From 81f898e2b7f74497e05efba0667e6bae4aae324f Mon Sep 17 00:00:00 2001
From: William S Fulton <wsf@fultondesigns.co.uk>
Date: Mon, 19 May 2003 21:59:45 +0000
Subject: [PATCH] Autoconf archive macro to maximise warnings (gcc only)

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@4799 626c5289-ae23-0410-ae9c-e8d60b6d4f22
---
 Tools/config/ac_compile_warnings.m4 | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 Tools/config/ac_compile_warnings.m4

diff --git a/Tools/config/ac_compile_warnings.m4 b/Tools/config/ac_compile_warnings.m4
new file mode 100644
index 000000000..ca1a85f78
--- /dev/null
+++ b/Tools/config/ac_compile_warnings.m4
@@ -0,0 +1,28 @@
+dnl Available from the GNU Autoconf Macro Archive at:
+dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_compile_warnings.html
+dnl
+AC_DEFUN([AC_COMPILE_WARNINGS],
+[AC_MSG_CHECKING(maximum warning verbosity option)
+if test -n "$CXX"
+then
+  if test "$GXX" = "yes"
+  then
+    ac_compile_warnings_opt='-Wall'
+  fi
+  CXXFLAGS="$CXXFLAGS $ac_compile_warnings_opt"
+  ac_compile_warnings_msg="$ac_compile_warnings_opt for C++"
+fi
+
+if test -n "$CC"
+then
+  if test "$GCC" = "yes"
+  then
+    ac_compile_warnings_opt='-Wall'
+  fi
+  CFLAGS="$CFLAGS $ac_compile_warnings_opt"
+  ac_compile_warnings_msg="$ac_compile_warnings_msg $ac_compile_warnings_opt for C"
+fi
+AC_MSG_RESULT($ac_compile_warnings_msg)
+unset ac_compile_warnings_msg
+unset ac_compile_warnings_opt
+])