我最近发现，从 ndk-build 链接预构建的静态库与从 android 源代码树 (mm) 中链接有根本的不同。这是为什么？
// main.cpp
#include <stdio.h>
#include "doubler.hpp"
int main()
{
printf("test a static lib \n");
// library function
doubler *p = new doubler();
delete p;
return 0;
}
安卓手机:
LOCAL_PATH := $(call my-dir)
###################### static lib ##################
### prebuilt lib works in NDK but not Android src
#include $(CLEAR_VARS)
#LOCAL_MODULE := doubleIt_prebuilt
#LOCAL_SRC_FILES := $(LOCAL_PATH)/libDoubler.a
#LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)
##LOCAL_SRC_FILES := libDoubler.a
#include $(PREBUILT_STATIC_LIBRARY)
###################### test app ##################
include $(CLEAR_VARS)
# binary name
LOCAL_MODULE:= testApp
# c++ file extension
LOCAL_CPP_EXTENSION := .cpp
# src files
LOCAL_SRC_FILES := main.cpp
# include dir
LOCAL_C_INCLUDES := $(LOCAL_PATH)
### this works in Android src, but not in NDK
LOCAL_LDLIBS := -L$(LOCAL_PATH) -lDoubler
### prebuilt lib works in NDK but not Android src
#LOCAL_STATIC_LIBRARIES := doubleIt_prebuilt
#what to build
include $(BUILD_EXECUTABLE)
最终，在 src 树中链接静态库的正确方法是什么？
最佳答案
Why is this?
ndk-build 和 AOSP 构建系统是两个完全不同的构建系统，不幸的是它们看起来非常相似。
Ultimately, what is the correct way to link a static lib in the src tree?
在 AOSP 树中？预建模块的定义不同。这里有几个例子:
include $(CLEAR_VARS)
LOCAL_MODULE := libbcc
LOCAL_SRC_FILES := $(HOST_OS)/lib64/$(LOCAL_MODULE)$(HOST_SHLIB_SUFFIX)
LOCAL_MODULE_CLASS := SHARED_LIBRARIES
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE_SUFFIX := $(HOST_SHLIB_SUFFIX)
LOCAL_IS_HOST_MODULE := true
LOCAL_MULTILIB := 64
include $(BUILD_PREBUILT)
include $(CLEAR_VARS)
LOCAL_IS_HOST_MODULE := true
LOCAL_MODULE := AdbWinApi
LOCAL_MODULE_CLASS := STATIC_LIBRARIES
LOCAL_SRC_FILES_x86 := AdbWinApi.a
LOCAL_MODULE_SUFFIX := .a
LOCAL_MULTILIB := 32
LOCAL_MODULE_HOST_OS := windows
include $(BUILD_PREBUILT)
然后您可以像使用任何其他库一样使用它们:LOCAL_STATIC_LIBRARIES := libmyprebuilt。以上两个示例都是针对主机模块的。对于目标模块，只需删除该行即可。
请注意，AOSP 的新(仍在开发中)构建系统 Soong 尚不支持预构建模块。这些现在只能在 Android.mk 文件中定义。
关于android - 链接预建静态库 ndk 与 Android 源代码，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39756620/