범용 암호화 기능 lib - http://mcrypt.sourceforge.net

yum install libmcrypt libmcrypt-devel

또는 아래와 같이 소스 컴파일 설치를 이용할 수 있다.
패키지 매니저를 이용할 수 있다면 패키지 매니저(yum...)를 이용하는 것이 좋다.

tar zxvf libmcrypt-2.5.8.tar.gz
./configure --prefix=$HOME/usr/local/libmcrypt
make
make install

$ tar zxvf php-7.1.6.tar.gz
$ cd php-7.1.6

● 기본 옵션
--prefix                : PHP 바이너리가 설치될 경로를 지정.
--with-config-file-path : php.ini 파일이 위치할 곳을 지정 (설치 후, 이 디렉토리에 php.ini 파일을 넣으면 된다)

● Apache Httpd, MySQL 과 연동해주어야 하기 때문에 아래 옵션의 경로에 주의해야 한다.
--with-apxs2      : Part 1/3 에서 설치한 Apache Httpd 설치 디렉토리의 bin/apxs 파일을 지정 (APache eXtenSion)
--with-pcre-dir   : Part 1/3 에서 설치한 PCRE 설치 디렉토리를 지정 (Perl Compatible Regular Expressions)
--with-mysql-sock : Part 2/3 에서 MySql sock 파일로 지정한 파일을 지정
--with-mysqli     : Part 2/3 에서 설치한 MySql 디렉토리의 bin/mysql_config 파일을 지정.

● 기타 라이브러리들은...
패키지 매니저를 통해 설치된 라이브러리들은 일반적으로 /usr 디렉토리에 설치되어 있을 것이다.
라이브러리 경로는 사용하고 있는 OS 의 라이브러리 디렉토리를 지정해 주면 된다.

[apmhost@titan php-7.1.6]$ ./configure \
--prefix=/home/apmhost/usr/local/php \
--with-apxs2=/home/apmhost/usr/local/apache-httpd/bin/apxs \
--with-config-file-path=/home/apmhost/etc \
--with-mysql-sock=/home/apmhost/usr/local/mysql/tmp/mysql.sock \
--with-mysqli=/home/apmhost/usr/local/mysql/bin/mysql_config \
--with-pdo-mysql \
--with-libxml-dir=/usr \
--with-openssl \
--with-pcre-regex \
--with-bz2 \
--with-curl \
--with-gdbm \
--with-db4=/usr \
--with-dbm \
--with-pcre-dir=/home/apmhost/usr/local/pcre \
--with-openssl-dir=/usr \
--with-gd \
--with-jpeg-dir=/usr \
--with-png-dir=/usr \
--with-zlib \
--with-zlib-dir=/usr \
--with-xpm-dir=/usr \
--with-freetype-dir=/usr \
--with-gettext \
--with-gmp \
--with-mhash \
--with-imap \
--with-imap-ssl \
--with-kerberos \
--with-icu-dir=/usr \
--with-ldap \
--with-ldap-sasl \
--with-libmbfl \
--with-onig \
--with-mcrypt \
--with-libedit \
--with-readline \
--with-tidy \
--with-libexpat-dir=/usr \
--with-xmlrpc \
--with-xsl \
--with-pear \
--with-pic \
--with-libdir=lib64 \
--enable-bcmath \
--enable-calendar \
--enable-exif \
--enable-ftp \
--enable-pcntl \
--enable-gd-native-ttf \
--enable-gd-jis-conv \
--enable-intl \
--enable-mbstring \
--enable-shmop \
--enable-sockets \
--enable-sysvmsg \
--enable-sysvsem \
--enable-sysvshm \
--enable-wddx \
--enable-zip \
--enable-mysqlnd \
--enable-dba=shared \
--enable-dom \
--enable-mbregex \
--enable-inline-optimization \
--enable-sigchild \
--enable-soap \
--enable-maintainer-zts \
--enable-opcache=no

configure 옵션에 따라 에러가 계속 발생 할 수 있다.
configure 명령 후 발생하는 에러는 configure option 과 OS 환경마다 다르기 때문에
각자 구글 검색을 통해 해결해야 한다. 아래는 내 환경에서 발생한 에러들이다.
- 필요한 기능이 많아 configure 옵션을 많이 주었다면, 발생하는 에러를 잡는게 상당히 곤혹스러운 작업이 될 것이다.

