[Buildroot] Build error when trying to build the py-smbus package of i2c-tools
Arnout Vandecappelle
arnout at mind.be
Fri Jun 21 09:49:35 UTC 2013
On 21/06/13 11:28, Thomas Weininger wrote:
> Thank you for your suggestion Arnout. I tried it out but the error stays the same:
>
> /home/diasemi/workspace/dialog/buildroot/output/host/usr/bin/ccache /usr/bin/gcc -pthread -shared -L/home/diasemi/workspace/dialog/buildroot/output/host/lib -L/home/diasemi/workspace/dialog/buildroot/output/host/usr/lib -Wl,-rpath,/home/diasemi/workspace/dialog/buildroot/output/host/usr/lib -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -pipe -mfpu=vfpv4-d16 -mfloat-abi=hard -O3 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -I../include build/temp.linux-i686-2.7/smbusmodule.o -L/home/diasemi/workspace/dialog/buildroot/output/host/usr/lib -lpython2.7 -o build/lib.linux-i686-2.7/smbus.so
> gcc: error: unrecognized command line option '-mfpu=vfpv4-d16'
> gcc: error: unrecognized command line option '-mfloat-abi=hard'
> error: command '/home/diasemi/workspace/dialog/buildroot/output/host/usr/bin/ccache' failed with exit status 1
>
> It still uses /usr/bin/gcc for building smbus.so and I am not sure if I understand why this happens. Could it be because it uses python distutils in order to start the build?
>
> The file structure in the py-smbus subdirectory of i2c-tools is:
> py-smbus/
> ├── Module.mk
> ├── README
> ├── setup.py
> └── smbusmodule.c
>
> From the Module.mk file:
> all-python: $(INCLUDE_DIR)/linux/i2c-dev.h
> $(DISTUTILS) build
Can you add 'echo $$PATH' just above the call to $(DISTUTILS), just to
be sure that the right python will be used? Or, in the setup.py script, add
import sys
print sys.path
to check that the host-distutils will be used.
>
> So it uses Python distutils (the setup.py) in order to build smbus.so. And it seems to me that it uses the host distutils instead of the target system's one.
> If this is the problem, then the Module.mk or the setup.py will most likely need to be patched in order to use the target system toolchain?
Hang on, maybe you have to build host-python-setuptools first?
Regards,
Arnout
--
Arnout Vandecappelle arnout at mind be
Senior Embedded Software Architect +32-16-286500
Essensium/Mind http://www.mind.be
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