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authorLinus Torvalds <torvalds@linux-foundation.org>2019-09-20 08:36:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-20 08:36:47 -0700
commitd7b0827f28ab3a4fd65864451ffefa695e3255fd (patch)
treeed93beb88fa420cf276b2c3fc22c02c022dde693 /scripts
parent574cc4539762561d96b456dbc0544d8898bd4c6e (diff)
parent77564a4829ef6d309331d443ea6ceb065f3dc371 (diff)
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Merge tag 'kbuild-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada: - add modpost warn exported symbols marked as 'static' because 'static' and EXPORT_SYMBOL is an odd combination - break the build early if gold linker is used - optimize the Bison rule to produce .c and .h files by a single pattern rule - handle PREEMPT_RT in the module vermagic and UTS_VERSION - warn CONFIG options leaked to the user-space except existing ones - make single targets work properly - rebuild modules when module linker scripts are updated - split the module final link stage into scripts/Makefile.modfinal - fix the missed error code in merge_config.sh - improve the error message displayed on the attempt of the O= build in unclean source tree - remove 'clean-dirs' syntax - disable -Wimplicit-fallthrough warning for Clang - add CONFIG_CC_OPTIMIZE_FOR_SIZE_O3 for ARC - remove ARCH_{CPP,A,C}FLAGS variables - add $(BASH) to run bash scripts - change *CFLAGS_<basetarget>.o to take the relative path to $(obj) instead of the basename - stop suppressing Clang's -Wunused-function warnings when W=1 - fix linux/export.h to avoid genksyms calculating CRC of trimmed exported symbols - misc cleanups * tag 'kbuild-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (63 commits) genksyms: convert to SPDX License Identifier for lex.l and parse.y modpost: use __section in the output to *.mod.c modpost: use MODULE_INFO() for __module_depends export.h, genksyms: do not make genksyms calculate CRC of trimmed symbols export.h: remove defined(__KERNEL__), which is no longer needed kbuild: allow Clang to find unused static inline functions for W=1 build kbuild: rename KBUILD_ENABLE_EXTRA_GCC_CHECKS to KBUILD_EXTRA_WARN kbuild: refactor scripts/Makefile.extrawarn merge_config.sh: ignore unwanted grep errors kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj) modpost: add NOFAIL to strndup modpost: add guid_t type definition kbuild: add $(BASH) to run scripts with bash-extension kbuild: remove ARCH_{CPP,A,C}FLAGS kbuild,arc: add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 for ARC kbuild: Do not enable -Wimplicit-fallthrough for clang for now kbuild: clean up subdir-ymn calculation in Makefile.clean kbuild: remove unneeded '+' marker from cmd_clean kbuild: remove clean-dirs syntax kbuild: check clean srctree even earlier ...
Diffstat (limited to 'scripts')
-rw-r--r--scripts/Kconfig.include3
-rw-r--r--scripts/Makefile2
-rw-r--r--scripts/Makefile.build73
-rw-r--r--scripts/Makefile.clean31
-rw-r--r--scripts/Makefile.extrawarn121
-rw-r--r--scripts/Makefile.host39
-rw-r--r--scripts/Makefile.lib63
-rw-r--r--scripts/Makefile.modfinal60
-rw-r--r--scripts/Makefile.modpost80
-rw-r--r--scripts/Makefile.package (renamed from scripts/package/Makefile)43
-rw-r--r--scripts/basic/Makefile14
-rw-r--r--scripts/genksyms/Makefile11
-rw-r--r--scripts/genksyms/keywords.c6
-rw-r--r--scripts/genksyms/lex.l32
-rw-r--r--scripts/genksyms/parse.y32
-rwxr-xr-xscripts/headers_install.sh72
-rw-r--r--scripts/kconfig/Makefile10
-rwxr-xr-xscripts/kconfig/merge_config.sh12
-rwxr-xr-xscripts/link-vmlinux.sh40
-rwxr-xr-xscripts/mkcompile_h4
-rwxr-xr-xscripts/mkmakefile4
-rw-r--r--scripts/mod/file2alias.c5
-rw-r--r--scripts/mod/modpost.c48
23 files changed, 450 insertions, 355 deletions
diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include
index 4bbf4fc163a2..d4adfbe42690 100644
--- a/scripts/Kconfig.include
+++ b/scripts/Kconfig.include
@@ -35,5 +35,8 @@ ld-option = $(success,$(LD) -v $(1))
$(error-if,$(failure,command -v $(CC)),compiler '$(CC)' not found)
$(error-if,$(failure,command -v $(LD)),linker '$(LD)' not found)
+# Fail if the linker is gold as it's not capable of linking the kernel proper
+$(error-if,$(success, $(LD) -v | grep -q gold), gold linker '$(LD)' not supported)
+
# gcc version including patch level
gcc-version := $(shell,$(srctree)/scripts/gcc-version.sh $(CC))
diff --git a/scripts/Makefile b/scripts/Makefile
index 16bcb8087899..c42891e10ba3 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -36,4 +36,4 @@ subdir-$(CONFIG_MODVERSIONS) += genksyms
subdir-$(CONFIG_SECURITY_SELINUX) += selinux
# Let clean descend into subdirs
-subdir- += basic dtc gdb kconfig mod package
+subdir- += basic dtc gdb kconfig mod
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 2f66ed388d1c..f72aba64d611 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -52,7 +52,7 @@ ifndef obj
$(warning kbuild: Makefile.build is included improperly)
endif
-ifeq ($(MAKECMDGOALS)$(need-modorder),)
+ifeq ($(need-modorder),)
ifneq ($(obj-m),)
$(warning $(patsubst %.o,'%.ko',$(obj-m)) will not be built even though obj-m is specified.)
