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objtool: Set minimum xxhash version to 0.8 

XXH3 is only supported starting with xxhash 0.8.  Enforce that.

Fixes: 0d83da43b1 ("objtool/klp: Add --checksum option to generate per-function checksums")
Closes: https://lore.kernel.org/SN6PR02MB41579B83CD295C9FEE40EED6D4FCA@SN6PR02MB4157.namprd02.prod.outlook.com
Reported-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Link: https://patch.msgid.link/7227c94692a3a51840278744c7af31b4797c6b96.1762990139.git.jpoimboe@kernel.org
This commit is contained in:
Josh Poimboeuf 2025-11-12 15:32:33 -08:00 committed by Peter Zijlstra
parent 9c7dc1dd89
commit ee0b48faba
2 changed files with 2 additions and 2 deletions
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2
tools/objtool/Makefile
View File

@ -12,7 +12,7 @@ ifeq ($(SRCARCH),loongarch)
endif
ifeq ($(ARCH_HAS_KLP),y)
HAVE_XXHASH = $(shell echo "int main() {}" | \
HAVE_XXHASH = $(shell printf "$(pound)include <xxhash.h>\nXXH3_state_t *state;int main() {}" | \
$(HOSTCC) -xc - -o /dev/null -lxxhash 2> /dev/null && echo y || echo n)
ifeq ($(HAVE_XXHASH),y)
BUILD_KLP := y

2
tools/objtool/builtin-check.c
View File

@ -164,7 +164,7 @@ static bool opts_valid(void)
#ifndef BUILD_KLP
if (opts.checksum) {
ERROR("--checksum not supported; install xxhash-devel/libxxhash-dev and recompile");
ERROR("--checksum not supported; install xxhash-devel/libxxhash-dev (version >= 0.8) and recompile");
return false;
}
#endif