How to install GMP extension for PHP 7.4.2 using MAMP

mamp-php-gmp.md

Installing GMP extension for PHP 7.4 using MAMP

You have to build the GMP extension from the PHP source code. First install Autoconf and GMP using Homebrew.

brew install autoconf gmp

Download and unpack PHP.

http://php.net/get/php-7.4.2.tar.bz2/from/a/mirror

$ cd php-7.4.2/ext/gmp
$ /Applications/MAMP/bin/php/php7.4.2/bin/phpize
$ ./configure --with-php-config=/Applications/MAMP/bin/php/php7.4.2/bin/php-config
$ make
$ make install

Add the extension loading config to php.ini in /Applications/MAMP/bin/php/php7.4.2/conf.

extension=gmp.so

Restart MAMP servers and verify extension is loaded in the phpinfo() report.

Hi @Stichoza , I have tried to compile with this stuff (mac m1) : ./configure --with-php-config=/Applications/MAMP/bin/php/php8.1.13/bin/php-config CXXFLAGS="-I/opt/homebrew/Cellar/gmp/6.2.1_1/include" CPPFLAGS="-I/opt/homebrew/Cellar/gmp/6.2.1_1/include" LDFLAGS="-L/opt/homebrew/Cellar/gmp/6.2.1_1/lib"

Have you tried same for PHP >= 8.2.0? I'm getting the error "GNU MP Library version 4.2 or greater required".

I have tried this but it didn't help.
I got the same error on Mac M1 and i have fixed.
You can try this:

export CPPFLAGS="-I/opt/homebrew/Cellar/gmp/6.3.0/include"
export LDFLAGS="-L/opt/homebrew/Cellar/gmp/6.3.0/lib"
export CXXFLAGS="-I/opt/homebrew/Cellar/gmp/6.3.0/include"
./configure --with-php-config=/Applications/MAMP/bin/php/php7.4.33/bin/php-config

Replace gmp version in brew location and php version.

Ref: https://stackoverflow.com/a/68379616

This worked @tomhapbia, thanks!