Add host_toolchain_header path if defined
host_toolchain_header may be defined for build in MacOSX
when SDK 10.8 is selected in build/core/combo/HOST_darwin-x86.mk.
It points to prebuilts/gcc/darwin-x86/host/i686-apple-darwin-4.2.1/
lib/gcc/i686-apple-darwin1?/4.2.1/include for headers such as stdarg.h
no longer provided by MacOSX SDK since 10.8
See https://android-review.googlesource.com/#/c/46202
Change-Id: Id7321ae0d8a56098bb0646d2ff7ddee9601565a9
diff --git a/Makefile.android b/Makefile.android
index c7d43af..267bffe 100644
--- a/Makefile.android
+++ b/Makefile.android
@@ -72,7 +72,9 @@
ifeq ($(HOST_OS),darwin)
MY_CFLAGS += -mdynamic-no-pic -D_DARWIN_C_SOURCE=1
-
+ ifneq ($(host_toolchain_header),)
+ MY_CFLAGS += -isystem $(host_toolchain_header)
+ endif
MY_CFLAGS += -isysroot $(mac_sdk_root) -mmacosx-version-min=$(mac_sdk_version) -DMACOSX_DEPLOYMENT_TARGET=$(mac_sdk_version)
MY_LDLIBS += -isysroot $(mac_sdk_root) -Wl,-syslibroot,$(mac_sdk_root) -mmacosx-version-min=$(mac_sdk_version)
