./swoole_config.h:22:2: error: #error "GCC 4.8 or later required"

Centos下php7安装swoole 扩展的时候，提示的错误。我记得gcc 版本升级过一次到4.8.5，无语。 root@netpc.com.cn swoole-4.3.5]# gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/i686-pc-linux-gnu/4.8.5/lto-wrapper Target: i686-pc-linux-gnu Configured with: ../configure -enable-checking=release -enable-languages=c,c++ -disable-multilib Thread model: posix gcc version 4.8.5 (GCC) [root@netpc.com.cn swoole-4.3.5]# cc -v Using built-in specs. Target: i386-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-libgcj-multifile --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --disable-plugin --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic --host=i386-redhat-linux Thread model: posix gcc version 4.1.2 20080704 (Red Hat 4.1.2-55) 老旧共存啊？！ 先找下到底有多少gcc [root@netpc.com.cn ~]# find / -name 'gcc' /usr/bin/gcc /usr/libexec/gcc /usr/lib/gcc /usr/local/bin/gcc /usr/local/libexec/gcc /usr/local/lib/gcc /usr/local/src/gcc-4.8.5/gcc-build-4.8.5/gcc /usr/local/src/gcc-4.8.5/gcc /usr/local/src/gcc-4.8.5/gcc/testsuite/ada/acats/tests/gc 接着替换下： mv /usr/bin/gcc /usr/bin/gcc4.1.2 ln -s /usr/local/bin/gcc /usr/bin/gcc 搞定