diff options
| -rw-r--r-- | Makerules | 86 |
1 files changed, 26 insertions, 60 deletions
diff --git a/Makerules b/Makerules index d855ae344c..a9c21d688e 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 |