mesa-users

mesa-users] Installation Problem: "Function 'isnan' at (1) has no IMPLICIT type"

[Ricky O. <ol...@sa...>]

Hi,

I got the following problem when trying to install MESA:

/home/ricky/mesa_1.1.1/utils
building utils package.

gfortran  -fopenmp -I../public -I../../include -Wunused-value 
-Wuninitialized -Werror -W -fimplicit-none   -O2 -c -ffree-form 
../private/utils_isnan_okay.f
../private/utils_isnan_okay.f:38.29:

         check_for_bad_num = isnan(x) .or. is_inf(x)
                            1
Error: Function 'isnan' at (1) has no IMPLICIT type
make: *** [utils_isnan_okay.o] Error 1

/home/ricky/mesa_1.1.1/utils/make
FAILED

Could anyone please advise as to what the problem is maybe? I installed 
ndiff-2.00 and the latest version of MESA on sourceforge.net (as of 
today 10 Dec. 2009).

Regards,
Enrico

Re: mesa-users] Installation Problem: "Function 'isnan' at (1) has no IMPLICIT type"

[Aaron D. <aar...@gm...>]

Hi Enrico,

You need to edit the file utils/makefile_header:

# step 2) specify whether isnan is supported or not

# pick one of the following options:

UTILS_ISNAN = utils_isnan_okay
#UTILS_ISNAN = utils_isnan_nope

# If you aren't sure, try setting UTILS_ISNAN = utils_isnan_okay
# If this works, great.  Otherwise, the compilation of the
# mesa/utils module will complain when it tries to invoke isnan.
# In case that happens, you can simply change this makefile_header
# to the UTILS_ISNAN = utils_isnan_nope setting and redo the
# ./install command for mesa.

By default, the relevant section looks like the above.  Change the
UTILS_ISNAN line by commenting out the first and uncommenting the second,
like this:


#UTILS_ISNAN = utils_isnan_okay
UTILS_ISNAN = utils_isnan_nope

This should solve your problem; please let us know if it does not.

Aaron