New: Fails to build python 2.7.2 for 2440 arm

https://bugs.busybox.net/show_bug.cgi?id=5666

Summary: Fails to build python 2.7.2 for 2440 arm
Product: buildroot
Version: 2012.08
Platform: PC
OS/Version: Linux
Status: NEW
Severity: blocker
Priority: P5
Component: Other
AssignedTo: unassigned at buildroot.uclibc.org
ReportedBy: hardcore at hardcoreforensics.com
CC: buildroot at uclibc.org
Estimated Hours: 0.0

The build process for Python under the samsung cpu 2440 fails to build with the following error

bob at bob-virtual-machine:~/buildroot-2012.08$ make

PATH="/home/bob/buildroot-2012.08/output/host/bin:/home/bob/buildroot-2012.08/output/host/usr/bin:/home/bob/buildroot-2012.08/output/host/usr/sbin/:/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" PERLLIB="/home/bob/buildroot-2012.08/output/host/usr/lib/perl"
PYTHON_MODULES_INCLUDE=/home/bob/buildroot-2012.08/output/host/usr/arm-unknown-linux-uclibcgnueabi/sysroot/usr/include PYTHON_MODULES_LIB="/home/bob/buildroot-2012.08/output/host/usr/arm-unknown-linux-uclibcgnueabi/sysroot/lib
/home/bob/buildroot-2012.08/output/host/usr/arm-unknown-linux-uclibcgnueabi/sysroot/usr/lib"
/usr/bin/make -j2 -C /home/bob/buildroot-2012.08/output/build/python-2.7.2/
make[1]: Entering directory
`/home/bob/buildroot-2012.08/output/build/python-2.7.2'
/home/bob/buildroot-2012.08/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-gcc
-c -fno-strict-aliasing -pipe -Os -DNDEBUG -g -fwrapv -O3 -Wall
-Wstrict-prototypes -I. -IInclude -I./Include -fPIC -DPy_BUILD_CORE -o
Modules/python.o ./Modules/python.c
/home/bob/buildroot-2012.08/output/host/usr/bin/arm-unknown-linux-uclibcgnueabi-gcc
-c -fno-strict-aliasing -pipe -Os -DNDEBUG -g -fwrapv -O3 -Wall
-Wstrict-prototypes -I. -IInclude -I./Include -fPIC -DPy_BUILD_CORE -o
Parser/acceler.o Parser/acceler.c
In file included from Include/Python.h:85:0,

                 from ./Modules/python.c:3:

Include/unicodeobject.h:575:20: warning: type defaults to 'int' in declaration of 'wchar_t'
Include/unicodeobject.h:575:28: error: expected ';', ',' or ')' before '*' token
Include/unicodeobject.h:593:14: warning: type defaults to 'int' in declaration of 'wchar_t'
Include/unicodeobject.h:593:22: error: expected ';', ',' or ')' before '*' token
In file included from Include/Python.h:85:0,
from Include/pgenheaders.h:10,
from Parser/acceler.c:13:
Include/unicodeobject.h:575:20: warning: type defaults to 'int' in declaration of 'wchar_t'
Include/unicodeobject.h:575:28: error: expected ';', ',' or ')' before '*' token
Include/unicodeobject.h:593:14: warning: type defaults to 'int' in declaration of 'wchar_t'
Include/unicodeobject.h:593:22: error: expected ';', ',' or ')' before '*' token
make[1]: *** [Modules/python.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: *** [Parser/acceler.o] Error 1
make[1]: Leaving directory `/home/bob/buildroot-2012.08/output/build/python-2.7.2'
make: *** [/home/bob/buildroot-2012.08/output/build/python-2.7.2/.stamp_built] Error 2
bob at bob-virtual-machine:~/buildroot-2012.08$

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https://bugs.busybox.net/show_bug.cgi?id=5666

--- Comment #1 from Thomas Petazzoni <[email protected]> 2012-11-12 12:38:00 UTC --- Could you please share your Buildroot .config ?

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https://bugs.busybox.net/show_bug.cgi?id=5666

--- Comment #2 from hardcorefs <[email protected]> 2012-11-12 13:04:07 UTC --- Created attachment 4622
--> https://bugs.busybox.net/attachment.cgi?id=4622
example of broken python build

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https://bugs.busybox.net/show_bug.cgi?id=5666

--- Comment #3 from Thomas Petazzoni <[email protected]> 2012-11-12 14:34:59 UTC --- Ok. My guess is that:

*) You built once without WCHAR support in the toolchain (BR2_USE_WCHAR not enabled)

*) You went back in menuconfig, enabled Python. But to do this, you enabled WCHAR support in the toolchain. And then, instead of doing a complete "make clean all" cycle that ensures the toolchain gets rebuilt, you just did "make". So it tried to build Python without rebuilding the toolchain, leading to your error.

I'm pretty sure that the problem will go away if you do a "make clean all" cycle. I tested your configuration here and it built just fine.

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Thomas Petazzoni <[email protected]> changed:

What |Removed |Added
----------------------------------------------------------------------------

             Status|NEW                         |RESOLVED
         Resolution|                            |WORKSFORME

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--- Comment #4 from hardcorefs <[email protected]> 2012-11-12 22:32:37 UTC --- HI,
Yep you are indeed a fortune teller........
Did "make clean all" and it did solve the problem, just it extends the build time every time.

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