$(warning You cannot use subdir-y/m to visit a module Makefile. Use obj-y/m instead.)
@@ -76,11 +76,6 @@ endif
mod-targets := $(patsubst %.o, %.mod, $(obj-m))
-__build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \
- $(if $(KBUILD_MODULES),$(obj-m) $(mod-targets) $(modorder-target)) \
- $(subdir-ym) $(always)
- @:
-
# Linus' kernel sanity checking tool
ifeq ($(KBUILD_CHECKSRC),1)
quiet_cmd_checksrc = CHECK $<
@@ -90,23 +85,13 @@ else ifeq ($(KBUILD_CHECKSRC),2)
cmd_force_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $<
endif
-ifneq ($(KBUILD_ENABLE_EXTRA_GCC_CHECKS),)
+ifneq ($(KBUILD_EXTRA_WARN),)
cmd_checkdoc = $(srctree)/scripts/kernel-doc -none $<
endif
# Compile C sources (.c)
# ---------------------------------------------------------------------------
-# Default is built-in, unless we know otherwise
-$(foreach x, i ll lst o s symtypes, $(patsubst %.o,%.$(x),$(real-obj-m))): \
- part-of-module := y
-
-modkern_cflags = \
- $(if $(part-of-module), \
- $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \
- $(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL))
-quiet_modtag = $(if $(part-of-module),[M], )
-
quiet_cmd_cc_s_c = CC $(quiet_modtag) $@
cmd_cc_s_c = $(CC) $(filter-out $(DEBUG_CFLAGS), $(c_flags)) $(DISABLE_LTO) -fverbose-asm -S -o $@ $<
@@ -310,11 +295,6 @@ $(obj)/%.h.s: $(src)/%.h FORCE
# Compile assembler sources (.S)
# ---------------------------------------------------------------------------
-modkern_aflags := $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL)
-
-$(real-obj-m) : modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE)
-$(real-obj-m:.o=.s): modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE)
-
# .S file exports must have their C prototypes defined in asm/asm-prototypes.h
# or a file that it includes, in order to get versioned symbols. We build a
# dummy C file that includes asm-prototypes and the EXPORT_SYMBOL lines from
@@ -356,11 +336,7 @@ $(obj)/%.s: $(src)/%.S FORCE
quiet_cmd_as_o_S = AS $(quiet_modtag) $@
cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
-ifdef CONFIG_MODVERSIONS
-
-ASM_PROTOTYPES := $(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/asm-prototypes.h)
-
-ifneq ($(ASM_PROTOTYPES),)
+ifdef CONFIG_ASM_MODVERSIONS
# versioning matches the C process described above, with difference that
# we parse asm-prototypes.h C header to get function definitions.
@@ -376,7 +352,6 @@ cmd_modversions_S = \
rm -f $(@D)/.tmp_$(@F:.o=.ver); \
fi
endif
-endif
$(obj)/%.o: $(src)/%.S $(objtool_dep) FORCE
$(call if_changed_rule,as_o_S)
@@ -395,9 +370,9 @@ $(obj)/%.lds: $(src)/%.lds.S FORCE
# ASN.1 grammar
# ---------------------------------------------------------------------------
-quiet_cmd_asn1_compiler = ASN.1 $@
+quiet_cmd_asn1_compiler = ASN.1 $(basename $@).[ch]
cmd_asn1_compiler = $(objtree)/scripts/asn1_compiler $< \
- $(subst .h,.c,$@) $(subst .c,.h,$@)
+ $(basename $@).c $(basename $@).h
$(obj)/%.asn1.c $(obj)/%.asn1.h: $(src)/%.asn1 $(objtree)/scripts/asn1_compiler
$(call cmd,asn1_compiler)
@@ -489,12 +464,50 @@ targets += $(call intermediate_targets, .asn1.o, .asn1.c .asn1.h) \
$(call intermediate_targets, .lex.o, .lex.c) \
$(call intermediate_targets, .tab.o, .tab.c .tab.h)
+# Build
+# ---------------------------------------------------------------------------
+
+ifdef single-build
+
+curdir-single := $(sort $(foreach x, $(KBUILD_SINGLE_TARGETS), \
+ $(if $(filter $(x) $(basename $(x)).o, $(targets)), $(x))))
+
+# Handle single targets without any rule: show "Nothing to be done for ..." or
+# "No rule to make target ..." depending on whether the target exists.
