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apache-2.2与新出的apache-2.4安装不同的地方在于，2.4版的已经不自带apr库，所以在安装apache-2.4之前，需要下载apr。
1、下载软件
cd /tmp
wget http://mirrors.axint.net/apache//httpd/httpd-2.4.2.tar.gz
wget http://mirrors.axint.net/apache//apr/apr-1.4.6.tar.gz
wget http://mirrors.axint.net/apache//apr/apr-util-1.4.1.tar.gz
tar xzf httpd-2.4.2.tar.gz
tar xzf apr-1.4.6.tar.gz
tar xzf apr-util-1.4.1.tar.gz
2、移动apr到srclib
mv apr-1.4.6 httpd-2.4.2/srclib/apr
mv apr-util-1.4.1 httpd-2.4.2/srclib/apr-util
3、安装apache-2.4
cd /tmp/httpd-2.4.2
./configure –prefix=/usr/local/apache –enable-so –enable-deflate=shared –enable-ssl=shared –enable-expires=shared –enable-headers=shared –enable-rewrite=shared –enable-static-support –with-included-apr –with-mpm=prefork
make && make install
cp -f build/rpm/httpd.init /etc/init.d/httpd
chmod +x /etc/init.d/httpd
chkconfig –add httpd
chkconfig httpd on
cd /etc
mv httpd httpd_old
ln -s /usr/local/apache/ httpd
cd /usr/sbin/
ln -fs /usr/local/apache/bin/httpd
ln -fs /usr/local/apache/bin/apachectl
cd /var/log
rm -rf httpd/
ln -s /usr/local/apache/logs httpd
