在查了很多资料后,
发现windows 平台上用ndk编译jrtplib的资料真是不好找
github上的一个哥们做的很有参考价值:https://github.com/jimjh/JRTPLib-for-Android
但一直没在windows上搞定,实在没办法,开虚拟机在ubuntu上把github上的代码clone下来,
编译成功后又研究了一下,总归最后在Windows上搞定了
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操作系统:windows 7
需要软件:
1 android-ndk-r8e
2 msys 2.4 (说明:这个是我安装railsinstaller-2.1.0.exe 自带的)
3 cmake 2.8.2
首先,还是jthread的编译,如果之前你用cmake和vs2010编译过这个jthread,
建议你重新换个目录把干净的源代码拷过来备用,不要混合这两个平台
在jthread目录下:
1 新建一个android.sh文件,
2 新建一个android-build目录以放置生成好的库及头文件
3 src/pthread/jthread.cpp的125行,找到pthread_cancel(threadid);并注释之,替换成 pthread_kill(threadid, SIGUSR1);
原因么,是因为android用的自家产的Bionic libc而不是标准glibc,具体可wikipedia之。
4 打开CMakeLists.txt,注释掉这一段:
# find_package(Threads) # if (NOT CMAKE_USE_WIN32_THREADS_INIT) # if (NOT CMAKE_USE_PTHREADS_INIT) # message(FATAL_ERROR "Can find neither pthread support nor Win32 thread support") # endif (NOT CMAKE_USE_PTHREADS_INIT) # endif (NOT CMAKE_USE_WIN32_THREADS_INIT)
输入以下内容(主要是参考的上面那个github的内容,根据新版的ndk做了修改,怕出问题又直接写的绝对路径,请根据实际情况修改)
我对原作的修改最主要的就是对cmake加了一行参数:
-G "MSYS Makefiles"
#!/bin/sh # Written by Nxf <[email protected]> # # Builds the JThread library for Android export NDK_ROOT="/D/Software/Develop/Android/android-ndk-r8e" export PATH="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/:${PATH}" SYS_ROOT="${NDK_ROOT}/platforms/android-8/arch-arm" PREF="arm-linux-androideabi-" OUT_DIR="`pwd`/android-build" C_FLAGS="-lstdc++ -lsupc++ \ -I${NDK_ROOT}/sources/cxx-stl/gnu-libstdc++/4.4.3/include \ -I${NDK_ROOT}/sources/cxx-stl/gnu-libstdc++/4.4.3/libs/armeabi/include \ -L${NDK_ROOT}/sources/cxx-stl/gnu-libstdc++/4.4.3/libs/armeabi" #set -e export CC="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}gcc --sysroot=${SYS_ROOT}" export CXX="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}g++ --sysroot=${SYS_ROOT}" export LD="$${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/{PREF}ld --sysroot=${SYS_ROOT}" export CPP="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}cpp --sysroot=${SYS_ROOT}" export AS="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}as" export OBJCOPY="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}objcopy" export OBJDUMP="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}objdump" export STRIP="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}strip" export RANLIB="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}ranlib" export CCLD="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}gcc --sysroot=${SYS_ROOT}" export AR="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}ar" cmake \ -DCMAKE_SYSTEM_NAME="Generic" \ -DCMAKE_CXX_FLAGS="${C_FLAGS}"\ -DCMAKE_FIND_ROOT_PATH="${SYS_ROOT}" \ -DCMAKE_INSTALL_PREFIX="${OUT_DIR}" \ -G "MSYS Makefiles" . /D/Software/Develop/Android/android-ndk-r8e/prebuilt/windows/bin/make.exe /D/Software/Develop/Android/android-ndk-r8e/prebuilt/windows/bin/make.exe install cd ${OUT_DIR}/lib && \ ${AR} -x libjthread.a && \ ${CXX} ${C_FLAGS} -shared -Wl,-soname,libjthread.so -o libjthread.so *.obj && \ rm *.obj exit 0
在msys命令行下运行这个android.sh就能生成jthread类库了
同理,到jrtplib文件夹下:
1 新建android.sh
2 新建android_build文件夹
3 打开CMakeLists.txt,找到第125行并注释掉: add_subdirectory(examples)
原因是我编译的时候发现样例编译有问题,干脆就不用了,反正库文件用不到这个
编辑android.sh内容如下:
(需要注意的是jthread库的目录位置,要根据实际情况调整)
#!/bin/sh # # Builds the JThread library for Android export NDK_ROOT="/D/Software/Develop/Android/android-ndk-r8e" export PATH="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/:${PATH}" SYS_ROOT="${NDK_ROOT}/platforms/android-8/arch-arm" PREF="arm-linux-androideabi-" OUT_DIR="`pwd`/android-build" # C_FLAGS="-lstdc++ -lsupc++ \ # -I${NDK_ROOT}/sources/cxx-stl/gnu-libstdc++/4.4.3/include \ # -I${NDK_ROOT}/sources/cxx-stl/gnu-libstdc++/4.4.3/libs/armeabi/include \ # -L${NDK_ROOT}/sources/cxx-stl/gnu-libstdc++/4.4.3/libs/armeabi" C_FLAGS=" -lc \ -lgcc \ -lstdc++ -lsupc++ \ -I${NDK_ROOT}/sources/cxx-stl/gnu-libstdc++/4.4.3/include \ -I${NDK_ROOT}/sources/cxx-stl/gnu-libstdc++/4.4.3/libs/armeabi/include \ -L../jthread-1.3.1/android-build/lib \ -L${NDK_ROOT}/sources/cxx-stl/gnu-libstdc++/4.4.3/libs/armeabi" #set -e export CC="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}gcc --sysroot=${SYS_ROOT}" export CXX="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}g++ --sysroot=${SYS_ROOT}" export LD="$${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/{PREF}ld --sysroot=${SYS_ROOT}" export CPP="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}cpp --sysroot=${SYS_ROOT}" export AS="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}as" export OBJCOPY="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}objcopy" export OBJDUMP="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}objdump" export STRIP="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}strip" export RANLIB="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}ranlib" export CCLD="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}gcc --sysroot=${SYS_ROOT}" export AR="${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/${PREF}ar" cmake \ -DCMAKE_SYSTEM_NAME="Generic" \ -DCMAKE_CXX_FLAGS="${C_FLAGS}"\ -DCMAKE_FIND_ROOT_PATH="${SYS_ROOT}" \ -DJTHREAD_INCLUDE_DIRS="../JThread-Android/android-build/include" \ -DJTHREAD_LIBRARIES="../JThread-Android/android-build/lib" \ -DCMAKE_PREFIX_PATH="../JThread-Android/android-build" \ -DCMAKE_INSTALL_PREFIX="${OUT_DIR}" \ -G "MSYS Makefiles" . /D/Software/Develop/Android/android-ndk-r8e/prebuilt/windows/bin/make.exe /D/Software/Develop/Android/android-ndk-r8e/prebuilt/windows/bin/make.exe install cd ${OUT_DIR}/lib && \ # ${AR} -x libjthread.a && \ # ${CXX} ${C_FLAGS} -shared -Wl,-soname,libjthread.so -o libjthread.so *.obj && \ ${AR} -x libjrtplib.a && \ ${CXX} ${C_FLAGS} -shared -Wl,-soname,libjrtplib.so -o libjrtplib.so *.obj && \ rm *.obj exit 0
运行android.sh即可生成库文件。
最后生成的动态和静态链接库文件就可以用到android项目里面做开发了。
下一步,android调用jrtplib与pc机进行通讯。