最近PHP爆出漏洞，老高也在升级PHP版本，并加入一些支持，但是遇到这个问题很蛋疼
configure: error: Cannot find imap library (libc-client.a). Please check your c-client installation.
网上搜了各种教程，各种cp都没用，索性我们就自己编译吧！
I. 安装devel库
yum install pam-devel libc-client libc-client-devel -y
如果使用了yum安装了libc-client，那么在以后编译参数--with-imap=/usr/local/php-imap中的路径应该删除，即--with-imap。
如果这样还不能解决，那么就需要手动编译imap2007f了！
II. 手动编译imap2007f
脚本取自 http://forum.directadmin.com/showthread.php?t=45434
在/usr/src目录下运行以下脚本，将会在/usr/local/php-imap目录下生成imap需要的库
#!/bin/sh
# Script for PHP-IMAP installation. 0.1b
# Written by Martynas Bendorius (smtalk)
CWD=`pwd`
OS=`uname`
#Is it a 64-bit OS?
B64=0
B64COUNT=`uname -m | grep -c 64`
if [ "$B64COUNT" -eq 1 ]; then
B64=1
LD_LIBRARY_PATH=/lib64:/usr/lib64:/usr/local/lib64:/lib:/usr/lib:/usr/local/lib
export LD_LIBRARY_PATH
fi
if [ ! -e /usr/include/krb5.h ] && [ -e /etc/redhat-release ]; then
echo "Installing krb5-devel"
yum -y install krb5-devel
fi
VERSION=2007f
PROTOCOL=ftp
URL="${PROTOCOL}://ftp.cac.washington.edu/imap/imap-${VERSION}.tar.Z"
FILENAME=imap-${VERSION}
TARBALL=${FILENAME}.tar.Z
echo "Downloading ${TARBALL}..."
wget -O ${TARBALL} ${URL}
tar xzf ${TARBALL}
cd ${FILENAME}
echo "Installing ${FILENAME}..."
if [ ${OS} = "FreeBSD" ]; then
if [ ${B64} -eq 0 ]; then
make bsf
else
make bsf EXTRACFLAGS=-fPIC
fi
else
perl -pi -e 's#SSLDIR=/usr/local/ssl#SSLDIR=/etc/pki/tls#' src/osdep/unix/Makefile
perl -pi -e 's#SSLINCLUDE=\$\(SSLDIR\)/include#SSLINCLUDE=/usr/include/openssl#' src/osdep/unix/Makefile
perl -pi -e 's#SSLLIB=\$\(SSLDIR\)/lib#SSLLIB=/usr/lib/openssl#' src/osdep/unix/Makefile
if [ ${B64} -eq 0 ]; then
make slx
else
make slx EXTRACFLAGS=-fPIC
fi
fi
echo "Copying files to /usr/local/php-imap"
mkdir -p /usr/local/php-imap/include
mkdir -p /usr/local/php-imap/lib
chmod -R 077 /usr/local/php-imap
cp -f c-client/*.h /usr/local/php-imap/include/
cp -f c-client/*.c /usr/local/php-imap/lib/
cp -f c-client/c-client.a /usr/local/php-imap/lib/libc-client.a
cd ..
rm -rf ${FILENAME}
if [ -d /usr/lib/x86_64-linux-gnu ] && [ ! -d /usr/kerberos/lib ]; then
mkdir -p /usr/kerberos
ln -s /usr/lib/x86_64-linux-gnu /usr/kerberos/lib
fi
exit 0;
III. 开始编译
下面是编译PHP的参数，如果出现问题，请参考编译PHP5.6 和 PHP编译错误的解决办法。
./configure --prefix=/usr/local/php --with-pdo-pgsql --with-zlib-dir --with-freetype-dir --enable-mbstring --with-libxml-dir=/usr --enable-soap --enable-calendar --with-curl --with-mcrypt --with-zlib --with-gd --with-pgsql --disable-rpath --enable-inline-optimization --with-bz2 --with-zlib --enable-sockets --enable-sysvsem --enable-sysvshm --enable-pcntl --enable-mbregex --enable-exif --enable-bcmath --with-mhash --enable-zip --with-pcre-regex --with-mysql --with-pdo-mysql --with-mysqli --with-jpeg-dir=/usr --with-png-dir=/usr --enable-gd-native-ttf --with-openssl --enable-ftp --with-imap=/usr/local/php-imap --with-imap-ssl --with-kerberos --with-gettext --with-xmlrpc --with-xsl --enable-opcache --enable-fpm --with-fpm-user=www --with-fpm-group=www --disable-fileinfo
IV. 其他问题
在本次编译中，老高又遇到了几个怪事
set --enable-opcache=no
configure: error: Don't know how to define struct flock on this system, set --enable-opcache=no
这个问题还是库文件的链接问题
解决：
echo /usr/local/lib > /etc/ld.so.conf.d/local.conf
ldconfig -v
让编译的PHP支持memcache