b.tar.gz", and it
succeeded
Quoted 3 lines
in RHEL5.5-x86 and RHEL4.8-x86 systems.
From "ltp-92dfd5b.tar.gz" to "ltp-66d67b5.tar.gz", new probrem
occured.
Quoted 1 line

Quoted 7 lines

Quoted 2 lines
New revisions are released in sequence. Therefore I intend to build with the latest version again.
Huh...? What do you mean failed in configure? Logs please (PS the latest snapshot is different from that)!
Thanks,
-Garrett

"configure" failed with git "ltp-86209d2.tar.gz":
------------
./configure: line 8228: syntax error near unexpected token elif' ./configure: line 8228: elif test "x$has_quotav2" = "xyes"; then'
------------
(Detail log information is in my yesterday's email)

Environmants are RHEL5.5/4.8 -- x86/x86_64/ia64.

"${LTPROOT}/configure" file of "ltp-86209d2.tar.gz" is following:
------------< RHEL4.8 - x86>
[...]
8204 done
8205

  8206  cat >conftest.$ac_ext <<_ACEOF
  8207  /* confdefs.h.  */
  8208  _ACEOF
  8209  cat confdefs.h >>conftest.$ac_ext
  8210  cat >>conftest.$ac_ext <<_ACEOF
  8211  /* end confdefs.h.  */
  8212
  8213  #define _LINUX_QUOTA_VERSION 2
  8214  #include <sys/types.h>
  8215  #include <sys/quota.h>
  8216  #include <unistd.h>
  8217  int main(void) {

8218 struct dqblk dq;
8219 return quotactl(QCMD(Q_GETINFO, USRQUOTA), (const char *)
"/dev/null",
8220 geteuid(), (caddr_t) &dq);
8221 }
8222 if test "x$has_quotav1" = "xyes"; then
8223

  8224  cat >>confdefs.h <<\_ACEOF
  8225  #define HAVE_QUOTAV1 1
  8226  _ACEOF
  8227
  8228  elif test "x$has_quotav2" = "xyes"; then
  8229
  8230  cat >>confdefs.h <<\_ACEOF
  8231  #define HAVE_QUOTAV2 1
  8232  _ACEOF
  8233
  8234  fi
  8235
  8236  _ACEOF
  8237  rm -f conftest.$ac_objext conftest$ac_exeext
  8238  if { (ac_try="$ac_link"

[...]
------------

The line 8210 (" 8210 cat >>conftest.$ac_ext <<_ACEOF") is the "here document".
First "_ACEOF" which appears after this line is the line 8224. But the line 8224 is "here document", too.

I think that it is syntax error.

In the line 8236, there is "_ACEOF".
This "_ACEOF" may be just after line 8221, I think.

I tried to execute "configure" after above revision, and it succeeded. After this, "make" and "make install" succeeded, too.

Regards--

-Tomonori Mitani