Re: fort77(f2c wrapper) is not properly detected

[Giulio Paci]

Il 26/11/2010 23:17, Giulio Paci ha scritto:
>     recently I packaged (using autoconf 2.67 on a Debian squeeze system)
> a program that mixes Fortran and C++ code.
>   
The problem is also present using the git version.
> The configure.ac includes the following macros:
> AC_PROG_F77
> AC_F77_LIBRARY_LDFLAGS
> AC_F77_DUMMY_MAIN
>
> Everything is working fine with gfortran, but the configure script fails
> to detect proper settings for fort77 (the f2c wrapper).
>
> The macro fails to parse the following output (and then fails to detect
> both the -lf2c -lm flags and the MAIN__ function):
>
> $ f77 -v test.f
> /usr/bin/f77: fort77 Version 1.15
> /usr/bin/f77: Running "/usr/bin/f2c -Nn802 -I. < test.f >
> /tmp/fort77-30492-1.c"
>    MAIN main:
> /usr/bin/f77: Running "gcc" "-c" "-o" "test.o" "/tmp/fort77-30492-1.c"
> /usr/bin/f77: unlinking /tmp/fort77-30492-1.c
> /usr/bin/f77: Running "gcc" "test.o" "-lf2c" "-lm"
> /usr/bin/f77: unlinking test.o
>
> $ fort77 -v test.f
> /usr/bin/fort77: fort77 Version 1.15
> /usr/bin/fort77: Running "/usr/bin/f2c -Nn802 -I. < test.f >
> /tmp/fort77-30454-1.c"
>    MAIN main:
> /usr/bin/fort77: Running "gcc" "-c" "-o" "test.o" "/tmp/fort77-30454-1.c"
> /usr/bin/fort77: unlinking /tmp/fort77-30454-1.c
> /usr/bin/fort77: Running "gcc" "test.o" "-lf2c" "-lm"
> /usr/bin/fort77: unlinking test.o
>
> Adding manually the following two lines in the configure script:
>
>   *"Running \"gcc\""*)
>     ac_f77_v_output=`echo "$ac_f77_v_output" | grep "Running \"gcc\"" |
> grep -v '"-c"' | sed 's/^.*Running //' | sed 's/"//g' ` ;;
>
> solves the problem.
> Is it possible to include support for fort77 in the autoconf macros? Is
> there a temporary workaround that I can use in the meantime?
Here is a patch to fix the issue in fortran.m4.
I hope you'll find it useful.

Bests,
    Giulio.

fortran.m4.patch
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