From 549b77a94579c47f10e0f78c8206c11011ee8d66 Mon Sep 17 00:00:00 2001
From: David Edelsohn <dje.gcc@gmail.com>
Date: Fri, 21 Jul 1995 23:31:44 +0000
Subject: [PATCH] Rewrite so Makefiles do not reference undefined variables.

---
 cfg-ml-pos.in | 101 ++++++++++++++++++++------------------------------
 1 file changed, 41 insertions(+), 60 deletions(-)

diff --git a/cfg-ml-pos.in b/cfg-ml-pos.in
index 232ca24a72f..9955313fec6 100644
--- a/cfg-ml-pos.in
+++ b/cfg-ml-pos.in
@@ -12,8 +12,8 @@ if [ -z "${with_multisubdir}" ]; then
   multisubdir=
 else
   multisubdir="/${with_multisubdir}"
-  # FIXME: following line needs testing in multilevel dir (eg: m68k).
   dotdot=`echo ${multisubdir} | sed -e 's:/[^/]*:../:g'`
+  # TOP is used by newlib and should not be used elsewhere for this purpose.
   sed -e "s:^TOP[ 	]*=[ 	]*\([./]*\)[ 	]*$:TOP = ${dotdot}\1:" \
       -e "s:^MULTITOP[ 	]*=[ 	]*\([./]*\)[ 	]*$:MULTITOP = ${dotdot}\1:" \
 	${Makefile} > Makefile.tem
@@ -22,47 +22,32 @@ else
 fi
 
 # MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile)
-# and lists the subdirectories to recurse into.  MULTISUBDIR is non-empty in
-# each cpu subdirectory's Makefile (eg: newlib/h8300h/Makefile) and is the
-# installed subdirectory name with a trailing '/'.
-# XXX_MULTI is a set of helpers for all, install, etc.
-# Makefile.in is free to override them since these are prepended to the top.
-
-cat > Multi.tem <<EOF
-MULTIDIRS = ${multidirs}
-MULTISUBDIR = ${multisubdir}
-EOF
-cat Multi.tem ${Makefile} > Makefile.tem
-rm -f Multi.tem ${Makefile}
-mv Makefile.tem ${Makefile}
-
-# Add default definitions for all, install, clean, etc.
-# if the Makefile uses them.
+# and lists the subdirectories to recurse into.
+# MULTISUBDIR is non-empty in each cpu subdirectory's Makefile
+# (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with
+# a trailing '/'.
+# MULTIDO is used for targets like all, install, and check where
+# $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed.
+# MULTICLEAN is used for the *clean targets.
 #
-# ??? The variables will be undefined when they're not used
-# (eg: native libiberty) and things will work just fine, but some may argue
-# that's not clean.  We can always revisit this as necessary (probably by
-# defining all the relevant vars as empty and then instead of prepending
-# corrected values we can modify them in place).
-
-if grep ALL_MULTI ${Makefile} >/dev/null 2>/dev/null
-then
-	cat > Multi.tem <<EOF
-ALL_MULTI = all-multi
-INSTALL_MULTI = install-multi
-MOSTLYCLEAN_MULTI = mostlyclean-multi
-CLEAN_MULTI = clean-multi
-DISTCLEAN_MULTI = distclean-multi
-EOF
+# ??? It is possible to merge MULTIDO and MULTICLEAN into one.  They are
+# currently kept separate because we don't want the *clean targets to require
+# the existence of the compiler (which MULTIDO currently requires) and
+# therefore we'd have to record the directory options as well as names
+# (currently we just record the names and use --print-multi-lib to get the
+# options).
 
-	cat Multi.tem ${Makefile} > Makefile.tem
-	rm -f Multi.tem ${Makefile}
-	mv Makefile.tem ${Makefile}
+sed -e "s:^MULTIDIRS[ 	]*=.*$:MULTIDIRS = ${multidirs}:" \
+    -e "s:^MULTISUBDIR[ 	]*=.*$:MULTISUBDIR = ${multisubdir}:" \
+    -e 's:^MULTIDO[ 	]*=.*$:MULTIDO = $(MAKE):' \
+    -e 's:^MULTICLEAN[ 	]*=.*$:MULTICLEAN = $(MAKE):' \
+	${Makefile} > Makefile.tem
+rm -f ${Makefile}
+mv Makefile.tem ${Makefile}
 
-	cat > Multi.tem <<\EOF
+cat > Multi.tem <<\EOF
 
-# FIXME: We use --print-multi-lib but the others don't.  Standardize.
-all-multi:
+multi-do:
 	if [ -z "$(MULTIDIRS)" ]; then \
 	  true; \
 	else \
@@ -81,7 +66,7 @@ all-multi:
 				CXXFLAGS="$(CXXFLAGS) $${flags}" \
 				LIBCFLAGS="$(LIBCFLAGS) $${flags}" \
 				LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \
-				all); then \
+				$(DO)); then \
 		  true; \
 		else \
 		  exit 1; \
@@ -92,28 +77,24 @@ all-multi:
 	  done; \
 	fi
 
-install-multi mostlyclean-multi clean-multi distclean-multi realclean-multi:
-	if [ -n "$(MULTIDIRS)" ]; then \
-	  rootpre=`pwd`/; export rootpre; \
-	  srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \
-	  $(MAKE) DO=`echo $@ | sed -e 's/-multi$$//'` DODIRS="$(MULTIDIRS)" $(FLAGS_TO_PASS) multi_subdir_do; \
-	else true; fi
-
-multi_subdir_do:
-	for i in $(DODIRS); do \
-		if [ -f ./$$i/Makefile ] ; then \
-			if (cd ./$$i; $(MAKE) $(FLAGS_TO_PASS) $(DO)) ; \
-			then true ; \
-			else exit 1 ; \
-			fi ; \
-		else true; \
-		fi ; \
-	done
+multi-clean:
+	if [ -z "$(MULTIDIRS)" ]; then \
+	  true; \
+	else \
+	  for dir in Makefile $(MULTIDIRS); do \
+	    if [ -f ./$$dir/Makefile ]; then \
+	      if (cd ./$$dir; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \
+	      then true; \
+	      else exit 1; \
+	      fi; \
+	    else true; \
+	    fi; \
+	  done; \
+	fi
 EOF
 
-	cat ${Makefile} Multi.tem > Makefile.tem
-	rm -f ${Makefile} Multi.tem
-	mv Makefile.tem ${Makefile}
-fi
+cat ${Makefile} Multi.tem > Makefile.tem
+rm -f ${Makefile} Multi.tem
+mv Makefile.tem ${Makefile}
 
 fi # "${enable_multilib}" = yes
-- 
2.30.2