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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:

  1. brew isntall mcrypt
  2. install the pecl
  3. sudo pecl install mcrypt -- The error goes here.

What I tried:

  1. Located the mcrypt.h and put manually the file to the several locations (based on the php-config), not work.

  2. Cleaned the brew and reinstall/relink the mcrypt(libmcrypt), not work.

  3. Removed the legacy mcrypt files of the old brew version.

zhangv
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4 Answers4

27

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)"

OderWat
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if you using brew try this :

1.Unistall existing php then Install shivammathur/php

add shivammathur php

brew tap shivammathur/php

change php version with you needed (5.6 or 7.2 or 7.4 or 8.1 or next version)

brew install shivammathur/php/php@7.4

2.Install shivammathur/extensions it s will add extension to php then

brew tap shivammathur/extensions

brew install shivammathur/extensions/mcrypt@7.4

then you install mcrypt with same version as php version

brew install mcrypt@7.4

then restart httpd

brew services restart httpd

Ref :

https://github.com/shivammathur/homebrew-php

https://github.com/shivammathur/homebrew-extensions

Ari Anggoro
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The problem here is the configure command can't find the libmcrypt installed by homebrew

You can

  1. Download the source code of mcrypt-1.0.4, then cd in the folder

  2. run "phpize"

  3. run "./configure --with-mcrypt=/opt/homebrew/Cellar/mcrypt/2.6.8", you can change the path here with your path for homebrew lib

  4. run "make && make install"

  5. add extension=mcrypt.so to your config file

ps: Use php -i | grep "Loaded Configuration File" to locate your php configure file

G Wesley
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in case of an error on macOS use the complete path in php.ini like:

extension="/opt/homebrew/Cellar/php/8.1.9/pecl/20210902/mcrypt.so"
Aboozar Ghaffari
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