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| author | Josh Poimboeuf <jpoimboe@kernel.org> | 2025-09-17 09:03:57 -0700 |
|---|---|---|
| committer | Josh Poimboeuf <jpoimboe@kernel.org> | 2025-10-14 14:50:17 -0700 |
| commit | 0d83da43b1e1c8ce19f2bb10f54a0fdf795364f7 (patch) | |
| tree | 2f2ef8f8f2d52d7e02d0ac32c650d97afc8c2cad /tools/objtool/Makefile | |
| parent | f6b740ef5f4724f95363ac0d664e88d221343fa1 (diff) | |
| download | linux-next-0d83da43b1e1c8ce19f2bb10f54a0fdf795364f7.tar.gz linux-next-0d83da43b1e1c8ce19f2bb10f54a0fdf795364f7.zip | |
objtool/klp: Add --checksum option to generate per-function checksums
In preparation for the objtool klp diff subcommand, add a command-line
option to generate a unique checksum for each function. This will
enable detection of functions which have changed between two versions of
an object file.
Acked-by: Petr Mladek <pmladek@suse.com>
Tested-by: Joe Lawrence <joe.lawrence@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Diffstat (limited to 'tools/objtool/Makefile')
| -rw-r--r-- | tools/objtool/Makefile | 38 |
1 files changed, 24 insertions, 14 deletions
diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile index fc82d47f2b9a..958761c05b7c 100644 --- a/tools/objtool/Makefile +++ b/tools/objtool/Makefile @@ -2,6 +2,27 @@ include ../scripts/Makefile.include include ../scripts/Makefile.arch +ifeq ($(SRCARCH),x86) + BUILD_ORC := y + ARCH_HAS_KLP := y +endif + +ifeq ($(SRCARCH),loongarch) + BUILD_ORC := y +endif + +ifeq ($(ARCH_HAS_KLP),y) + HAVE_XXHASH = $(shell echo "int main() {}" | \ + $(HOSTCC) -xc - -o /dev/null -lxxhash 2> /dev/null && echo y || echo n) + ifeq ($(HAVE_XXHASH),y) + LIBXXHASH_CFLAGS := $(shell $(HOSTPKG_CONFIG) libxxhash --cflags 2>/dev/null) \ + -DBUILD_KLP + LIBXXHASH_LIBS := $(shell $(HOSTPKG_CONFIG) libxxhash --libs 2>/dev/null || echo -lxxhash) + endif +endif + +export BUILD_ORC + ifeq ($(srctree),) srctree := $(patsubst %/,%,$(dir $(CURDIR))) srctree := $(patsubst %/,%,$(dir $(srctree))) @@ -36,10 +57,10 @@ INCLUDES := -I$(srctree)/tools/include \ -I$(srctree)/tools/objtool/arch/$(SRCARCH)/include \ -I$(LIBSUBCMD_OUTPUT)/include -OBJTOOL_CFLAGS := -std=gnu11 -fomit-frame-pointer -O2 -g \ - $(WARNINGS) $(INCLUDES) $(LIBELF_FLAGS) $(HOSTCFLAGS) +OBJTOOL_CFLAGS := -std=gnu11 -fomit-frame-pointer -O2 -g $(WARNINGS) \ + $(INCLUDES) $(LIBELF_FLAGS) $(LIBXXHASH_CFLAGS) $(HOSTCFLAGS) -OBJTOOL_LDFLAGS := $(LIBSUBCMD) $(LIBELF_LIBS) $(HOSTLDFLAGS) +OBJTOOL_LDFLAGS := $(LIBSUBCMD) $(LIBELF_LIBS) $(LIBXXHASH_LIBS) $(HOSTLDFLAGS) # Allow old libelf to be used: elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(HOSTCC) $(OBJTOOL_CFLAGS) -x c -E - 2>/dev/null | grep elf_getshdr) @@ -51,17 +72,6 @@ HOST_OVERRIDES := CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" AWK = awk MKDIR = mkdir -BUILD_ORC := n - -ifeq ($(SRCARCH),x86) - BUILD_ORC := y -endif - -ifeq ($(SRCARCH),loongarch) - BUILD_ORC := y -endif - -export BUILD_ORC export srctree OUTPUT CFLAGS SRCARCH AWK include $(srctree)/tools/build/Makefile.include |