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| author | Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> | 2006-05-01 21:16:05 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-05-02 03:17:45 +0200 |
| commit | 7b12b9137930eb821b68e1bfa11e9de692208620 (patch) | |
| tree | e2bfd312a5f2dd5665f2a834af679148bb1718d3 /arch/um/sys-x86_64 | |
| parent | [PATCH] uml: fix compilation and execution with hardened GCC (diff) | |
| download | linux-7b12b9137930eb821b68e1bfa11e9de692208620.tar.xz linux-7b12b9137930eb821b68e1bfa11e9de692208620.zip | |
[PATCH] uml: cleanup unprofile expression and build infrastructure
*) Rather than duplicate in various buggy ways the application of
CFLAGS_NO_HARDENING and UNPROFILE (which apply to the same files),
centralize it in Makefile.rules. UNPROFILE_OBJS mustn't be listed in
USER_OBJS but are compiled as such.
I've also verified that unprofile didn't work in the current form, because we
set _c_flags directly (using CFLAGS and not USER_CFLAGS, which is wrong),
which is normally used by c_flags, but we also override c_flags for all
USER_OBJS, and there we don't call unprofile.
Instead it only worked for unmap.o, the only one which wasn't a USER_OBJ.
We need to set c_flags (which is not a public Kbuild API) to clear a lot of
compilation flags like -nostdinc which Kbuild forces on everything.
*) Rather than $(CFLAGS_$(notdir $@)), which expands to CFLAGS_anObj.s when
building "anObj.s", use $(CFLAGS_$(*F).o) which always accesses
CFLAGS_anObj.o, like done by Kbuild.
*) Make c_flags apply to all targets having the same basename, rather than
listing .s, .i, .lst and .o, with the use (which I tested) of
$(USER_OBJS:.o=.%): c_flags = ...
and of
- $(obj)/unmap.c: _c_flags = ...
+ $(obj)/unmap.%: _c_flags = ...
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/um/sys-x86_64')
| -rw-r--r-- | arch/um/sys-x86_64/Makefile | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile index 6d3b29c74533..c19794d435d6 100644 --- a/arch/um/sys-x86_64/Makefile +++ b/arch/um/sys-x86_64/Makefile @@ -16,16 +16,16 @@ subarch-obj-$(CONFIG_MODULES) += kernel/module.o ldt-y = ../sys-i386/ldt.o -USER_OBJS := ptrace_user.o sigcontext.o stub_segv.o +USER_OBJS := ptrace_user.o sigcontext.o USER_OBJS += user-offsets.s extra-y += user-offsets.s -CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING) - extra-$(CONFIG_MODE_TT) += unmap.o +UNPROFILE_OBJS := stub_segv.o +CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING) + include arch/um/scripts/Makefile.rules -$(obj)/stub_segv.o $(obj)/unmap.o: \ - _c_flags = $(call unprofile,$(CFLAGS)) +$(obj)/unmap.%: _c_flags = $(call unprofile,$(CFLAGS)) |