I tried to install the mongodb driver for PHP on El Capitan. While running sudo pecl install mongo, I get the error message:
sudo /Applications/XAMPP/xamppfiles/bin/pecl install mongo
fatal error: openssl/evp.h: No such file or directory
#include <openssl/evp.h>
^
compilation terminated.
make: *** [io_stream.lo] Error 1
ERROR: `make' failed
PEAR Version: 1.9.4 PHP Version: 5.5.28
I tried mongo driver install with PHP 5.5.26 also.
I had the same problem. Install this script which installs a clean version of php:
curl -s http://php-osx.liip.ch/install.sh | bash -s 5.6
See this blog post for more info: http://jacurtis.com/easily-install-mcrypt-php-mavericks-yosemite/