PHP Compilations directives

This is a suggestion of compilation directive to use when compiling PHP specifically for the audited code.

The selection made below is based on the extension usage, found in the code (--enable, --with) and also the absence of usage (--disable, --without).

Some local extensions (--pdo-mysql, --with-libmbfl...) are also mentionned for help.

# install 15 extra extensions
#pecl install amqp (https://pecl.php.net/package/amqp)
#pecl install ds (https://pecl.php.net/package/ds)
#pecl install php-ffi (https://github.com/dstogov/php-ffi)
#pecl install igbinary (https://pecl.php.net/package/igbinary)
#pecl install libsodium (https://pecl.php.net/package/libsodium)
#pecl install memcached (https://pecl.php.net/package/memcached)
#pecl install mongodb (https://pecl.php.net/package/mongodb)
#pecl install php-psr (https://github.com/jbboehr/php-psr)
#pecl install redis (https://pecl.php.net/package/redis)
#pecl install suhosin.org (https://suhosin.org/)
#pecl install swoole-src (https://github.com/swoole/swoole-src)
#pecl install uopz (https://github.com/krakjoe/uopz)
#pecl install weakref (https://pecl.php.net/package/weakref)
#pecl install xdebug (https://pecl.php.net/package/xdebug)
#pecl install zookeeper (https://pecl.php.net/package/zookeeper)

;;;;;;;;;;;;;;;;;;;;;;;;
; PHP configure list   ;
;;;;;;;;;;;;;;;;;;;;;;;;

./configure
 --with-amqp
   --with-librabbitmq-dir[=DIR]
 --with-password-argon2
 --with-curl=DIR
 --enable-dba=shared
   --with-dbm=DIR
    --with-ndbm=DIR
    --with-db2=DIR
    --with-db3=DIR
    --with-db4=DIR
    --with-cdb=DIR
    --with-flatfile
    --with-inifile
    --with-qdbm=DIR
    --with-tcadb=DIR
 --enable-ds
 --with-ffi[=DIR]
 --with-gd
   --with-jpeg-dir=DIR
    --with-png-dir=DIR
    --with-xpm-dir=DIR
    --with-vpx-dir=DIR
    --with-freetype-dir=DIR
    --enable-gd-native-ttf
 --with-gmp
 --with-igbinary
 --enable-intl
 --with-ldap[=DIR]
   --with-ldap-sasl[=DIR]
 --with-libsodium[=DIR]
 --enable-mbstring
   --with-libmbfl=DIR
    --enable-mbstr-enc-trans
    --disable-mbregex
 --with-libmemcached-dir=DIR
   --with-zlib-dir=DIR
    --disable-memcached-session
    --enable-memcached-sasl
 --enable-mongodb
   --with-openssl-dir[=DIR]
    --with-system-ciphers
 --with-mysqli
 --enable-opcache
 --with-openssl[=DIR]
 --enable-pcntl
 --enable-pdo
   --with-pdo-odbc
    --with-pdo-mysql
    --with-pdo-pgsql
    --with-pdo-oci
    --with-pdo-firebird
    --with-pdo-dblib
    --with-pdo-cubrid
 --without-pear
 --with-pgsql=[DIR]
 --enable-psr
 --enable-redis
   --disable-redis-session
    --enable-redis-igbinary
 --enable-sysvsem
 --enable-simplexml
 --without-sqlite3
 --enable-suhosin
   --enable-suhosin-experimental
 --with-swoole
   --enable-swoole-debug, --enable-sockets, --enable-ringbuffer, --enable-async-redis, --enable-openssl, --enable-http2, --enable-thread, --enable-hugepage, --enable-swoole, --enable-mysqlnd, --enable-coroutine, --enable-picohttpparser, --enable-timewheel
 --with-uuid=[DIR]
 --enable-weakref
 --with-xdebug
 --with-xmlrpc[=DIR]
 --disable-xmlwriter
 --with-zlib=DIR
 --enable-zookeeper
   --disable-zookeeper-session
    --with-libzookeeper-dir[=DIR]

; For debug purposes
;--enable-dtrace
;--disable-phpdbg

;--enable-zend-signals
;--disable-opcache