"make install" for a bundle on Windows very slow

[Tom Goddard]

If I do "make install" in the vive bundle directory on Windows (vive.cgl.ucsf.edu) it takes about 25 seconds, of which 21 seconds it has not output anything. If I to do makes in fast succession (< 10 seconds apart) then it takes just couple seconds.

I tracked this down to being a cygwin make problem caused by these lines in our Makefile.bundle

ifeq (,$(wildcard /app))
CHIMERAX_APP = $(wildcard $(TOP)/ChimeraX*.app)
else
CHIMERAX_APP = $(wildcard /app)
endif

In fact with cygwin make the following Makefile takes 21 seconds to do a make clean

ifeq (,$(wildcard /app))
endif

clean:
        echo cleaned

I tried updating cygwin and the problem persists.

Not sure why we are testing if /app exists. Also is there an idiom to do that without $(wildcard)? That seems like overkill for checking if a directory exists.

For now I comment out that check for /app and my "make install" being done 100 times a day developing VR code has now saved me an hour!