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fa953adfad
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:
|
||
|---|---|---|
| .. | ||
| .gitignore | ||
| chkobjdump.awk | ||
| gen-insn-attr-x86.awk | ||
| insn_decoder_test.c | ||
| insn_sanity.c | ||
| Makefile | ||
| objdump_reformat.awk | ||
| relocs.c | ||
| relocs.h | ||
| relocs_32.c | ||
| relocs_64.c | ||
| relocs_common.c | ||