[CMake] setting environment variable for ctest

[Juan E. Sanchez]

Hello,

It appears that when I invoke ctest through cmake, the environment 
variables I export from my bash shell are being ignored:
DYLD_INSERT_LIBRARIES
PATH

Is there a way to tell cmake to pass the user environment all the way 
down to the environment for my tested application.

This is on Mac OS X (El Capitan) with the latest cmake binary download 
3.8.1.

Regards,

Juan