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构建 Android NDK？

android-ndk
6

我想要为Android构建一个离线语音识别应用程序。为此，我尝试构建Android NDK。但是当我执行ndk-build命令时，我遇到了以下错误。由于我对Linux环境非常陌生，我不知道这是什么意思。请问有人能帮助我吗？

 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.

当我将位置更改为时，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
5个回答
16
  1. 打开终端并进入NDK根目录

  2. 使用您的项目路径输入命令

ndk-build -C your_project_path
这将解决问题。如果您想获得有关"ndk-build"命令的更多信息，请键入该命令。 
    ndk-build --help
9

当你从错误的目录中调用ndk-build时，通常会出现这种情况。你必须在包含jni子目录的文件夹中。

或者按照错误信息所说的做法 - 指定正确的文件夹到NDK_PROJECT_PATH中。

NDK_PROJECT_PATH=/home/cenuser/android/sphinx/PocketSphinxDemo export=NDK_PROJECT_PATH 已定义。 - Soumya
3

在运行 ndk-build 命令时，您需要声明位置路径。
1. 进入所需目录
2. 运行命令：ndk-build NDK_PROJECT_PATH=【位置路径】

1
  1. 进入 /build/core 目录
  2. 将 NDK_PROJECT_PATH 更改为应用程序项目路径
  3. 打开终端
  4. 进入项目文件夹
  5. 运行 NDK_BUILD 命令
0
这个问题可以如下解决： 我曾经遇到过同样的问题。当时我正在开发一个文本识别应用程序。
1- You should go the directory of your folder (which is inside the AndroidStudioProjects - "YOUR PROJECT", 

2- There should be a jni (Java Native interface) folder. Search for this folder. whenever, this is found. 

3- cd in cmd to that folder (The Parent folder of jni).

4- run **ndk-build**
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