[PATCH] add AX_RESTORE_FLAGS and AX_SAVE_FLAGS

[Filippo Giunchedi]

shamelessy copied from the great VLC
---
 doc/autoconf-archive.texi |    2 ++
 m4/ax_restore_flags.m4    |   29 +++++++++++++++++++++++++++++
 m4/ax_save_flags.m4       |   29 +++++++++++++++++++++++++++++
 3 files changed, 60 insertions(+), 0 deletions(-)
 create mode 100644 m4/ax_restore_flags.m4
 create mode 100644 m4/ax_save_flags.m4

diff --git a/doc/autoconf-archive.texi b/doc/autoconf-archive.texi
index 46751f6..8ae0d5c 100644
--- a/doc/autoconf-archive.texi
+++ b/doc/autoconf-archive.texi
@@ -471,7 +471,9 @@ The Macros:
 * ax_python_module::
 * ax_require_one_func::
 * ax_rpm_init::
+* ax_restore_flags::
 * ax_ruby_devel::
+* ax_save_flags::
 * ax_set_default_paths_system::
 * ax_short_sleep::
 * ax_silent_mode::
diff --git a/m4/ax_restore_flags.m4 b/m4/ax_restore_flags.m4
new file mode 100644
index 0000000..acf0d6c
--- /dev/null
+++ b/m4/ax_restore_flags.m4
@@ -0,0 +1,29 @@
+# ===========================================================================
+#        http://www.nongnu.org/autoconf-archive/ax_restore_flags.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_RESTORE_FLAGS()
+#
+# DESCRIPTION
+#
+#   Restore common compilation flags from temporary variables
+#
+# LICENSE
+#
+#   Copyright (c) 2009 Filippo Giunchedi <address@hidden>
+#
+#   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.
+
+AC_DEFUN([AX_RESTORE_FLAGS], [
+  CPPFLAGS="${CPPFLAGS_save}"
+  CFLAGS="${CFLAGS_save}"
+  CXXFLAGS="${CXXFLAGS_save}"
+  OBJCFLAGS="${OBJCFLAGS_save}"
+  LDFLAGS="${LDFLAGS_save}"
+  LIBS="${LIBS_save}"
+])
diff --git a/m4/ax_save_flags.m4 b/m4/ax_save_flags.m4
new file mode 100644
index 0000000..9d598a8
--- /dev/null
+++ b/m4/ax_save_flags.m4
@@ -0,0 +1,29 @@
+# ===========================================================================
+#        http://www.nongnu.org/autoconf-archive/ax_save_flags.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_SAVE_FLAGS()
+#
+# DESCRIPTION
+#
+#   Save common compilation flags into temporary variables
+#
+# LICENSE
+#
+#   Copyright (c) 2009 Filippo Giunchedi <address@hidden>
+#
+#   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.
+
+AC_DEFUN([AX_SAVE_FLAGS], [
+  CPPFLAGS_save="${CPPFLAGS}"
+  CFLAGS_save="${CFLAGS}"
+  CXXFLAGS_save="${CXXFLAGS}"
+  OBJCFLAGS_save="${OBJCFLAGS}"
+  LDFLAGS_save="${LDFLAGS}"
+  LIBS_save="${LIBS}"
+])
-- 
1.6.6