From 737c03a75c62b3cd0ec92b33aea84d33dc39c2e7 Mon Sep 17 00:00:00 2001
From: Simon Wilkinson <sxw@inf.ed.ac.uk>
Date: Fri, 29 Feb 2008 15:07:08 +0000
Subject: [PATCH] configure-enable-warnings-20080228

LICENSE IPL10

add a switch to turn on warnings when using gcc
---
 acinclude.m4     | 3 +++
 src/cf/osconf.m4 | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/acinclude.m4 b/acinclude.m4
index 8c6b96b..07c043b 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -88,6 +88,9 @@ AC_ARG_ENABLE(debug-pam,
 AC_ARG_ENABLE(optimize-pam,
 [  --disable-optimize-pam		disable optimization for compilation of the PAM code (defaults to enabled)],, enable_optimize_pam="yes"
 )
+AC_ARG_ENABLE(warnings,
+[  --enable-warnings			enable compilation warnings when building with gcc (defaults to disabled)],, enable_warnings="no"
+)
 
 
 enable_login="no"
diff --git a/src/cf/osconf.m4 b/src/cf/osconf.m4
index fc2501b..4352724 100644
--- a/src/cf/osconf.m4
+++ b/src/cf/osconf.m4
@@ -1087,6 +1087,12 @@ else
   NO_STRIP_BIN=
 fi
 
+if test "x$enable_warnings" = "xyes"; then
+  if test "x$GCC" = "xyes"; then
+    XCFLAGS="${XCFLAGS} -Wall -Wstrict-prototypes -Wold-style-definition"
+  fi
+fi
+
 INSTALL_PROGRAM="${INSTALL_PROGRAM} ${NO_STRIP_BIN}"
 
 AC_SUBST(CCXPG2)
-- 
1.9.4