From d8a93ff67917fdc02f2539ba6f03edc09870f535 Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Mon, 8 Sep 2014 20:01:10 +0300
Subject: In configure add option --enable-sanitize

This option add run time checks for buffer overflows and some other
memory related things.

Not recommended for production.
---
 configure.in | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

(limited to 'configure.in')

diff --git a/configure.in b/configure.in
index e236c25fe..6b0604e07 100644
--- a/configure.in
+++ b/configure.in
@@ -271,6 +271,29 @@ AC_ARG_ENABLE(
 )
 
 
+#
+# adress sanitize
+#
+AC_ARG_ENABLE(
+	[sanitize],
+	AC_HELP_STRING(
+		[--enable-sanitize],
+		[
+			Enables or Disables Sanitize Address Checking (SANITIZE is disabled by default)
+		]
+	),
+	[
+		enable_sanitize="$enableval"
+		case $enableval in
+			"no");;
+			"yes");;
+			*) AC_MSG_ERROR([[invalid argument --enable-sanitize=$disableval... stopping]]);;
+		esac
+	],
+	[enable_sanitize="no"]
+)
+
+
 #
 # Renewal
 #
@@ -575,6 +598,39 @@ if test "$enable_lto" != "no" ; then
 fi
 
 
+#
+# sanitize Support test
+#
+if test "$enable_sanitize" != "no" ; then
+
+	OLD_CFLAGS="$CFLAGS"
+	CFLAGS="$CFLAGS -fsanitize=address"
+
+	OLD_LDFLAGS="$LDFLAGS"
+	LDFLAGS="$LDFLAGS -fsanitize=address"
+
+	AC_MSG_CHECKING([whether $CC supports -fsanitize=address])
+	AC_RUN_IFELSE(
+		[AC_LANG_SOURCE([
+			int main(int argc, char **argv){
+				return 0;
+			}
+		])],
+		[
+			AC_MSG_RESULT([yes])
+		],
+		[
+			AC_MSG_RESULT([no])
+			CFLAGS="$OLD_CFLAGS"
+			LDFLAGS="$OLD_LDFLAGS"
+		],
+		[
+			AC_MSG_RESULT([guessing no])
+		]
+	)
+fi
+
+
 AC_DEFUN(AC_CHECK_COMPILER_WFLAG,
 	[
 		AC_MSG_CHECKING([whether $CC supports -W$1])
-- 
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