* Makeconfig (sysd-rules-patterns): New variable.

* Makerules ($(common-objpfx)sysd-rules): Drive the loop from that.
	(check-inhibit-asm): New canned sequence, replaces ...
	(open-check-inhibit-asm, close-check-inhibit-asm): ... these, removed.
	* elf/rtld-Rules ($(objpfx)rtld-%.os): Use $(rtld-CPPFLAGS) in commands.
	(rtld-CPPFLAGS): Renamed from CPPFLAGS-rtld.
	(CFLAGS-rtld): Variable removed.

ChangeLog

@@ -1,3 +1,13 @@
+2008-01-29  Roland McGrath  <roland@redhat.com>
+
+	* Makeconfig (sysd-rules-patterns): New variable.
+	* Makerules ($(common-objpfx)sysd-rules): Drive the loop from that.
+	(check-inhibit-asm): New canned sequence, replaces ...
+	(open-check-inhibit-asm, close-check-inhibit-asm): ... these, removed.
+	* elf/rtld-Rules ($(objpfx)rtld-%.os): Use $(rtld-CPPFLAGS) in commands.
+	(rtld-CPPFLAGS): Renamed from CPPFLAGS-rtld.
+	(CFLAGS-rtld): Variable removed.
+
 2008-01-24  Roland McGrath  <roland@redhat.com>
 
 	* configure.in: Let configure fragments set base_os.

Makeconfig

@@ -1,4 +1,5 @@
-# Copyright (C) 1991-2003,2004,2005,2006,2007 Free Software Foundation, Inc.
+# Copyright (C) 1991-2003,2004,2005,2006,2007,2008
+#	Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
@@ -931,6 +932,12 @@ $(common-objpfx)sysd-sorted: $(..)scripts/gen-sorted.awk \
 $(all-Depend-files): ;
 endif
 
+# This gives partial TARGET:SOURCE pattern pairs to have rules
+# emitted into sysd-rules.  A sysdeps Makeconfig fragment can
+# add its own special object file prefix to this list with e.g. foo-%:%
+# to have foo-*.? compiled from *.? using $(foo-CPPFLAGS).
+sysd-rules-patterns := %:% rtld-%:% m_%:s_%
+
 # Let sysdeps/ subdirs contain a Makeconfig fragment for us to include here.
 sysdep-makeconfigs := $(wildcard $(+sysdep_dirs:=/Makeconfig))
 ifneq (,$(sysdep-makeconfigs))

Makerules

@@ -1,4 +1,4 @@
-# Copyright (C) 1991-2006, 2007 Free Software Foundation, Inc.
+# Copyright (C) 1991-2006, 2007, 2008 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
@@ -207,10 +207,9 @@ endif
 # patterns matching sysdep directories whose assembly source files should
 # be suppressed.
 ifdef inhibit-sysdep-asm
-define open-check-inhibit-asm
+define check-inhibit-asm
-case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) : ;; *)
+case $$sysdir in $(subst $(empty) ,|,$(inhibit-sysdep-asm))) asm= ;; esac;
 endef
-close-check-inhibit-asm = ;; esac ;
 endif
 
 -include $(common-objpfx)sysd-rules
@@ -229,36 +228,22 @@ $(common-objpfx)sysd-rules: $(common-objpfx)config.make $(..)Makerules \
 	   /*) ;;							      \
 	   *) dir="\$$(..)$$dir" ;;					      \
 	   esac;							      \
-	   for o in $(all-object-suffixes); do \
+	   asm='.S .s';							      \
-	     $(open-check-inhibit-asm) \
+	   $(check-inhibit-asm)						      \
-	     echo "\$$(objpfx)%$$o: $$dir/%.S \$$(before-compile); \
+	   for o in $(all-object-suffixes); do				      \
-		  \$$(compile-command.S)";				      \
+	     set $(subst :, ,$(sysd-rules-patterns));			      \
-	     echo "\$$(objpfx)%$$o: $$dir/%.s \$$(before-compile); \
+	     while [ $$# -ge 2 ]; do					      \
-		  \$$(compile-command.s)";			              \
+	       t=$$1; shift; 						      \
-	     echo "\$$(objpfx)rtld-%$$o: $$dir/%.S \$$(before-compile); \
+	       d=$$1; shift;						      \
-		  \$$(compile-command.S)";				      \
+	       v=$${t%%%}; [ x"$$v" = x ] || v="\$$($${v}CPPFLAGS)";	      \
-	     echo "\$$(objpfx)rtld-%$$o: $$dir/%.s \$$(before-compile); \
+	       for s in $$asm .c; do					      \
-		  \$$(compile-command.s)";			              \
+		 echo "\$$(objpfx)$$t$$o: $$dir/$$d$$s \$$(before-compile)";  \
-	     echo "\$$(objpfx)ptw-%$$o: $$dir/%.S \$$(before-compile); \
+		 echo "	\$$(compile-command$$s) $$v";			      \
-		  \$$(compile-command.S) -DPTW";			      \
+	       done;							      \
-	     echo "\$$(objpfx)ptw-%$$o: $$dir/%.s \$$(before-compile); \
+	     done;							      \
-		  \$$(compile-command.s) -DPTW";		              \
+	   done;							      \
-	     echo "\$$(objpfx)m_%$$o: $$dir/s_%.S \$$(before-compile); \
+	   echo "\$$(inst_includedir)/%.h: $$dir/%.h \$$(+force)";	      \
-		  \$$(compile-command.S)";				      \
+	   echo "	\$$(do-install)"; 				      \
-	     echo "\$$(objpfx)m_%$$o: $$dir/s_%.s \$$(before-compile); \
-		  \$$(compile-command.s)";			              \
-	     $(close-check-inhibit-asm)	\
-	     echo "\$$(objpfx)%$$o: $$dir/%.c \$$(before-compile); \
-		  \$$(compile-command.c)";				      \
-	     echo "\$$(objpfx)rtld-%$$o: $$dir/%.c \$$(before-compile); \
-		  \$$(compile-command.c)";				      \
-	     echo "\$$(objpfx)ptw-%$$o: $$dir/%.c \$$(before-compile); \
-		  \$$(compile-command.c) -DPTW";			      \
-	     echo "\$$(objpfx)m_%$$o: $$dir/s_%.c \$$(before-compile); \
-		  \$$(compile-command.c)";				      \
-	   done; \
-	   echo "\$$(inst_includedir)/%.h: $$dir/%.h \$$(+force); \
-	   	 	\$$(do-install)"; 				      \
 	 done;								      \
 	 echo 'sysd-rules-done = t') > $@T
 	mv -f $@T $@

