[Qemu-devel] Re: [PATCH] Fix multiple qemu-options.def generation

[Paolo Bonzini <pbonzini@redhat.com>]

> diff --git a/Makefile.objs b/Makefile.objs
> index 4a1eaa1..ee9f190 100755
> --- a/Makefile.objs
> +++ b/Makefile.objs
> @@ -269,10 +269,10 @@ vl.o: QEMU_CFLAGS+=$(GPROF_CFLAGS)
>  vl.o: QEMU_CFLAGS+=$(SDL_CFLAGS)
> -vl.o: qemu-options.def
> +vl.o: ../qemu-options.def
> os-posix.o: qemu-options.def
> os-win32.o: qemu-options.def
> -qemu-options.def: $(SRC_PATH)/qemu-options.hx
> +%qemu-options.def: $(SRC_PATH)/qemu-options.hx
>                $(call quiet-command,sh $(SRC_PATH)/hxtool -h < $< > $@,"  GEN   $(TARGET_DIR)$@")

This is wrong, I think the problem is that you are missing a vpath 
directive.

Does this help?

diff --git a/rules.mak b/rules.mak
index ed59c9e..6f753ae 100644
--- a/rules.mak
+++ b/rules.mak
@@ -39,7 +39,7 @@ quiet-command = $(if $(V),$1,$(if $(2),@echo $2 && $1, @$1))
 cc-option = $(if $(shell $(CC) $1 $2 -S -o /dev/null -xc /dev/null \
               >/dev/null 2>&1 && echo OK), $2, $3)
 
-VPATH_SUFFIXES = %.c %.h %.S %.m %.mak %.texi
+VPATH_SUFFIXES = %.c %.h %.S %.m %.mak %.texi %.def
 set-vpath = $(if $1,$(foreach PATTERN,$(VPATH_SUFFIXES),$(eval vpath $(PATTERN) $1)))
 
 # find-in-path

Paolo