gdb and lttng-ust 0.12

DISCUSSION Saul Wold 2 participants 5 messages Apr 24, 2011 – Apr 25, 2011

Share & tools

Saul Wold

author

2011-04-24 20:16 UTC #0 lore raw

Dexuan,

It seems that when you updated lttng-ust to 0.12, it installed an /usr/include/ust directory that GDB now finds. This caused the gdbserver code to not build.

I investigated this and it seems to be due to gdb having a dependency on UST that causes GDB not to compile. I think at this point we may want to continue with UST disabled in gdb.

To reproduce this, ensure that lttng-ust-0.12 is built before building gdb and you should see a compilation failure.

My concern here is that if fix the GDB compilation failures, what else is going to fail as far as debugging with UST enabled on the remote, I know this feature is something we want, and should probably report to the GDB upstream.

The fix seems to be as simple as adding "--without-ust" to the gdb EXTRA_OECONF line.

Comments?

Signature · 28 lines

    Sau!

Saul Wold
Yocto Component Wrangler @ Intel
Yocto Project / Poky Build System

Error while compiling tracepoint.c -> tracepoint-ipa.o (note it's -ipa.o so a different set of flags).


| ccache i586-poky-linux-gcc -march=i586 --sysroot=/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/sysroots/qemux86 -c  -Wall    -I. -I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver -I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/../common -I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/../regformats -I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/../../include -O2 -pipe -g -feliminate-unused-debug-types -DCONFIG_UST_GDB_INTEGRATION -fPIC -DGDBSERVER -DIN_PROCESS_AGENT -fvisibility=hidden /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c -o tracepoint-ipa.o
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: In function 'first_marker':
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7009:3: warning: return from incompatible pointer type
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: In function 'next_marker':
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7024:23: warning: comparison of distinct pointer types lacks a cast
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7027:4: warning: return from incompatible pointer type
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: In function 'unprobe_marker_at':
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7105:33: error: request for member 'location' in something not a structure or union
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7109:51: error: request for member 'channel' in something not a structure or union
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7110:23: error: request for member 'name' in something not a structure or union
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7114:17: error: request for member 'channel' in something not a structure or union
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7114:39: error: request for member 'name' in something not a structure or union
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: In function 'probe_marker_at':
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7135:43: warning: assignment from incompatible pointer type
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7137:42: warning: assignment from incompatible pointer type
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: In function 'cmd_qtstmat':
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7180:43: warning: assignment from incompatible pointer type
| /vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7182:42: warning: assignment from incompatible pointer type
| make[4]: *** [tracepoint-ipa.o] Error 1

Cui, Dexuan

2011-04-25 01:57 UTC #1 lore raw

Hi Saul,
Thanks very much for the investigation!
I can reproduce the issue now when I build gdb after building lttng-ust (previously looks I built them in the reverse order, so didn't catch it.)

I haven't understood why this issue occurred after I upgraded ust from 0.11 to 0.12 as 0.11 actually installs /usr/include/ust, too. And gdb was not upgraded recently.

I'm looking into this now and will update asap.

Thanks,
-- Dexuan

-----Original Message-----
From: Saul Wold [mailto:[email protected]]
Sent: 2011年4月25日 4:17
To: Cui, Dexuan; 'Patches and discussions about the oe-core layer'
Cc: [email protected]
Subject: gdb and lttng-ust 0.12

Dexuan,

It seems that when you updated lttng-ust to 0.12, it installed an /usr/include/ust directory that GDB now finds. This caused the gdbserver code to not build.

I investigated this and it seems to be due to gdb having a dependency on UST that causes GDB not to compile. I think at this point we may want to continue with UST disabled in gdb.

To reproduce this, ensure that lttng-ust-0.12 is built before building gdb and you should see a compilation failure.

The fix seems to be as simple as adding "--without-ust" to the gdb EXTRA_OECONF line.

Comments?

Signature · 74 lines

     Sau!

Saul Wold
Yocto Component Wrangler @ Intel
Yocto Project / Poky Build System

Error while compiling tracepoint.c -> tracepoint-ipa.o (note it's -ipa.o 
so a different set of flags).


| ccache i586-poky-linux-gcc -march=i586 
--sysroot=/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/sysroots/qemux86 
-c  -Wall    -I. 
-I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver 
-I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/../common 
-I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/../regformats 
-I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/../../include 
-O2 -pipe -g -feliminate-unused-debug-types 
-DCONFIG_UST_GDB_INTEGRATION -fPIC -DGDBSERVER -DIN_PROCESS_AGENT 
-fvisibility=hidden 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c 
-o tracepoint-ipa.o
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'first_marker':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7009:3: 
warning: return from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'next_marker':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7024:23: 
warning: comparison of distinct pointer types lacks a cast
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7027:4: 
warning: return from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'unprobe_marker_at':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7105:33: 
error: request for member 'location' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7109:51: 
error: request for member 'channel' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7110:23: 
error: request for member 'name' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7114:17: 
error: request for member 'channel' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7114:39: 
error: request for member 'name' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'probe_marker_at':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7135:43: 
warning: assignment from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7137:42: 
warning: assignment from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'cmd_qtstmat':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7180:43: 
warning: assignment from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7182:42: 
warning: assignment from incompatible pointer type
| make[4]: *** [tracepoint-ipa.o] Error 1

Cui, Dexuan

2011-04-25 05:15 UTC #2 lore raw

Hi Saul,
I prefer "continue with UST disabled in gdb" for now.

