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authorRoland McGrath <roland@gnu.org>2003-05-02 02:20:45 +0000
committerRoland McGrath <roland@gnu.org>2003-05-02 02:20:45 +0000
commitd73f5331ce5370ca5a879229e3842f5de98689cd (patch)
tree248e6bec74f35b991ea7a2177efb3d1b7c6fd833 /Makerules
parent9a7178d611c8a9b2089cbd8288b623ec3e86da3f (diff)
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2003-05-01 Roland McGrath <roland@redhat.com>
* Makerules (compile-mkdep-flags): New variable, pass -MD -MF $@.d. (compile-command.S): Don't use ifndef. Append $(compile-mkdep-flags). (compile-command.s, compile-command.c): Likewise. ($(objpfx)%.d): All such pattern rules removed. ($(+sysdir_pfx)sysd-rules): Don't generate them. ($(common-objpfx)dummy.d): Target removed. (make-dummy-dep): Variable removed. (generate-md5): Likewise. (%.d: %.dt): New pattern rule. (+depfiles): Use $(wildcard) function to get just existing *.d files and .d files for existing *.dt files. (common-clean): Remove all *.d and *.dt files. (before-compile): Add $(objpfx). when it doesn't exist, regardless of $(no_deps). * elf/rtld-Rules ($(objpfx)rtld-%.d): All such pattern rules removed. (rtld-depfiles): Use .os.d instead of .d names. Include existing *.d files and .d files for existing *.dt files. * Makerules ($(common-objpfx)%.make): Protect with [! subdir]. Use -MD, -MT and -MF flags instead of SUNPRO_DEPENDENCIES variable.
Diffstat (limited to 'Makerules')
-rw-r--r--Makerules86
1 files changed, 26 insertions, 60 deletions
diff --git a/Makerules b/Makerules
index d855ae3..a9c21d6 100644
--- a/Makerules
+++ b/Makerules
@@ -144,10 +144,9 @@ vpath %.sym $(sysdirs)
before-compile += $(gen-as-const-headers:%.sym=$(common-objpfx)%.h)
-# When we have no deps pass doing it, then make sure the subdirectory
-# for object files gets created.
-ifdef no_deps
+# Make sure the subdirectory for object files gets created.
ifdef objpfx
+ifeq (,$(wildcard $(objpfx).))
before-compile += $(objpfx).
$(objpfx).:
$(make-target-directory)
@@ -166,20 +165,25 @@ ifdef before-compile
$(before-compile):
endif
+ifndef subdir
# If a makefile needs to do something conditional on something that
# can only be figured out from headers, write a FOO.make.c input
# file that uses cpp contructs and contains @@@ LINE @@@ for each LINE
# to emit in the generated makefile, and use -include $(common-objpfx)FOO.make.
+#
+# We only generate these in the top-level makefile, to avoid any weirdness
+# from subdir-specific makefile tweaks creeping in on an update.
$(common-objpfx)%.make: $(..)%.make.c $(..)Makerules $(before-compile)
rm -f $@T $@.dT
(echo '# Generated from $*.make.c by Makerules.'; \
- SUNPRO_DEPENDENCIES='$@.dT $$(common-objpfx)$*.make' \
$(CC) $(CFLAGS) $(CPPFLAGS) -E $< \
+ -MD -MT '$$(common-objpfx)$*.make' -MF $@.dT \
| sed -n '/@@@/{s/@@@[ ]*\(.*\)@@@/\1/;s/[ ]*$$//p;}'; \
echo 'common-generated += $(@F)'; \
sed $(sed-remove-objpfx) $(sed-remove-dotdot) $@.dT; \
rm -f $@.dT) > $@T
mv -f $@T $@
+endif
ifdef subdir
sed-remove-dotdot := -e 's@ *\.\.\/\([^ \]*\)@ $$(..)\1@g'
@@ -193,15 +197,6 @@ endif
# later directory would be chosen over a .c file in an earlier directory,
# which does not preserve the desired sysdeps ordering behavior.
-# When making the list of .d files to include, we can't know which ones
-# have source in .s files, and thus do not in fact need a .d file.
