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authorLinus Torvalds <torvalds@linux-foundation.org>2022-10-10 22:00:45 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-10-10 22:00:45 +0300
commit8afc66e8d43be8edcf442165b70d50dd33091e68 (patch)
tree7e39a0a1f32b0d46acdac06c6ec515402ac9f583 /scripts/Makefile.lib
parent4de65c5830233e7a4adf2e679510089ec4e210c7 (diff)
parent0715fdb03e2c4f5748d245a231e422602ed29f33 (diff)
downloadlinux-8afc66e8d43be8edcf442165b70d50dd33091e68.tar.xz
Merge tag 'kbuild-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada: - Remove potentially incomplete targets when Kbuid is interrupted by SIGINT etc in case GNU Make may miss to do that when stderr is piped to another program. - Rewrite the single target build so it works more correctly. - Fix rpm-pkg builds with V=1. - List top-level subdirectories in ./Kbuild. - Ignore auto-generated __kstrtab_* and __kstrtabns_* symbols in kallsyms. - Avoid two different modules in lib/zstd/ having shared code, which potentially causes building the common code as build-in and modular back-and-forth. - Unify two modpost invocations to optimize the build process. - Remove head-y syntax in favor of linker scripts for placing particular sections in the head of vmlinux. - Bump the minimal GNU Make version to 3.82. - Clean up misc Makefiles and scripts. * tag 'kbuild-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (41 commits) docs: bump minimal GNU Make version to 3.82 ia64: simplify esi object addition in Makefile Revert "kbuild: Check if linker supports the -X option" kbuild: rebuild .vmlinux.export.o when its prerequisite is updated kbuild: move modules.builtin(.modinfo) rules to Makefile.vmlinux_o zstd: Fixing mixed module-builtin objects kallsyms: ignore __kstrtab_* and __kstrtabns_* symbols kallsyms: take the input file instead of reading stdin kallsyms: drop duplicated ignore patterns from kallsyms.c kbuild: reuse mksysmap output for kallsyms mksysmap: update comment about __crc_* kbuild: remove head-y syntax kbuild: use obj-y instead extra-y for objects placed at the head kbuild: hide error checker logs for V=1 builds kbuild: re-run modpost when it is updated kbuild: unify two modpost invocations kbuild: move vmlinux.o rule to the top Makefile kbuild: move .vmlinux.objs rule to Makefile.modpost kbuild: list sub-directories in ./Kbuild Makefile.compiler: replace cc-ifversion with compiler-specific macros ...
Diffstat (limited to 'scripts/Makefile.lib')
-rw-r--r--scripts/Makefile.lib33
1 files changed, 18 insertions, 15 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index c88b98b5dc44..3dd688b7baab 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -90,6 +90,7 @@ always-y += $(dtb-y)
# Add subdir path
+ifneq ($(obj),.)
extra-y := $(addprefix $(obj)/,$(extra-y))
always-y := $(addprefix $(obj)/,$(always-y))
targets := $(addprefix $(obj)/,$(targets))
@@ -101,6 +102,7 @@ multi-obj-m := $(addprefix $(obj)/, $(multi-obj-m))
multi-dtb-y := $(addprefix $(obj)/, $(multi-dtb-y))
real-dtb-y := $(addprefix $(obj)/, $(real-dtb-y))
subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
+endif
# Finds the multi-part object the current object will be linked into.
# If the object belongs to two or more multi-part objects, list them all.
@@ -241,25 +243,26 @@ 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_RETHUNK), --rethunk) \
- $(if $(CONFIG_SLS), --sls) \
- $(if $(CONFIG_STACK_VALIDATION), --stackval) \
- $(if $(CONFIG_HAVE_STATIC_CALL_INLINE), --static-call) \
- $(if $(CONFIG_HAVE_UACCESS_VALIDATION), --uaccess) \
+objtool-args-$(CONFIG_HAVE_JUMP_LABEL_HACK) += --hacks=jump_label
+objtool-args-$(CONFIG_HAVE_NOINSTR_HACK) += --hacks=noinstr
+objtool-args-$(CONFIG_X86_KERNEL_IBT) += --ibt
+objtool-args-$(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL) += --mcount
+objtool-args-$(CONFIG_UNWINDER_ORC) += --orc
+objtool-args-$(CONFIG_RETPOLINE) += --retpoline
+objtool-args-$(CONFIG_RETHUNK) += --rethunk
+objtool-args-$(CONFIG_SLS) += --sls
+objtool-args-$(CONFIG_STACK_VALIDATION) += --stackval
+objtool-args-$(CONFIG_HAVE_STATIC_CALL_INLINE) += --static-call
+objtool-args-$(CONFIG_HAVE_UACCESS_VALIDATION) += --uaccess
+objtool-args-$(CONFIG_GCOV_KERNEL) += --no-unreachable
+
+objtool-args = $(objtool-args-y) \
$(if $(delay-objtool), --link) \
- $(if $(part-of-module), --module) \
- $(if $(CONFIG_GCOV_KERNEL), --no-unreachable)
+ $(if $(part-of-module), --module)
delay-objtool := $(or $(CONFIG_LTO_CLANG),$(CONFIG_X86_KERNEL_IBT))
-cmd_objtool = $(if $(objtool-enabled), ; $(objtool) $(objtool_args) $@)
+cmd_objtool = $(if $(objtool-enabled), ; $(objtool) $(objtool-args) $@)
cmd_gen_objtooldep = $(if $(objtool-enabled), { echo ; echo '$@: $$(wildcard $(objtool))' ; } >> $(dot-target).cmd)
endif # CONFIG_OBJTOOL