From 083b47cdf4ba2ab0c1ecc938a6dcb59d6b85564f Mon Sep 17 00:00:00 2001
From: Michael Tremer <michael.tremer@ipfire.org>
Date: Fri, 11 May 2018 13:30:09 +0100
Subject: [PATCH] m4: Ship AX_PYTHON_MODULE

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
Signed-off-by: Jonatan Schlag <jonatan.schlag@ipfire.org>
---
 .gitignore             |  3 +--
 m4/ax_python_module.m4 | 56 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+), 2 deletions(-)
 create mode 100644 m4/ax_python_module.m4

diff --git a/.gitignore b/.gitignore
index 9c34c9d..8b22966 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,3 @@
-/m4
 /Makefile
 /build-aux
 /libtool
@@ -29,4 +28,4 @@ config.log
 config.status
 configure
 install-sh
-stamp-*
\ No newline at end of file
+stamp-*
diff --git a/m4/ax_python_module.m4 b/m4/ax_python_module.m4
new file mode 100644
index 0000000..f0f873d
--- /dev/null
+++ b/m4/ax_python_module.m4
@@ -0,0 +1,56 @@
+# ===========================================================================
+#     https://www.gnu.org/software/autoconf-archive/ax_python_module.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   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
+#
+#   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 9
+
+AU_ALIAS([AC_PYTHON_MODULE], [AX_PYTHON_MODULE])
+AC_DEFUN([AX_PYTHON_MODULE],[
+    if test -z $PYTHON;
+    then
+        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 $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
+])
-- 
2.39.2