elf/rtld-Rules

@@ -1,6 +1,6 @@
 # Subroutine makefile for compiling libc modules linked into dynamic linker.
 
-# Copyright (C) 2002, 2003, 2005, 2006 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2005, 2006, 2008 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
@@ -93,9 +93,12 @@ else
 # These are the basic compilation rules corresponding to the Makerules ones.
 # The sysd-rules generated makefile already defines pattern rules for rtld-%
 # targets built from sysdeps source files.
-$(objpfx)rtld-%.os: %.S $(before-compile); $(compile-command.S)
+$(objpfx)rtld-%.os: %.S $(before-compile)
-$(objpfx)rtld-%.os: %.s $(before-compile); $(compile-command.s)
+	$(compile-command.S) $(rtld-CPPFLAGS)
-$(objpfx)rtld-%.os: %.c $(before-compile); $(compile-command.c)
+$(objpfx)rtld-%.os: %.s $(before-compile)
+	$(compile-command.s) $(rtld-CPPFLAGS)
+$(objpfx)rtld-%.os: %.c $(before-compile)
+	$(compile-command.c) $(rtld-CPPFLAGS)
 
 # The rules for generated source files.
 $(objpfx)rtld-%.os: $(objpfx)%.S $(before-compile); $(compile-command.S)
@@ -118,16 +121,7 @@ ifdef rtld-depfiles
 -include $(rtld-depfiles)
 endif
 
-# Just in case we wind up e.g. regenerating dependencies for non-rtld objects,
-# we don't unconditionally modify the flags.  For rtld-% targets, use the
-# special flags set below.
-CFLAGS   += $(if $(filter rtld-%,$(@F)),$(CFLAGS-rtld))
-CPPFLAGS += $(if $(filter rtld-%,$(@F)),$(CPPFLAGS-rtld))
-
-
 # This here is the whole point of all the shenanigans.
-CPPFLAGS-rtld := -DNOT_IN_libc=1 -DIS_IN_rtld=1
+rtld-CPPFLAGS := -DNOT_IN_libc=1 -DIS_IN_rtld=1
-CFLAGS-rtld := # blah
-
 
 endif

nptl/ChangeLog

@@ -1,3 +1,7 @@
+2008-01-29  Roland McGrath  <roland@redhat.com>
+
+	* Makeconfig (ptw-CPPFLAGS, sysd-rules-patterns): New variables.
+
 2008-01-22  Kaz Kojima  <kkojima@rr.iij4u.or.jp>
 
 	* sysdeps/unix/sysv/linux/sh/sem_post.S: Don't overflow value field.

nptl/Makeconfig

@@ -1,4 +1,4 @@
-# Copyright (C) 2002,2003,2005,2006 Free Software Foundation, Inc.
+# Copyright (C) 2002,2003,2005,2006,2008 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 # Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -28,3 +28,7 @@ static-thread-library = $(common-objpfx)nptl/libpthread.a
 bounded-thread-library = $(common-objpfx)nptl/libpthread_b.a
 
 rpath-dirs += nptl
+
+# This makes for ptw-*.? object rules in sysd-rules.
+ptw-CPPFLAGS := -DPTW
+sysd-rules-patterns += ptw-%:%