catkin_add_gtest_build_flags is missing

[trainman419]

http://wiki.ros.org/gtest describes a cmake macro called catkin_add_gtest_build_flags() but it doesn't appear to be present in catkin.

I have a couple of libraries that include shared test functions that use gtest (see ros/ros_comm#1357), and these are currently under-linked on OSX. I'm able to fix them by linking directly against ${GTEST_LIBRARIES} but it seems like it would be better to use the catkin_add_gtest_build_flags() macro for this.

[dirk-thomas]

Such a function does to my knowledge not exist in catkin and has never existed. Looking at the history of the wiki page it seems this was blindly renamed along time ago: http://wiki.ros.org/action/diff/gtest?action=diff&rev1=53&rev2=54

Currently there are only function to create binaries with gtest, e.g. catkin_add_executable_with_gtest. Similar function for libraries could be introduced if that is a common pattern.

[dirk-thomas]

I removed the invalid reference from the wiki page: http://wiki.ros.org/action/diff/gtest?action=diff&rev1=63&rev2=64