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我在创建 Android 预建共享库时遇到问题。为了弄清楚我做错了什么，我按照谷歌的例子在 android-8.1.0_r52 树的 development/ndk/tests/prebuilt-library/jni 中找到了这个例子的源代码。

这是我配置 ASOP 的方法

  • $ . 构建/envsetup.sh
  • $ 午餐（我选择了 29 aosp_bullhead_userdebug）

然后在上面的 jni 文件夹中我发出“$ mm”

我得到的错误是（这与我的其他项目相同）

ninja: error: 'out/target/product/bullhead/obj/SHARED_LIBRARIES/foo-prebuilt_intermediates/export_includes', needed by 'out/target/product/bullhead/obj/SHARED_LIBRARIES/foo-user_intermediates/import_includes', missing and no known rule to make it

当我为“ foo ” grep out/target/products/bullhead 文件夹时，我什么也没得到。

我也尝试更换

包括 $(PREBUILT_SHARED_LIBRARY)

和

包括 $(BUILD_PREBUILT)

并得到相同的错误，但“obj”被“obj_arm”替换。

下面是树附带的库存 Android.mk。

LOCAL_PATH := $(call my-dir)

# Define BUILD_FOO=1 to rebuild libfoo.so from scratch, then
# copy obj/local/armeabi/libfoo.so to jni/libfoo.so
#
ifneq ($(BUILD_FOO),)

include $(CLEAR_VARS)
LOCAL_MODULE := foo
LOCAL_SRC_FILES := foo/foo.c
LOCAL_C_INCLUDES := $(LOCAL_PATH)/foo
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/foo
include $(BUILD_SHARED_LIBRARY)

else # not build libfoo.so, trying to use PREBUILT_SHARED_LIBRARY instead.

# Note: the module is named foo-prebuilt, but the library is libfool.so !
#
include $(CLEAR_VARS)
LOCAL_MODULE := foo-prebuilt
LOCAL_SRC_FILES := libfoo.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/foo
include $(PREBUILT_SHARED_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE := foo-user
LOCAL_SRC_FILES := foo-user.c
LOCAL_SHARED_LIBRARIES := foo-prebuilt
include $(BUILD_SHARED_LIBRARY)

endif

这是 jni/ 目录结构

  • 杰尼/

    • 安卓.mk

    • 富用户.c

    • libfoo.so

    • 富/

      • foo.c

      • foo.h

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