Better error output

fortran_dependencies.mk

@@ -69,7 +69,7 @@ ifneq ($(call is_clean),1)
 include $(_f90_depfile)
 endif
 $(_f90_depfile): $(top_srcdir)/fdep/fortran_dependencies.pl $(foreach p,$(_f90_targets),$(_$p_use_mods) $(_$p_def_mods)) | $(foreach p,$(_f90_targets),$(_f90_depdir)/$p)
-	$(call _f90_verbose,F90 DEPS $@)echo > $@; $(foreach p,$(_f90_targets),$(top_srcdir)/fdep/fortran_dependencies.pl $(_$p_use_mods) $(_$p_def_mods) >> $@; )
+	$(call _f90_verbose,F90 DEPS $@)echo > $@; $(foreach p,$(_f90_targets),$(top_srcdir)/fdep/fortran_dependencies.pl $p $(_$p_use_mods) $(_$p_def_mods) >> $@; )
 
 $(_f90_depdir):
 	@mkdir $@

fortran_dependencies.pl

@@ -39,10 +39,15 @@ sub add_def {
 	}
 }
 
+my $target = shift;
+
 foreach my $file (@ARGV) {
 	my $re;
 	my $add;
 	my $object;
+	if (defined($ENV{V}) && $ENV{V} ge "2") {
+		print STDERR "fdep: Considering file $file for target $target\n";
+	}
 	if ($file =~ /^(.*)\.def_mods(\..*)$/) {
 		$re = $def_re;
 		$add = \&add_def;
@@ -61,7 +66,7 @@ foreach my $file (@ARGV) {
 		if ($_ =~ $re) {
 			&$add($object, $1);
 		} else {
-			die "Cannot parse module statement '$_', was expecting $re";
+			die "At $file:$.\nCannot parse module statement '$_', was expecting $re";
 		}
 	}
 	close(FILE)
@@ -71,8 +76,8 @@ foreach my $object (sort keys %uses) {
 	for my $m (keys %{$uses{$object}}) {
 		if (defined $defs{$m}) {
 			print "$object: ", $defs{$m}, "\n";
-		} elsif (defined($ENV{V}) && $ENV{V} eq "1") {
-			print STDERR "Warning: Cannot find definition of module $m in files for current program, might be external\n";
+		} elsif (defined($ENV{V}) && $ENV{V} ge "1") {
+			print STDERR "Warning: Cannot find definition of module $m in files for current target $target, might be external\n";
 		}
 	}
 }