install_glibc.sh

linux下的多线程调试工具

#! /bin/sh

# syntax : ./install_glibc.sh glibc_install_dir
#                             glibc_src
#                             PTT_patch
#                             [-j jobs]
#                             [...]
# with 
# glibc_install_dir: path to glibc installation directory
# glibc_src:         path to glibc sources directory
# PTT_patch:         PTT patch for glibc
# jobs:              number of jobs to run simultaneously when building glibc
# [...]              arguments for glibc configure script

LIBCDIR=$1; echo $LIBCDIR | grep -q ^/ || LIBCDIR=`pwd`/$LIBCDIR
LIBCSRC=$2; echo $LIBCSRC | grep -q ^/ || LIBCSRC=`pwd`/$LIBCSRC
PATCH=$3

LIBCBUILD=$LIBCDIR/build
LIBCROOT=$LIBCDIR/libc_root
LIBCPATCHEDSRC=$LIBCDIR/patched_src

PREFIX=$LIBCROOT
PATCHEDPREFIX=$LIBCPATCHEDROOT
BUILD_ROOT=/

GLIBC_LIBPTHREAD=$LIBCROOT/lib/libpthread.so.0
GLIBC_PATCHEDLIBPTHREAD=$LIBCROOT/lib/libpthread_ptt.so.0

PTT_LIBDIR=../lib
PTT_LIBPTHREAD=$PTT_LIBDIR/libpthread.so.0
PTT_PATCHEDLIBPTHREAD=$PTT_LIBDIR/libpthread_ptt.so.0

INFOFLAGS=flags.txt

TEST_PATCH_FILE=$LIBCPATCHEDSRC/nptl/ptt_module.c

CUR_DIR=`pwd`

# test command syntax
if [ $# -lt 3 ]; then
    echo "Syntax error: $0 glibc_install_dir glibc_src PTT_patch [-j jobs] " \
         "[glibc_configure_arguments]"
    exit 1
else
    shift; shift; shift;
fi

# test whether given pathes are correct
if [ ! -d $LIBCDIR ]; then
    echo "Error: can't find directory $LIBCDIR"
    exit 1
fi
if [ ! -d $LIBCSRC ]; then
    echo "Error: can't find directory $LIBCSRC"
    exit 1
fi
if [ ! -f $PATCH ]; then
    echo "Error: can't find file $PATCH"
    exit 1
fi

# test whether glibc supports NPTL
if [ ! -d $LIBCSRC/nptl ]; then
    echo "Error: can't locate glibc NPTL sources in $LIBCSRC"
    exit 1
fi

# patch NPTL for use with PTT
if [ ! -f $TEST_PATCH_FILE ]; then
    echo "patching glibc sources..."
    rm -rf $LIBCPATCHEDSRC
    cp -r $LIBCSRC $LIBCPATCHEDSRC
    cp $PATCH $LIBCPATCHEDSRC
    cat $PATCH | patch -d $LIBCPATCHEDSRC -p1 || exit 1
    GLIBC_PATCHED=0
else
    echo "PTT patch already applied. skipping..."
    GLIBC_PATCHED=1
fi

# get number of jobs
JOBS=1
if [ $# -gt 0 ]; then if [ $1 = "-j" ]; then
    if [ -z $2 ]; then 
        echo "Syntax error: $0 glibc_install_dir glibc_src PTT_patch " \
             "[-j jobs] [glibc_configure_arguments]"
        exit 1
    fi
    JOBS=$2
    shift; shift
fi; fi

# build glibc with instrumented NPTL
if [ ! -f $GLIBC_PATCHEDLIBPTHREAD -o $GLIBC_PATCHED -eq 0 ]; then
    echo "building glibc with instrumented NPTL..."
    rm -rf $LIBCROOT $LIBCBUILD
    mkdir -p $LIBCROOT $LIBCBUILD
    cd $LIBCBUILD
    $LIBCPATCHEDSRC/configure --prefix=$PREFIX -without-selinux \
    --without-gd --enable-add-ons=nptl --with-tls --with-__thread \
    --disable-profile --with-ptt $@ || exit 1
    make PARALLELMFLAGS=-j$JOBS || exit 1
    mkdir -p $LIBCROOT/etc/
    > $LIBCROOT/etc/ld.so.conf
    make install_root=$BUILD_ROOT install || exit 1

    # change libpthread to libpthread_ptt
    cd $LIBCROOT/lib
    LIBPTHREAD_NAME=`/bin/ls libpthread-*`
    LIBPTHREAD_PTT_NAME=`echo $LIBPTHREAD_NAME | sed s/pthread/pthread_ptt/`
    mv $LIBPTHREAD_NAME $LIBPTHREAD_PTT_NAME
    ln -s $LIBPTHREAD_PTT_NAME libpthread_ptt.so.0
    rm -f libpthread.so.0 libpthread*a libpthread.so
else
    echo "glibc with instrumented NPTL already built. skipping..."
fi

# build glibc with original NPTL
if [ ! -f $GLIBC_LIBPTHREAD -o $GLIBC_PATCHED -eq 0 ]; then
    echo "building glibc with original NPTL..."
    rm -rf $LIBCBUILD; mkdir -p $LIBCBUILD
    cd $LIBCBUILD
    $LIBCPATCHEDSRC/configure --prefix=$PREFIX -without-selinux \
    --without-gd --enable-add-ons=nptl --with-tls --with-__thread \
    --disable-profile --without-ptt $@ || exit 1
    make PARALLELMFLAGS=-j$JOBS || exit 1
    make install_root=$BUILD_ROOT install || exit 1

    # glibc installation process creates symbolic links
    # libpthread.so.0 -> libpthread_ptt.so.0 (!?!)
    # instead of -> libpthread-2.3.6.so
    cd $LIBCROOT/lib
    LIBPTHREAD_NAME=`/bin/ls libpthread-*`
    rm -f libpthread.so.0
    ln -s $LIBPTHREAD_NAME libpthread.so.0
else
    echo "glibc with original NPTL already built. skipping..."
fi

cd $CUR_DIR

rm -f $PTT_LIBPTHREAD $PTT_PATCHEDLIBPTHREAD
cp $GLIBC_LIBPTHREAD $PTT_LIBPTHREAD
cp $GLIBC_PATCHEDLIBPTHREAD $PTT_PATCHEDLIBPTHREAD

LD=`/bin/ls $LIBCROOT/lib/ld-linux*`
echo "LDFLAGS=-Wl,-dynamic-linker,$LD -Wl,-rpath,$LIBCROOT/lib:/lib:/usr/lib"\
> $INFOFLAGS