I'm investigating more to get an in-depth understanding about the issue. e.g., ust-0.11 doesn't break building gdb while ust-0.12 does -- however both 0.11 and 0.12 install /usr/include/ust/.

Thanks,
-- Dexuan

-----Original Message-----
From: Cui, Dexuan
Sent: 2011年4月25日 9:57
To: 'Saul Wold'; 'Patches and discussions about the oe-core layer'
Cc: [email protected]
Subject: RE: gdb and lttng-ust 0.12

Hi Saul,
Thanks very much for the investigation!
I can reproduce the issue now when I build gdb after building lttng-ust (previously looks I built them in the reverse order, so didn't catch it.)

I haven't understood why this issue occurred after I upgraded ust from 0.11 to 0.12 as 0.11 actually installs /usr/include/ust, too. And gdb was not upgraded recently.

I'm looking into this now and will update asap.

Thanks,
-- Dexuan

Dexuan,

It seems that when you updated lttng-ust to 0.12, it installed an /usr/include/ust directory that GDB now finds. This caused the gdbserver code to not build.

I investigated this and it seems to be due to gdb having a dependency on UST that causes GDB not to compile. I think at this point we may want to continue with UST disabled in gdb.

To reproduce this, ensure that lttng-ust-0.12 is built before building gdb and you should see a compilation failure.

The fix seems to be as simple as adding "--without-ust" to the gdb EXTRA_OECONF line.

Comments?

Signature · 74 lines

     Sau!

Saul Wold
Yocto Component Wrangler @ Intel
Yocto Project / Poky Build System

Error while compiling tracepoint.c -> tracepoint-ipa.o (note it's -ipa.o 
so a different set of flags).


| ccache i586-poky-linux-gcc -march=i586 
--sysroot=/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/sysroots/qemux86 
-c  -Wall    -I. 
-I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver 
-I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/../common 
-I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/../regformats 
-I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/../../include 
-O2 -pipe -g -feliminate-unused-debug-types 
-DCONFIG_UST_GDB_INTEGRATION -fPIC -DGDBSERVER -DIN_PROCESS_AGENT 
-fvisibility=hidden 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c 
-o tracepoint-ipa.o
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'first_marker':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7009:3: 
warning: return from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'next_marker':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7024:23: 
warning: comparison of distinct pointer types lacks a cast
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7027:4: 
warning: return from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'unprobe_marker_at':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7105:33: 
error: request for member 'location' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7109:51: 
error: request for member 'channel' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7110:23: 
error: request for member 'name' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7114:17: 
error: request for member 'channel' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7114:39: 
error: request for member 'name' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'probe_marker_at':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7135:43: 
warning: assignment from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7137:42: 
warning: assignment from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'cmd_qtstmat':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7180:43: 
warning: assignment from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7182:42: 
warning: assignment from incompatible pointer type
| make[4]: *** [tracepoint-ipa.o] Error 1

Saul Wold

author

2011-04-25 05:24 UTC #3 lore raw

Quoted 3 lines · Dexuan

Hi Saul,
I prefer "continue with UST disabled in gdb" for now.

Ok, I have a patch queue'ed up already with this fix, I will push it as part of a consolidated request later tonight.

Quoted 2 lines

I'm investigating more to get an in-depth understanding about the issue. e.g., ust-0.11 doesn't break building gdb while ust-0.12 does -- however both 0.11 and 0.12 install /usr/include/ust/.

I agree, I am not sure why this is happening also, I thought that I did installs of 0.11 and did not see the ust directory, maybe I did not force or something. Maybe diff the marker.h files and see if there are differences?

Sau!

