Passenger installation: PCRE development headers not found on FreeBSD


Checking for PCRE development headers...
Found: no


To solve it add the C_INCLUDE_PATH!


C_INCLUDE_PATH=/usr/local/include/ bundle exec passenger start


(source: https://blog.brasov.cubus.ro/2013/03/solution-for-pcre-devel-lib-errors-on-freebsd-while-trying-to-install-passenger-4-0-0-rc4/)