-# So we must define rules to make .d files for .s files.
-define make-dummy-dep
-$(addprefix ln $(common-objpfx)dummy.d ,$(filter-out $(wildcard $@),$@))
-endef
-$(common-objpfx)dummy.d:
- echo '# .s files cannot contain includes, so they need no deps.' > $@
-
# It matters that this set of rules, for compiling from sources in
# the current directory (the $srcdir/$subdir) come before the
# generated sysdep rules in included from sysd-rules below. When
@@ -212,21 +207,18 @@ $(objpfx)%$o: %.S $(before-compile); $$(compile-command.S)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)
-$(objpfx)%.d: %.S $(before-compile); $(+make-deps)
define o-iterator-doit
$(objpfx)%$o: %.s $(before-compile); $$(compile-command.s)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)
-$(objpfx)%.d: %.s $(common-objpfx)dummy.d; $(make-dummy-dep)
define o-iterator-doit
$(objpfx)%$o: %.c $(before-compile); $$(compile-command.c)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)
-$(objpfx)%.d: %.c $(before-compile); $(+make-deps)
# Omit the objpfx rules when building in the source tree, because
# objpfx is empty and so these rules just override the ones above.
@@ -238,21 +230,18 @@ $(objpfx)%$o: $(objpfx)%.S $(before-compile); $$(compile-command.S)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)
-$(objpfx)%.d: $(objpfx)%.S $(before-compile); $(+make-deps)
define o-iterator-doit
$(objpfx)%$o: $(objpfx)%.s $(before-compile); $$(compile-command.s)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)
-$(objpfx)%.d: $(objpfx)%.s $(common-objpfx)dummy.d; $(make-dummy-dep)
define o-iterator-doit
$(objpfx)%$o: $(objpfx)%.c $(before-compile); $$(compile-command.c)
endef
object-suffixes-left := $(all-object-suffixes)
include $(o-iterator)
-$(objpfx)%.d: $(objpfx)%.c $(before-compile); $(+make-deps)
endif
# System-dependent makefiles can put in `inhibit-sysdep-asm' wildcard
@@ -301,26 +290,6 @@ $(+sysdir_pfx)sysd-rules: $(+sysdir_pfx)config.make $(..)Makerules \
echo "\$$(objpfx)ptw-%$$o: $$dir/%.c \$$(before-compile); \
\$$(compile-command.c)"; \
done; \
- $(open-check-inhibit-asm) \
- echo "\$$(objpfx)%.d: $$dir/%.s \$$(common-objpfx)dummy.d; \
- \$$(make-dummy-dep)"; \
- echo "\$$(objpfx)rtld-%.d: $$dir/%.s \$$(common-objpfx)dummy.d; \
- \$$(make-dummy-dep)"; \
- echo "\$$(objpfx)ptw-%.d: $$dir/%.s \$$(common-objpfx)dummy.d; \
- \$$(make-dummy-dep)"; \
- echo "\$$(objpfx)%.d: $$dir/%.S \$$(before-compile); \
- \$$(+make-deps)"; \
- echo "\$$(objpfx)rtld-%.d: $$dir/%.S \$$(before-compile); \
- \$$(+make-deps)"; \
- echo "\$$(objpfx)ptw-%.d: $$dir/%.S \$$(before-compile); \
- \$$(+make-deps)"; \
- $(close-check-inhibit-asm) \
- echo "\$$(objpfx)%.d: $$dir/%.c \$$(before-compile); \
- \$$(+make-deps)"; \
- echo "\$$(objpfx)rtld-%.d: $$dir/%.c \$$(before-compile); \
- \$$(+make-deps)"; \
- echo "\$$(objpfx)ptw-%.d: $$dir/%.c \$$(before-compile); \
- \$$(+make-deps)"; \
echo "\$$(objpfx)m_%.S: $$dir/s_%.S; \$$(+make-include-of-dep)"; \
echo "\$$(objpfx)m_%.c: $$dir/s_%.c; \$$(+make-include-of-dep)"; \
done; \
@@ -383,16 +352,11 @@ endif # avoid-generated
endif # $(versioning) = yes
endif # sysd-sorted-done
-
-ifndef compile-command.S
-compile-command.S = $(compile.S) $(OUTPUT_OPTION)
-endif
-ifndef compile-command.s
-compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION)
-endif
-ifndef compile-command.c
-compile-command.c = $(compile.c) $(OUTPUT_OPTION)
-endif
+# Generate .dT files as we compile.
