From 638095fa8f3c21b416745ac705051bfebb7fa6b5 Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Thu, 10 Nov 2011 19:32:03 +0000
Subject: [PATCH] platform/clang_darwin: Improve the "can we build for this
 arch test" by checking that the standard includes we use in compiler-rt also
 work.

llvm-svn: 144305
---
 compiler-rt/make/platform/clang_darwin.mk           | 3 ++-
 compiler-rt/make/platform/clang_darwin_test_input.c | 5 +++++
 2 files changed, 7 insertions(+), 1 deletion(-)
 create mode 100644 compiler-rt/make/platform/clang_darwin_test_input.c

diff --git a/compiler-rt/make/platform/clang_darwin.mk b/compiler-rt/make/platform/clang_darwin.mk
index 38a54696dd24..b3d36f829aa5 100644
--- a/compiler-rt/make/platform/clang_darwin.mk
+++ b/compiler-rt/make/platform/clang_darwin.mk
@@ -12,7 +12,8 @@ CheckArches = \
   $(shell \
     result=""; \
     for arch in $(1); do \
-      if $(CC) -arch $$arch -c -x c /dev/null \
+      if $(CC) -arch $$arch -c \
+	  $(ProjSrcRoot)/make/platform/clang_darwin_test_input.c \
 	  -o /dev/null > /dev/null 2> /dev/null; then \
         result="$$result$$arch "; \
       fi; \
diff --git a/compiler-rt/make/platform/clang_darwin_test_input.c b/compiler-rt/make/platform/clang_darwin_test_input.c
new file mode 100644
index 000000000000..5a8898b8b42a
--- /dev/null
+++ b/compiler-rt/make/platform/clang_darwin_test_input.c
@@ -0,0 +1,5 @@
+/* Include the headers we use in int_lib.h, to verify that they work. */
+
+#include <limits.h>
+#include <stdint.h>
+#include <math.h>