Android-ndk生成错误命令

Question

我有一个问题，android ndk-build 没有将我的共享库复制到 intermediates/ndkbuild 文件夹。我在 Android.mk 中创建了我的模块，如下所示：

Android.mk

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
EXT_LIB_ROOT := $(LOCAL_PATH)/../prebuilt/dcmtk

LOCAL_MODULE := ofstd
LOCAL_SRC_FILES := $(EXT_LIB_ROOT)/ofstd/lib/$(TARGET_ARCH_ABI)/libofstd.so
LOCAL_EXPORT_C_INCLUDES := $(EXT_LIB_ROOT)/ofstd/include
include $(PREBUILT_SHARED_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE := oflog
LOCAL_SRC_FILES := $(EXT_LIB_ROOT)/oflog/lib/$(TARGET_ARCH_ABI)/liboflog.so
LOCAL_EXPORT_C_INCLUDES := $(EXT_LIB_ROOT)/oflog/include
LOCAL_SHARED_LIBRARIES := ofstd
include $(PREBUILT_SHARED_LIBRARY)

它构建并且生成的命令是：

D:\android-sdk\ndk-bundle\\build\ndk-build.cmd NDK_PROJECT_PATH=null APP_BUILD_SCRIPT=C:\dev\trunk\myApp\app\Android.mk NDK_APPLICATION_MK=C:\dev\trunk\myApp\app\Application.mk APP_ABI=x86 NDK_ALL_ABIS=x86 NDK_DEBUG=1 APP_PLATFORM=android-21 NDK_OUT=C:/dev/trunk/myApp/app/build/intermediates/ndkBuild/debug/obj NDK_LIBS_OUT=C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\lib APP_SHORT_COMMANDS=false LOCAL_SHORT_COMMANDS=false -B -n

现在，日志的输出是：

md "C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\lib\x86" >NUL 2>NUL || rem
D:/android-sdk/ndk-bundle/build//../prebuilt/windows-x86_64/bin/echo.exe [x86] "Gdbserver      ": "[i686-linux-android] C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\lib/x86/gdbserver"
copy /b/y "D:\android-sdk\ndk-bundle\build\\..\prebuilt\android-x86\gdbserver\gdbserver" "C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\lib\x86\gdbserver" > NUL
D:/android-sdk/ndk-bundle/build//../prebuilt/windows-x86_64/bin/echo.exe [x86] "Gdbsetup       ": "C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\lib/x86/gdb.setup"
D:/android-sdk/ndk-bundle/build//../prebuilt/windows-x86_64/bin/echo.exe "set solib-search-path C:/dev/trunk/myApp/app/build/intermediates/ndkBuild/debug/obj/local/x86" > C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\lib/x86/gdb.setup
D:/android-sdk/ndk-bundle/build//../prebuilt/windows-x86_64/bin/echo.exe "directory D:/android-sdk/ndk-bundle/build//../platforms/android-21/arch-x86 D:/android-sdk/ndk-bundle/build//../sources/cxx-stl/gnu-libstdc++ C:/dev/trunk/myApp/app/../prebuilt/dcmtk/ofstd/include" >> C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\lib/x86/gdb.setup
md "C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\obj\local\x86" >NUL 2>NUL || rem
D:/android-sdk/ndk-bundle/build//../prebuilt/windows-x86_64/bin/echo.exe [x86] "Prebuilt       ": "libofstd.so <= C:/dev/trunk/myApp/app/../prebuilt/dcmtk/ofstd/lib/x86/"
copy /b/y "C:\dev\trunk\myApp\app\..\prebuilt\dcmtk\ofstd\lib\x86\libofstd.so" "C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\obj\local\x86\libofstd.so" > NUL
D:/android-sdk/ndk-bundle/build//../prebuilt/windows-x86_64/bin/echo.exe [x86] "Install        ": "libofstd.so => C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\lib/x86/libofstd.so"
copy /b/y "C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\obj\local\x86\libofstd.so" "C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\lib\x86\libofstd.so" > NUL
D:/android-sdk/ndk-bundle/build//../toolchains/x86-4.9/prebuilt/windows-x86_64/bin/i686-linux-android-strip --strip-unneeded  C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\lib/x86/libofstd.so
D:/android-sdk/ndk-bundle/build//../prebuilt/windows-x86_64/bin/echo.exe [x86] "Prebuilt       ": "liboflog.so <= C:/dev/trunk/myApp/app/../prebuilt/dcmtk/oflog/lib/x86/"
copy /b/y "C:\dev\trunk\myApp\app\..\prebuilt\dcmtk\oflog\lib\x86\liboflog.so" "C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\obj\local\x86\liboflog.so" > NUL
D:/android-sdk/ndk-bundle/build//../prebuilt/windows-x86_64/bin/echo.exe [x86] "Install        ": "liboflog.so => C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\lib/x86/liboflog.so"
copy /b/y "C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\obj\local\x86\liboflog.so" "C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\lib\x86\liboflog.so" > NUL
D:/android-sdk/ndk-bundle/build//../toolchains/x86-4.9/prebuilt/windows-x86_64/bin/i686-linux-android-strip --strip-unneeded  C:\dev\trunk\myApp\app\build\intermediates\ndkBuild\debug\lib/x86/liboflog.so

很遗憾，没有文件被复制或生成。通过从命令行运行相同的命令，结果是相同的。但是，如果我们跳过命令末尾的 -n 标志，则命令会成功完成并复制文件。所以，我的问题是如何省略 -n 以及该标志的目的是什么？ 我正在使用最新的稳定版 ndk。

Answer 1

1. 检查项目文件夹中 local.properties 文件中的 ndk 路径。 它显示了用于构建 makefile 的 ndk-bundle 路径。

   ndk.dir=/Users/../Library/Android/sdk/ndk-bundle
   

2. 检查 gradle 文件中的构建脚本。此脚本显示共享库的位置：

   sourceSets.main {
      jni.srcDirs = []
      jniLibs.srcDir 'src/main/libs'
   }
   

   这显示了 ndk-building 的 makefile 路径：

   externalNativeBuild {
       ndkBuild {
           path 'src/main/jni/Android.mk'
       }
   }
   

也请检查我的另一个答案，也许它会对您有所帮助。 Linking shared libraries