Support to build executables against the NDK
Use "LOCAL_SDK_VERSION := <number>" to build against the NDK when you
include $(BUILD_EXECUTABLE).
Bug: 7170098
Change-Id: I4cebeae3355e79a4d2f2f5549ef0613ced77e3f0
diff --git a/core/executable.mk b/core/executable.mk
index baebc3b..d6f383b 100644
--- a/core/executable.mk
+++ b/core/executable.mk
@@ -26,10 +26,38 @@
include $(BUILD_SYSTEM)/dynamic_binary.mk
+# Define PRIVATE_ variables from global vars
+my_target_global_ld_dirs := $(TARGET_GLOBAL_LD_DIRS)
+my_target_global_ldflags := $(TARGET_GLOBAL_LDFLAGS)
+my_target_fdo_lib := $(TARGET_FDO_LIB)
+my_target_libgcc := $(TARGET_LIBGCC)
+my_target_crtbegin_dynamic_o := $(TARGET_CRTBEGIN_DYNAMIC_O)
+my_target_crtbegin_static_o := $(TARGET_CRTBEGIN_STATIC_O)
+my_target_crtend_o := $(TARGET_CRTEND_O)
+ifdef LOCAL_SDK_VERSION
+# Make sure the prebuilt NDK paths are put ahead of the TARGET_GLOBAL_LD_DIRS,
+# so we don't have race condition when the system libraries (such as libc, libstdc++) are also built in the tree.
+my_target_global_ld_dirs := \
+ $(addprefix -L, $(patsubst %/,%,$(dir $(my_ndk_stl_shared_lib_fullpath))) \
+ $(my_ndk_version_root)/usr/lib) \
+ $(my_target_global_ld_dirs)
+my_target_global_ldflags := $(my_ndk_stl_shared_lib) $(my_target_global_ldflags)
+my_target_crtbegin_dynamic_o := $(wildcard $(my_ndk_version_root)/usr/lib/crtbegin_dynamic.o)
+my_target_crtbegin_static_o := $(wildcard $(my_ndk_version_root)/usr/lib/crtbegin_static.o)
+my_target_crtend_o := $(wildcard $(my_ndk_version_root)/usr/lib/crtend_android.o)
+endif
+$(linked_module): PRIVATE_TARGET_GLOBAL_LD_DIRS := $(my_target_global_ld_dirs)
+$(linked_module): PRIVATE_TARGET_GLOBAL_LDFLAGS := $(my_target_global_ldflags)
+$(linked_module): PRIVATE_TARGET_FDO_LIB := $(my_target_fdo_lib)
+$(linked_module): PRIVATE_TARGET_LIBGCC := $(my_target_libgcc)
+$(linked_module): PRIVATE_TARGET_CRTBEGIN_DYNAMIC_O := $(my_target_crtbegin_dynamic_o)
+$(linked_module): PRIVATE_TARGET_CRTBEGIN_STATIC_O := $(my_target_crtbegin_static_o)
+$(linked_module): PRIVATE_TARGET_CRTEND_O := $(my_target_crtend_o)
+
ifeq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
-$(linked_module): $(TARGET_CRTBEGIN_STATIC_O) $(all_objects) $(all_libraries) $(TARGET_CRTEND_O)
+$(linked_module): $(my_target_crtbegin_static_o) $(all_objects) $(all_libraries) $(my_target_crtend_o)
$(transform-o-to-static-executable)
-else
-$(linked_module): $(TARGET_CRTBEGIN_DYNAMIC_O) $(all_objects) $(all_libraries) $(TARGET_CRTEND_O)
+else
+$(linked_module): $(my_target_crtbegin_dynamic_o) $(all_objects) $(all_libraries) $(my_target_crtend_o)
$(transform-o-to-executable)
endif