Centos7.4 compile and install php8.1

Install dependencies:

yum -y install gcc gcc-c++ glibc automake autoconf libtool make
yum -y install libxslt-devel libjpeg libjpeg-devel libpng libpng-devel 
yum -y install freetype freetype-devel libxml2 libxml2-devel zlib zlib-devel 
yum -y install glibc glibc-devel glib2 bzip2-devel ncurses ncurses-devel 
yum -y install curl curl-devel e2fsprogs e2fsprogs-devel krb5-devel libidn libidn-devel 
yum -y install openssl openssl-devel sqlite-devel libcurl-devel libpng-devel libjpeg-devel 
yum -y install freetype-devel libicu-devel libxslt-devel
yum -y install systemd-devel
yum -y install oniguruma oniguruma-devel
# gmp扩展
yum -y install gmp-devel 

If oniguruma cannot be installed, use:

# 方案一：
yum -y install http://mirror.centos.org/centos-7/7.7.1908/cloud/x86_64/openstack-queens/oniguruma-6.7.0-1.el7.x86_64.rpm
yum -y install http://mirror.centos.org/centos-7/7.7.1908/cloud/x86_64/openstack-queens/oniguruma-devel-6.7.0-1.el7.x86_64.rpm

#方案二：
yum -y install http://down.24kplus.com/linux/oniguruma/oniguruma-6.7.0-1.el7.x86_64.rpm
yum -y install http://down.24kplus.com/linux/oniguruma/oniguruma-devel-6.7.0-1.el7.x86_64.rpm

upgrade cmake

cd /usr/local/src
yum -y install wget
yum remove cmake -y
wget https://cmake.org/files/v3.21/cmake-3.21.0-linux-x86_64.tar.gz
tar zxvf cmake-3.21.0-linux-x86_64.tar.gz
mv cmake-3.21.0-linux-x86_64 /usr/local/cmake

edit and configure

vim /etc/profile.d/cmake.sh 
export CMAKE_HOME=/usr/local/cmake
export PATH=$CMAKE_HOME/bin:$PATH
# 执行
source  /etc/profile.d/cmake.sh 

Install libzip

wget https://libzip.org/download/libzip-1.8.0.tar.gz
tar -zxvf libzip-1.8.0.tar.gz
cd libzip-1.8.0
mkdir build && cd build
cmake ..
make install
export PKG_CONFIG_PATH="/usr/local/lib64/pkgconfig/":$PKG_CONFIG_PATH

Download the php source package, compile and install

groupadd php-fpm
useradd -s /sbin/nologin -g php-fpm -M php-fpm
cd /usr/loca/src
wget https://www.php.net/distributions/php-8.1.3.tar.gz
tar zxvf php-8.1.3.tar.gz

compile parameters

./configure \
--prefix=/usr/local/php8 \
--with-config-file-path=/usr/local/php8 \
--with-config-file-scan-dir=/usr/local/php8/php.d \
--enable-mysqlnd \
--with-mysqli \
--with-pdo-mysql \
--enable-gd \
--with-gmp \
--with-jpeg \
--with-iconv \
--with-zlib \
--with-zip \
--with-openssl \
--enable-xml \
--enable-shmop \
--enable-sysvsem \
--enable-mbregex \
--enable-mbstring \
--enable-ftp \
--enable-pcntl \
--enable-sockets \
--enable-soap \
--without-pear \
--with-gettext \
--enable-session \
--with-curl \
--with-freetype \
--enable-opcache \
--enable-fpm \
--with-fpm-user=php-fpm \
--with-fpm-group=php-fpm \
--with-fpm-systemd \
--disable-fileinfo 

Execute compilation:

make && make install

Configure php.ini

php.ini-development test development environment
php.ini-production production environment

Copy a copy to the specified directory (choose according to your own situation, you can compare the differences between these two files):

cp php.ini-production /usr/local/php8/etc/php.ini

Configure php-fpm:

# 设置目录
mkdir /home/log/
cd /usr/local/php8/etc
cp php-fpm.conf.default php-fpm.conf
vim php-fpm.conf

Set pid and log

error_log = /home/log/php-fpm.log
pid = /home/log/php-fpm.pid

Configure www

cd /usr/local/php8/etc/php-fpm.d
cp www.conf.default www.conf

Use systemctl command to control php-fpm

cd /usr/local/src/php-8.1.3
cp ./sapi/fpm/php-fpm.service  /usr/lib/systemd/system/

managephp-fpm

# 开机启动
systemctl enable php-fpm
# 启动
systemctl start php-fpm
# 查看状态
systemctl status php-fpm
# 停止
systemctl stop php-fpm

Add environment variable:

vim  /etc/profile
# 末尾追加
export PATH=$PATH:'/usr/local/php8/bin/'
# wq 保存退出,执行
source /etc/profile

test:

php -v

question

Why do you need to set a log directory for php-fpm? Doesn't the default work?
In the systemd configuration file of php-fpm (/usr/lib/systemd/system/php-fpm.service),
when ProtectSystem=true, the php-fpm process will mount the /usr and /boot directories in a read-only manner;
when When ProtectSystem=full, the php-fpm process will mount the /usr, /boot and /etc directories in a read-only manner.
Solution:

1. Open the systemd configuration file /usr/lib/systemd/system/php-fpm.service of php-fpm, and change ProtectSystem=true to ProtectSystem=false. This method will cause certain risks to the system and is not recommended for production environments;
2. Modify the php-fpm configuration file php-fpm.conf, and set error_log to a file in a directory other than /usr, /boot, /etc.