Configure cannot find FFTW3 automatically about libmadam HOT 2 CLOSED

Hi there, I believe Reijo saw this on his ubuntu install, but somehow mine worked. The autoconf macro that looks for fortran include files uses a "hack" to try to find include directories to search for. What it does is to parse $LD_LIBRARY_PATH, go up one directory from each entry, and search those directories. Basically the reason for this stuff is that gfortran does not use the $CPATH environment variable to search for include files (unlike gcc / g++ which do).

One solution would be to change the FFTW autoconf macro to look also for the f03 include file- since that is where we have information about the FFTW install prefix. However, since Reijo put all this together, I'll let him solve it however he wants. As you note, a workaround is to always specify the --with-fftw configure option.

from libmadam.

I believe this issue is now obsolete. libmadam compiles fine on my Ubuntu partition against apt-get fftw3.

from libmadam.