On Fri, Mar 17, 2006 at 12:13:30AM +0100, Steven Bosscher wrote:
> Hi,
>
> So this Mandriva guy tells me gfortran can't compile Scilab, and
> he is right! Scilab is a pretty important piece of Fortran that
> many people use, so it is a shame that gfortran can't build it
> right now. But the reason why it can't is not really a Fortran
> problem (at least I haven't found any yet ;-) but a compatibility
> problem with the library wrt. what g77 had (libU77?)...
>
> Scilab uses some kind of C <-> Fortran compatiblity layer where
> they have a getarg.c that calls C2F(getarg), with a line in one
> of the included header files that says "#define C2F(name) name##_".
> The same thing happens with iargc, so the gerarg.o object that
> the linker sees ends up calling getarg_ and iargc_.
>
> This worked Just Fine with g77, and apparently it works with g95
> as well. It does not work with gfortran, because we have instead
> gfortran_getarg_i4 and so on.
>
> I'm looking for suggestions for how to fix this in libgfortran.
> I would fix this in Scilab, except that if gfortran is to be a
> drop-in replacement for g77, then we shouldn't have this kind of
> rather silly compatibilty issues.
It is nothing new. I had to do the same for netcdf.
H.J.
--- netcdf/configure.in.gfortran 2004-12-18 08:32:32.000000000 -0800
+++ netcdf/configure.in 2006-02-05 20:13:56.000000000 -0800
@@ -135,6 +135,16 @@ case "${FC+set}" in
;;
esac
;;
+ dnl Gfortran in gcc 4.x needs -DgFortran.
+ gfortran*)
+ case "${CPPFLAGS}" in
+ *-DgFortran*)
+ ;;
+ *)
+ CPPFLAGS="${CPPFLAGS} -DgFortran"
+ ;;
+ esac
+ ;;
*)
case "$ac_cv_fc_compiler_gnu" in
yes)
--- netcdf/fortran/cfortran.h.gfortran 2004-10-14 15:07:59.000000000 -0700
+++ netcdf/fortran/cfortran.h 2006-02-05 20:24:49.000000000 -0800
@@ -83,7 +83,7 @@ only C calling FORTRAN subroutines will
/* VAX/VMS does not let us \-split long #if lines. */
/* Split #if into 2 because some HP-UX can't handle long #if */
-#if
!(defined(NAGf90Fortran)||defined(f2cFortran)||defined(hpuxFortran)||defined(apolloFortran)||defined(sunFortran)||defined(IBMR2Fortran)||defined(CRAYFortran)||defined(PATHSCALE_COMPILER))
+#if
!(defined(NAGf90Fortran)||defined(f2cFortran)||defined(hpuxFortran)||defined(apolloFortran)||defined(sunFortran)||defined(IBMR2Fortran)||defined(CRAYFortran)||defined(PATHSCALE_COMPILER)||defined(gFortran))
#if
!(defined(mipsFortran)||defined(DECFortran)||defined(vmsFortran)||defined(CONVEXFortran)||defined(PowerStationFortran)||defined(AbsoftUNIXFortran)||defined(AbsoftProFortran)||defined(SXFortran))
/* If no Fortran compiler is given, we choose one for the machines we know.
*/
#if defined(lynx) || defined(VAXUltrix)
@@ -132,7 +132,7 @@ only C calling FORTRAN subroutines will
#endif /* ...Fortran */
/* Split #if into 2 because some HP-UX can't handle long #if */
-#if
!(defined(NAGf90Fortran)||defined(f2cFortran)||defined(hpuxFortran)||defined(apolloFortran)||defined(sunFortran)||defined(IBMR2Fortran)||defined(CRAYFortran)||defined(PATHSCALE_COMPILER))
+#if
!(defined(NAGf90Fortran)||defined(f2cFortran)||defined(hpuxFortran)||defined(apolloFortran)||defined(sunFortran)||defined(IBMR2Fortran)||defined(CRAYFortran)||defined(PATHSCALE_COMPILER)||defined(gFortran))
#if
!(defined(mipsFortran)||defined(DECFortran)||defined(vmsFortran)||defined(CONVEXFortran)||defined(PowerStationFortran)||defined(AbsoftUNIXFortran)||defined(AbsoftProFortran)||defined(SXFortran))
/* If your compiler barfs on ' #error', replace # with the trigraph for #
*/
#error "cfortran.h: Can't find your environment among:\
@@ -170,7 +170,7 @@ only C calling FORTRAN subroutines will
/* Throughout cfortran.h we use: UN = Uppercase Name. LN = Lowercase Name.
*/
-#if defined(f2cFortran) || defined(NAGf90Fortran) || defined(DECFortran) ||
defined(mipsFortran) || defined(apolloFortran) || defined(sunFortran) ||
defined(CONVEXFortran) || defined(SXFortran) || defined(extname) ||
defined(PATHSCALE_COMPILER)
+#if defined(f2cFortran) || defined(NAGf90Fortran) || defined(DECFortran) ||
defined(mipsFortran) || defined(apolloFortran) || defined(sunFortran) ||
defined(CONVEXFortran) || defined(SXFortran) || defined(extname) ||
defined(PATHSCALE_COMPILER) || defined(gFortran)
#define CFC_(UN,LN) _(LN,_) /* Lowercase FORTRAN symbols.
*/
#define orig_fcallsc(UN,LN) CFC_(UN,LN)
#else
