Hello,
I think this problem is solved, but I can't seem to get it to work.
I'm trying to ink a C++ program with fortran objects, but I get
make[1]: Entering directory `/home/gunney/acbug/li-gcc'
g77 -g -O2 -c -o fortfile.o `test -f '../acb/fortfile.f' || echo '../acb/'`../acb/fortfile.f
rm -f libacb.a
ar cru libacb.a fortfile.o
ranlib libacb.a
source='../acb/cprog.C' object='cprog.o' libtool=no \
depfile='.deps/cprog.Po' tmpdepfile='.deps/cprog.TPo' \
depmode=gcc3 /bin/sh ../acb/depcomp \
g++ -DHAVE_CONFIG_H -I. -I../acb -I. -g -O2 -c -o cprog.o `test -f '../acb/cprog.C' || echo '../acb/'`../acb/cprog.C
g++ -g -O2 -o cprog -L/nfs/apps/gcc/3.3.6/bin/../lib/gcc-lib/i686-pc-linux-gnu/3.3.6 -L/nfs/apps/gcc/3.3.6/bin/../lib/gcc-lib -L/usr/apps/gcc/3.3.6/lib/gcc-lib/i686-pc-linux-gnu/3.3.6 -L/nfs/apps/gcc/3.3.6/bin/../lib/gcc-lib/i686-pc-linux-gnu/3.3.6/../../.. -L/usr/apps/gcc/3.3.6/lib/gcc-lib/i686-pc-linux-gnu/3.3.6/../../.. -lfrtbegin -lg2c -lm -lgcc_s cprog.o libacb.a
/nfs/apps/gcc/3.3.6/bin/../lib/gcc-lib/i686-pc-linux-gnu/3.3.6/../../../libfrtbegin.a(frtbegin.o)(.text+0x32): In function `main':
../../../../gcc-3.3.6/libf2c/libF77/main.c:28: undefined reference to `MAIN__'
collect2: ld returned 1 exit status
I'm not sure why I get this, as I think I am using AC_F77_WRAPPERS,
AC_F77_MAIN and AC_F77_LIBRARY_LDFLAGS properly. But, maybe I'm not.
I've searched the info pages and google but can't find what I'm doing
wrong. I would appreciate some help. My relevant files follow.
Thanks.
more configure.ac Makefile.am fortfile.f cprog.C
::::::::::::::
configure.ac
::::::::::::::
AC_INIT(Makefile.am)
AC_CANONICAL_SYSTEM
AM_INIT_AUTOMAKE( acb, 0.1 )
AM_CONFIG_HEADER(config.h)
AC_PROG_CXX
AC_PROG_F77
AC_PROG_RANLIB
AC_F77_WRAPPERS
AC_F77_MAIN
AC_F77_LIBRARY_LDFLAGS
DISTCHECK_CONFIGURE_FLAGS=$ac_configure_args
AC_SUBST(DISTCHECK_CONFIGURE_FLAGS)
AC_OUTPUT([ Makefile ], [ ], [ ])
::::::::::::::
Makefile.am
::::::::::::::
lib_LIBRARIES = libacb.a
libacb_a_SOURCES = fortfile.f
bin_PROGRAMS = cprog
cprog_SOURCES = cprog.C
cprog_LDADD = libacb.a
cprog_LDFLAGS = $(FLIBS)
EXTRA_DIST = preconf
::::::::::::::
fortfile.f
::::::::::::::
subroutine fortsub(x)
double precision x
c write(*,*) "This is the forsub subroutine."
write(*,*) "forsub subroutine: sqrt(", x, ")=", sqrt(x)
return
end
::::::::::::::
cprog.C
::::::::::::::
#include "config.h"
extern "C" {
void F77_FUNC(fortsub,FORTSUB)( double &x );
}
#ifdef F77_DUMMY_MAIN
# ifdef __cplusplus
extern "C"
# endif
int F77_DUMMY_MAIN() { return 1; }
#endif
int F77_MAIN( int argc, char **argv ) {
double x = 2.0;
F77_FUNC(fortsub,FORTSUB)(x);
return 0;
}
--
Brian T.N. Gunney | Tel: (925) 422-4115
Center for Applied Scientific Computing | Fax: (925) 423-6374
Lawrence Livermore National Laboratory | Lab: (925) 422-1100
Mail Code L-561 | gunneyb@xxxxxxxx
P.O. Box 808 Livermore, CA 94550-0808 |
7000 East Ave., Livermore, CA 94550-9234 | http://www.llnl.gov/CASC
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