OS: macOS 11 (big sur)
Homebrew: 2.5.12
PEAR Version: 1.10.12
I just upgraded the php on my mac from php7.1 to php7.4 with homebrew (brew install php@7.4).
Then, when I try to install mcrypt extension, I got the error:
configure: error: mcrypt.h not found. Please reinstall libmcrypt.
ERROR: `/private/tmp/pear/install/mcrypt/configure --with-php-config=/usr/local/homebrew/opt/php@7.4/bin/php-config --with-mcrypt' failed
Here is what I did:
What I tried:
Located the mcrypt.h and put manually the file to the several locations (based on the php-config), not work.
Cleaned the brew and reinstall/relink the mcrypt(libmcrypt), not work.
Removed the legacy mcrypt files of the old brew version.
The problem here is the configure command can't find the libmcrypt installed by homebrew
You can
Download the source code of mcrypt-1.0.4, then cd in the folder
run "phpize"
run "./configure --with-mcrypt=/opt/homebrew/Cellar/mcrypt/2.6.8", you can change the path here with your path for homebrew lib
run "make && make install"
add extension=mcrypt.so to your config file
ps: Use php -i | grep "Loaded Configuration File" to locate your php configure file
I ran into the same problem. So after installing libmcrypt with brew install mcrypt it seems like configure is not able to resolve the path to mcrypt.h automatically. It also does not work to specify the CPPFLAGS or giving the homebrew include path.
But I found a solution that works for me by giving pecl the install location of mcrypt in the Homebrew Cellar. This is what the following code does automatically:
pecl install mcrypt <<<"$(ls -d $(brew --prefix)/Cellar/mcrypt/* | tail -1)"