[recipes] Move AC_USE_SYSTEM_EXTENSIONS up in configure.ac

[Matthias Clasen <matthiasc src gnome org>]

commit aee884d3fd224371ebd82442ae2470a1de18ec97
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Dec 7 06:59:35 2016 -0500

    Move AC_USE_SYSTEM_EXTENSIONS up in configure.ac
    
    autoconf seems unhappy otherwise.

 configure.ac |   16 ++++++++--------
 1 files changed, 8 insertions(+), 8 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 5561c05..a13acf5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -24,6 +24,14 @@ AC_CONFIG_MACRO_DIRS([m4])
 AC_SUBST([ACLOCAL_AMFLAGS], "-I m4 -I libgd")
 AC_CANONICAL_HOST
 
+dnl ***********************************************************************
+dnl Add extra debugging with --enable-debug and --enable-compile-warnings
+dnl ***********************************************************************
+AX_CHECK_ENABLE_DEBUG([no],[]
+                      [G_DISABLE_ASSERT G_DISABLE_CHECKS G_DISABLE_CAST_CHECKS])
+
+AC_USE_SYSTEM_EXTENSIONS
+
 
 dnl ***********************************************************************
 dnl Make version information available to autoconf files
@@ -44,13 +52,6 @@ AX_GENERATE_CHANGELOG
 
 
 dnl ***********************************************************************
-dnl Add extra debugging with --enable-debug and --enable-compile-warnings
-dnl ***********************************************************************
-AX_CHECK_ENABLE_DEBUG([no],[]
-                      [G_DISABLE_ASSERT G_DISABLE_CHECKS G_DISABLE_CAST_CHECKS])
-
-
-dnl ***********************************************************************
 dnl Internationalization
 dnl ***********************************************************************
 GETTEXT_PACKAGE=AC_PACKAGE_TARNAME
@@ -79,7 +80,6 @@ VAPIGEN_CHECK
 
 
 AX_COMPILER_FLAGS
-AC_USE_SYSTEM_EXTENSIONS
 
 
 dnl ***********************************************************************