构建android-ndk？

Question

我想建立一个离线语音识别应用程序为android.For，我试图建立安卓NDK.But时，我给ndk-build命令，我得到了以下错误。我不知道这是什么意思，因为我是非常新的Linux environment..Anyone，请帮助我。

 Android NDK: Could not find application project directory !    
    Android NDK: Please define the NDK_PROJECT_PATH variable to point to it.    
    /home/cenuser/android/android-ndk-r7b/build/core/build-local.mk:130: *** Android NDK: Aborting    .  Stop.

当我把位置改为我得到了这个

/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:760:26: error: pocketsphinx.h: No such file or directory
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:761:28: error: sphinxbase/err.h: No such file or directory
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c: In function 'new_Hypothesis':
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:780: warning: initialization makes pointer from integer without a cast
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:782: warning: assignment makes pointer from integer without a cast
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:784: warning: assignment makes pointer from integer without a cast
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c: In function 'new_Config__SWIG_0':
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:795: error: 'FALSE' undeclared (first use in this function)
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:795: error: (Each undeclared identifier is reported only once
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:795: error: for each function it appears in.)
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c: In function 'new_Config__SWIG_1':
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:799: error: 'FALSE' undeclared (first use in this function)
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c: In function 'Config_getString':
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:830: warning: return makes pointer from integer without a cast
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c: In function 'new_Decoder__SWIG_0':
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:839: error: 'FALSE' undeclared (first use in this function)
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c: In function 'new_Decoder__SWIG_1':
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:843: warning: initialization makes pointer from integer without a cast
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c: In function 'Decoder_getConfig':
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:847: warning: return makes pointer from integer without a cast
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c: In function 'Decoder_getUttid':
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:856: warning: return makes pointer from integer without a cast
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c: In function 'Decoder_getHyp':
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:869: error: 'int32' undeclared (first use in this function)
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:869: error: expected ';' before 'best_score'
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:870: error: 'best_score' undeclared (first use in this function)
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c: In function 'Java_edu_cmu_pocketsphinx_pocketsphinxJNI_Decoder_1processRaw_1_1SWIG_10':
/home/cenuser/android/sphinx/PocketSphinxDemo/jni/pocketsphinx_wrap.c:1441: warning: assignment discards qualifiers from pointer target type
make: *** [/home/cenuser/android/sphinx/PocketSphinxDemo/obj/local/armeabi/objs-debug/pocketsphinx_jni/pocketsphinx_wrap.o] Error 1

Answer 1

1. 从终端转到ndk根文件夹
2. 键入带有项目路径的命令

your_project_path -build -C ndk

这将解决问题。如果需要有关"ndk-build“命令的更多信息，只需键入命令

    ndk-build --help

Answer 2

当您从不正确的目录调用ndk-build时，通常会发生这种情况。您必须在包含JNI子目录的文件夹中。

或者执行错误消息告诉您的操作-指定NDK_PROJECT_PATH以更正文件夹。

Answer 3

在运行ndk-build命令时，需要声明该位置的路径

1. cd
2. ndk-build ndk