CentOS 6.8默认的gcc是4.4.7,需要将gcc升级到4.9,目前最新的是7.1,默认yum更新是无法升级到4.9的,这里我手动升级到4.9.
下载地址:http://gcc.skazkaforyou.com/releases
- [root@localhostsrc]#wget
- [root@localhostsrc]#wgethttp://gcc.skazkaforyou.com/releases/gcc-4.9.1/md5.sum
- [root@localhostsrc]#md5sumgcc-4.9.1.tar.bz2
- fddf71348546af523353bd43d34919c1gcc-4.9.1.tar.bz2
- [root@localhostsrc]#catmd5.sum
- fddf71348546af523353bd43d34919c1gcc-4.9.1.tar.bz2
- b188a3c9be25ddbf36b4fa6f04aaafaagcc-4.9.1.tar.gz
- b9fcbc7f54402170505ec0cde21d794fsha512.sum
- [root@localhostsrc]#tar-jxvfgcc-4.9.1.tar.bz2
- [root@localhostsrc]#cdgcc-4.9.1
- #下面脚本会自动帮你下载、配置、安装所需要的依赖文件和库,gcc需要gmp、mpfr、mpc
- [root@localhostgcc-4.9.1]#./contrib/download_prerequisites
- [root@localhostgcc-4.9.1]#rpm-qa|egrep"gmp|mpfr|mpc"
- gmp-4.3.1-10.el6.x86_64
- libmpcdec-1.2.6-6.1.el6.x86_64
- mpfr-2.4.1-6.el6.x86_64
- #建立输出目录并到目录里,将所有的中间文件都放到该目录,
- [root@localhostgcc-4.9.1]#mkdirgcc-build
- [root@localhostgcc-4.9.1]#cdgcc-build/
- [root@localhostgcc-build]#../configure--enable-checking=release--enable-languages=c,c++--disable-multilib
- [root@localhostgcc-build]#make
- [root@localhostgcc-build]#makeinstall
�Cenable-languages表示你要让你的gcc支持那些语言,
�Cdisable-multilib不生成编译为其他平台可执行代码的交叉编译器。如果不加该参数编译时候会提示configure: error: I suspect your system does not have 32-bit developement libraries (libc and headers). If you have them,rerun configure with --enable-multilib. If you do not have them,and want to build a 64-bit-only compiler,rerun configure with --disable-multilib.
�Cdisable-checking生成的编译器在编译过程中不做额外检查,也可以使用�Cenable-checking=xxx来增加一些检查;
make 非常耗时,我一台机器用了将近90分钟
- #验证:gcc-v;或者g++-v
- [root@localhost~]#gcc-v
- Usingbuilt-inspecs.
- COLLECT_GCC=gcc
- COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-unknown-linux-gnu/4.9.1/lto-wrapper
- Target:x86_64-unknown-linux-gnu
- Configuredwith:../configure--enable-checking=release--enable-languages=c,c++--disable-multilib
- Threadmodel:posix
- gccversion4.9.1(GCC)
- [root@localhost~]#g++-v
- Usingbuilt-inspecs.
- COLLECT_GCC=g++
- COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-unknown-linux-gnu/4.9.1/lto-wrapper
- Target:x86_64-unknown-linux-gnu
- Configuredwith:../configure--enable-checking=release--enable-languages=c,c++--disable-multilib
- Threadmodel:posix
- gccversion4.9.1(GCC)
- [root@localhostgcc-build]#whichgcc
- /usr/local/bin/gcc
- [root@localhostgcc-build]#/usr/local/bin/gcc-v
- Usingbuilt-inspecs.
- COLLECT_GCC=/usr/local/bin/gcc
- COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-unknown-linux-gnu/4.9.1/lto-wrapper
- Target:x86_64-unknown-linux-gnu
- Configuredwith:../configure--enable-checking=release--enable-languages=c,c++--disable-multilib
- Threadmodel:posix
- gccversion4.9.1(GCC)
- [root@localhostgcc-build]#
如果显示的gcc版本仍是以前的版本需要重新连接或者重启,或者可以查看gcc的安装位置:which gcc;然后在查看版本 /usr/local/bin/gcc -v,通常gcc都安装在该处位置
GMP,MPFR,MPC这三个库可以从ftp://gcc.gnu.org/pub/gcc/infrastructure/上下载,也可以直接从各自官网上下载:
http://gmplib.org/
http://www.mpfr.org/
http://www.multiprecision.org/
1、安装GMP
MPFR和MPC都依赖于GMP包,所以首先安装GMP
- [root@localhostsrc]#wgetftp://gcc.gnu.org/pub/gcc/infrastructure/gmp-4.3.2.tar.bz2
- [root@localhostsrc]#tarjxvfgmp-4.3.2.tar.bz2
- [root@localhostgmp-4.3.2]#./configure&&make&&makeinstall
可以使用配置参数--prefix=指定安装位置,这里使用默认/usr/local/include和/usr/local/lib
2、安装MPFR
- [root@localhostsrc]#wgetftp://gcc.gnu.org/pub/gcc/infrastructure/mpfr-2.4.2.tar.bz2
- [root@localhostsrc]#tar-jxvfmpfr-2.4.2.tar.bz2
- [root@localhostsrc]#cdmpfr-2.4.2
- [root@localhostmpfr-2.4.2]#./configure--with-gmp-include=/usr/local/include--with-gmp-lib=/usr/local/lib
- [root@localhostmpfr-2.4.2]#make&&makeinstall
3、安装MPC
- [root@localhostsrc]#wget
- [root@localhostsrc]#tar-zxvfmpc-0.8.1.tar.gz
- [root@localhostmpc-0.8.1]#./configure--with-gmp-include=/usr/local/include--with-gmp-lib=/usr/local/lib
- [root@localhostmpc-0.8.1]#make&&makeinstall
都是安装在默认位置/usr/local/include和/usr/local/lib,为了防止GCC编译时找不到这三个库,需要确认库位置是否在环境变量LD_LIBRARY_PATH中,
- [root@localhostmpc-0.8.1]#echo$LD_LIBRARY_PATH
- [root@localhostmpc-0.8.1]#vim/etc/profile
- exportLD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib64
- [root@localhostmpc-0.8.1]#source!$
- source/etc/profile
- [root@localhostmpc-0.8.1]#echo$LD_LIBRARY_PATH
- :/usr/local/lib64
- [root@localhostmpc-0.8.1]#
/usr/lib64/libstdc++.so.6: version `GLIBCXX_3.4.15' not found
缺少GLIBCXX_3.4.15版本,或是更高的版本。
- [root@localhostmpc-0.8.1]#strings/usr/lib64/libstdc++.so.6|grepGLIBCXX
- GLIBCXX_3.4
- GLIBCXX_3.4.1
- GLIBCXX_3.4.2
- GLIBCXX_3.4.3
- GLIBCXX_3.4.4
- GLIBCXX_3.4.5
- GLIBCXX_3.4.6
- GLIBCXX_3.4.7
- GLIBCXX_3.4.8
- GLIBCXX_3.4.9
- GLIBCXX_3.4.10
- GLIBCXX_3.4.11
- GLIBCXX_3.4.12
- GLIBCXX_3.4.13
- GLIBCXX_FORCE_NEW
- GLIBCXX_DEBUG_MESSAGE_LENGTH
- [root@localhostlib64]#ll/usr/lib64/libstdc++.so.6
- lrwxrwxrwx1rootroot19Jul2113:38/usr/lib64/libstdc++.so.6->libstdc++.so.6.0.13
