Do not assume CLANG is used when custom toolchain is provided

When overriding toolchain with LOCAL_CC, LOCAL_CXX
build system shall not assume that this custom toolchain
is CLANG.

Bug: 29635686
Change-Id: I9712d098216740c4ff20bd2a4749f489af85b50e
Signed-off-by: Alexey Polyudov <apolyudov@google.com>

diff --git a/core/binary.mk b/core/binary.mk
index 77362e3..439235b 100644 (file)
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -268,6 +268,13 @@ ifdef LOCAL_CLANG_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)
 my_clang := $(strip $(LOCAL_CLANG_$($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)))
 endif
 
+# if custom toolchain is in use, default is not to use clang, if not explicitly required
+ifneq ($(my_cc)$(my_cxx),)
+    ifeq ($(my_clang),)
+        my_clang := false
+    endif
+endif
+
 # clang is enabled by default for host builds
 # enable it unless we've specifically disabled clang above
 ifdef LOCAL_IS_HOST_MODULE