setup.py: do not add invalid header locations This piece of code incorrectly adds /usr/include to self.compiler.include_dirs, and results in the following invalid compilation line: /home/thomas/projets/buildroot/output/host/usr/bin/arm-none-linux-gnueabi-gcc -fPIC \ -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 \ -pipe -Os -DNDEBUG -g -O3 -Wall -Wstrict-prototypes \ -I/usr/include -I. -IInclude -I./Include \ -I/home/thomas/projets/buildroot/output/host/usr/arm-buildroot-linux-gnueabi/sysroot/usr/include \ -I/home/thomas/projets/buildroot/output/build/python-2.7.6/Include \ -I/home/thomas/projets/buildroot/output/build/python-2.7.6 \ -c /home/thomas/projets/buildroot/output/build/python-2.7.6/Modules/mathmodule.c \ -o build/temp.linux2-arm-2.7/home/thomas/projets/buildroot/output/build/python-2.7.6/Modules/mathmodule.o cc1: warning: include location "/usr/include" is unsafe for cross-compilation [-Wpoison-system-directories] [...] Signed-off-by: Thomas Petazzoni Index: b/setup.py =================================================================== --- a/setup.py +++ b/setup.py @@ -480,7 +480,7 @@ for directory in reversed(options.dirs): add_dir_to_list(dir_list, directory) - if os.path.normpath(sys.prefix) != '/usr' \ + if False and os.path.normpath(sys.prefix) != '/usr' \ and not sysconfig.get_config_var('PYTHONFRAMEWORK'): # OSX note: Don't add LIBDIR and INCLUDEDIR to building a framework # (PYTHONFRAMEWORK is set) to avoid # linking problems when