+compile-mkdep-flags = -MD -MP -MF $@.dt
+compile-command.S = $(compile.S) $(OUTPUT_OPTION) $(compile-mkdep-flags)
+compile-command.s = $(COMPILE.s) $< $(OUTPUT_OPTION) $(compile-mkdep-flags)
+compile-command.c = $(compile.c) $(OUTPUT_OPTION) $(compile-mkdep-flags)
# GCC can grok options after the file name, and it looks nicer that way.
compile.c = $(CC) $< -c $(CFLAGS) $(CPPFLAGS)
@@ -402,15 +366,6 @@ COMPILE.S = $(CC) -c $(CPPFLAGS) $(S-CPPFLAGS) \
$(ASFLAGS) $(ASFLAGS-$(suffix $@))
COMPILE.s = $(filter-out -pipe,$(CC)) -c $(ASFLAGS)
-# If we want to generate MD5 checksums for the sources do this now.
-ifeq ($(md5),yes)
-generate-md5 = ; rm -f $(@:.d=.md5); \
-$(CC) -E $< $(CFLAGS) $(CPPFLAGS) $($(patsubst .%,%,$(suffix $(<F)))-CPPFLAGS) | \
-sed '/^\#/d;/^[[:space:]]*$$/d' | md5sum > $(@:.d=.md5)
-else
-generate-md5 =
-endif
-
# We need this for the output to go in the right place. It will default to
# empty if make was configured to work with a cc that can't grok -c and -o
# together. You can't compile the C library with such a compiler.
@@ -420,6 +375,7 @@ OUTPUT_OPTION = -o $@
# the dependency run for C sources. But having it for assembly sources can
# get the wrong predefines.
S-CPPFLAGS = -DASSEMBLER $(asm-CPPFLAGS)
+
define +make-deps
$(make-target-directory)
$(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
@@ -428,6 +384,7 @@ $(+mkdep) $< $(if $(filter %.c,$<),$(CFLAGS)) \
$(sed-remove-objpfx) > $(@:.d=.T)
mv -f $(@:.d=.T) $@ $(generate-md5)
endef
+
ifneq (,$(objpfx))
# Continuation lines here are dangerous because they introduce spaces!
define sed-remove-objpfx
@@ -689,6 +646,15 @@ endif
+depfiles := $(addprefix $(objpfx),\
$(filter-out $(addsuffix .d,$(omit-deps)),\
$(+depfiles)))
+all-dt-files := $(foreach o,$(object-suffixes-for-libc),$(+depfiles:.d=$o.dt))
++depfiles := $(patsubst %.dt,%.d,$(wildcard $(all-dt-files))) \
+ $(wildcard $(all-dt-files:.dt=.d))
+
+# This is a funny rule in that it removes its input file.
+%.d: %.dt
+ @sed $(sed-remove-objpfx) $< > $(@:.d=.T) && \
+ mv -f $(@:.d=.T) $@ && \
+ rm -f $<
# Avoid the .h.d files for any .sym files whose .h files don't exist yet.
# They will be generated when they're needed, and trying too early won't work.
@@ -1368,8 +1334,8 @@ endef
# Also remove the dependencies and generated source files.
common-clean: common-mostlyclean
- -rm -f $(addprefix $(objpfx),$(generated)) $(+depfiles)
- -rm -f $(objpfx)rtld-*.d
+ -rm -f $(addprefix $(objpfx),$(generated))
+ -rm -f $(objpfx)*.d $(objpfx)*.dt
-rm -fr $(addprefix $(objpfx),$(generated-dirs))
-rm -f $(addprefix $(common-objpfx),$(common-generated))
-rm -f $(objpfx)distinfo