Hello all,
I've been working on a configure.ac file that will tell me if specific
features in the Fortran 90/03/08 standard are available. One of the
simplest extensions is an intrinsic module called iso_fortran_env
which can be included in a fortran program with the use statement.
The test code would look like this,
program test
use iso_fortran_env
write(*,*) 'hello'
end program
I'm new to autoconf but I've worked out that I want to use something like,
AC_LANG([Fortran])
AC_FC_SRCEXT([f90])
AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [use iso_fortran_env],
[write(*,*) 'hello'])],
[action-if-true],
[AC_MSG_FAILURE(im an error message)] )
What I'm trying to figure out is
1) can I have multiple lines in the program using AC_LANG_PROGRAM or
am I restricted to one line statements? I know in C one can use ";"
to indicate a new line, but I'm not sure there is a similar character
in Fortran 90
2) I've seen that there is a separate AC_??? command to include C .h
header files in the program. Is there something similar to include
module .mod files in a Fortran program? or is there a way to somehow
use the prologue argument of the AC_LANG_PROGRAM() command?
Basically, I know the program I'd need to write to test for the
features I want to test for I just don't know how to tell autoconf
about those programs. Any help appreciated.
Thanks,
-Gabe
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