● configure: error: DBA: Could not find necessary header file(s).

→   yum install gdbm gdbm-devel
    - A GNU set of database routines which use extensible hashing

● If configure fails try --with-webp-dir=
  checking for jpeg_read_header in -ljpeg... yes
  configure: error: png.h not found.

→   yum install libpng libpng-devel
      - A library of functions for manipulating PNG image format files
    yum install libwebp libwebp-devel
      - Library and tools for the WebP graphics format

● If configure fails try --with-webp-dir=
  checking for jpeg_read_header in -ljpeg... yes
  checking for png_write_image in -lpng... yes
  configure: error: xpm.h not found.

→   yum install libXpm libXpm-devel
      - X.Org X11 libXpm runtime library

● checking for GNU MP support... yes
  configure: error: Unable to locate gmp.h

→   yum install gmp gmp-devel
      - A GNU arbitrary precision library

● checking for U8T_DECOMPOSE...
  configure: error: utf8_mime2text() has new signature, but U8T_CANONICAL is missing.
  This should not happen. Check config.log for additional information.

→   yum install libc-client libc-client-devel
      - C-client mail access routines for IMAP and POP protocols

● checking for location of ICU headers and libraries... not found
  configure: error: Unable to detect ICU prefix or /usr/bin/icu-config failed.
  Please verify ICU install prefix and make sure icu-config works.

→   yum install libicu libicu-devel
      - International Components for Unicode - libraries

● checking for specified location of the MySQL UNIX socket... /home/apmhost/usr/local/mysql/tmp/mysql.sock
  checking for mysql_set_server_option in -lmysqlclient_r... no
  configure: error: wrong mysql library version or lib not found. Check config.log for more information.

→   MySQL 설치 디렉토리, /home/apmhost/usr/local/mysql/lib 디렉토리에 아래와 같이 심볼릭 링크를 걸어준다.
-rw-r--r-- 1 apmhost apmhost  21045942 2017-03-18 17:54 libmysqlclient.a
lrwxrwxrwx 1 apmhost apmhost        20 2017-06-15 10:35 libmysqlclient.so -> libmysqlclient.so.20
lrwxrwxrwx 1 apmhost apmhost        24 2017-06-15 17:30 libmysqlclient.so.16 -> libmysqlclient.so.20.3.5
lrwxrwxrwx 1 apmhost apmhost        24 2017-06-15 17:27 libmysqlclient.so.18 -> libmysqlclient.so.20.3.5
lrwxrwxrwx 1 apmhost apmhost        24 2017-06-15 10:35 libmysqlclient.so.20 -> libmysqlclient.so.20.3.5
-rw-r--r-- 1 apmhost apmhost   9711411 2017-03-18 17:54 libmysqlclient.so.20.3.5
lrwxrwxrwx 1 apmhost apmhost        16 2017-06-15 17:37 libmysqlclient_r.a -> libmysqlclient.a
lrwxrwxrwx 1 apmhost apmhost        24 2017-06-15 17:36 libmysqlclient_r.so.16 -> libmysqlclient.so.20.3.5
-rw-r--r-- 1 apmhost apmhost 447294720 2017-03-18 17:45 libmysqld-debug.a
-rw-r--r-- 1 apmhost apmhost 577971050 2017-03-18 17:59 libmysqld.a
-rw-r--r-- 1 apmhost apmhost     41678 2017-03-18 17:50 libmysqlservices.a

● checking for libedit readline replacement... yes
  configure: error: Please reinstall libedit - I cannot find readline.h

→   yum install libedit libedit-devel
      - The NetBSD Editline library

● checking for TIDY support... yes
  configure: error: Cannot find libtidy

→   yum install libtidy libtidy-devel
      - Shared libraries for tidy

● checking for XSL support... yes
  configure: error: xslt-config not found. Please reinstall the libxslt >= 1.1.0 distribution

→   yum install libxslt libxslt-devel
      - Library providing the Gnome XSLT engine

● configure: WARNING: unrecognized options: --with-mysql, --with-regex, --with-vpx-dir, --with-t1lib, --enable-mod-charset
  --with-mysql
    --with-mysql option is no longer supported in PHP7. You need to use mysqli extension for this.
    Change parameter --with-mysql for this value --with-mysqli

[apmhost@titan php-7.1.6]$ make

.....
clicommand.inc
directorytreeiterator.inc
pharcommand.inc
phar.inc

Build complete.
Don't forget to run 'make test'.