+unknown-single := $(filter-out $(addsuffix /%, $(subdir-ym)), \
+ $(filter $(obj)/%, \
+ $(filter-out $(curdir-single), \
+ $(KBUILD_SINGLE_TARGETS))))
+
+__build: $(curdir-single) $(subdir-ym)
+ifneq ($(unknown-single),)
+ $(Q)$(MAKE) -f /dev/null $(unknown-single)
+endif
+ @:
+
+ifeq ($(curdir-single),)
+# Nothing to do in this directory. Do not include any .*.cmd file for speed-up
+targets :=
+else
+targets += $(curdir-single)
+endif
+
+else
+
+__build: $(if $(KBUILD_BUILTIN),$(builtin-target) $(lib-target) $(extra-y)) \
+ $(if $(KBUILD_MODULES),$(obj-m) $(mod-targets) $(modorder-target)) \
+ $(subdir-ym) $(always)
+ @:
+
+endif
+
# Descending
# ---------------------------------------------------------------------------
PHONY += $(subdir-ym)
$(subdir-ym):
$(Q)$(MAKE) $(build)=$@ \
+ $(if $(filter $@/, $(KBUILD_SINGLE_TARGETS)),single-build=) \
need-builtin=$(if $(filter $@/built-in.a, $(subdir-obj-y)),1) \
need-modorder=$(if $(need-modorder),$(if $(filter $@/modules.order, $(modorder)),1))
diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean
index 0b80e3207b20..e367eb95c5c0 100644
--- a/scripts/Makefile.clean
+++ b/scripts/Makefile.clean
@@ -17,17 +17,8 @@ include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-di
# Figure out what we need to build from the various variables
# ==========================================================================
-__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
-subdir-y += $(__subdir-y)
-__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
-subdir-m += $(__subdir-m)
-__subdir- := $(patsubst %/,%,$(filter %/, $(obj-)))
-subdir- += $(__subdir-)
-
-# Subdirectories we need to descend into
-
-subdir-ym := $(sort $(subdir-y) $(subdir-m))
-subdir-ymn := $(sort $(subdir-ym) $(subdir-))
+subdir-ymn := $(sort $(subdir-y) $(subdir-m) $(subdir-) \
+ $(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m) $(obj-))))
# Add subdir path
@@ -52,26 +43,14 @@ __clean-files := $(wildcard \
$(addprefix $(obj)/, $(filter-out $(objtree)/%, $(__clean-files))) \
$(filter $(objtree)/%, $(__clean-files)))
-# same as clean-files
-
-__clean-dirs := $(wildcard \
- $(addprefix $(obj)/, $(filter-out $(objtree)/%, $(clean-dirs))) \
- $(filter $(objtree)/%, $(clean-dirs)))
-
# ==========================================================================
-quiet_cmd_clean = CLEAN $(obj)
- cmd_clean = rm -f $(__clean-files)
-quiet_cmd_cleandir = CLEAN $(__clean-dirs)
- cmd_cleandir = rm -rf $(__clean-dirs)
-
+quiet_cmd_clean = CLEAN $(obj)
+ cmd_clean = rm -rf $(__clean-files)
__clean: $(subdir-ymn)
ifneq ($(strip $(__clean-files)),)
- +$(call cmd,clean)
-endif
-ifneq ($(strip $(__clean-dirs)),)
- +$(call cmd,cleandir)
+ $(call cmd,clean)
endif
@:
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index a74ce2e3c33e..ecddf83ac142 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -1,74 +1,91 @@
# SPDX-License-Identifier: GPL-2.0
# ==========================================================================
-#
# make W=... settings
#
-# W=1 - warnings that may be relevant and does not occur too often
-# W=2 - warnings that occur quite often but may still be relevant
-# W=3 - the more obscure warnings, can most likely be ignored
-#
-# $(call cc-option, -W...) handles gcc -W.. options which
-# are not supported by all versions of the compiler
+# There are three warning groups enabled by W=1, W=2, W=3.
+# They are independent, and can be combined like W=12 or W=123.
