? ? ? 關于Valgrind的介紹可以參考：https://blog.csdn.net/fengbingchun/article/details/50196189.

? ? ? 這里介紹下在Ubuntu 16.04上通過android toolchain如android-ndk-r14b交叉編譯Valgrind源碼的操作步驟：

? ? ? 1.?從 https://valgrind.org/ 下載最新的版本3.17.0，解壓縮，并將終端定位到主目錄；

? ? ? 2.?從官網https://developer.android.com/ndk/downloads/older_releases#ndk-14b-downloads下載android-ndk-r14b并解壓縮；

? ? ? 3.?編寫腳本build_android.sh，內容如下：此腳本既支持armv7也支持aarch64，在valgrind主目錄下執行此腳本

#! /bin/bashif [ $# != 1 ]; thenecho "usage: $0 system_architect"echo "e.g: build armv7: $0 0; build aarch64: $0 1"exit 1
fiif [ $1 != 0 -a $1 != 1 ]; thenecho "input param can only be 0 or 1: \"$0 0\" or \"$0 1\""exit 1
fitoolchain_path=${HOME}/Disk/Soft/android-ndk-r14b
echo "toolchain path: ${toolchain_path}"if [ $1 == 0 ]; thenecho "build android armv7"export AR=${toolchain_path}/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-arexport LD=${toolchain_path}/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ldexport CC=${toolchain_path}/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gccexport CXX=${toolchain_path}/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-g++export RANLIB=${toolchain_path}/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-ranlibexport STRIP=${toolchain_path}/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-stripbash autogen.shCPPFLAGS="--sysroot=${toolchain_path}/platforms/android-21/arch-arm" \CFLAGS="--sysroot=${toolchain_path}/platforms/android-21/arch-arm" \./configure \--prefix=/ \--host=armv7-unknown-linux \--target=armv7-unknown-linux \--with-tmpdir=/sdcardmake -j4make install DESTDIR=`pwd`/install_armv7
fiif [ $1 == 1 ]; thenecho "build android aarch64"export AR=${toolchain_path}/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/aarch64-linux-android-arexport LD=${toolchain_path}/ttoolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/aarch64-linux-android-ldexport CC=${toolchain_path}/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/aarch64-linux-android-gccexport CXX=${toolchain_path}/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/aarch64-linux-android-g++export RANLIB=${toolchain_path}/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/aarch64-linux-android-ranlibexport STRIP=${toolchain_path}/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/aarch64-linux-android-stripbash autogen.shCPPFLAGS="--sysroot=${toolchain_path}/platforms/android-21/arch-arm64" \CFLAGS="--sysroot=${toolchain_path}/platforms/android-21/arch-arm64" \./configure \--prefix=/ \--host=aarch64-unknown-linux \--target=aarch64-unknown-linux \--with-tmpdir=/sdcardmake -j4make install DESTDIR=`pwd`/install_aarch64
fi

? ? ? 4.?解決編譯時的error:oredump-elf.c:149:4:?error:?conflicting?types?for?'Elf32_Nhdr',修改源碼coregrind/m_coredump/coredump-elf.c，將文件中結構體名Elf32_Nhdr調整為Elf32_Nhdr_,此結構體好像并沒有用到

? ? ? 5.?執行完腳本后，會在valgrind主目錄下生成install_armv7和install_aarch64目錄，結構如下：bin目錄下存放著valgrind可執行文件，libexec/valgrind目錄下存放著所需的動態庫。注意：(1).valgrind的舊版本動態庫的存放位置是lib/valgrind目錄；(2).在編譯完armv7或aarch64后，如繼續編譯另一個架構，需先執行make clean，再執行./build_android.sh 0或./build_android.sh 1

?? ? ? 6.?將install_armv7或install_aarch64拷貝到手機上，查看valgrind版本，結果如下：可見valgrind執行正確。注意：(1).新版本valgrind的VALGRIND_LIB為./install_aarch64/libexec/valgrind，在舊版本中為./install_aarch64/lib/valgrind；(2).當測試的可執行文件依賴其它動態庫時，需要用LD_LIBRARY_PATH指定依賴動態庫所在的目錄；(3).如在執行過程中，遇到類似以下錯誤時"valgrind:?Can't?create?client?cmdline?file?in?/data/local/tmp/valgrind_proc_xxxx_cmdline_yyyyyyyy",在原有命令基礎上，添加TMPDIR=.?即可，如TMPDIR=.?VALGRIND_LIB=./install_aarch64/libexec/valgrind?LD_LIBRARY_PATH=target/android-aarch64/ ./install_aarch64/bin/valgrind --leak-check=full --log-file=log.txt ./build/CppBaseTest

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