[apmhost@titan php-7.1.6]$ make test

.....

=====================================================================
WARNED TEST SUMMARY
---------------------------------------------------------------------
DBA DB4 with persistent connections [ext/dba/tests/dba_db4_018.phpt] (warn: XFAIL section but test passes)
=====================================================================

You may have found a problem in PHP.
This report can be automatically sent to the PHP QA team at
http://qa.php.net/reports and http://news.php.net/php.qa.reports
This gives us a better understanding of PHP's behavior.
If you don't want to send the report immediately you can choose
option "s" to save it.	You can then email it to qa-reports@lists.php.net later.
Do you want to send this report now? [Yns]:

[apmhost@titan php-7.1.6]$ make install
Installing PHP SAPI module:       apache2handler
/home/apmhost/usr/local/apache-httpd/build/instdso.sh SH_LIBTOOL='/home/apmhost/usr/local/apr/build-1/libtool' libphp7.la /home/apmhost/usr/local/apache-httpd/modules
/home/apmhost/usr/local/apr/build-1/libtool --mode=install install libphp7.la /home/apmhost/usr/local/apache-httpd/modules/
libtool: install: install .libs/libphp7.so /home/apmhost/usr/local/apache-httpd/modules/libphp7.so
libtool: install: install .libs/libphp7.lai /home/apmhost/usr/local/apache-httpd/modules/libphp7.la
libtool: install: warning: remember to run `libtool --finish /home/apmhost/tmp/php-7.1.6/libs'
chmod 755 /home/apmhost/usr/local/apache-httpd/modules/libphp7.so
[activating module `php7' in /home/apmhost/usr/local/apache-httpd/conf/httpd.conf]
Installing shared extensions:     /home/apmhost/usr/local/php/lib/php/extensions/no-debug-zts-20160303/
Installing PHP CLI binary:        /home/apmhost/usr/local/php/bin/
Installing PHP CLI man page:      /home/apmhost/usr/local/php/php/man/man1/
Installing phpdbg binary:         /home/apmhost/usr/local/php/bin/
Installing phpdbg man page:       /home/apmhost/usr/local/php/php/man/man1/
Installing PHP CGI binary:        /home/apmhost/usr/local/php/bin/
Installing PHP CGI man page:      /home/apmhost/usr/local/php/php/man/man1/
Installing build environment:     /home/apmhost/usr/local/php/lib/php/build/
Installing header files:          /home/apmhost/usr/local/php/include/php/
Installing helper programs:       /home/apmhost/usr/local/php/bin/
  program: phpize
  program: php-config
Installing man pages:             /home/apmhost/usr/local/php/php/man/man1/
  page: phpize.1
  page: php-config.1
Installing PEAR environment:      /home/apmhost/usr/local/php/lib/php/
[PEAR] Archive_Tar    - installed: 1.4.2
[PEAR] Console_Getopt - installed: 1.4.1
[PEAR] Structures_Graph- installed: 1.1.1
[PEAR] XML_Util       - installed: 1.4.2
[PEAR] PEAR           - installed: 1.10.4
Wrote PEAR system config file at: /home/apmhost/usr/local/php/etc/pear.conf
You may want to add: /home/apmhost/usr/local/php/lib/php to your php.ini include_path
/home/apmhost/tmp/php-7.1.6/build/shtool install -c ext/phar/phar.phar /home/apmhost/usr/local/php/bin
ln -s -f phar.phar /home/apmhost/usr/local/php/bin/phar
Installing PDO headers:           /home/apmhost/usr/local/php/include/php/ext/pdo/
.....

● php 타입 추가
 안에 아래 내용 추가

AddType application/x-httpd-php .php .html
AddType application/x-httpd-phps .phps
AddType application/x-httpd-php3 .php3 .phtml

● configure 시 아래 옵션을 사용했기 때문에
--with-config-file-path=/home/apmhost/etc

/home/apmhost/etc/php.ini 파일로 만들면 된다.
php.ini 파일의 경로는 phpinfo 에서도 확인 할 수 있다.


● 최초 php-7.1.6.tar.gz 파일 압축 해제한 디렉토리로 이동하면 아래 2개 파일이 있다.

php.ini-development
php.ini-production

cp php.ini-production /home/apmhost/etc/php.ini