# ==========================================================================
KBUILD_CFLAGS += $(call cc-disable-warning, packed-not-aligned)
+# backward compatibility
+KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)
+
ifeq ("$(origin W)", "command line")
- export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
+ KBUILD_EXTRA_WARN := $(W)
endif
-ifdef KBUILD_ENABLE_EXTRA_GCC_CHECKS
-warning- := $(empty)
-
-warning-1 := -Wextra -Wunused -Wno-unused-parameter
-warning-1 += -Wmissing-declarations
-warning-1 += -Wmissing-format-attribute
-warning-1 += -Wmissing-prototypes
-warning-1 += -Wold-style-definition
-warning-1 += -Wmissing-include-dirs
-warning-1 += $(call cc-option, -Wunused-but-set-variable)
-warning-1 += $(call cc-option, -Wunused-const-variable)
-warning-1 += $(call cc-option, -Wpacked-not-aligned)
-warning-1 += $(call cc-option, -Wstringop-truncation)
+export KBUILD_EXTRA_WARN
+
+#
+# W=1 - warnings which may be relevant and do not occur too often
+#
+ifneq ($(findstring 1, $(KBUILD_EXTRA_WARN)),)
+
+KBUILD_CFLAGS += -Wextra -Wunused -Wno-unused-parameter
+KBUILD_CFLAGS += -Wmissing-declarations
+KBUILD_CFLAGS += -Wmissing-format-attribute
+KBUILD_CFLAGS += -Wmissing-prototypes
+KBUILD_CFLAGS += -Wold-style-definition
+KBUILD_CFLAGS += -Wmissing-include-dirs
+KBUILD_CFLAGS += $(call cc-option, -Wunused-but-set-variable)
+KBUILD_CFLAGS += $(call cc-option, -Wunused-const-variable)
+KBUILD_CFLAGS += $(call cc-option, -Wpacked-not-aligned)
+KBUILD_CFLAGS += $(call cc-option, -Wstringop-truncation)
# The following turn off the warnings enabled by -Wextra
-warning-1 += -Wno-missing-field-initializers
-warning-1 += -Wno-sign-compare
-
-warning-2 += -Wcast-align
-warning-2 += -Wdisabled-optimization
-warning-2 += -Wnested-externs
-warning-2 += -Wshadow
-warning-2 += $(call cc-option, -Wlogical-op)
-warning-2 += -Wmissing-field-initializers
-warning-2 += -Wsign-compare
-warning-2 += $(call cc-option, -Wmaybe-uninitialized)
-warning-2 += $(call cc-option, -Wunused-macros)
-
-warning-3 := -Wbad-function-cast
-warning-3 += -Wcast-qual
-warning-3 += -Wconversion
-warning-3 += -Wpacked
-warning-3 += -Wpadded
-warning-3 += -Wpointer-arith
-warning-3 += -Wredundant-decls
-warning-3 += -Wswitch-default
-warning-3 += $(call cc-option, -Wpacked-bitfield-compat)
-
-warning := $(warning-$(findstring 1, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
-warning += $(warning-$(findstring 2, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
-warning += $(warning-$(findstring 3, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)))
-
-ifeq ("$(strip $(warning))","")
- $(error W=$(KBUILD_ENABLE_EXTRA_GCC_CHECKS) is unknown)
-endif
+KBUILD_CFLAGS += -Wno-missing-field-initializers
+KBUILD_CFLAGS += -Wno-sign-compare
+
+KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN1
-KBUILD_CFLAGS += $(warning)
else
+# Some diagnostics enabled by default are noisy.
+# Suppress them by using -Wno... except for W=1.
+
ifdef CONFIG_CC_IS_CLANG
KBUILD_CFLAGS += -Wno-initializer-overrides
KBUILD_CFLAGS += -Wno-format
KBUILD_CFLAGS += -Wno-sign-compare
KBUILD_CFLAGS += -Wno-format-zero-length
endif
+
+endif
+
+#
+# W=2 - warnings which occur quite often but may still be relevant
+#
+ifneq ($(findstring 2, $(KBUILD_EXTRA_WARN)),)
+
+KBUILD_CFLAGS += -Wcast-align
+KBUILD_CFLAGS += -Wdisabled-optimization
+KBUILD_CFLAGS += -Wnested-externs
+KBUILD_CFLAGS += -Wshadow
+KBUILD_CFLAGS += $(call cc-option, -Wlogical-op)
+KBUILD_CFLAGS += -Wmissing-field-initializers
+KBUILD_CFLAGS += -Wsign-compare
+KBUILD_CFLAGS += $(call cc-option, -Wmaybe-uninitialized)
+KBUILD_CFLAGS += $(call cc-option, -Wunused-macros)
+
+KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN2
+
+endif
+
+#
+# W=3 - more obscure warnings, can most likely be ignored
+#
+ifneq ($(findstring 3, $(KBUILD_EXTRA_WARN)),)
+
+KBUILD_CFLAGS += -Wbad-function-cast
+KBUILD_CFLAGS += -Wcast-qual
+KBUILD_CFLAGS += -Wconversion
+KBUILD_CFLAGS += -Wpacked
+KBUILD_CFLAGS += -Wpadded
+KBUILD_CFLAGS += -Wpointer-arith
+KBUILD_CFLAGS += -Wredundant-decls
+KBUILD_CFLAGS += -Wswitch-default
+KBUILD_CFLAGS += $(call cc-option, -Wpacked-bitfield-compat)
+
+KBUILD_CPPFLAGS += -DKBUILD_EXTRA_WARN3
+
endif
diff --git a/scripts/Makefile.host b/scripts/Makefile.host
index 2208ebbd8c4c..4c51c95d40f4 100644
--- a/scripts/Makefile.host
+++ b/scripts/Makefile.host
@@ -1,4 +1,21 @@
# SPDX-License-Identifier: GPL-2.0
+
+# LEX
+# ---------------------------------------------------------------------------
+quiet_cmd_flex = LEX $@
+ cmd_flex = $(LEX) -o$@ -L $<
+
+$(obj)/%.lex.c: $(src)/%.l FORCE
+ $(call if_changed,flex)
+
+# YACC
+# ---------------------------------------------------------------------------
+quiet_cmd_bison = YACC $(basename $@).[ch]
+ cmd_bison = $(YACC) -o $(basename $@).c --defines=$(basename $@).h -t -l $<
+
+$(obj)/%.tab.c $(obj)/%.tab.h: $(src)/%.y FORCE
+ $(call if_changed,bison)
+
