#2428: Possible issue between ExternalLibraries/FFTW3 thorn and the Cactus/lib/sbin/strip-incdirs.sh script

Comment (by Roland Haas):

Are you doing this on a Mac by any chance? In that case see: https://bitbucket.org/einsteintoolkit/tickets/issues/2306/set-up-cpath-and-library_path-in for reasons why “/usr/local” is always stripped and for workarounds for compilers (such as some of the MacPorts and HomeBrew) that do not search in places we expect them to search by setting LIBRARY_PATH and CPATH. There’s also a branch https://bitbucket.org/cactuscode/cactus/branch/rhaas/strip-dirs of the flesh where I try to provide a better solution, but frankly it does not really work either.