Description: Update M4 macro to latest version, compliant with python > 3.12
Author: Pieter Lenaerts <plenae@disroot.org>
Origin: https://gitweb.git.savannah.gnu.org/gitweb/?p=autoconf-archive.git;a=blob_plain;f=m4/ax_python_module.m4
Last-Update: 2025-10-27
--- a/m4/m4_ax_python_module.m4
+++ b/m4/m4_ax_python_module.m4
@@ -1,49 +1,56 @@
 # ===========================================================================
-#     http://www.gnu.org/software/autoconf-archive/ax_python_module.html
+#     https://www.gnu.org/software/autoconf-archive/ax_python_module.html
 # ===========================================================================
 #
 # SYNOPSIS
 #
-#   AX_PYTHON_MODULE(modname[, fatal])
+#   AX_PYTHON_MODULE(modname[, fatal, python])
 #
 # DESCRIPTION
 #
 #   Checks for Python module.
 #
 #   If fatal is non-empty then absence of a module will trigger an error.
+#   The third parameter can either be "python" for Python 2 or "python3" for
+#   Python 3; defaults to Python 3.
 #
 # LICENSE
 #
-#   Copyright (c) 2008 Andrew Collier <colliera@ukzn.ac.za>
+#   Copyright (c) 2008 Andrew Collier
 #
 #   Copying and distribution of this file, with or without modification, are
 #   permitted in any medium without royalty provided the copyright notice
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.
 
-#serial 5
+#serial 9
 
 AU_ALIAS([AC_PYTHON_MODULE], [AX_PYTHON_MODULE])
 AC_DEFUN([AX_PYTHON_MODULE],[
     if test -z $PYTHON;
     then
-        PYTHON="python"
+        if test -z "$3";
+        then
+            PYTHON="python3"
+        else
+            PYTHON="$3"
+        fi
     fi
     PYTHON_NAME=`basename $PYTHON`
     AC_MSG_CHECKING($PYTHON_NAME module: $1)
-	$PYTHON -c "import imp; imp.find_module(\"$1\")" 2>/dev/null
-	if test $? -eq 0;
-	then
-		AC_MSG_RESULT(yes)
-		eval AS_TR_CPP(HAVE_PYMOD_$1)=yes
-	else
-		AC_MSG_RESULT(no)
-		eval AS_TR_CPP(HAVE_PYMOD_$1)=no
-		#
-		if test -n "$2"
-		then
-			AC_MSG_ERROR(failed to find required module $1)
-			exit 1
-		fi
-	fi
+    $PYTHON -c "import $1" 2>/dev/null
+    if test $? -eq 0;
+    then
+        AC_MSG_RESULT(yes)
+        eval AS_TR_CPP(HAVE_PYMOD_$1)=yes
+    else
+        AC_MSG_RESULT(no)
+        eval AS_TR_CPP(HAVE_PYMOD_$1)=no
+        #
+        if test -n "$2"
+        then
+            AC_MSG_ERROR(failed to find required module $1)
+            exit 1
+        fi
+    fi
 ])