Question

我无法找到Android NDK module importation feature的实际示例。以下Android.mk文件看起来是正确的，内部模块构建并执行没有错误。但是，构建外部模块失败，并显示以下错误消息：

Android NDK：jni / inner / Android.mk：inner：LOCAL_MODULE_FILENAME不应包含文件扩展名
  Android NDK：jni / inner / Android.mk：inner：LOCAL_MODULE_FILENAME不得包含文件扩展名
  /home/caleb/dev/android-ndk-r8e/build/core/build-shared-library.mk:30： * Android NDK：正在中止。停止。

内置的Android.mk文件：

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE := inner
LOCAL_MODULE_FILENAME := libinner
LOCAL_SRC_FILES := inner-module.c

include $(BUILD_SHARED_LIBRARY)

外部，包含Android.mk文件：

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE := outer

$(call import-module,inner)

LOCAL_SHARED_LIBRARIES += inner

include $(BUILD_SHARED_LIBRARY)

Answer 1

尝试将调用放在外部文件末尾的import-module中。在引用“内部”之前放置它并不是必须的，NDK文档实际上建议您将它放在最后。

Answer 2

你正在做的事情有一些问题所以这就是事情的样子。

内置的Android.mk文件：

# save away the previous local path
INNER_SAVED_LOCAL_PATH := $(LOCAL_PATH)

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE := inner
LOCAL_MODULE_FILENAME := libinner
LOCAL_SRC_FILES := inner-module.c

include $(BUILD_SHARED_LIBRARY)
# at this point LOCAL_MODULE_FILENAME will have been auto
#  set to libinner.so or similar by the call to BUILD_SHARED_LIBRARY

# restore previous local path
LOCAL_PATH := $(INNER_SAVED_LOCAL_PATH)

外部，包含Android.mk文件：

LOCAL_PATH := $(call my-dir)

$(call import-module,inner)
# at this point
#  a) we've still got the correct LOCAL_PATH as we didn't trash it in
#     the included Android.mk file
#  b) LOCAL_MODULE_FILENAME is still set to libinner.so which if not
#     unset will cause BUILD_SHARED_LIBRARY to complain

include $(CLEAR_VARS)
# we've now got a clean slate

LOCAL_MODULE := outer

# the build system has 'remembered' the inner module
LOCAL_SHARED_LIBRARIES += inner

include $(BUILD_SHARED_LIBRARY)

我不确定这是方式，但它适用于我：）

Android NDK模块导入的最简单的工作示例是什么？

2 个答案: