From 6c2ee7a790f92e422e727e5639281a786432ec66 Mon Sep 17 00:00:00 2001
From: Francesco Salvestrini <address@hidden>
Date: Fri, 18 Sep 2009 00:08:15 +0200
Subject: [PATCH 1/3] Introduced AX_GCC_LIBRARIES_DIR

---
 m4/ax_gcc_libraries_dir.m4 |   64 ++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 64 insertions(+), 0 deletions(-)
 create mode 100644 m4/ax_gcc_libraries_dir.m4

diff --git a/m4/ax_gcc_libraries_dir.m4 b/m4/ax_gcc_libraries_dir.m4
new file mode 100644
index 0000000..4e2579c
--- /dev/null
+++ b/m4/ax_gcc_libraries_dir.m4
@@ -0,0 +1,64 @@
+# ===========================================================================
+#       http://www.nongnu.org/autoconf-archive/ax_gcc_libraries_dir.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_GCC_LIBRARIES_DIR(VARIABLE)
+#
+# DESCRIPTION
+#
+#   AX_GCC_LIBRARIES_DIR(VARIABLE) defines VARIABLE as the gcc libraries
+#   directory. The libraries directory will be obtained using the gcc
+#   -print-search-dirs option. This macro requires AX_GCC_OPTION macro.
+#
+#   Thanks to Alessandro Massignan for his helpful hints.
+#
+# LICENSE
+#
+#   Copyright (c) 2009 Francesco Salvestrini <address@hidden>
+#
+#   This program is free software; you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation; either version 2 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   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/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+AC_DEFUN([AX_GCC_LIBRARIES_DIR], [
+    AC_REQUIRE([AC_PROG_CC])
+    AC_REQUIRE([AC_PROG_SED])
+
+    AS_IF([test "x$GCC" = "xyes"],[
+        AX_GCC_OPTION([-print-search-dirs],[],[],[
+            AC_MSG_CHECKING([gcc libraries directory])
+            ax_gcc_libraries_dir="`$CC -print-search-dirs | $SED -n -e 's,^libraries:[ \t]*=,,p'`"
+            AC_MSG_RESULT([$ax_gcc_libraries_dir])
+            $1="$ax_gcc_libraries_dir"
+        ],[
+            unset $1
+        ])
+    ],[
+        AC_MSG_WARN([sorry, no gcc available])
+        unset $1
+    ])
+])
-- 
1.6.3.3