mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
synced 2026-10-29 03:01:39 -04:00
Kbuild updates for v4.17
- add a shell script to get Clang version - improve portability of build scripts - drop always-enabled CONFIG_THIN_ARCHIVE and remove unused code - rename built-in.o which is now thin archive to built-in.a - process clean/build targets one by one to get along with -j option - simplify ld-option - improve building with CONFIG_TRIM_UNUSED_KSYMS - define KBUILD_MODNAME even for objects shared among multiple modules - avoid linking multiple instances of same objects from composite objects - move <linux/compiler_types.h> to c_flags to include it only for C files - clean-up various Makefiles -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJaw6eWAAoJED2LAQed4NsGrK8QAJmbYg83TTNoOgQRK/7Lg+sj KL1+RGFxmdHRVOqG5n18L7Q4LmTD19tUFNQImrQTTrKrbH2vbMSTF2PfzdmDRwMz R5vW5+wsagfhSttOce/GR4p9+bM9XEclzEa3liqNVQxijOFXmkV14pn0x5anYfeB ABthxFFHcVn3exP/q3lmq048x1yNE71wUU5WQIWf6V/ZKf+++wQU8r7HpnATWYeO vtf8gZq+xyLLjhxoJF6n6olSZXI7Yhz4jV2G68/VroS312AUFWPogK+cSshWGlSw zGixM1q55oj9CXjZ37nR6pTzQhSZLf/uHX5beatlpeoJ4Hho6HlIABvx2oEnat7b o5RW64RB0gVJqlYZdKxL29HNrovr9tlWPTaIPGFRvWDpl3c1w+rMKXE+5hwu8jMJ 2jgxd5FZCgBaDsAKojmeQR7PAo2ffAdUO0Dj/SuAaMOpuHWHcnJk9kIN2PUrC+Sf d/H2soT9x+60KbQmtCEo5VfEN8bvNP3+ZSnadEG/gRN2IIa5FZAUQykU+i50gAvj tuKAokdRGZHvXM+buYFBfN6RbhVCXzBF/fAG7r37QVR2u1zaUszmgFOUqERhTQfm RNnyeAs9G9rljtna/AD7cIOdKTg8oETPISxt8Y6EzNMpI8PhF0aGoxso3yD19oH1 M+fq55RigsR48Kic40hY =N5BL -----END PGP SIGNATURE----- Merge tag 'kbuild-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - add a shell script to get Clang version - improve portability of build scripts - drop always-enabled CONFIG_THIN_ARCHIVE and remove unused code - rename built-in.o which is now thin archive to built-in.a - process clean/build targets one by one to get along with -j option - simplify ld-option - improve building with CONFIG_TRIM_UNUSED_KSYMS - define KBUILD_MODNAME even for objects shared among multiple modules - avoid linking multiple instances of same objects from composite objects - move <linux/compiler_types.h> to c_flags to include it only for C files - clean-up various Makefiles * tag 'kbuild-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (29 commits) kbuild: get <linux/compiler_types.h> out of <linux/kconfig.h> kbuild: clean up link rule of composite modules kbuild: clean up archive rule of built-in.a kbuild: remove partial section mismatch detection for built-in.a net: liquidio: clean up Makefile for simpler composite object handling lib: zstd: clean up Makefile for simpler composite object handling kbuild: link $(real-obj-y) instead of $(obj-y) into built-in.a kbuild: rename real-objs-y/m to real-obj-y/m kbuild: move modname and modname-multi close to modname_flags kbuild: simplify modname calculation kbuild: fix modname for composite modules kbuild: define KBUILD_MODNAME even if multiple modules share objects kbuild: remove unnecessary $(subst $(obj)/, , ...) in modname-multi kbuild: Use ls(1) instead of stat(1) to obtain file size kbuild: link vmlinux only once for CONFIG_TRIM_UNUSED_KSYMS kbuild: move include/config/ksym/* to include/ksym/* kbuild: move CONFIG_TRIM_UNUSED_KSYMS code unneeded for external module kbuild: restore autoksyms.h touch to the top Makefile kbuild: move 'scripts' target below kbuild: remove wrong 'touch' in adjust_autoksyms.sh ...
