platform/clang_darwin: Fix a refacto and commento.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@144913 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/make/platform/clang_darwin.mk b/make/platform/clang_darwin.mk
index 748da3b..76d127d 100644
--- a/make/platform/clang_darwin.mk
+++ b/make/platform/clang_darwin.mk
@@ -89,10 +89,10 @@
IOS_DEPLOYMENT_ARGS := -miphoneos-version-min=1.0
IOSSIM_DEPLOYMENT_ARGS := -miphoneos-version-min=1.0
-# If an explicit ARM_SDK build variable is set, use that as the isysroot.
-X86_OSX_DEPLOYMENT_ARGS += -isysroot $(ProjSrcRoot)/SDKs/darwin
-ARM_IOS_DEPLOYMENT_ARGS += -isysroot $(ProjSrcRoot)/SDKs/darwin
-X86_IOS_DEPLOYMENT_ARGS += -isysroot $(ProjSrcRoot)/SDKs/darwin
+# Use our stub SDK as the sysroot to support more portable building.
+OSX_DEPLOYMENT_ARGS += -isysroot $(ProjSrcRoot)/SDKs/darwin
+IOS_DEPLOYMENT_ARGS += -isysroot $(ProjSrcRoot)/SDKs/darwin
+IOSSIM_DEPLOYMENT_ARGS += -isysroot $(ProjSrcRoot)/SDKs/darwin
CFLAGS.eprintf := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
CFLAGS.10.4 := $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)