如何在android ndk中编译dsplink应用程序开发jni包装器

Question

我已经在android omapl138板上运行了dsplink应用程序，我可以在终端中运行该应用程序。我已经在ndk中包含了dsplink应用程序，并尝试使用以下Android.mk进行编译

LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS)

LOCAL_LDLIBS += $(LOCAL_PATH)/dsplink.a

LOCAL_C_INCLUDES += C:\dsplink_1_65_01_05_eng\dsplink\gpp\export\INCLUDE\Linux\OMAPL138\sys
LOCAL_C_INCLUDES += C:\dsplink_1_65_01_05_eng\dsplink\gpp\export\INCLUDE\Linux\OMAPL138\usr
LOCAL_C_INCLUDES += C:\dsplink_1_65_01_05_eng\dsplink\gpp\inc\sys\linux
LOCAL_C_INCLUDES += C:\dsplink_1_65_01_05_eng\dsplink\gpp\src\api
LOCAL_C_INCLUDES += C:\dsplink_1_65_01_05_eng\dsplink\gpp\export\INCLUDE\Linux\OMAPL138\internal
LOCAL_C_INCLUDES += C:\dsplink_1_65_01_05_eng\dsplink\gpp\export\INCLUDE\Linux\OMAPL138\sys\arch

LOCAL_MODULE    := libdsp-message
LOCAL_SRC_FILES := message.c message_os.c

include $(BUILD_SHARED_LIBRARY)

在编译时，我得到以下错误

"Compile thumb : dsp-message <= message.c

"Compile thumb : dsp-message <= message_os.c

SharedLibrary  : libdsp-message.so

C:/NDK/android-ndk-r8/samples/two-libs//jni/dsplink.a(dsplink.o): In
function `DRV_Initialize':
_sync_usr.c:(.text+0xb10): undefined reference to `getpagesize' C:/NDK/android-ndk-r8/samples/two-libs//jni/dsplink.a(dsplink.o): In
function `DRV_ProtectInit':
**_sync_usr.c:(.text+0x24b4): undefined reference to `semget'**
_sync_usr.c:(.text+0x24d4): undefined reference to `__errno_location'
_sync_usr.c:(.text+0x24f4): undefined reference to `semget'
_sync_usr.c:(.text+0x2538): undefined reference to `semctl' C:/NDK/android-ndk-r8/samples/two-libs//jni/dsplink.a(dsplink.o): In
function `DRV_ProtectExit':
_sync_usr.c:(.text+0x25dc): undefined reference to `semctl' C:/NDK/android-ndk-r8/samples/two-libs//jni/dsplink.a(dsplink.o): In
function `DRV_ProtectEnter':
_sync_usr.c:(.text+0x26b4): undefined reference to `semop'
_sync_usr.c:(.text+0x26c4): undefined reference to `__errno_location' C:/NDK/android-ndk-r8/samples/two-libs//jni/dsplink.a(dsplink.o): In
function `DRV_ProtectLeave':
_sync_usr.c:(.text+0x2800): undefined reference to `semop' C:/NDK/android-ndk-r8/samples/two-libs//jni/dsplink.a(dsplink.o): In
function `DRV_installCleanupRoutines':
_sync_usr.c:(.text+0x2898): undefined reference to `sigemptyset'
_sync_usr.c:(.text+0x28a4): undefined reference to `sigfillset' C:/NDK/android-ndk-r8/samples/two-libs//jni/dsplink.a(dsplink.o): In
function `NOTIFY_eventWorker':
_sync_usr.c:(.text+0x7ee4): undefined reference to `sigfillset' C:/NDK/android-ndk-r8/samples/two-libs//jni/dsplink.a(dsplink.o): In
function `_SYNC_USR_init':
_sync_usr.c:(.text+0x13ca8): undefined reference to `semget'
_sync_usr.c:(.text+0x13d30): undefined reference to `semctl' C:/NDK/android-ndk-r8/samples/two-libs//jni/dsplink.a(dsplink.o): In
function `_SYNC_USR_exit':
_sync_usr.c:(.text+0x13e34): undefined reference to `semget'
_sync_usr.c:(.text+0x13e84): undefined reference to `semctl' C:/NDK/android-ndk-r8/samples/two-libs//jni/dsplink.a(dsplink.o): In
function `_SYNC_USR_createCS':
_sync_usr.c:(.text+0x14008): undefined reference to `semget'
_sync_usr.c:(.text+0x14020): undefined reference to `__errno_location' C:/NDK/android-ndk-r8/samples/two-libs//jni/dsplink.a(dsplink.o): In
function `_SYNC_USR_enterCS':
_sync_usr.c:(.text+0x14358): undefined reference to `semop'
_sync_usr.c:(.text+0x14368): undefined reference to `__errno_location' C:/NDK/android-ndk-r8/samples/two-libs//jni/dsplink.a(dsplink.o): In
function `_SYNC_USR_leaveCS':
_sync_usr.c:(.text+0x144a0): undefined reference to `semop' collect2: ld returned 1 exit status 

make: ***
[C:/NDK/android-ndk-r8/samples/two-libs//obj/local/armeabi/libdsp-message.so]
Error 1

Answer 1

去年2月，当我试图为控制台构建dsplink示例时，我收到了关于semget的投诉。我的错误看起来与您未定义的引用相似。我发现我的错误是由于我试图使用标准Android划船项目提供的libc构建dsplink。当我用TI DSP源代码中的libc替换姜饼2.3.4源代码中的仿生libc时，它解决了我所有的libc引用错误。从这个经验来看，与基本的Android仿生库相比，在与DSP代码库一起使用的C库中似乎有更多对信号量的支持。

建议:我会确保您的Android.mk构建所指向的用于链接的C库是为DSP项目提供的C库，而不是默认的Android bionic libc。

这应该可以解决您的一些或大部分未定义的引用，但我不确定您的Android.mk中是否还有其他问题。