[root@web1 ~]# pecl install apc downloading APC-3.1.9.tgz … Starting to download APC-3.1.9.tgz (155,540 bytes) ……………………………done: 155,540 bytes 54 source files, building running: phpize Configuring for: PHP Api Version: 20041225 Zend Module Api No: 20060613 Zend Extension Api No: 220060519 /usr/bin/phpize: /tmp/pear/temp/APC/build/shtool: /bin/sh: bad interpreter: Permission denied Cannot find autoconf. Please check your autoconf installation and the $PHP_AUTOCONF environment variable. Then, rerun this script. ERROR: `phpize\’ failed The problem is caused by the /tmp/ filesystem being mounted noexec, which keeps any programs on /tmp/ from being allowed to be executed, which breaks the install script. To remount /tmp/ as executable, use: [root@web1 ~]# mount -o remount,exec,suid /tmp The it should install correctly. After the install is done, remount the /tmp/ filesystem with the noexec permissions reset. [root@web1 ~]# mount -o remount,noexec,nosuid /tmp
