Check if detected libpython.so can be dlopen-ed

A somewhat better solution for the libpython.so detection saga.
Unfortunately it has not presented itself and had to be painfully
extracted from a series of trial and error experiments. No living
beings were harmed in the process, though.

Many thanks to Paul for the help with testing this.
This commit is contained in:
Ricardo Mones 2013-05-30 18:29:07 +02:00
parent 9375966944
commit df8a1d7e76

View file

@ -1238,25 +1238,28 @@ AM_PATH_PYTHON([2.5], [
if test x"$HAVE_PYTHON" = xyes; then
# libpython.so
PYTHON_SO_FILE_LOCATION=`python-config --ldflags|sed 's/-L//'|awk '{print $1}'`
PYTHON_SO_FILE="libpython${PYTHON_VERSION}.so"
found_libpython_so="no"
if test -f "$PYTHON_PREFIX/lib/$PYTHON_SO_FILE"; then
found_libpython_so="yes"
PYTHON_SHARED_LIB=`python -c "import os,sys; print os.path.basename(os.path.realpath(\"$PYTHON_PREFIX/lib/$PYTHON_SO_FILE\"))"`
fi
if test x"$found_libpython_so" != x"yes" && test -f "$PYTHON_PREFIX/lib64/$PYTHON_SO_FILE"; then
found_libpython_so="yes"
PYTHON_SHARED_LIB=`python -c "import os,sys; print os.path.basename(os.path.realpath(\"$PYTHON_PREFIX/lib64/$PYTHON_SO_FILE\"))"`
fi
if test x"$found_libpython_so" != x"yes" && test -f "$PYTHON_SO_FILE_LOCATION/$PYTHON_SO_FILE"; then
found_libpython_so="yes"
PYTHON_SHARED_LIB=`python -c "import os,sys; print os.path.basename(os.path.realpath(\"$PYTHON_SO_FILE_LOCATION/$PYTHON_SO_FILE\"))"`
fi
PYTHON_SHARED_LIB="libpython${PYTHON_VERSION}.so"
_save_libs="$LIBS"
LIBS="-ldl"
AC_MSG_CHECKING([whether to dlopen $PYTHON_SHARED_LIB works])
AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
[#include <dlfcn.h>
#define PYTHON_SO_FILE "${PYTHON_SHARED_LIB}"
],
[if (!dlopen(PYTHON_SO_FILE, RTLD_NOW | RTLD_GLOBAL)) return 1; return 0;])
],
[found_libpython_so="yes"],
[found_libpython_so="no"],
[AC_MSG_FAILURE([cross-compiling not supported])])
if test x"$found_libpython_so" != x"yes"; then
AC_MSG_RESULT(no)
AC_MSG_WARN(Could not find Python shared libary: $PYTHON_SO_FILE does not exist. Maybe you need to install development packages for Python.)
HAVE_PYTHON=no
else
AC_MSG_RESULT(yes)
fi
LIBS="$_save_libs";
fi
if test x"$HAVE_PYTHON" = xyes; then
PKG_CHECK_MODULES(PYGTK, pygtk-2.0 >= 2.10.3, [AC_DEFINE(ENABLE_PYTHON, [1], [Enable Python support])], HAVE_PYTHON=no)