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authorNicholas Piggin <npiggin@gmail.com>2016-11-24 03:41:40 +1100
committerMichal Marek <mmarek@suse.com>2016-11-29 15:58:57 +0100
commit9da2f584b54fa4bf0df4db220cd89b6c7e691c6e (patch)
tree1c3d6d0a7af3e5425d203738c91e45caab7f7e80 /scripts
parent7e441fe759b1133ac995a3bbaee5383a016684a8 (diff)
downloadlinux-9da2f584b54fa4bf0df4db220cd89b6c7e691c6e.tar.bz2
kbuild: improve linker compatibility with lib-ksyms.o build
lib-ksyms.o is created by linking an empty input file with a linker script containing the interesting bits. Currently the empty input file is an archive containing nothing, however this causes the gold linker to segfault. I have opened a bug against gold https://sourceware.org/bugzilla/show_bug.cgi?id=20767 However this can be worked around by assembling an empty file to link with instead. The resulting lib-ksyms.o is slightly larger (seemingly due to empty .text, .data, .bss setions added), but final linked output should not be changed. Reported-by: Anton Blanchard <anton@samba.org> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/Makefile.build2
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 9807a8115896..fb6a5ee1edec 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -424,7 +424,7 @@ quiet_cmd_export_list = EXPORTS $@
cmd_export_list = $(OBJDUMP) -h $< | \
sed -ne '/___ksymtab/{s/.*+/$(ref_prefix)/;s/ .*/)/;p}' >$(ksyms-lds);\
rm -f $(dummy-object);\
- $(AR) rcs$(KBUILD_ARFLAGS) $(dummy-object);\
+ echo | $(CC) $(a_flags) -c -o $(dummy-object) -x assembler -;\
$(LD) $(ld_flags) -r -o $@ -T $(ksyms-lds) $(dummy-object);\
rm $(dummy-object) $(ksyms-lds)