diff options
| -rw-r--r-- | Makerules | 30 |
1 files changed, 20 insertions, 10 deletions
@@ -5,6 +5,12 @@ .SUFFIXES: .c .S .o .os .oS .so .a .s .i PHONY := FORCE + +.PHONY: dummy $(PHONY) \ + all check clean realclean distclean test \ + config dist menuconfig oldconfig release \ + subdirs utils + # order is important, the stripping uses STRIP_FLAGS for lib-so, but not for lib-a ifeq ($(HAVE_SHARED),y) .LIBPATTERNS: "lib%.so" @@ -126,18 +132,28 @@ disp_unifdef = $($(DISP)_disp_unifdef) any-prereq = $(filter-out $(PHONY),$?) $(filter-out $(PHONY) $(wildcard $^),$^) +# ../foo/bar/baz.ext -> foo_bar_baz.ext +variablify = $(subst /,_,$(subst $(top_builddir),,$(1))) +# strip the top_builddir off everything to make the *string* idempotent for -C +dirify = $(subst $(top_builddir),,$(patsubst -L$(top_builddir)%,-L%,$(patsubst -I$(top_builddir)%,-I%,$(1)))) + # True if not identical. Neither order nor whitespace nor identical flags # matter. -compare_flags = $(strip $(filter-out $(cmd_$(1)), $(cmd_$(@))) \ - $(filter-out $(cmd_$(@)), $(cmd_$(1)))) +compare_flags = \ + $(strip $(filter-out $(call dirify,$(cmd_$(call variablify,$(1)))), \ + $(call dirify,$(cmd_$(call variablify,$(@))))) \ + $(filter-out $(call dirify,$(cmd_$(call variablify,$(@)))), \ + $(call dirify,$(cmd_$(call variablify,$(1)))))) # Rebuild if any prerequisite, the used CC or flags changed. # Previously used flags are stored in the corresponding .%.dep files -maybe_exec = $(if $(strip $(compare_flags) $(any-prereq)), \ +maybe_exec = \ + $(if $(strip $(compare_flags) $(any-prereq)), \ @set -e; \ $(disp_$(1)); \ $(cmd_$(1)); \ - echo 'cmd_$@ := $(cmd_$1)' >> $(dir $@).$(notdir $@).dep) + echo 'cmd_$(call variablify,$@) := $(call dirify,$(cmd_$(call variablify,$1)))' >> $(dir $@).$(notdir $@).dep) + CFLAGS_gen.dep = -MT $@ -MD -MP -MF $(dir $@).$(notdir $@).dep @@ -364,7 +380,6 @@ files.dep := $(libc-a-y) $(libc-so-y) $(libc-nonshared-y) \ .depends.dep := $(foreach f,$(.depends.dep),$(dir $(f)).$(notdir $(f))) .depends.dep := $(wildcard $(.depends.dep)) -.PHONY: dummy $(PHONY) FORCE: clean: objclean-y headers_clean-y @@ -374,11 +389,6 @@ realclean: clean objclean-y: $(objclean-y) headers_clean-y: $(headers_clean-y) -.PHONY: \ - all check clean realclean distclean test \ - config dist menuconfig oldconfig release \ - subdirs utils - ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),) ifneq ($(strip $(.depends.dep)),) .NOEXPORT: |