This commit is contained in:
Linus Torvalds
commit
3b24b83763
27 changed files with 234 additions and 304 deletions
89
Makefile
89
Makefile
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@ -35,7 +35,7 @@ unexport GREP_OPTIONS
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# Most importantly: sub-Makefiles should only ever modify files in
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# their own directory. If in some directory we have a dependency on
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# a file in another dir (which doesn't happen often, but it's often
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# unavoidable when linking the built-in.o targets which finally
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# unavoidable when linking the built-in.a targets which finally
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# turn into vmlinux), we will call a sub make in that other dir, and
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# after that we are sure that everything which is in that other dir
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# is now up to date.
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@ -220,7 +220,8 @@ export srctree objtree VPATH
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version_h := include/generated/uapi/linux/version.h
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old_version_h := include/linux/version.h
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no-dot-config-targets := clean mrproper distclean \
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clean-targets := %clean mrproper cleandocs
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no-dot-config-targets := $(clean-targets) \
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cscope gtags TAGS tags help% %docs check% coccicheck \
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$(version_h) headers_% archheaders archscripts \
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kernelversion %src-pkg
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@ -243,6 +244,14 @@ ifeq ($(KBUILD_EXTMOD),)
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endif
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endif
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endif
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# For "make -j clean all", "make -j mrproper defconfig all", etc.
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ifneq ($(filter $(clean-targets),$(MAKECMDGOALS)),)
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ifneq ($(filter-out $(clean-targets),$(MAKECMDGOALS)),)
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mixed-targets := 1
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endif
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endif
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# install and modules_install need also be processed one by one
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ifneq ($(filter install,$(MAKECMDGOALS)),)
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ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
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@ -418,6 +427,7 @@ KBUILD_CFLAGS_KERNEL :=
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KBUILD_AFLAGS_MODULE := -DMODULE
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KBUILD_CFLAGS_MODULE := -DMODULE
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KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
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LDFLAGS :=
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GCC_PLUGINS_CFLAGS :=
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export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
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@ -556,14 +566,6 @@ endif
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export KBUILD_MODULES KBUILD_BUILTIN
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ifeq ($(KBUILD_EXTMOD),)
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# Additional helpers built in scripts/
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# Carefully list dependencies so we do not try to build scripts twice
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# in parallel
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PHONY += scripts
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scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \
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asm-generic gcc-plugins
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$(Q)$(MAKE) $(build)=$(@)
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# Objects we will link into vmlinux / subdirs we need to visit
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init-y := init/
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drivers-y := drivers/ sound/ firmware/
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@ -611,13 +613,6 @@ else
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include/config/auto.conf: ;
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endif # $(dot-config)
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# For the kernel to actually contain only the needed exported symbols,
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# we have to build modules as well to determine what those symbols are.
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# (this can be evaluated only once include/config/auto.conf has been included)
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ifdef CONFIG_TRIM_UNUSED_KSYMS
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KBUILD_MODULES := 1
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endif
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# The all: target is the default when no target is given on the
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# command line.
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# This allow a user to issue only 'make' to build a kernel including modules
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@ -984,13 +979,13 @@ vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
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vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
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$(init-) $(core-) $(drivers-) $(net-) $(libs-) $(virt-))))
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init-y := $(patsubst %/, %/built-in.o, $(init-y))
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core-y := $(patsubst %/, %/built-in.o, $(core-y))
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drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
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net-y := $(patsubst %/, %/built-in.o, $(net-y))
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init-y := $(patsubst %/, %/built-in.a, $(init-y))
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core-y := $(patsubst %/, %/built-in.a, $(core-y))
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drivers-y := $(patsubst %/, %/built-in.a, $(drivers-y))
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net-y := $(patsubst %/, %/built-in.a, $(net-y))
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libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
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libs-y2 := $(filter-out %.a, $(patsubst %/, %/built-in.o, $(libs-y)))
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virt-y := $(patsubst %/, %/built-in.o, $(virt-y))
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libs-y2 := $(patsubst %/, %/built-in.a, $(filter-out %.a, $(libs-y)))
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virt-y := $(patsubst %/, %/built-in.a, $(virt-y))
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# Externally visible symbols (used by link-vmlinux.sh)
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export KBUILD_VMLINUX_INIT := $(head-y) $(init-y)
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@ -1003,25 +998,26 @@ export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Doc
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vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) $(KBUILD_VMLINUX_LIBS)
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# Include targets which we want to execute sequentially if the rest of the
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# kernel build went well. If CONFIG_TRIM_UNUSED_KSYMS is set, this might be
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# evaluated more than once.
