File makefile.patch of Package ftnchek

Do some dependency changes to allow an one-pass compilation.
Building in parallel does still not work, though.

--- ftnchek/Makefile.in.orig	2020-09-10 10:41:52.009737736 +0200
+++ ftnchek/Makefile.in	2020-09-10 18:34:40.013079708 +0200
@@ -285,7 +285,9 @@ all:	prog manpage
 # N.B. dcl2inc is also a prog but it is made by configure.  A generic
 # copy of it is provided with the distribution also, in case the user
 # doesn't want to or can't use configure.
-prog:	ftnchek$(EXE)
+prog:
+	$(MAKE) fortran.c
+	$(MAKE) ftnchek$(EXE)
 
 # The manpage target is a "clean-ed up" version of the Unix man page,
 # with conditional text, used by developer to create other forms of
@@ -347,6 +349,8 @@ maintainer-clean:	distclean
 	-$(RM) fortran.c
 	-$(RM) *.catman
 
+$(OBJS): fortran.c
+
 ftnchek$(EXE): $(OBJS)
 	$(CC) $(CFLAGS) $(LDFLAGS) -o ftnchek$(EXE) $(OBJS) $(LDLIBS)
 
@@ -359,8 +363,7 @@ ftnchek$(EXE): $(OBJS)
 # since it is part of the keyword.
 # Also concatenate backslash-continued #if lines, which some older
 # compilers don't like.
-# The following copies y.tab.h to tokdefs.h if changed, then aborts make,
-# since dependencies may have changed.
+# The following copies y.tab.h to tokdefs.h if changed.
 fortran.c: fortran.y
 	$(YACC) $(YFLAGS) fortran.y
 	@if test "$(YACC_NAME)" = "bison$(EXE)" ; \
@@ -377,9 +380,8 @@ fortran.c: fortran.y
 	  $(MV) y.tab.c fortran.c ; \
 	fi
 	@if $(CMP) -s y.tab.h tokdefs.h ; then true ; else \
-		echo; echo tokdefs.h changed -- repeat make ; \
+		echo; echo tokdefs.h changed -- copy from y.tab.h ; \
 		$(CP) y.tab.h tokdefs.h; \
-		false ; \
 	fi
 
 # In case tokdefs.h does not exist, make might complain no rule exists
@@ -521,9 +523,8 @@ ftnchek.hlp:	ftnchek.man
 	>ftnchek.hlp
 
 
-# Rebuild average.out when version changes.  (We don't put the
-# dependency on ftnchek to avoid building ftnchek just for docs.)
-average.out: ftnchek.h
+# Rebuild average.out when version changes.
+average.out: $(FTNCHEK) ftnchek.h
 	$(FTNCHEK) -list -symtab average > average.out
 
 # Install program and documentation on system.  Obsolete fcl2vcg script