# ==========================================================================
# Building binaries on the host system
# Binaries are used during the compilation of the kernel, for example
@@ -63,9 +80,9 @@ host-cxxshobjs := $(addprefix $(obj)/,$(host-cxxshobjs))
# Handle options to gcc. Support building with separate output directory
_hostc_flags = $(KBUILD_HOSTCFLAGS) $(HOST_EXTRACFLAGS) \
- $(HOSTCFLAGS_$(basetarget).o)
+ $(HOSTCFLAGS_$(target-stem).o)
_hostcxx_flags = $(KBUILD_HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
- $(HOSTCXXFLAGS_$(basetarget).o)
+ $(HOSTCXXFLAGS_$(target-stem).o)
# $(objtree)/$(obj) for including generated headers from checkin source files
ifeq ($(KBUILD_EXTMOD),)
@@ -85,7 +102,7 @@ hostcxx_flags = -Wp,-MD,$(depfile) $(_hostcxx_flags)
# host-csingle -> Executable
quiet_cmd_host-csingle = HOSTCC $@
cmd_host-csingle = $(HOSTCC) $(hostc_flags) $(KBUILD_HOSTLDFLAGS) -o $@ $< \
- $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
+ $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem))
$(host-csingle): $(obj)/%: $(src)/%.c FORCE
$(call if_changed_dep,host-csingle)
@@ -93,8 +110,8 @@ $(host-csingle): $(obj)/%: $(src)/%.c FORCE
# host-cmulti -> executable
quiet_cmd_host-cmulti = HOSTLD $@
cmd_host-cmulti = $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -o $@ \
- $(addprefix $(obj)/,$($(@F)-objs)) \
- $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
+ $(addprefix $(obj)/, $($(target-stem)-objs)) \
+ $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem))
$(host-cmulti): FORCE
$(call if_changed,host-cmulti)
$(call multi_depend, $(host-cmulti), , -objs)
@@ -111,8 +128,8 @@ $(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE
quiet_cmd_host-cxxmulti = HOSTLD $@
cmd_host-cxxmulti = $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -o $@ \
$(foreach o,objs cxxobjs,\
- $(addprefix $(obj)/,$($(@F)-$(o)))) \
- $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
+ $(addprefix $(obj)/, $($(target-stem)-$(o)))) \
+ $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem))
$(host-cxxmulti): FORCE
$(call if_changed,host-cxxmulti)
$(call multi_depend, $(host-cxxmulti), , -objs -cxxobjs)
@@ -144,8 +161,8 @@ $(host-cxxshobjs): $(obj)/%.o: $(src)/%.c FORCE
# *.o -> .so shared library (host-cshlib)
quiet_cmd_host-cshlib = HOSTLLD -shared $@
cmd_host-cshlib = $(HOSTCC) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \
- $(addprefix $(obj)/,$($(@F:.so=-objs))) \
- $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
+ $(addprefix $(obj)/, $($(target-stem)-objs)) \
+ $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem).so)
$(host-cshlib): FORCE
$(call if_changed,host-cshlib)
$(call multi_depend, $(host-cshlib), .so, -objs)
@@ -154,8 +171,8 @@ $(call multi_depend, $(host-cshlib), .so, -objs)
# *.o -> .so shared library (host-cxxshlib)
quiet_cmd_host-cxxshlib = HOSTLLD -shared $@
cmd_host-cxxshlib = $(HOSTCXX) $(KBUILD_HOSTLDFLAGS) -shared -o $@ \
- $(addprefix $(obj)/,$($(@F:.so=-objs))) \
- $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(@F))
+ $(addprefix $(obj)/, $($(target-stem)-objs)) \
+ $(KBUILD_HOSTLDLIBS) $(HOSTLDLIBS_$(target-stem).so)
$(host-cxxshlib): FORCE
$(call if_changed,host-cxxshlib)
$(call multi_depend, $(host-cxxshlib), .so, -objs)
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 41c50f9461e5..4a0cdd6f5909 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -41,9 +41,9 @@ obj-m := $(filter-out %/, $(obj-m))
# Subdirectories we need to descend into
subdir-ym := $(sort $(subdir-y) $(subdir-m))
-# if $(foo-objs), $(foo-y), or $(foo-m) exists, foo.o is a composite object
-multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
-multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))), $(m))))
+# If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object
+multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))), $(m))))
+multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))), $(m))))
multi-used := $(multi-used-y) $(multi-used-m)
# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
@@ -52,8 +52,8 @@ subdir-obj-y := $(filter %/built-in.a, $(obj-y))
# Replace multi-part objects by their individual parts,
# including built-in.a from subdirectories
-real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
-real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
+real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
+real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
# DTB
# If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built
@@ -101,6 +101,9 @@ modname-multi = $(subst $(space),:,$(sort $(foreach m,$(multi-used),\
modname = $(if $(modname-multi),$(modname-multi),$(basetarget))
+# target with $(obj)/ and its suffix stripped
+target-stem = $(basename $(patsubst $(obj)/%,%,$@))
+
# These flags are needed for modversions and compiling, so we define them here
# $(modname_flags) defines KBUILD_MODNAME as the name of the module it will
# end up in (or would, if it gets compiled in)
@@ -109,12 +112,12 @@ basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget))
modname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname))
orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \
- $(ccflags-y) $(CFLAGS_$(basetarget).o)
-_c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
+ $(ccflags-y) $(CFLAGS_$(target-stem).o)
+_c_flags = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), $(orig_c_flags))
orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) \
- $(asflags-y) $(AFLAGS_$(basetarget).o)
-_a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
-_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
+ $(asflags-y) $(AFLAGS_$(target-stem).o)
+_a_flags = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), $(orig_a_flags))
+_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds)
#
# Enable gcov profiling flags for a file, directory or for all files depending
@@ -159,6 +162,18 @@ _cpp_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj)
endif
endif
+part-of-module = $(if $(filter $(basename $@).o, $(real-obj-m)),y)
+quiet_modtag = $(if $(part-of-module),[M], )
+
+modkern_cflags = \
+ $(if $(part-of-module), \
+ $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \
+ $(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL))
+
+modkern_aflags = $(if $(part-of-module), \
+ $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE), \
+ $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL))
+
c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
-include $(srctree)/include/linux/compiler_types.h \
$(_c_flags) $(modkern_cflags) \
@@ -187,28 +202,6 @@ $(foreach m, $(notdir $1), \
$(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
endef
-# LEX
-# ---------------------------------------------------------------------------
-quiet_cmd_flex = LEX $@
- cmd_flex = $(LEX) -o$@ -L $<
-
-$(obj)/%.lex.c: $(src)/%.l FORCE
- $(call if_changed,flex)
-
-# YACC
-# ---------------------------------------------------------------------------
-quiet_cmd_bison = YACC $@
- cmd_bison = $(YACC) -o$@ -t -l $<
-
-$(obj)/%.tab.c: $(src)/%.y FORCE
- $(call if_changed,bison)
-
-quiet_cmd_bison_h = YACC $@
- cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $<
-
-$(obj)/%.tab.h: $(src)/%.y FORCE
- $(call if_changed,bison_h)
-
# Shipped files
# ===========================================================================
@@ -258,7 +251,7 @@ quiet_cmd_gzip = GZIP $@
DTC ?= $(objtree)/scripts/dtc/dtc
# Disable noisy checks by default
-ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
+ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),)
DTC_FLAGS += -Wno-unit_address_vs_reg \
-Wno-unit_address_format \
-Wno-avoid_unnecessary_addr_size \
@@ -269,7 +262,7 @@ DTC_FLAGS += -Wno-unit_address_vs_reg \
-Wno-pci_device_reg
endif
-ifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
+ifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),)
DTC_FLAGS += -Wnode_name_chars_strict \
-Wproperty_name_chars_strict
endif
@@ -374,7 +367,7 @@ UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
quiet_cmd_uimage = UIMAGE $@
- cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
+ cmd_uimage = $(BASH) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
-C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
-T $(UIMAGE_TYPE) \
-a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal
new file mode 100644
index 000000000000..411c1e600e7d
--- /dev/null
+++ b/scripts/Makefile.modfinal
@@ -0,0 +1,60 @@
+# SPDX-License-Identifier: GPL-2.0-only
+# ===========================================================================
+# Module final link
+# ===========================================================================
+
+PHONY := __modfinal
+__modfinal:
+
+include $(srctree)/scripts/Kbuild.include
+
+# for c_flags
+include $(srctree)/scripts/Makefile.lib
+
+# find all modules listed in modules.order
+modules := $(sort $(shell cat $(MODORDER)))
+
+__modfinal: $(modules)
+ @:
+
+# modname and part-of-module are set to make c_flags define proper module flags
+modname = $(notdir $(@:.mod.o=))
+part-of-module = y
+
+quiet_cmd_cc_o_c = CC [M] $@
+ cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
+
+%.mod.o: %.mod.c FORCE
+ $(call if_changed_dep,cc_o_c)
+
+ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
+
+quiet_cmd_ld_ko_o = LD [M] $@
+ cmd_ld_ko_o = \
+ $(LD) -r $(KBUILD_LDFLAGS) \
+ $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \
+ $(addprefix -T , $(KBUILD_LDS_MODULE)) \
+ -o $@ $(filter %.o, $^); \
+ $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
+
+$(modules): %.ko: %.o %.mod.o $(KBUILD_LDS_MODULE) FORCE
+ +$(call if_changed,ld_ko_o)
+
+targets += $(modules) $(modules:.ko=.mod.o)
+
+# Add FORCE to the prequisites of a target to force it to be always rebuilt.
+# ---------------------------------------------------------------------------
+
+PHONY += FORCE
+FORCE:
+
+# Read all saved command lines and dependencies for the $(targets) we
+# may be building above, using $(if_changed{,_dep}). As an
+# optimization, we don't need to read them if the target does not
+# exist, we will rebuild anyway in that case.
