dnl ######################################################################dnldnl File:       f77.m4dnldnl Purpose:    Determine the F77 compilers.dnldnl Version:    $Id: f77.m4,v 1.5 2005/04/29 15:24:53 cary Exp $dnldnl Copyright Tech-X Corporation, 2001-2005.  Redistribution alloweddnl provided this copyright statement remains intact.dnldnl ######################################################################dnl ----------------------------------------------------------------------dnl dnl  See README.fortrandnl  Relevant files:dnl   f77.m4, f77flags.m4, f77interop.m4, mpif77.m4dnl   fc.m4, fcflags.m4, fcinterop.m4, mpif90.m4dnldnl Set the variable:  dnl     F77dnldnl     Notes:dnl        o See f77flags.m4 for setting the flags.  The separation is dnl          done to make the configure flags more intuitivednl        0 Note that old versions of automake can screw up distinctiondnl          between FC and F77.  See README.fortrandnldnl ----------------------------------------------------------------------dnl ----------------------------------------------------------------------dnl  allow flags or environment to overwrite variablesdnl ----------------------------------------------------------------------AC_ARG_WITH(F77,[  --with-F77=MyF77   to use MyF77 instead of the default Fortran compiler],F77="$withval")dnl AC_MSG_CHECKING(for F77 compilers )dnl ---------------------------------------------------------------------- if test "$F77" != none; then# If F77 unspecified, try FC  if test -z "$F77" ; then     F77=$FC  fi  # Check whether an absolute path   # echo Finding absp   if test -n "$F77"; then     absp=`echo "$F77" | grep ^/`   fi   # echo absp = $absp   if test -n "$absp"; then     exists=`ls $F77`     if test -z $exists; then       AC_MSG_ERROR($F77 does not exist.)     fi  # Not an absolute path, so must find   else  # Allow additional places to look for F77     AC_ARG_WITH(F77_PATH, [  --with-F77_PATH=<F77 compiler directory>     to set root for f77 installation], F77_PATH="$withval")  # First look in path, then other directories     if test -z "$F77_PATH"; then # Look in user's path first, then system paths, then paths for compilers # that work on more than one platform.  Thus give user the preference, # then the systems (which are ignored on other systems), then the generic       F77_PATH=$PATH:/opt/SUNWspro/bin:/usr/local/intel_fc_80/bin:/usr/local/pgi/linux86/bin:/usr/absoft/bin     fi     # echo     # echo Looking for FC in $FC_PATH  # Look for specified compiler or else any of those supported     if test -n "$F77"; then       F77S=$F77     else       F77S="xlf g77 f77 pgf77 ifort fort77 fort"     fi       AC_PATH_PROGS(F77, $F77S, "", $F77_PATH)    fi      if test -n "$F77"; then     dnl JRC: below not needed as done by AC_PATH_PROGS     dnl AC_MSG_RESULT(... $F77)     AC_SUBST(F77)     F77_BINDIR=`dirname $F77`     echo Using F77 compiler $F77.   else     AC_MSG_WARN(Unable to find f77 in your path.  F77 modules will not compile.)   fi else   F77=""   AC_MSG_WARN(F77 specified as none.  F77 modules will not compile.) fi  if test -z "$F77" ; then   if test -z "$DEFAULT_F77" ; then 	F77="$FC"   else 	F77="$DEFAULT_F77"   fi fi dnl ----------------------------------------------------------------------dnl exportdnl ----------------------------------------------------------------------dnl JRC: below not needed as done by AC_PATH_PROGSdnl AC_MSG_RESULT($F77)AC_SUBST(F77)