Question

我正在编译本机源并使用.a libs添加依赖项以及具有以下结构的相关头文件。

/ JNI /

Android.mk

LOCAL_PATH := $(call my-dir)
include $(call all-subdir-makefiles)

include $(CLEAR_VARS)

LOCAL_LDLIBS := -llog
LOCAL_MODULE    := ndk1
LOCAL_SRC_FILES := native.c
LOCAL_STATIC_LIBRARY := mschema 
include $(BUILD_SHARED_LIBRARY)

native.c

/ JNI / prereqs /

Android.mk

LOCAL_PATH := $(call my-dir)

include $(call all-subdir-makefiles)

include $(CLEAR_VARS)

- 用于调用子文件夹mk文件

/ JNI / prereqs / mschema /

Android.mk

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE    :=mschema
LOCAL_SRC_FILES :=libmschema.a
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include

include $(PREBUILT_STATIC_LIBRARY)

libmschema.a

/ JNI / prereqs / mschema /包括

标题文件。（.h）中

但是在尝试使用ndk-build（NDK5）时，我收到了以下错误。

marcos@marcos-AY675AA-AC4-s5320br:~/dev/workspace/rmsdk.native.wraper$ ndk-buildmake:
 *** No rule to make target `/home/marcos/dev/workspace/rmsdk.native.wraper/jni/prereqs/mschema/native.c', needed by `/home/marcos/dev/workspace/rmsdk.native.wraper/obj/local/armeabi/objs/ndk1/native.o'.  Stop.

键入时我注意到错误是关于/home/marcos/dev/workspace/rmsdk.native.wraper/jni/prereqs/mschema/native.c' and actually this file is under / home / marcos / dev / workspace / rmsdk.native.wraper / jni / native.c'，我的make文件有什么问题？

将第一个Android.mk更改为以下内容可以避免此问题：

LOCAL_PATH := $(call my-dir)
include $(call all-subdir-makefiles)
LOCAL_PATH :=/home/marcos/dev/workspace/rmsdk.native.wraper/jni
include $(CLEAR_VARS)
LOCAL_LDLIBS := -llog
LOCAL_MODULE    := ndk1
LOCAL_SRC_FILES := native.c
LOCAL_STATIC_LIBRARY := mschema
include $(BUILD_SHARED_LIBRARY)

但它看起来不对劲。有更好的方法吗？

Answer 1

从NDK 5中的Docs，解决方案是创建一个局部变量..

我-DIR 返回最后包含的Makefile的路径，通常是当前的Android.mk目录。这对定义很有用你的Android.mk开头的LOCAL_PATH和：

    LOCAL_PATH := $(call my-dir)

IMPORTANT NOTE: Due to the way GNU Make works, this really returns
the path of the *last* *included* *Makefile* during the parsing of
build scripts. Do not call my-dir after including another file.

所以......为了解决这个问题，我将Android.mk更改为以下内容。

 LOCAL_PATH := $(call my-dir)
 MY_PATH := $(LOCAL_PATH)
 include $(call all-subdir-makefiles)

 include $(CLEAR_VARS)

 LOCAL_PATH := $(MY_PATH)

 LOCAL_LDLIBS := -llog -ldl
 LOCAL_MODULE    := rmsdk
 LOCAL_SRC_FILES := native.c

 include $(BUILD_SHARED_LIBRARY)

及其作品。

Answer 2

我认为在包含子makefile之后def def本地路径是正确的。

LOCAL_PATH := $(call my-dir)
 MY_PATH := $(LOCAL_PATH)
 include $(call all-subdir-makefiles)

 include $(CLEAR_VARS)

 LOCAL_PATH := $(MY_PATH)

 LOCAL_LDLIBS := -llog -ldl
 LOCAL_MODULE    := rmsdk
 LOCAL_SRC_FILES := native.c

 include $(BUILD_SHARED_LIBRARY)

看起来不对劲。我想你可以尝试一下：

 include $(call all-subdir-makefiles)

 include $(CLEAR_VARS)

 LOCAL_PATH := $(call my-dir)

 LOCAL_LDLIBS := -llog -ldl
 LOCAL_MODULE    := rmsdk
 LOCAL_SRC_FILES := native.c

 include $(BUILD_SHARED_LIBRARY)

希望它有所帮助。

没有规则来制作目标NDK

2 个答案: