centos7 gcc-11 gcc-c++-11 gdb-11 lex(flex) yacc(bsion)環(huán)境搭建
2022-09-06 22:57:54

參考：https://blog.csdn.net/qq_45316173/article/details/122018354

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卸載舊版本

rpm -q gcc?

rpm -e [上一步查到的版本號]

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執(zhí)行上面一條命令可能會報錯，卸載失敗：

error: Failed dependencies:

gcc = 4.4.7-23.el6 is needed by (installed) gcc-c++-4.4.7-23.el6.x86_64
gcc = 4.4.4 is needed by (installed) libtool-2.2.6-15.5.el6.x86_64

說明要卸載的程序已經(jīng)被其他程序依賴

將依賴gcc的程序卸載：

rpm -e gcc-c++-4.4.7-23.el6.x86_64
rpm -e libtool-2.2.6-15.5.el6.x86_64

然后，再次執(zhí)行卸載gcc的命令：

rpm -e [上一步查到的版本號]

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yum -y install centos-release-scl

yum install -y devtoolset-11-gcc devtoolset-11-gcc-c++?devtoolset-11-gdb

scl enable devtoolset-11 bash

which gcc
which cc
which g++
which gdb

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cat >> /etc/profile << EOF
export PATH=$PATH:/opt/rh/devtoolset-11/root/usr/bin
EOF

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source /etc/profile

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yum -y install flex
yum -y install flex-devel
yum -y install bison

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