jsoncpp 的 ndk-build 总是给出一个错误

Question

先决条件：我正在使用 Android Studio 2.1.2

我已经从以下 link

下载了 jsoncpp 的源代码

https://github.com/open-source-parsers/jsoncpp

我已经检查了以下 SO 线程，没有得到正确的解决方案：

LOCAL_MODULE_FILENAME should not include file extensions i get this error each time i run ndk-build in terminal

Using JsonCpp on X-Cross platform library

我的常用Android.mk如下：

LOCAL_PATH := $(call my-dir)

#JsonCpp lib

include $(CLEAR_VARS)

LOCAL_MODULE := jsoncpplib

include $(LOCAL_PATH)/jsnlib/Android.mk

LOCAL_STATIC_LIBRARIES := jsnlib

LOCAL_LDLIBS     += -llog -ldl

include $(BUILD_SHARED_LIBRARY)

还有用于构建其他一些库的代码，工作正常。

我的jsoncpp的Android.mk如下

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_C_INCLUDES := $(LOCAL_PATH)/jsnlib/include/json/*.h

FILE_LIST += $(wildcard $(LOCAL_PATH)/jsnlib/src/lib_json/*.cpp)

LOCAL_SRC_FILES := $(FILE_LIST:$(LOCAL_PATH)/%=%)

LOCAL_MODULE := jsnlib
LOCAL_MODULE_FILENAME:= libjsnlib

include $(BUILD_STATIC_LIBRARY)

当我执行 ndk-build 时总是出现以下错误

Android NDK: jni/jsnlib/Android.mk:jsnlib: LOCAL_MODULE_FILENAME should not include file extensions
Android NDK: jni/jsnlib/Android.mk:jsnlib: LOCAL_MODULE_FILENAME must not contain a file extension

Answer 1

这里发生的是，当您在定义 jsoncpplib 模块时，您包含了另一个 makefile，它包含自己的模块定义：

include $(CLEAR_VARS)
LOCAL_MODULE := jsoncpplib
include $(LOCAL_PATH)/jsnlib/Android.mk
LOCAL_STATIC_LIBRARIES := jsnlib
LOCAL_LDLIBS     += -llog -ldl
include $(BUILD_SHARED_LIBRARY)

您应该将另一个 makefile 的包含移动到您正在执行的位置之上 CLEAR_VARS:

include $(LOCAL_PATH)/jsnlib/Android.mk

include $(CLEAR_VARS)
LOCAL_MODULE := jsoncpplib
LOCAL_STATIC_LIBRARIES := jsnlib
LOCAL_LDLIBS     += -llog -ldl
include $(BUILD_SHARED_LIBRARY)

此外，LOCAL_MODULE_FILENAME:= libjsnlib 似乎是多余的，因为 LOCAL_MODULE := jsnlib 应该产生相同的库名称。

jsoncpp 的 ndk-build 总是给出一个错误

ndk-build for jsoncpp always giving one error

android-ndk

jsoncpp

android-studio