Android build gdbserver

目前android2.2 和android2.3上的prebuilt gdbserver一执行就会报错segmentfault，prebuilt的gdbserver是静态编译的，这样做是为了让gdb能跨android的各个版本使用，但这个做法并没有考虑到kernel和libc的多样性。所以就出现了segment fault。  

从android issue上看到这样的解决办法，具体做法就从git上下载gdb的代码然后重新编译  

注：凡是路径最好是使用绝对路径 避免configure的时候会出问题 

#[ENVIRONMENT] 

export NDK=~/android/android-ndk-r5b && 

export SDK=~/android/android-sdk-linux_x86 && 

export PATH=~/bin:${PATH}:$NDK:$SDK/tools:$SDK/platform-tools && 

export ANDROID_SRC=~/myandroid  

#[I ASSUME YOU HAVE THE SDK & NDK ALREADY]  

如果已经有 gingerbread的代码就不需下载了，直接下载gdb 代码 

#[OBTAIN GINGERBREAD AOSP IF YOU HAVEN'T ALREADY] 

mkdir -p ~/bin && 

mkdir -p $ ANDROID_SRC && 

cd $ ANDROID_SRC && 

curl http://android.git.kernel.org/repo > ~/bin/repo && 

chmod a+x ~/bin/repo && 

repo init -u git://android.git.kernel.org/platform/manifest.git -b gingerbread && 

repo sync   

#[CONFIGURE ENV FOR ANDROID_SRC (REQUIRED)] 

cd $ ANDROID_SRC && 

. build/envsetup.sh && 

lunch full-eng   

#[BUILD AOSP IF YOU HAVEN'T ALREADY] 

time make -j4    

# substitute appropriate '-j#' for your CPU.   

#[OBTAIN AND PATCH GDB SOURCES] 

mkdir -p ~/src/gdb_build && 

pushd ~/src/gdb_build && 

在我下载的时候android.git.kernel.org听说被黑了或者关闭了，所以用了一个第三方的git git://android.git.linaro.org/  

git clone git://android.git.kernel.org/toolchain/gdb.git && 

git clone git://android.git.kernel.org/toolchain/build.git && 

cd gdb && 

patch -p1 <$ANDROID_SRC/ndk/build/tools/toolchain-patches/gdb/0001-Proper-libthread_db-support-in-gdbserver.patch && patch -p1 <$ANDROID_SRC/ndk/build/tools/toolchain-patches/gdb/0002-Fix-signal-handling-in-gdbserver-6.6.patch && 

popd   

#[INITIALIZE SYSROOT] 

pushd ~/src/gdb_build && ./build/build-sysroot.sh $ANDROID_SRC/out/target/product/generic ~/src/gdb_build/sysroot && popd   

#[USE ANDROID_SRC PREBUILT TOOLCHAIN, NOT NDK'S TOOLCHAIN] 

cd $ ANDROID_SRC && 

rm -Rf $ANDROID_SRC/toolchains/arm-eabi-4.4.3/prebuilt && 

mkdir -p $ANDROID_SRC/toolchains/arm-eabi-4.4.3/prebuilt && 

pushd $ANDROID_SRC/toolchains/arm-eabi-4.4.3/prebuilt && 

ln -s $ANDROID_SRC/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3 linux-x86 && 

popd   

#[BUILD GDBSERVER 6.6] 

$ANDROID_SRC/ndk/build/tools/build-gdbserver.sh \         

~/src/gdb_build $ ANDROID_SRC \         

arm-eabi-4.4.3 --verbose \         

--build-out=$ANDROID_SRC/src/gdb_build/install \         

--gdb-version=6.6 --sysroot=$ANDROID_SRC/src/gdb_build/sysroot   

#[COPY NEW GDBSERVER OVER NDK'S BROKEN GDBSERVER] 

mv $NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/gdbserver $NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/gdbserver.orig && cp ~/src/gdb_build/install/gdbserver $NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/gdbserver

转自：http://blog.163.com/data05_198/blog/static/1306428062011822563885/