Call the compiler only once per source file. Reduces build time from 0.85 to 0.75 seconds for me. Signed-off-by: Jan Engelhardt <jengelh@xxxxxxx> --- scripts/utils.mk | 4 ++-- src/Makefile | 14 ++------------ 2 files changed, 4 insertions(+), 14 deletions(-) diff --git a/scripts/utils.mk b/scripts/utils.mk index 5f43de1..b8a32a3 100644 --- a/scripts/utils.mk +++ b/scripts/utils.mk @@ -53,12 +53,12 @@ endif do_fpic_compile = \ ($(print_fpic_compile) \ - $(CC) -c $(CPPFLAGS) $(CFLAGS) $(EXT) -fPIC $< -o $@) + $(CC) -MMD -MP -c $(CPPFLAGS) $(CFLAGS) $(EXT) -fPIC $< -o $@) do_compile = \ ($(if $(GENERATE_PIC), $(do_fpic_compile), \ $(print_compile) \ - $(CC) -c $(CPPFLAGS) $(CFLAGS) $(EXT) $< -o $@)) + $(CC) -MMD -MP -c $(CPPFLAGS) $(CFLAGS) $(EXT) $< -o $@)) do_app_build = \ ($(print_app_build) \ diff --git a/src/Makefile b/src/Makefile index 645d518..3cd4263 100644 --- a/src/Makefile +++ b/src/Makefile @@ -48,24 +48,14 @@ sqlhist-lex.c: sqlhist.l sqlhist.tab.c $(bdir)/%.o: %.c $(Q)$(call do_fpic_compile) -$(DEPS): $(bdir)/.%.d: %.c - $(Q)$(CC) -M -MT $(bdir)/$*.o $(CPPFLAGS) $(CFLAGS) $< > $@ - -$(OBJS): $(bdir)/%.o : $(bdir)/.%.d - tracefs-sqlhist.o: sqlhist.tab.h $(OBJS): | $(bdir) -$(DEPS): | $(bdir) clean: - $(Q)$(call do_clean,$(OBJS) .*.d) + $(Q)$(call do_clean,$(OBJS) *.d) -dep_includes := $(wildcard $(DEPS)) - -ifneq ($(dep_includes),) - include $(dep_includes) -endif +-include *.d $(bdir)/tracefs-sqlhist.o tracefs-sqlhist.o: sqlhist.tab.h -- 2.36.1
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