android和c 的区别,android – LOCAL_EXPORT_C_INCLUDES和LOCAL_C_INCLUDES之间的区别

如果模块将路径添加到LOCAL_EXPORT_C_INCLUDES,则这些路径将添加到另一个模块的LOCAL_C_INCLUDES定义中,该模块使用LOCAL_STATIC_LIBRARIES或LOCAL_SHARED_LIBRARIES.

考虑我们有2个模块,例如foo和bar以及是树结构.

.

|-- Android.mk

|-- bar

| |-- bar.c

| |-- bar.h

|-- foo

|-- foo.c

`-- foo.h

bar使用foo作为静态库.由于bar.c需要包含foo.h,因此foo模块必须添加LOCAL_EXPORT_C_INCLUDES的包含路径.如果任何模块都没有使用bar,那么它可以添加到LOCAL_C_INCLUDES的包含路径.

Android.mk将如下所示：

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE := foo

LOCAL_SRC_FILES := foo/foo.c

LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/foo

include $(BUILD_STATIC_LIBRARY)

include $(CLEAR_VARS)

LOCAL_MODULE := bar

LOCAL_SRC_FILES := bar/bar.c

LOCAL_C_INCLUDES := $(LOCAL_PATH)/bar

LOCAL_STATIC_LIBRARIES := foo

include $(BUILD_SHARED_LIBRARY)

请看一下android-ndk示例目录中提供的示例：android-ndk-r9d / samples / module-exports