From 6e781eb2c497353aeb3f4ecfbc5950b4a1d8c0eb Mon Sep 17 00:00:00 2001
From: Yang Tse <yangsita@gmail.com>
Date: Mon, 8 Sep 2008 16:48:58 +0000
Subject: [PATCH] Select strict ANSI C89 conformance for icc

---
 configure.ac | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/configure.ac b/configure.ac
index 6a8cf7d..fe8a7a7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -229,6 +229,20 @@ else
   AC_MSG_RESULT([no])
 fi
 
+AC_MSG_CHECKING([whether we are using the Intel C compiler])
+CURL_CHECK_DEF([__INTEL_COMPILER], [], [silent])
+if test "$curl_cv_have_def___INTEL_COMPILER" = "yes"; then
+  AC_MSG_RESULT([yes])
+  dnl Select strict ANSI C conformance
+  CFLAGS="$CFLAGS -strict-ansi"
+  dnl Select ANSI C dialect
+  CFLAGS="$CFLAGS -std=c89"
+  dnl Disable use of ANSI C aliasing rules in optimizations
+  CFLAGS="$CFLAGS -no-ansi-alias"
+else
+  AC_MSG_RESULT([no])
+fi
+
 AC_MSG_CHECKING([whether we are using the DEC/Compaq C compiler])
 CURL_CHECK_DEF([__DECC], [], [silent])
 CURL_CHECK_DEF([__DECC_VER], [], [silent])