From 99cf7293f9eb943e00e2ebca6eee0e36eaa801bd Mon Sep 17 00:00:00 2001
From: Bernhard Reutner-Fischer
Date: Mon, 12 Feb 2007 13:38:06 +0000
Subject: - add cc-option and use it to check for stuff that is benefical for
 PREFER_IMA - backport the libbackend.o gcov-iov.h dependency fixup from 4.2
 to 4.0

---
 Makefile | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 80e314c6a..6cb05d30c 100644
--- a/Makefile
+++ b/Makefile
@@ -38,6 +38,13 @@ endif
 
 ifeq ($(strip $(BR2_HAVE_DOT_CONFIG)),y)
 
+# cc-option
+# Usage: cflags-y += $(call cc-option, -march=winchip-c6, -march=i586)
+# sets -march=winchip-c6 if supported else falls back to -march=i586
+# without checking the latter.
+cc-option = $(shell if $(TARGET_CC) $(TARGET_CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
+	> /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
+
 #############################################################
 #
 # The list of stuff to build for the target toolchain
-- 
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