A menudo no es posible utilizar el instalador pecl.
Esto se puede deber a que se encuentra tras un cortafuegos, o a que
la extensión que trata de instalar no está disponible como paquete compatible
con PECL, como por ejemplo extensiones no liberadas desde el SVN. Si necesita
construir una extensión de este tipo, puede llevar a cabo esta tarea manualmente
utilizando las herramientas de construcción de bajo nivel.
El comando phpize se utiliza para preparar el entorno
de compilación de la extensión de PHP. En el siguiente ejemplo, el fuente de una extensión
se ubica en un directorio llamado extname:
$ cd extname $ phpize $ ./configure $ make # make install
En caso de que la instalación sea correcta, se creará extname.so
y se salvará en el directorio de extensiones
de PHP. Quizá necesite ajustar el fichero php.ini y añadir una línea
extension=extname.so antes de poder usar la extensión.
Si el sistema no contiene el comando phpize, y se están utilizando
paquetes pre-compilados (como RPM), asegúrese de instalar también la
versión de desarrollo apropiada del paquete PHP, dado que a menudo incluyen
el comando phpize con los ficheros de cabeceras necesarios
para construir PHP y sus extensiones.
Ejecute phpize --help para mostrar información de uso adicional.
If you have multiple PHP versions installed, you may be able to specify for which installation you'd like to build by using the --with-php-config option during configuration.
--with-php-config=[Insert path to proper php-config here]
For example (my case):
./configure --with-php-config=/usr/local/php5/bin/php-config5
When compiling an extension for a stack which is 64 bits (for example) and your compiler is configured to compile in 32 bits, you can manually compile your extensions using C flags before your configure.
Example: my system compiler is 32 bits and my stack is 64 bits. To compile my xdebug:
# phpize
# CFLAGS=-m64 CPPFLAGS=-m64 CCASFLAGS=-m64 ./configure --enable-xdebug
# gmake
# file modules/xdebug.so
modules/xdebug.so: ELF 64-bit LSB dynamic lib AMD64 Version 1, dynamically linked, not stripped, no debugging information available
When you have multiple installations of PHP, running phpize from a specific installation will not force the module to be compiled with that installation's include files.
In my case, I had a standard PHP distribution installed, and am evaluating Zend Core / Zend Platform, which installed it's own Apache & PHP in a /usr/local/Zend/.. install path. It was missing the json.so module, so I had to compile my own.
Running Zend Core's phpize, the output indicates that configuration for that module will occur. But when running ./configure, the standard installation's include files are used. The result json.so being compiled against the wrong PHP would not load when Zend Core's php initializes.
The only way I could see to correct the situation was to temporarily change the standard PHP include path to point to the Zend Core's include files. In my case, I made a backup copy of /usr/include/php5 and did a "ln -s /usr/local/Zend/Core/include/php/ /usr/include/php5".
If you failed to run phpize command, then you should install php-devel package. Command line to install the php-devel package using yum is: yum install php-devel.
If you failed to compile the PECL extension, then you should install gcc package. Command line to install the gcc package using yum is: yum install gcc.
In some situations (e.g. on a cPanel server), the built extension will not be placed into the correct extensions directory by the make install process. Use your phpinfo() output to determine what the correct extension_dir path is and move the generated .so file into that directory. The extension=extname.so line in php.ini will then find the extension file correctly.
