A：yum -y install gcc

A:
vim /etc/yum.repo.d/XXXX.repo

将第一行的 -$basearch-debug 删除

将第二行的url=后面的内容替换为http://mirrors.163.com/centos/5/os/i386/

enbaled=0换成1

GPG-KEY修改成http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-5

保存退出(wq)

试试yum list看看是否可以使用

A：

将mirrors.163.com的IPv4地址写入到/etc/hosts

[root@localhost ~]# echo `host mirrors.163.com|cut -d' ' -f 4` mirrors.163.com >> /etc/hosts

# yum clean all

# rpm --rebuilddb

# yum update

Q:
重启报错：/usr/local/apache/bin/apachectl restart

httpd: Syntax error on line 152 of /usr/local/apache/conf/httpd.conf: Cannot load modules/libphp5.so into server: /usr/local/apache/modules/libphp5.so: cannot restore segment prot after reloc: Permission denied

A：

起因：SELinux保护模式引起的

1、关闭SELINUX的方法:

编辑/etc/selinux/config，找到这段：

# This file controls the state of SELinux on the system.

# SELINUX= can take one of these three values:

# enforcing - SELinux security policy is enforced.

# permissive - SELinux prints warnings instead of enforcing.

# disabled - SELinux is fully disabled.

SELINUX=enforcing

把 SELINUX=enforcing 注释掉：#SELINUX=enforcing ，然后新加一行为：

SELINUX=disabled

保存，关闭。

编辑/etc/sysconfig/selinux，找到:

# This file controls the state of SELinux on the system.

# SELINUX= can take one of these three values:

# enforcing - SELinux security policy is enforced.

# permissive - SELinux prints warnings instead of enforcing.

# disabled - SELinux is fully disabled.

SELINUX=enforcing

如果SELINUX已经是 SELINUX=disabled，那么就不用改了，否则就把SELINUX=enforcing 注释掉，新加一行：

SELINUX=disabled

保存，退出。重启

如果你碰到其他类似提示：

cannot restore segment prot after reloc: Permission denied

哪应该是SELinux的问题，可以考虑把它关闭。

2、不关闭SELINUX的方法:

# setenforce 0

# chcon -c -v -R -u system_u -r object_r -t textrel_shlib_t /usr/local/apache/modules/libphp5.so

# service httpd restart

# setenforce 1

 实验了一下确实管用apapche启动正常，php正常显示。

A：

cd /lamp/php-5.6.13/ext/gd/

../../scripts/phpize

./configure --prefix=/usr/local/php/ --with-php-config=/usr/local/php/bin/php-config

make

make install

find / -name "gd.so"

/usr/local/php/lib/php/extensions/no-debug-zts-20131226/gd.so

vim /etc/php.ini

extension=/usr/local/php/lib/php/extensions/no-debug-zts-20131226/gd.so