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AC_DEFUN([AX_CHECK_PYTHON_DEVEL], [
ac_previous_cppflags=$CPPFLAGS
ac_previous_ldflags=$LDFLAGS
ac_previous_libs=$LIBS
AC_PATH_PROG([pyconfig], [$PYTHON-config], [no])
AS_IF([test x"$pyconfig" = x"no"], [
dnl For those that don't have python-config
CPPFLAGS="$CFLAGS `$PYTHON -c 'import distutils.sysconfig; \
print("-I" + distutils.sysconfig.get_config_var("INCLUDEPY"))'`"
CPPFLAGS="$CPPFLAGS `$PYTHON -c 'import distutils.sysconfig; \
print(distutils.sysconfig.get_config_var("CFLAGS"))'`"
LDFLAGS="$LDFLAGS `$PYTHON -c 'import distutils.sysconfig; \
print("-L" + distutils.sysconfig.get_python_lib(plat_specific=1,\
standard_lib=1) + "/config")'`"
LDFLAGS="$LDFLAGS `$PYTHON -c 'import distutils.sysconfig; \
print(distutils.sysconfig.get_config_var("LINKFORSHARED"))'`"
LDFLAGS="$LDFLAGS `$PYTHON -c 'import distutils.sysconfig; \
print(distutils.sysconfig.get_config_var("LDFLAGS"))'`"
LIBS="$LIBS `$PYTHON -c 'import distutils.sysconfig; \
print(distutils.sysconfig.get_config_var("LIBS"))'`"
LIBS="$LIBS `$PYTHON -c 'import distutils.sysconfig; \
print(distutils.sysconfig.get_config_var("SYSLIBS"))'`"
], [
dnl If python-config is found use it
CPPFLAGS="$CFLAGS `$PYTHON-config --cflags`"
dnl We need to use --embed with python 3.8 but not with earlier version so
dnl check if it is recognized.
python_devel_embed=""
if $PYTHON-config --embed >/dev/null 2>/dev/null; then
python_devel_embed="--embed"
fi
LDFLAGS="$LDFLAGS `$PYTHON-config --ldflags $python_devel_embed`"
LIBS="$LIBS `$PYTHON-config --libs $python_devel_embed`"
unset python_devel_embed
])
AC_CHECK_HEADER([Python.h], [],
[AC_MSG_ERROR([Unable to find Python development headers])],)
AC_CHECK_FUNC([PyArg_ParseTuple], [],
[AC_MSG_ERROR([Unable to find a suitable python development library])])
CPPFLAGS=$ac_previous_cppflags
LDFLAGS=$ac_previous_ldflags
LIBS=$ac_previous_libs
])
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