[issue15590] --libs is inconsistent for python-config --libs and pkgconfig python --libs

[Michael Haubenwallner]

Michael Haubenwallner added the comment:

Now for --disable-shared:

For AIX, with both these configure variants:
  $ configure --prefix=/prefix --disable-shared CC=gcc CXX=g++ OPT=
  $ configure --prefix=/prefix --disable-shared --without-computed-gotos CC=xlc_r CXX=xlC_r OPT=
the output changes like this:

   $ PKG_CONFIG_PATH=/prefix/lib/pkgconfig pkg-config --libs python-3.4
old: -L/prefix/lib -lpython3.4m
new: -L/prefix/lib -lpython3.4m -Wl,-bE:/prefix/lib/python3.4/config-3.4m/python.exp -lld

   $ /prefix/bin/python3.4-config --ldflags
old: -L/prefix/lib/python3.4/config-3.4m -L/prefix/lib -lintl -ldl -lm  -lpython3.4m -Wl,-bE:Modules/python.exp -lld
new: -Wl,-bI:/prefix/lib/python3.4/config-3.4m/python.exp



For Linux, with this configure variant:
  $ configure --prefix=/prefix --enable-shared CC=gcc CXX=g++
the output changes like this:

  $ PKG_CONFIG_PATH=/prefix/lib/pkgconfig pkg-config --libs python-3.4
old: -L/prefix/lib -lpython3.4m
new: -L/prefix/lib -lpython3.4m -Xlinker -export-dynamic

   $ /prefix/bin/python3.4-config --ldflags
old: -L/prefix/lib/python3.4/config-3.4m -L/prefix/lib -lpthread -ldl  -lutil -lm  -lpython3.4m -Xlinker -export-dynamic
new: # Yes, nothing. 

And with --disable-shared, even distutils.command.build_ext.get_libraries() does *not* add libpython.so for Linux and similar, so python-shipped modules are linked with python symbols undefined now - but still as shared libraries.

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<http://bugs.python.org/issue15590>
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