Android动态库(so)的生成

路径定义以下用到的路径如下，如配有环境变量可省略:sclpath:Sourcery_CodeBench_Lite_for_ARM_GNU_Linux安装路径filepath:文件的路径jdkpath:jdk路径1安装jdk安装好后里面有个include文件夹，向里添加jawt_md.h和jni_md.h文件2下载SourceryCodeBenchLiteEditionforARM3编译java文件例:javac[filepath\]NativeJniAdder.javapackagecom.example.dynamiclibexample;importandroid.util.Log;publicclassNativeJniAdder{static{try{Log.i(JNI,TryingtoloadlibNativeJniAdder.so);System.loadLibrary(NativeJniAdder);}catch(UnsatisfiedLinkErrorule){Log.e(JNI,WARNING:GouldnotloadlibNativeJniAdder.so);}}publicstaticnativeintcalculate(intdigit_1,intdigit_2);}4生成.h文件例:javah[filepath\]om.example.dynamiclibexample.NativeJniAdder4编写c/c++文件通过上面生成的.h文件编写c/c++文件注：函数名字格式：Java_包名_类名_函数名#includecom_example_dynamiclibexample_NativeJniAdder.hJNIEXPORTjintJNICALLJava_com_example_dynamiclibexample_NativeJniAdder_calculate(JNIEnv*env,jclassc,jintdigit_1,jintdigit_2){intsum=digit_1+digit_2;returnsum;}5生成中间文件(.o)利用(.h)文件和(.c)文件生成(.o)文件例:[sclpath\]bin\arm-none-linux-gnueabi-gcc-I[jdkpath\]include-I[jdkpath\]include-fpic-nostdlib-c[filepath\]com_example_dynamiclibexample_NativeJniAdder.c6在cmd下检验(.o)文件例:[sclpath\]arm-none-linux-gnueabi-ld[filepath\]com_example_dynamiclibexample_NativeJniAdder.o如果提示有error的，说明编译出问题了7生成(.so)文件例:[sclpath\]arm-none-linux-gnueabi-ld-T[sclpath\]arm-none-linux-gnueabi\lib\ldscripts\armelf_linux_eabi.xsc-shared-o[filepath\]libNativeJniAdder.so[filepath\]com_example_dynamiclibexample_NativeJniAdder.o