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PHONY += vmlinux_prereq
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vmlinux_prereq: $(vmlinux-deps) FORCE
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ifdef CONFIG_HEADERS_CHECK
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$(Q)$(MAKE) -f $(srctree)/Makefile headers_check
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endif
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ifdef CONFIG_GDB_SCRIPTS
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$(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py)
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endif
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# Recurse until adjust_autoksyms.sh is satisfied
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PHONY += autoksyms_recursive
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autoksyms_recursive: $(vmlinux-deps)
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ifdef CONFIG_TRIM_UNUSED_KSYMS
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$(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \
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"$(MAKE) -f $(srctree)/Makefile vmlinux"
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endif
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# standalone target for easier testing
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include/generated/autoksyms.h: FORCE
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$(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh true
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# For the kernel to actually contain only the needed exported symbols,
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# we have to build modules as well to determine what those symbols are.
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# (this can be evaluated only once include/config/auto.conf has been included)
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ifdef CONFIG_TRIM_UNUSED_KSYMS
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KBUILD_MODULES := 1
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endif
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autoksyms_h := $(if $(CONFIG_TRIM_UNUSED_KSYMS), include/generated/autoksyms.h)
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$(autoksyms_h):
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$(Q)mkdir -p $(dir $@)
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$(Q)touch $@
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ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
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@ -1030,7 +1026,13 @@ cmd_link-vmlinux = \
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$(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) ; \
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$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
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vmlinux: scripts/link-vmlinux.sh vmlinux_prereq $(vmlinux-deps) FORCE
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vmlinux: scripts/link-vmlinux.sh autoksyms_recursive $(vmlinux-deps) FORCE
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ifdef CONFIG_HEADERS_CHECK
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$(Q)$(MAKE) -f $(srctree)/Makefile headers_check
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endif
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ifdef CONFIG_GDB_SCRIPTS
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$(Q)ln -fsn $(abspath $(srctree)/scripts/gdb/vmlinux-gdb.py)
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endif
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+$(call if_changed,link-vmlinux)
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# Build samples along the rest of the kernel
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@ -1060,6 +1062,13 @@ endef
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include/config/kernel.release: include/config/auto.conf FORCE
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$(call filechk,kernel.release)
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# Additional helpers built in scripts/
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# Carefully list dependencies so we do not try to build scripts twice
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# in parallel
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PHONY += scripts
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scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \
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asm-generic gcc-plugins $(autoksyms_h)
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$(Q)$(MAKE) $(build)=$(@)
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# Things we need to do before we recursively start building the kernel
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# or the modules are listed in "prepare".
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@ -1088,7 +1097,7 @@ endif
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# that need to depend on updated CONFIG_* values can be checked here.
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prepare2: prepare3 prepare-compiler-check outputmakefile asm-generic
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prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
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prepare1: prepare2 $(version_h) $(autoksyms_h) include/generated/utsrelease.h \
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include/config/auto.conf
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$(cmd_crmodverdir)
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@ -1327,7 +1336,7 @@ endif # CONFIG_MODULES
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# make distclean Remove editor backup files, patch leftover files and the like
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# Directories & files removed with 'make clean'
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CLEAN_DIRS += $(MODVERDIR)
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CLEAN_DIRS += $(MODVERDIR) include/ksym
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# Directories & files removed with 'make mrproper'
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MRPROPER_DIRS += include/config usr/include include/generated \
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