diff --git a/core/binary.mk b/core/binary.mk
index 73b3bd9..e78f6a5 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -337,12 +337,11 @@
 ###########################################################
 ifndef LOCAL_IS_HOST_MODULE
 ifdef LOCAL_SDK_VERSION
-my_target_project_includes :=
-my_target_c_includes := $(my_ndk_stl_include_path) $(my_ndk_sysroot_include)
+my_target_global_c_includes := $(my_ndk_stl_include_path) $(my_ndk_sysroot_include)
 my_target_global_cppflags := $(my_ndk_stl_cppflags)
 else
-my_target_project_includes := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_PROJECT_INCLUDES)
-my_target_c_includes := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_C_INCLUDES)
+my_target_global_c_includes := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_PROJECT_INCLUDES) \
+    $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_C_INCLUDES)
 my_target_global_cppflags :=
 endif # LOCAL_SDK_VERSION
 
@@ -358,8 +357,7 @@
 my_target_global_ldflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_GLOBAL_LDFLAGS)
 endif # my_clang
 
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_TARGET_PROJECT_INCLUDES := $(my_target_project_includes)
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_TARGET_C_INCLUDES := $(my_target_c_includes)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_GLOBAL_C_INCLUDES := $(my_target_global_c_includes)
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_TARGET_GLOBAL_CFLAGS := $(my_target_global_cflags)
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_TARGET_GLOBAL_CONLYFLAGS := $(my_target_global_conlyflags)
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_TARGET_GLOBAL_CPPFLAGS := $(my_target_global_cppflags)
@@ -367,21 +365,22 @@
 
 else # LOCAL_IS_HOST_MODULE
 
+my_host_global_c_includes := $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)PROJECT_INCLUDES) \
+    $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)C_INCLUDES)
+
 ifeq ($(my_clang),true)
 my_host_global_cflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)CLANG_$(my_prefix)GLOBAL_CFLAGS)
 my_host_global_conlyflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)CLANG_$(my_prefix)GLOBAL_CONLYFLAGS)
 my_host_global_cppflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)CLANG_$(my_prefix)GLOBAL_CPPFLAGS)
 my_host_global_ldflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)CLANG_$(my_prefix)GLOBAL_LDFLAGS)
-my_host_c_includes := $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)C_INCLUDES)
 else
 my_host_global_cflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)GLOBAL_CFLAGS)
 my_host_global_conlyflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)GLOBAL_CONLYFLAGS)
 my_host_global_cppflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)GLOBAL_CPPFLAGS)
 my_host_global_ldflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)GLOBAL_LDFLAGS)
-my_host_c_includes := $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)C_INCLUDES)
 endif # my_clang
 
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_HOST_C_INCLUDES := $(my_host_c_includes)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_GLOBAL_C_INCLUDES := $(my_host_global_c_includes)
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_HOST_GLOBAL_CFLAGS := $(my_host_global_cflags)
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_HOST_GLOBAL_CONLYFLAGS := $(my_host_global_conlyflags)
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_HOST_GLOBAL_CPPFLAGS := $(my_host_global_cppflags)
diff --git a/core/config.mk b/core/config.mk
index b179881..d497dbb 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -684,7 +684,7 @@
 
 ifdef HOST_CROSS_2ND_ARCH
 $(HOST_CROSS_2ND_ARCH_VAR_PREFIX)HOST_CROSS_GLOBAL_LD_DIRS := -L$($(HOST_CROSS_2ND_ARCH_VAR_PREFIX)HOST_CROSS_OUT_INTERMEDIATE_LIBRARIES)
-$(HOST_CROSS_2ND_ARCH_VAR_PREFIX)HOST_CROSS_PROJECT_INCLUDES:= $(SRC_HEADERS) $($(HOST_CROSS_2ND_ARCH_VAR_PREFIX)HOST_CROSS_OUT_HEADERS)
+$(HOST_CROSS_2ND_ARCH_VAR_PREFIX)HOST_CROSS_PROJECT_INCLUDES:= $(HOST_CROSS_PROJECT_INCLUDES)
 endif
 endif
 
diff --git a/core/definitions.mk b/core/definitions.mk
index a1df134..6bd9cf0 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -1149,19 +1149,24 @@
 	$(filter %.dbus-xml,$^)
 endef
 
+###########################################################
+## Helper to set include paths form transform-*-to-o
+###########################################################
+define c-includes
+$(addprefix -I , $(PRIVATE_C_INCLUDES)) \
+$$(cat $(PRIVATE_IMPORT_INCLUDES))\
+$(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),,\
+    $(addprefix -isystem ,\
+        $(filter-out $(PRIVATE_C_INCLUDES), \
+            $(PRIVATE_GLOBAL_C_INCLUDES))))
+endef
 
 ###########################################################
 ## Commands for running gcc to compile a C++ file
 ###########################################################
 
 define transform-cpp-to-o-compiler-args
-	$(addprefix -I , $(PRIVATE_C_INCLUDES)) \
-	$$(cat $(PRIVATE_IMPORT_INCLUDES)) \
-	$(addprefix -isystem ,\
-	    $(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
-	        $(filter-out $(PRIVATE_C_INCLUDES), \
-	            $(PRIVATE_TARGET_PROJECT_INCLUDES) \
-	            $(PRIVATE_TARGET_C_INCLUDES)))) \
+	$(c-includes) \
 	-c \
 	$(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
 	    $(PRIVATE_TARGET_GLOBAL_CFLAGS) \
@@ -1207,13 +1212,7 @@
 
 # $(1): extra flags
 define transform-c-or-s-to-o-compiler-args
-	$(addprefix -I , $(PRIVATE_C_INCLUDES)) \
-	$$(cat $(PRIVATE_IMPORT_INCLUDES)) \
-	$(addprefix -isystem ,\
-	    $(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
-	        $(filter-out $(PRIVATE_C_INCLUDES), \
-	            $(PRIVATE_TARGET_PROJECT_INCLUDES) \
-	            $(PRIVATE_TARGET_C_INCLUDES)))) \
+	$(c-includes) \
 	-c \
 	$(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
 	    $(PRIVATE_TARGET_GLOBAL_CFLAGS) \
@@ -1299,13 +1298,7 @@
 ###########################################################
 
 define transform-host-cpp-to-o-compiler-args
-	$(addprefix -I , $(PRIVATE_C_INCLUDES)) \
-	$$(cat $(PRIVATE_IMPORT_INCLUDES)) \
-	$(addprefix -isystem ,\
-	    $(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
-	        $(filter-out $(PRIVATE_C_INCLUDES), \
-	            $($(PRIVATE_PREFIX)PROJECT_INCLUDES) \
-	            $(PRIVATE_HOST_C_INCLUDES)))) \
+	$(c-includes) \
 	-c \
 	$(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
 	    $(PRIVATE_HOST_GLOBAL_CFLAGS) \
@@ -1348,13 +1341,7 @@
 ###########################################################
 
 define transform-host-c-or-s-to-o-common-args
-	$(addprefix -I , $(PRIVATE_C_INCLUDES)) \
-	$$(cat $(PRIVATE_IMPORT_INCLUDES)) \
-	$(addprefix -isystem ,\
-	    $(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
-	        $(filter-out $(PRIVATE_C_INCLUDES), \
-	            $($(PRIVATE_PREFIX)PROJECT_INCLUDES) \
-	            $(PRIVATE_HOST_C_INCLUDES)))) \
+	$(c-includes) \
 	-c \
 	$(if $(PRIVATE_NO_DEFAULT_COMPILER_FLAGS),, \
 	    $(PRIVATE_HOST_GLOBAL_CFLAGS) \