下載gcc環境所需包：（http://vault.centos.org/7.3.1611/os/x86_64/Packages/）
cpp-4.8.5-11.el7.x86_64.rpm
gcc-4.8.5-11.el7.x86_64.rpm
glibc-2.17-157.el7.x86_64.rpm
glibc-common-2.17-157.el7.x86_64.rpm
glibc-devel-2.17-157.el7.x86_64.rpm
glibc-static-2.17-157.el7.x86_64.rpm
glibc-utils-2.17-157.el7.x86_64.rpm
libmpc-1.0.1-3.el7.x86_64.rpm
libmpc-devel-1.0.1-3.el7.x86_64.rpm
libtool-2.4.2-21.el7_2.x86_64.rpm
libtool-ltdl-2.4.2-21.el7_2.x86_64.rpm
libtool-ltdl-devel-2.4.2-21.el7_2.x86_64.rpm
mpfr-3.1.1-4.el7.x86_64.rpm
mpfr-devel-3.1.1-4.el7.x86_64.rpm
安裝：
yum localinstall *.rpm
或者
rpm -ivh *.rpm
檢測安裝結果：
[root@PC-houwenbin ~]# gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.8.5/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto --enable-plugin --enable-initfini-array --disable-libgcj --with-isl=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/isl-install --with-cloog=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/cloog-install --enable-gnu-indirect-function --with-tune=generic --with-arch_32=x86-64 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.8.5 20150623 (Red Hat 4.8.5-11) (GCC)
