无法为 x86、uclibc 交叉编译 Python-2.7.18

Question

I'm trying to cross-compile Python 2.7.18 for an x86,uclibc machine using a crosstool-ng example toolchain. The commands used are the following:

CONFIG_SITE=config.site CC=/home/msainz/x-tools/x86_64-unknown-linux-uclibc/bin/x86_64-unknown-linux-uclibc-gcc CXX=/home/msainz/x-tools/x86_64-unknown-linux-uclibc/bin/x86_64-unknown-linux-uclibc-g++ AR=/home/msainz/x-tools/x86_64-unknown-linux-uclibc/bin/x86_64-unknown-linux-uclibc-ar RANLIB=/home/msainz/x-tools/x86_64-unknown-linux-uclibc/bin/x86_64-unknown-linux-uclibc-ranlib READELF=/home/msainz/x-tools/x86_64-unknown-linux-uclibc/bin/x86_64-unknown-linux-uclibc-readelf LDFLAGS="-L/home/msainz/Projects/Selene/WP3/local/uclibc/base_rootfs/lib -L/home/msainz/Projects/Selene/WP3/local/uclibc/base_rootfs/usr/lib" CFLAGS="-I/home/msainz/Projects/Selene/WP3/local/uclibc/base_rootfs/usr/include -I/home/msainz/Projects/Selene/WP3/local/uclibc/base_rootfs/include" CPPFLAGS="-I/home/msainz/Projects/Selene/WP3/local/uclibc/base_rootfs/usr/include -I/home/msainz/Projects/Selene/WP3/local/uclibc/base_rootfs/include" ./configure --enable-shared --host=x86_64-unknown-linux-uclibc --build=x86_64 --disable-ipv6 --prefix=/home/msainz/Projects/python2_top_uclibc/

followed by

PATH=$PATH:/home/msainz/Projects/python2_top_glibc/bin/ make

and

PATH=$PATH:/home/msainz/Projects/python2_top_glibc/bin/ make install

Execution ends with the following error:

fi /home/msainz/x-tools/x86_64-unknown-linux-uclibc/bin/x86_64-unknown-linux-uclibc-gcc -L/home/msainz/Projects/Selene/WP3/local/uclibc/base_rootfs/lib -L/home/msainz/Projects/Selene/WP3/local/uclibc/base_rootfs/usr/lib -Xlinker -export-dynamic -o python \\ Modules/python.o \\ -L. -lpython2.7 -ldl -lpthread -lm _PYTHON_PROJECT_BASE=/home/msainz/Projects/Python-2.7.18 _PYTHON_HOST_PLATFORM=linux2-x86_64 PYTHONPATH=./Lib:./Lib/plat-linux2 python -S -m sysconfig --generate-posix-vars ;\\ if test $? -ne 0 ; then \\ echo "generate-posix-vars failed" ; \\ rm -f ./pybuilddir.txt ; \\ exit 1 ; \\ fi python: error while loading shared libraries: libc.so.0: cannot open shared object file: No such file or directory generate-posix-vars failed make: *** [Makefile:523: pybuilddir.txt] Error 1

python2_top_glibc dir contains a previous Python-2.7.18 installation but for native glibc which was compiled perfectly. libc.so.0 is in fact in the base_rootfs of target system, which is being linked in ./configure stage. I'm stuck at this at the moment. Any clue will be appreciated. Any additional info will be supplied on demand.

Thanks in advance.

Answer 1

python: cannot open shared object file: No such file or directory

This is a run-time loader error. You are trying to run a python executable that is linked against that libc.so.0 .

If this executable can actually run in your host environment, you can enable it by adding your base_rootfs library to LD_LIBRARY_PATH . Otherwise, you need to use your host python executable in this step of the build process, or disable it altogether.