FFLAGS & FCFLAGS

[Alfred G. de Wijn]

Hi!

While generalizing some code from FFTW to check for compiler flags  
from C to Fortran, I ran into an issue with autoconf.  It seems that  
ac_test_FCFLAGS and ac_save_FCFLAGS are never set because in  
fortran.m4 it is hardcoded as:

ac_test_FFLAGS=${[]_AC_LANG_PREFIX[]FLAGS+set}
and
ac_save_FFLAGS=$[]_AC_LANG_PREFIX[]FLAGS

Changing these to

ac_test_[]_AC_LANG_PREFIX[]FLAGS=${[]_AC_LANG_PREFIX[]FLAGS+set}
and
ac_save_[]_AC_LANG_PREFIX[]FLAGS=$[]_AC_LANG_PREFIX[]FLAGS

fixes this behavior.  There are 2 of the former, 4 of the latter.  A  
patch is attached, as is testsuite.log.  With a bit more time, I can  
probably provide a test as suggested in README-hacking, too.

Cheers,
Alfred
--
Alfred G. de Wijn (address@hidden)
web: http://www.iluvatar.eu.org/~dwijn

fortran.diff
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testsuite.log
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