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| author | H. Nikolaus Schaller <hns@goldelico.com> | 2021-07-08 10:57:09 +0200 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2021-08-05 20:51:11 +0900 |
| commit | fa953adfad7cf9c7e30d9ea0e4ccfd38cfb5495d (patch) | |
| tree | f428e613bb303896f583a45c6454d3acfac96186 /arch/mips/Makefile | |
| parent | c500bee1c5b2f1d59b1081ac879d73268ab0ff17 (diff) | |
| download | linux-stable-fa953adfad7cf9c7e30d9ea0e4ccfd38cfb5495d.tar.gz linux-stable-fa953adfad7cf9c7e30d9ea0e4ccfd38cfb5495d.tar.bz2 linux-stable-fa953adfad7cf9c7e30d9ea0e4ccfd38cfb5495d.zip | |
x86/tools/relocs: Fix non-POSIX regexp
Trying to run a cross-compiled x86 relocs tool on a BSD based
HOSTCC leads to errors like
VOFFSET arch/x86/boot/compressed/../voffset.h - due to: vmlinux
CC arch/x86/boot/compressed/misc.o - due to: arch/x86/boot/compressed/../voffset.h
OBJCOPY arch/x86/boot/compressed/vmlinux.bin - due to: vmlinux
RELOCS arch/x86/boot/compressed/vmlinux.relocs - due to: vmlinux
empty (sub)expressionarch/x86/boot/compressed/Makefile:118: recipe for target 'arch/x86/boot/compressed/vmlinux.relocs' failed
make[3]: *** [arch/x86/boot/compressed/vmlinux.relocs] Error 1
It turns out that relocs.c uses patterns like
"something(|_end)"
This is not valid syntax or gives undefined results according
to POSIX 9.5.3 ERE Grammar
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html
It seems to be silently accepted by the Linux regexp() implementation
while a BSD host complains.
Such patterns can be replaced by a transformation like
"(|p1|p2)" -> "(p1|p2)?"
Fixes: fd952815307f ("x86-32, relocs: Whitelist more symbols for ld bug workaround")
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'arch/mips/Makefile')
0 files changed, 0 insertions, 0 deletions