On 06/05/14 08:56, Michal Marek wrote: > On Wed, Jun 04, 2014 at 03:12:33PM +0200, Michal Marek wrote: >> On 2014-06-04 11:43, Michal Marek wrote: >>> On 2014-06-04 11:03, Richard Weinberger wrote: >>>> To reproduce run: >>>> make defconfig ARCH=um O=/mnt/o && make linux ARCH=um O=/mnt/ >>>> >>>> If there is anything in UML which needs fixing, please tell. :-) >>> >>> I'll have a look, thanks for the report. >> >> Findings so far: For some reason, syscalls_32.h is generated in the >> source tree (which is wrong) and syscalls_64.h is not generated at all. >> Looking further. > > Can you try the below patch? The same pattern is used in the rules for > tools/ and tools/% in the main Makefile, need to look into that as well. > But UML should work now. > > Michal > > From d4bc590f8716f7dde6b7bca319097ac30a8cb0b4 Mon Sep 17 00:00:00 2001 > From: Michal Marek <mmarek@xxxxxxx> > Date: Thu, 5 Jun 2014 17:44:44 +0200 > Subject: [PATCH] um: Fix for relative objtree when generating x86 headers > > In an O= build, rely on the generated Makefile to call the main Makefile > properly. When building in the source tree, we do not need to specify > the -C and O= either. This fixes the problem when $(objtree) is a > relative path and the -C changes the directory. > > Reported-by: Richard Weinberger <richard.weinberger@xxxxxxxxx> > Signed-off-by: Michal Marek <mmarek@xxxxxxx> > --- > arch/um/Makefile | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/arch/um/Makefile b/arch/um/Makefile > index 36e658a..e4b1a96 100644 > --- a/arch/um/Makefile > +++ b/arch/um/Makefile > @@ -111,8 +111,7 @@ endef > KBUILD_KCONFIG := $(HOST_DIR)/um/Kconfig > > archheaders: > - $(Q)$(MAKE) -C '$(srctree)' KBUILD_SRC= \ > - ARCH=$(HEADER_ARCH) O='$(objtree)' archheaders > + $(Q)$(MAKE) KBUILD_SRC= ARCH=$(HEADER_ARCH) archheaders > > archprepare: include/generated/user_constants.h > > I still get this build error when building uml for i386: CC arch/x86/um/user-offsets.s ../arch/x86/um/user-offsets.c:14:29: fatal error: asm/syscalls_32.h: No such file or directory compilation terminated. make[2]: *** [arch/x86/um/user-offsets.s] Error 1 -- ~Randy -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