Quoted 52 lines

Thanks,
-- Dexuan
-----Original Message-----
From: Cui, Dexuan
Sent: 2011年4月25日 9:57
To: 'Saul Wold'; 'Patches and discussions about the oe-core layer'
Cc: [email protected]
Subject: RE: gdb and lttng-ust 0.12
Hi Saul,
Thanks very much for the investigation!
I can reproduce the issue now when I build gdb after building lttng-ust (previously looks I built them in the reverse order, so didn't catch it.)
I haven't understood why this issue occurred after I upgraded ust from 0.11 to 0.12 as 0.11 actually installs /usr/include/ust, too. And gdb was not upgraded recently.
I'm looking into this now and will update asap.
Thanks,
-- Dexuan
-----Original Message-----
From: Saul Wold [mailto:[email protected]]
Sent: 2011年4月25日 4:17
To: Cui, Dexuan; 'Patches and discussions about the oe-core layer'
Cc: [email protected]
Subject: gdb and lttng-ust 0.12
Dexuan,
It seems that when you updated lttng-ust to 0.12, it installed an /usr/include/ust directory that GDB now finds. This caused the gdbserver code to not build.
I investigated this and it seems to be due to gdb having a dependency on UST that causes GDB not to compile. I think at this point we may want to continue with UST disabled in gdb.
To reproduce this, ensure that lttng-ust-0.12 is built before building gdb and you should see a compilation failure.
My concern here is that if fix the GDB compilation failures, what else is going to fail as far as debugging with UST enabled on the remote, I know this feature is something we want, and should probably report to the GDB upstream.
The fix seems to be as simple as adding "--without-ust" to the gdb EXTRA_OECONF line.
Comments?

Cui, Dexuan

2011-04-25 09:07 UTC #4 lore raw

In reply to Cui, Dexuan

Hi Saul,
Due to the API change in ust-0.12, we'll have to wait upstream gdb's fix (I verified the latest gdb snapshot gdb-7.2.90.20110425 has the same issue. I will report a bug in gdb bugzilla) . I've reported http://bugzilla.pokylinux.org/show_bug.cgi?id=1005 to record this issue.

Thanks,
-- Dexuan

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Cui, Dexuan
Sent: 2011年4月25日 13:15
To: 'Saul Wold'; 'Patches and discussions about the oe-core layer'
Cc: '[email protected]'
Subject: Re: [poky] gdb and lttng-ust 0.12

Hi Saul,
I prefer "continue with UST disabled in gdb" for now.

I'm investigating more to get an in-depth understanding about the issue. e.g., ust-0.11 doesn't break building gdb while ust-0.12 does -- however both 0.11 and 0.12 install /usr/include/ust/.

Thanks,
-- Dexuan

-----Original Message-----
From: Cui, Dexuan
Sent: 2011年4月25日 9:57
To: 'Saul Wold'; 'Patches and discussions about the oe-core layer'
Cc: [email protected]
Subject: RE: gdb and lttng-ust 0.12

Hi Saul,
Thanks very much for the investigation!
I can reproduce the issue now when I build gdb after building lttng-ust (previously looks I built them in the reverse order, so didn't catch it.)

I haven't understood why this issue occurred after I upgraded ust from 0.11 to 0.12 as 0.11 actually installs /usr/include/ust, too. And gdb was not upgraded recently.

I'm looking into this now and will update asap.

Thanks,
-- Dexuan

Dexuan,

It seems that when you updated lttng-ust to 0.12, it installed an /usr/include/ust directory that GDB now finds. This caused the gdbserver code to not build.

I investigated this and it seems to be due to gdb having a dependency on UST that causes GDB not to compile. I think at this point we may want to continue with UST disabled in gdb.

To reproduce this, ensure that lttng-ust-0.12 is built before building gdb and you should see a compilation failure.

The fix seems to be as simple as adding "--without-ust" to the gdb EXTRA_OECONF line.

Comments?

Signature · 81 lines

     Sau!

Saul Wold
Yocto Component Wrangler @ Intel
Yocto Project / Poky Build System

Error while compiling tracepoint.c -> tracepoint-ipa.o (note it's -ipa.o 
so a different set of flags).


| ccache i586-poky-linux-gcc -march=i586 
--sysroot=/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/sysroots/qemux86 
-c  -Wall    -I. 
-I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver 
-I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/../common 
-I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/../regformats 
-I/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/../../include 
-O2 -pipe -g -feliminate-unused-debug-types 
-DCONFIG_UST_GDB_INTEGRATION -fPIC -DGDBSERVER -DIN_PROCESS_AGENT 
-fvisibility=hidden 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c 
-o tracepoint-ipa.o
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'first_marker':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7009:3: 
warning: return from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'next_marker':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7024:23: 
warning: comparison of distinct pointer types lacks a cast
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7027:4: 
warning: return from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'unprobe_marker_at':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7105:33: 
error: request for member 'location' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7109:51: 
error: request for member 'channel' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7110:23: 
error: request for member 'name' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7114:17: 
error: request for member 'channel' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7114:39: 
error: request for member 'name' in something not a structure or union
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'probe_marker_at':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7135:43: 
warning: assignment from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7137:42: 
warning: assignment from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c: 
In function 'cmd_qtstmat':
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7180:43: 
warning: assignment from incompatible pointer type
| 
/vol/1/sgw/autobuilder/poky-slave/poky-full-ia/build/build/tmp/work/i586-poky-linux/gdb-7.2-r0/gdb-7.2/gdb/gdbserver/tracepoint.c:7182:42: 
warning: assignment from incompatible pointer type
| make[4]: *** [tracepoint-ipa.o] Error 1



_______________________________________________
poky mailing list
[email protected]
https://lists.yoctoproject.org/listinfo/poky