- [root@localhostlib64]#strings/usr/local/lib64/libstdc++.so.6.0.20|grep-iGLIBCXX
- GLIBCXX_3.4
- GLIBCXX_3.4.1
- GLIBCXX_3.4.2
- GLIBCXX_3.4.3
- GLIBCXX_3.4.4
- GLIBCXX_3.4.5
- GLIBCXX_3.4.6
- GLIBCXX_3.4.7
- GLIBCXX_3.4.8
- GLIBCXX_3.4.9
- GLIBCXX_3.4.10
- GLIBCXX_3.4.11
- GLIBCXX_3.4.12
- GLIBCXX_3.4.13
- GLIBCXX_3.4.14
- GLIBCXX_3.4.15
- GLIBCXX_3.4.16
- GLIBCXX_3.4.17
- GLIBCXX_3.4.18
- GLIBCXX_3.4.19
- GLIBCXX_3.4.20
- GLIBCXX_FORCE_NEW
- GLIBCXX_DEBUG_MESSAGE_LENGTH
- [root@localhost
如果gcc更新到了4.9一般不会出现该报错,如果libstdc++.so.6.0.20有对应版本把这份软链到正确的地方
- [root@localhostlib64]#cp/usr/local/lib64/libstdc++.so.6.0.20/usr/lib64/
- [root@localhostlib64]#rm-rf/usr/lib64/libstdc++.so.6
- [root@localhostlib64]#ln-s/usr/lib64/libstdc++.so.6.0.20/usr/lib64/libstdc++.so.6
- [root@localhostlib64]#strings/usr/lib64/libstdc++.so.6|grepGLIBCXX
- GLIBCXX_3.4
- GLIBCXX_3.4.1
- GLIBCXX_3.4.2
- GLIBCXX_3.4.3
- GLIBCXX_3.4.4
- GLIBCXX_3.4.5
- GLIBCXX_3.4.6
- GLIBCXX_3.4.7
- GLIBCXX_3.4.8
- GLIBCXX_3.4.9
- GLIBCXX_3.4.10
- GLIBCXX_3.4.11
- GLIBCXX_3.4.12
- GLIBCXX_3.4.13
- GLIBCXX_3.4.14
- GLIBCXX_3.4.15
- GLIBCXX_3.4.16
- GLIBCXX_3.4.17
- GLIBCXX_3.4.18
- GLIBCXX_3.4.19
- GLIBCXX_3.4.20
- GLIBCXX_FORCE_NEW
- GLIBCXX_DEBUG_MESSAGE_LENGTH
- [root@localhostlib64]#
如果没有libstdc++.so.6.0.20需要手动安装libstdc++.so.6.0.14或者更高版本,
32位系统:http://ftp.de.debian.org/debian/pool/main/g/gcc-4.7/libstdc++6_4.7.2-5_i386.deb
64位系统:http://ftp.de.debian.org/debian/pool/main/g/gcc-4.7/libstdc++6_4.7.2-5_amd64.deb
- [root@localhostsrc]#wget
- [root@localhostsrc]#ar-xlibstdc++6_4.7.2-5_amd64.deb&&tarxvfdata.tar.gz
- [root@localhostsrc]#cdusr/lib/x86_64-linux-gnu/
- [root@localhostx86_64-linux-gnu]#cplibstdc++.so.6.0.17/usr/lib64/
- [root@localhostx86_64-linux-gnu]#rm-rf/usr/lib64/libstdc++.so.6
- [root@localhostx86_64-linux-gnu]#ln/usr/lib64/libstdc++.so.6.0.17/usr/lib64/libstdc++.so.6
- [root@localhostx86_64-linux-gnu]#strings/usr/lib64/libstdc++.so.6|grepGLIBCXX
- GLIBCXX_3.4
- GLIBCXX_3.4.1
- GLIBCXX_3.4.2
- GLIBCXX_3.4.3
- GLIBCXX_3.4.4
- GLIBCXX_3.4.5
- GLIBCXX_3.4.6
- GLIBCXX_3.4.7
- GLIBCXX_3.4.8
- GLIBCXX_3.4.9
- GLIBCXX_3.4.10
- GLIBCXX_3.4.11
- GLIBCXX_3.4.12
- GLIBCXX_3.4.13
- GLIBCXX_3.4.14
- GLIBCXX_3.4.15
- GLIBCXX_3.4.16
- GLIBCXX_3.4.17
- GLIBCXX_DEBUG_MESSAGE_LENGTH
- [root@localhostx86_64-linux-gnu]#
/usr/lib64/libc.so.6: version `GLIBC_2.14' not found
解决思路同上