之前的版本发完，有空来更新一下之前的gcc和llvm+clang工具链的编译脚本了。其实GCC 7是才release没多久但是llvm 4.0发布其实有一段时间了。
第一是multilib的问题。之前的编译有时候是使用--disable-multilib来编译的。但是其实如果依赖库可以编译multilib就会自动开启，然后就有一些依赖库要自己编译multilib版本。
# install libatomic_ops
if [ -z "$BUILD_TARGET_COMPOMENTS" ] || [ "0" == $(is_in_list libatomic_ops $BUILD_TARGET_COMPOMENTS) ]; then
LIBATOMIC_OPS_PKG=$(check_and_download "libatomic_ops-7.4.4" "libatomic_ops-*.tar.gz" "https://github.com/ivmai/libatomic_ops/archive/libatomic_ops-7_4_4.tar.gz" "libatomic_ops-7_4_4.tar.gz" );
if [ $? -ne 0 ]; then
echo -e "$LIBATOMIC_OPS_PKG";
exit -1;
fi
tar -zxvf $LIBATOMIC_OPS_PKG;
LIBATOMIC_OPS_DIR=$(ls -d libatomic_ops-* | grep -v \.tar\.gz);
# cd $LIBATOMIC_OPS_DIR;
# bash ./autogen.sh ;
# ./configure --prefix=$PREFIX_DIR ;
# make $BUILD_THREAD_OPT && make install;
if [ $? -ne 0 ]; then
echo -e "\\033[31;1mError: build libatomic_ops failed.\\033[39;49;0m";
exit -1;
fi
cd "$WORKING_DIR";
fi
# install bdw-gc
if [ -z "$BUILD_TARGET_COMPOMENTS" ] || [ "0" == $(is_in_list bdw-gc $BUILD_TARGET_COMPOMENTS) ]; then
BDWGC_PKG=$(check_and_download "bdw-gc-7.6.0" "gc7_6_0.tar.gz" "https://github.com/ivmai/bdwgc/archive/gc7_6_0.tar.gz" "gc7_6_0.tar.gz" );
if [ $? -ne 0 ]; then
echo -e "$BDWGC_PKG";
exit -1;
fi
tar -zxvf $BDWGC_PKG;
BDWGC_DIR=$(ls -d bdwgc-gc* | grep -v \.tar\.gz);
cd $BDWGC_DIR;
bash ./autogen.sh ;
if [ ! -z "$LIBATOMIC_OPS_DIR" ]; then
if [ -e libatomic_ops ]; then
rm -rf libatomic_ops;
fi
mv -f ../$LIBATOMIC_OPS_DIR libatomic_ops;
$(cd libatomic_ops && bash ./autogen.sh );
BDWGC_LIBATOMIC_OPS=no ;
else
BDWGC_LIBATOMIC_OPS=check ;
fi
./configure --prefix=$PREFIX_DIR/multilib/$SYS_LONG_BIT --enable-cplusplus --with-pic=yes --enable-shared=no --enable-static=yes --with-libatomic-ops=$BDWGC_LIBATOMIC_OPS ;
make $BUILD_THREAD_OPT && make install;
if [ $? -ne 0 ]; then
echo -e "\\033[31;1mError: build bdw-gc failed.\\033[39;49;0m";
exit -1;
fi
if [ $SYS_LONG_BIT == "64" ] && [ "$GCC_OPT_DISABLE_MULTILIB" == "--enable-multilib" ] ; then
make distclean;
env CFLAGS=-m32 CPPFLAGS=-m32 ./configure --prefix=$PREFIX_DIR/multilib/32 --enable-cplusplus --with-pic=yes --enable-shared=no --enable-static=yes --with-libatomic-ops=$BDWGC_LIBATOMIC_OPS ;
make $BUILD_THREAD_OPT && make install;
if [ $? -ne 0 ]; then
echo -e "\\033[31;1mError: build bdw-gc with -m32 failed.\\033[39;49;0m";
exit -1;
fi
BDWGC_PREBIUILT="--with-target-bdw-gc=$PREFIX_DIR/multilib/$SYS_LONG_BIT,32=$PREFIX_DIR/multilib/32";
else
BDWGC_PREBIUILT="--with-target-bdw-gc=$PREFIX_DIR/multilib/$SYS_LONG_BIT";
fi
cd "$WORKING_DIR";
fi
再就是，以前看到gcc的用于gdb的python脚本已经支持Python 3了，我就把默认Python换成了Python 3。但是之前一直是使用我的开发机的内置Python 2的，所以编译没有问题。但是实际上gdb的编译脚本里并没有检测Python 2的，所以使用Python 2实际上编译不出来。所以这次又换回了 Python 2。
