[gmx-users] configure checking for include directories

[Mark Abraham]

Hi,

I've noticed when using the configure flags --with-fft=xxx or
--with-external-blas/lapack that if the LDFLAGS or CFLAGS don't end up
containing the appropriate -L and -I modifications to the search path,
configure reports no problem, but something appropriate eventually breaks
when you try to make. There may be other such --with-xxx flags that I
haven't noticed the problem with, too.

Can configure be set up to check that when such flags are operational, the
downstream header file dependencies are checked for as well? It is
annoying to start a make, go away because you know it'll take 15 minutes,
and come back to find it died after 1 minute because of something that
really ought to have been checked for already. It'll also save newbies
posting here if configure has already told them what they need to do.

Mark