包括来自预建库 Android.mk 的头文件

Question

我使用

在我的库创建中包含了一个预建库

include $(PREBUILT_SHARED_LIBRARY)

通过使用是否包含经过验证的天气库

$(modules-get-list)

当我尝试在预建库中包含一个头文件时，我遇到了找不到头文件的错误。以下是我的确切 Android.mk 文件

LOCAL_PATH := $(call my-dir)

# import prebuilt-library
include $(CLEAR_VARS)
LOCAL_MODULE    := prebuilt-library
LOCAL_SRC_FILES := ../../../target/dependency/libs/$(TARGET_ARCH_ABI)/libprebuilt.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)

# building provider interface library for communication
include $(CLEAR_VARS)
LOCAL_MODULE := library-interface
LOCAL_SRC_FILES := LibraryComminicator.cpp
LOCAL_SHARED_LIBRARIES := prebuilt-library

include $(BUILD_SHARED_LIBRARY)

$(warning Existing modules: "$(modules-get-list)")

# Include the Android Maven plugin generated makefile
# Important: Must be the last import in order for Android Maven Plugins paths to work
include $(ANDROID_MAVEN_PLUGIN_MAKEFILE)

Answer 1

试试下面的Android.mk：

LOCAL_PATH := $(call my-dir)
EXT_LIB_ROOT := $(LOCAL_PATH)/../../../target/dependency # or whatever

# building provider interface library for communication
include $(CLEAR_VARS)
LOCAL_MODULE := library-interface
LOCAL_SRC_FILES := LibraryComminicator.cpp
LOCAL_SHARED_LIBRARIES := prebuilt-library

include $(BUILD_SHARED_LIBRARY)

# import prebuilt-library
LOCAL_PATH := $(EXT_LIB_ROOT)
include $(CLEAR_VARS)
LOCAL_MODULE    := prebuilt-library
LOCAL_SRC_FILES := libs/$(TARGET_ARCH_ABI)/libprebuilt.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)

$(warning Existing modules: "$(modules-get-list)")

基本规则是：xxx_INCLUDE_FILES 应该相对于“当前目录”，而 LOCAL_SRC_FILES 相对于 $(LOCAL_PATH)，而不是相对于“当前目录”。使用 NDK，“当前目录”通常是 $(LOCAL_PATH)/..，但这可能会改变，尤其是如果 Android.mk 文件被链接，即一个包含另一个文件。

对于 PREBUILT_SHARED_LIBRARY 模块，您确实不需要 LOCAL_PATH，但我更喜欢使 LOCAL_SRC_FILES 尽可能短。