https://github.com/cmusphinx/sphinxbase/pull/87

commit e0221880ccdd79ed9bf42937a56a4c319b013576

Author: Samuel Thibault <samuel.thibault@ens-lyon.org>

Date:   Thu Nov 11 21:06:59 2021 +0100

    Update ax_python_devel.m4

    Notably python3.10's distutils emits a warning when getting imported.

    This was making the old ax_python_devel.m4 fail.

diff --git a/m4/ax_python_devel.m4 b/m4/ax_python_devel.m4

index 59a2ff0..44dbd83 100644

--- a/m4/ax_python_devel.m4

+++ b/m4/ax_python_devel.m4

@@ -1,5 +1,5 @@

 # ===========================================================================

-#      http://www.gnu.org/software/autoconf-archive/ax_python_devel.html

+#     https://www.gnu.org/software/autoconf-archive/ax_python_devel.html

 # ===========================================================================

 #

 # SYNOPSIS

@@ -12,8 +12,8 @@

 #   in your configure.ac.

 #

 #   This macro checks for Python and tries to get the include path to

-#   'Python.h'. It provides the $(PYTHON_CPPFLAGS) and $(PYTHON_LDFLAGS)

-#   output variables. It also exports $(PYTHON_EXTRA_LIBS) and

+#   'Python.h'. It provides the $(PYTHON_CPPFLAGS) and $(PYTHON_LIBS) output

+#   variables. It also exports $(PYTHON_EXTRA_LIBS) and

 #   $(PYTHON_EXTRA_LDFLAGS) for embedding Python in your code.

 #

 #   You can search for some particular version of Python by passing a

@@ -52,7 +52,7 @@

 #   Public License for more details.

 #

 #   You should have received a copy of the GNU General Public License along

-#   with this program. If not, see <http://www.gnu.org/licenses/>.

+#   with this program. If not, see <https://www.gnu.org/licenses/>.

 #

 #   As a special exception, the respective Autoconf Macro's copyright owner

 #   gives unlimited permission to copy, distribute and modify the configure

@@ -67,7 +67,7 @@

 #   modified version of the Autoconf Macro, you may extend this special

 #   exception to the GPL to apply to your modified version as well.

-#serial 17

+#serial 21

 AU_ALIAS([AC_PYTHON_DEVEL], [AX_PYTHON_DEVEL])

 AC_DEFUN([AX_PYTHON_DEVEL],[

@@ -99,7 +99,7 @@ AC_DEFUN([AX_PYTHON_DEVEL],[

 This version of the AC@&t@_PYTHON_DEVEL macro

 doesn't work properly with versions of Python before

 2.1.0. You may need to re-run configure, setting the

-variables PYTHON_CPPFLAGS, PYTHON_LDFLAGS, PYTHON_SITE_PKG,

+variables PYTHON_CPPFLAGS, PYTHON_LIBS, PYTHON_SITE_PKG,

 PYTHON_EXTRA_LIBS and PYTHON_EXTRA_LDFLAGS by hand.

 Moreover, to disable this check, set PYTHON_NOVERSIONCHECK

 to something else than an empty string.

@@ -137,7 +137,7 @@ variable to configure. See ``configure --help'' for reference.

 	#

 	AC_MSG_CHECKING([for the distutils Python package])

 	ac_distutils_result=`$PYTHON -c "import distutils" 2>&1`

-	if test -z "$ac_distutils_result"; then

+	if test $? -eq 0; then

 		AC_MSG_RESULT([yes])

 	else

 		AC_MSG_RESULT([no])

@@ -172,7 +172,7 @@ $ac_distutils_result])

 	# Check for Python library path

 	#

 	AC_MSG_CHECKING([for Python library path])

-	if test -z "$PYTHON_LDFLAGS"; then

+	if test -z "$PYTHON_LIBS"; then

 		# (makes two attempts to ensure we've got a version number

 		# from the interpreter)

 		ac_python_version=`cat<<EOD | $PYTHON -

@@ -227,25 +227,25 @@ EOD`

 		then

 			# use the official shared library

 			ac_python_library=`echo "$ac_python_library" | sed "s/^lib//"`

-			PYTHON_LDFLAGS="-L$ac_python_libdir -l$ac_python_library"

+			PYTHON_LIBS="-L$ac_python_libdir -l$ac_python_library"

 		else

 			# old way: use libpython from python_configdir

 			ac_python_libdir=`$PYTHON -c \

 			  "from distutils.sysconfig import get_python_lib as f; \

 			  import os; \

 			  print (os.path.join(f(plat_specific=1, standard_lib=1), 'config'));"`

-			PYTHON_LDFLAGS="-L$ac_python_libdir -lpython$ac_python_version"

+			PYTHON_LIBS="-L$ac_python_libdir -lpython$ac_python_version"

 		fi

-		if test -z "PYTHON_LDFLAGS"; then

+		if test -z "PYTHON_LIBS"; then

 			AC_MSG_ERROR([

   Cannot determine location of your Python DSO. Please check it was installed with

-  dynamic libraries enabled, or try setting PYTHON_LDFLAGS by hand.

+  dynamic libraries enabled, or try setting PYTHON_LIBS by hand.

 			])

 		fi

 	fi

-	AC_MSG_RESULT([$PYTHON_LDFLAGS])

-	AC_SUBST([PYTHON_LDFLAGS])

+	AC_MSG_RESULT([$PYTHON_LIBS])

+	AC_SUBST([PYTHON_LIBS])

 	#

 	# Check for site packages

@@ -288,8 +288,10 @@ EOD`

 	AC_MSG_CHECKING([consistency of all components of python development environment])

 	# save current global flags

 	ac_save_LIBS="$LIBS"

+	ac_save_LDFLAGS="$LDFLAGS"

 	ac_save_CPPFLAGS="$CPPFLAGS"

-	LIBS="$ac_save_LIBS $PYTHON_LDFLAGS $PYTHON_EXTRA_LDFLAGS $PYTHON_EXTRA_LIBS"

+	LIBS="$ac_save_LIBS $PYTHON_LIBS $PYTHON_EXTRA_LIBS $PYTHON_EXTRA_LIBS"

+	LDFLAGS="$ac_save_LDFLAGS $PYTHON_EXTRA_LDFLAGS"

 	CPPFLAGS="$ac_save_CPPFLAGS $PYTHON_CPPFLAGS"

 	AC_LANG_PUSH([C])

 	AC_LINK_IFELSE([

@@ -300,6 +302,7 @@ EOD`

 	# turn back to default flags

 	CPPFLAGS="$ac_save_CPPFLAGS"

 	LIBS="$ac_save_LIBS"

+	LDFLAGS="$ac_save_LDFLAGS"

 	AC_MSG_RESULT([$pythonexists])

@@ -307,8 +310,8 @@ EOD`

 	   AC_MSG_FAILURE([

   Could not link test program to Python. Maybe the main Python library has been

   installed in some non-standard library path. If so, pass it to configure,

-  via the LDFLAGS environment variable.

-  Example: ./configure LDFLAGS="-L/usr/non-standard-path/python/lib"

+  via the LIBS environment variable.

+  Example: ./configure LIBS="-L/usr/non-standard-path/python/lib"

   ============================================================================

    ERROR!

    You probably have to install the development version of the Python package