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m4: ac_python_devel: fixing for crosscompiling environments

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In a crosscompiling environment it's common to have a python executable
running for the host system with a python-config reporting the host
configuration and a second python-config reporting the target configuration.
In such cases, relying on the default oython-config is wrong and breaks
the cross compilation.

This patch adds a PYTHON_CONFIG variable that can be pointed to the second
python-config and fixes the rest of the m4 accordingly.

Signed-off-by: Angelo Compagnucci <angelo@amarulasolutions.com>
This commit is contained in:
Angelo Compagnucci 2020-03-24 22:53:37 +01:00
parent fbe8641026
commit 64e5c6b23d
1 changed files with 18 additions and 5 deletions
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23
libraries/libapparmor/m4/ac_python_devel.m4
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@ -13,6 +13,11 @@ AC_DEFUN([AC_PYTHON_DEVEL],[
PYTHON_VERSION=""
fi
AC_PATH_PROG([PYTHON_CONFIG],[`basename [$PYTHON]-config`])
if test -z "$PYTHON_CONFIG"; then
AC_MSG_ERROR([Cannot find python$PYTHON_VERSION-config in your system path])
fi
#
# Check for a version of Python >= 2.1.0
#
@ -79,8 +84,8 @@ $ac_distutils_result])
# Check for Python include path
#
AC_MSG_CHECKING([for Python include path])
if type $PYTHON-config; then
PYTHON_CPPFLAGS=`$PYTHON-config --includes`
if type $PYTHON_CONFIG; then
PYTHON_CPPFLAGS=`$PYTHON_CONFIG --includes`
fi
if test -z "$PYTHON_CPPFLAGS"; then
python_path=`$PYTHON -c "import sys; import distutils.sysconfig;\
@ -97,8 +102,8 @@ sys.stdout.write('%s\n' % distutils.sysconfig.get_python_inc());"`
# Check for Python library path
#
AC_MSG_CHECKING([for Python library path])
if type $PYTHON-config; then
PYTHON_LDFLAGS=`$PYTHON-config --ldflags`
if type $PYTHON_CONFIG; then
PYTHON_LDFLAGS=`$PYTHON_CONFIG --ldflags`
fi
if test -z "$PYTHON_LDFLAGS"; then
# (makes two attempts to ensure we've got a version number
@ -136,6 +141,10 @@ sys.stdout.write('%s\n' % distutils.sysconfig.get_python_lib(0,0));"`
# libraries which must be linked in when embedding
#
AC_MSG_CHECKING(python extra libraries)
if type $PYTHON_CONFIG; then
PYTHON_EXTRA_LIBS=`$PYTHON_CONFIG --libs --embed` || \
PYTHON_EXTRA_LIBS=''
fi
if test -z "$PYTHON_EXTRA_LIBS"; then
PYTHON_EXTRA_LIBS=`$PYTHON -c "import sys; import distutils.sysconfig; \
conf = distutils.sysconfig.get_config_var; \
@ -148,6 +157,10 @@ sys.stdout.write('%s %s %s\n' % (conf('BLDLIBRARY'), conf('LOCALMODLIBS'), conf(
# linking flags needed when embedding
#
AC_MSG_CHECKING(python extra linking flags)
if type $PYTHON_CONFIG; then
PYTHON_EXTRA_LDFLAGS=`$PYTHON_CONFIG --ldflags --embed` || \
PYTHON_EXTRA_LDFLAGS=''
fi
if test -z "$PYTHON_EXTRA_LDFLAGS"; then
PYTHON_EXTRA_LDFLAGS=`$PYTHON -c "import sys; import distutils.sysconfig; \
conf = distutils.sysconfig.get_config_var; \
@ -164,7 +177,7 @@ sys.stdout.write('%s\n' % conf('LINKFORSHARED'))"`
# save current global flags
ac_save_LIBS="$LIBS"
ac_save_CPPFLAGS="$CPPFLAGS"
LIBS="$ac_save_LIBS $PYTHON_LDFLAGS $PYTHON_EXTRA_LIBS"
LIBS="$ac_save_LIBS $PYTHON_EXTRA_LIBS $PYTHON_LDFLAGS"
CPPFLAGS="$ac_save_CPPFLAGS $PYTHON_CPPFLAGS"
AC_TRY_LINK([
#include <Python.h>