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authorMasahiro Yamada <masahiroy@kernel.org>2022-05-29 00:47:04 +0900
committerMasahiro Yamada <masahiroy@kernel.org>2022-06-05 06:20:57 +0900
commitb42d2306502419688190aa6dd4dab4a6def24b3d (patch)
tree89a23a22dc7f90aacedb20c60f53723dd72ea562 /scripts/Makefile.build
parent5d45950dfbb1540bba3e3762a3497de8b4a715d3 (diff)
downloadlinux-b42d2306502419688190aa6dd4dab4a6def24b3d.tar.bz2
kbuild: factor out the common objtool arguments
scripts/Makefile.build and scripts/link-vmlinux.sh have similar setups for the objtool arguments. It was difficult to factor out them because all the vmlinux build rules were written in a shell script. It is somewhat tedious to touch the two files every time a new objtool option is supported. To reduce the code duplication, move the objtool for vmlinux.o into scripts/Makefile.vmlinux_o. Then, move the common macros to Makefile.lib so they are shared between Makefile.build and Makefile.vmlinux_o. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
Diffstat (limited to 'scripts/Makefile.build')
-rw-r--r--scripts/Makefile.build26
1 files changed, 0 insertions, 26 deletions
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 4cb7145071b9..1f01ac65c0cd 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -210,38 +210,12 @@ cmd_record_mcount = $(if $(findstring $(strip $(CC_FLAGS_FTRACE)),$(_c_flags)),
$(sub_cmd_record_mcount))
endif # CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT
-ifdef CONFIG_OBJTOOL
-
-objtool := $(objtree)/tools/objtool/objtool
-
-objtool_args = \
- $(if $(CONFIG_HAVE_JUMP_LABEL_HACK), --hacks=jump_label) \
- $(if $(CONFIG_HAVE_NOINSTR_HACK), --hacks=noinstr) \
- $(if $(CONFIG_X86_KERNEL_IBT), --ibt) \
- $(if $(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL), --mcount) \
- $(if $(CONFIG_UNWINDER_ORC), --orc) \
- $(if $(CONFIG_RETPOLINE), --retpoline) \
- $(if $(CONFIG_SLS), --sls) \
- $(if $(CONFIG_STACK_VALIDATION), --stackval) \
- $(if $(CONFIG_HAVE_STATIC_CALL_INLINE), --static-call) \
- --uaccess \
- $(if $(delay-objtool), --link) \
- $(if $(part-of-module), --module) \
- $(if $(CONFIG_GCOV_KERNEL), --no-unreachable)
-
-cmd_objtool = $(if $(objtool-enabled), ; $(objtool) $(objtool_args) $@)
-cmd_gen_objtooldep = $(if $(objtool-enabled), { echo ; echo '$@: $$(wildcard $(objtool))' ; } >> $(dot-target).cmd)
-
-endif # CONFIG_OBJTOOL
-
# 'OBJECT_FILES_NON_STANDARD := y': skip objtool checking for a directory
# 'OBJECT_FILES_NON_STANDARD_foo.o := 'y': skip objtool checking for a file
# 'OBJECT_FILES_NON_STANDARD_foo.o := 'n': override directory skip for a file
is-standard-object = $(if $(filter-out y%, $(OBJECT_FILES_NON_STANDARD_$(basetarget).o)$(OBJECT_FILES_NON_STANDARD)n),y)
-delay-objtool := $(or $(CONFIG_LTO_CLANG),$(CONFIG_X86_KERNEL_IBT))
-
$(obj)/%.o: objtool-enabled = $(if $(is-standard-object),$(if $(delay-objtool),$(is-single-obj-m),y))
ifdef CONFIG_TRIM_UNUSED_KSYMS