On Fri, Aug 2, 2013 at 9:23 AM, Hendrik Greving <hendrik.greving.intel@xxxxxxxxx> wrote: > > I am looking at some build dependencies, my build apparently is > missing a dependency on genflags->insn-flags.h. c-opts.o is compiled > before insn-flags.h was generated. Anybody has an idea why? Also, I am > searching for who is actually calling genflags (I am already > desperately doing a simple 'grep' and haven't found it yet). You neglected to mention what version of GCC you are building and whether you have any local changes. That said, I agree that it looks like in gcc/Makefile.in c-family/c-opts.o is missing a dependency on $(TM_H) and $(TM_P_H), although c-family/c-opts.c #includes both those files. Fixing that in gcc/Makefile.in should fix your problem. If it does, please send in a patch. The file is created by these definitions in gcc/Makefile.in: simple_rtl_generated_h = insn-attr.h insn-attr-common.h insn-codes.h \ insn-config.h insn-flags.h simple_generated_h = $(simple_rtl_generated_h) insn-constants.h $(simple_generated_h): insn-%.h: s-%; @true $(simple_generated_h:insn-%.h=s-%): s-%: build/gen%$(build_exeext) $(RUN_GEN) build/gen$*$(build_exeext) $(md_file) \ $(filter insn-conditions.md,$^) > tmp-$*.h $(SHELL) $(srcdir)/../move-if-change tmp-$*.h insn-$*.h $(STAMP) s-$* This is admittedly hard to follow if you don't know GNU make, but what it boils down to is that insn-flags.h is created by running $(RUN_GEN) build/genflags $(md_file) Ian
