facebook/hhvm — pull request #3855 by mb-m (2014-09-26 08:30:52+00:00)
Title: Carry through build options from cmake command line

This makes it possible to carry through build options from the cmake
command-line, by, exporting the environment, eg.:
CMAKE_C_FLAGS="${CFLAGS}" CMAKE_CXX_FLAGS="${CXXFLAGS}" cmake
in a complex build environment.