+
+existing-targets := $(wildcard $(sort $(targets)))
+
+-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
+
+.PHONY: $(PHONY)
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 26e6574ecd08..9800a3988f23 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -15,15 +15,13 @@
# 2) modpost is then used to
# 3) create one <module>.mod.c file pr. module
# 4) create one Module.symvers file with CRC for all exported symbols
-# 5) compile all <module>.mod.c files
-# 6) final link of the module to a <module.ko> file
# Step 3 is used to place certain information in the module's ELF
# section, including information such as:
# Version magic (see include/linux/vermagic.h for full details)
# - Kernel release
# - SMP is CONFIG_SMP
-# - PREEMPT is CONFIG_PREEMPT
+# - PREEMPT is CONFIG_PREEMPT[_RT]
# - GCC Version
# Module info
# - Module version (MODULE_VERSION)
@@ -60,13 +58,10 @@ MODPOST = scripts/mod/modpost \
ifdef MODPOST_VMLINUX
-__modpost: vmlinux.o
+quiet_cmd_modpost = MODPOST vmlinux.o
+ cmd_modpost = $(MODPOST) vmlinux.o
-quiet_cmd_modpost = MODPOST $@
- cmd_modpost = $(MODPOST) $@
-
-PHONY += vmlinux.o
-vmlinux.o:
+__modpost:
$(call cmd,modpost)
else
@@ -83,73 +78,22 @@ include $(if $(wildcard $(KBUILD_EXTMOD)/Kbuild), \
$(KBUILD_EXTMOD)/Kbuild, $(KBUILD_EXTMOD)/Makefile)
endif
-include scripts/Makefile.lib
+MODPOST += $(subst -i,-n,$(filter -i,$(MAKEFLAGS))) -s -T - $(wildcard vmlinux)
# find all modules listed in modules.order
modules := $(sort $(shell cat $(MODORDER)))
-# Stop after building .o files if NOFINAL is set. Makes compile tests quicker
-__modpost: $(if $(KBUILD_MODPOST_NOFINAL), $(modules:.ko:.o),$(modules))
- @:
-
-MODPOST += $(subst -i,-n,$(filter -i,$(MAKEFLAGS))) -s -T - $(wildcard vmlinux)
-
-# We can go over command line length here, so be careful.
+# Read out modules.order instead of expanding $(modules) to pass in modpost.
+# Otherwise, allmodconfig would fail with "Argument list too long".
quiet_cmd_modpost = MODPOST $(words $(modules)) modules
cmd_modpost = sed 's/ko$$/o/' $(MODORDER) | $(MODPOST)
-PHONY += modules-modpost
-modules-modpost:
+__modpost:
+ @$(kecho) ' Building modules, stage 2.'
$(call cmd,modpost)
-
-# Declare generated files as targets for modpost
-$(modules:.ko=.mod.c): modules-modpost
-
-# Step 5), compile all *.mod.c files
-
-# modname is set to make c_flags define KBUILD_MODNAME
-modname = $(notdir $(@:.mod.o=))
-
-quiet_cmd_cc_o_c = CC $@
- cmd_cc_o_c = $(CC) $(c_flags) $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE) \
- -c -o $@ $<
-
-$(modules:.ko=.mod.o): %.mod.o: %.mod.c FORCE
- $(call if_changed_dep,cc_o_c)
-
-targets += $(modules:.ko=.mod.o)
-
-ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
-
-# Step 6), final link of the modules with optional arch pass after final link
-quiet_cmd_ld_ko_o = LD [M] $@
- cmd_ld_ko_o = \
- $(LD) -r $(KBUILD_LDFLAGS) \
- $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \
- -o $@ $(real-prereqs) ; \
- $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
-
-$(modules): %.ko :%.o %.mod.o FORCE
- +$(call if_changed,ld_ko_o)
-
-targets += $(modules)
-
-
-# Add FORCE to the prequisites of a target to force it to be always rebuilt.
-# ---------------------------------------------------------------------------
-
-PHONY += FORCE
-
-FORCE:
-
-# Read all saved command lines and dependencies for the $(targets) we
-# may be building above, using $(if_changed{,_dep}). As an
-# optimization, we don't need to read them if the target does not
-# exist, we will rebuild anyway in that case.
-
-existing-targets := $(wildcard $(sort $(targets)))
-
--include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
+ifneq ($(KBUILD_MODPOST_NOFINAL),1)
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modfinal
+endif
endif
diff --git a/scripts/package/Makefile b/scripts/Makefile.package
index ca7f46b562a4..56eadcc48d46 100644
--- a/scripts/package/Makefile
+++ b/scripts/Makefile.package
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
# Makefile for the different targets used to generate full packages of a kernel
-# It uses the generic clean infrastructure of kbuild
+
+include $(srctree)/scripts/Kbuild.include
# RPM target
# ---------------------------------------------------------------------------
@@ -50,7 +51,8 @@ rm -f $(objtree)/.scmversion
# rpm-pkg
# ---------------------------------------------------------------------------
-rpm-pkg: FORCE
+PHONY += rpm-pkg
+rpm-pkg:
$(MAKE) clean
$(CONFIG_SHELL) $(MKSPEC) >$(objtree)/kernel.spec
$(call cmd,src_tar,$(KERNELPATH),kernel.spec)
@@ -59,15 +61,15 @@ rpm-pkg: FORCE
# binrpm-pkg
# ---------------------------------------------------------------------------
-binrpm-pkg: FORCE
+PHONY += binrpm-pkg
+binrpm-pkg:
$(MAKE) -f $(srctree)/Makefile
$(CONFIG_SHELL) $(MKSPEC) prebuilt > $(objtree)/binkernel.spec
+rpmbuild $(RPMOPTS) --define "_builddir $(objtree)" --target \
$(UTS_MACHINE) -bb $(objtree)/binkernel.spec
-clean-files += $(objtree)/*.spec
-
-deb-pkg: FORCE
+PHONY += deb-pkg
+deb-pkg:
$(MAKE) clean
$(CONFIG_SHELL) $(srctree)/scripts/package/mkdebian
$(call cmd,src_tar,$(KDEB_SOURCENAME))
@@ -75,18 +77,19 @@ deb-pkg: FORCE
mv $(KDEB_SOURCENAME).tar.gz ../$(KDEB_SOURCENAME)_$${origversion}.orig.tar.gz
+dpkg-buildpackage -r$(KBUILD_PKG_ROOTCMD) -a$$(cat debian/arch) $(DPKG_FLAGS) -i.git -us -uc
-bindeb-pkg: FORCE
+PHONY += bindeb-pkg
+bindeb-pkg:
$(CONFIG_SHELL) $(srctree)/scripts/package/mkdebian
+dpkg-buildpackage -r$(KBUILD_PKG_ROOTCMD) -a$$(cat debian/arch) $(DPKG_FLAGS) -b -nc -uc
-intdeb-pkg: FORCE
+PHONY += intdeb-pkg
+intdeb-pkg:
+$(CONFIG_SHELL) $(srctree)/scripts/package/builddeb
-clean-dirs += $(objtree)/debian/
-
# snap-pkg
# ---------------------------------------------------------------------------
-snap-pkg: FORCE
+PHONY += snap-pkg
+snap-pkg:
rm -rf $(objtree)/snap
mkdir $(objtree)/snap
$(MAKE) clean
@@ -98,17 +101,14 @@ snap-pkg: FORCE
cd $(objtree)/snap && \
snapcraft --target-arch=$(UTS_MACHINE)
-clean-dirs += $(objtree)/snap/
-
# tarball targets
# ---------------------------------------------------------------------------
-tar%pkg: FORCE
+tar-pkgs := tar-pkg targz-pkg tarbz2-pkg tarxz-pkg
+PHONY += $(tar-pkgs)
+$(tar-pkgs):
$(MAKE) -f $(srctree)/Makefile
+$(CONFIG_SHELL) $(srctree)/scripts/package/buildtar $@
-clean-dirs += $(objtree)/tar-install/
-
-
# perf-pkg - generate a source tarball with perf source
# ---------------------------------------------------------------------------
@@ -133,12 +133,15 @@ $(if $(findstring xz,$@),xz, \
$(error unknown target $@)))) \
-f -9 $(perf-tar).tar)
-perf-%pkg: FORCE
+perf-tar-pkgs := perf-tar-src-pkg perf-targz-src-pkg perf-tarbz2-src-pkg perf-tarxz-src-pkg
+PHONY += $(perf-tar-pkgs)
+$(perf-tar-pkgs):
$(call cmd,perf_tar)
# Help text displayed when executing 'make help'
# ---------------------------------------------------------------------------
-help: FORCE
+PHONY += help
+help:
@echo ' rpm-pkg - Build both source and binary RPM kernel packages'
@echo ' binrpm-pkg - Build only the binary kernel RPM package'
@echo ' deb-pkg - Build both source and binary deb kernel packages'
@@ -152,3 +155,5 @@ help: FORCE
@echo ' perf-targz-src-pkg - Build $(perf-tar).tar.gz source tarball'
@echo ' perf-tarbz2-src-pkg - Build $(perf-tar).tar.bz2 source tarball'
@echo ' perf-tarxz-src-pkg - Build $(perf-tar).tar.xz source tarball'
+
+.PHONY: $(PHONY)
diff --git a/scripts/basic/Makefile b/scripts/basic/Makefile
index 548aeb592806..7c9cb80d097b 100644
--- a/scripts/basic/Makefile
+++ b/scripts/basic/Makefile
@@ -1,16 +1,6 @@
# SPDX-License-Identifier: GPL-2.0-only
-###
-# This Makefile lists the most basic programs used during the build process.
-# The programs listed herein are what are needed to do the basic stuff,
-# such as fix file dependencies.
-# This initial step is needed to avoid files to be recompiled
-# when kernel configuration changes (which is what happens when
-# .config is included by main Makefile.
-# ---------------------------------------------------------------------------
-# fixdep: Used to generate dependency information during build process
+#
+# fixdep: used to generate dependency information during build process
hostprogs-y := fixdep
always := $(hostprogs-y)
-
-# fixdep is needed to compile other host programs
-$(addprefix $(obj)/,$(filter-out fixdep,$(always))): $(obj)/fixdep
diff --git a/scripts/genksyms/Makefile b/scripts/genksyms/Makefile
index 66c314bc5933..78629f515e78 100644
--- a/scripts/genksyms/Makefile
+++ b/scripts/genksyms/Makefile
@@ -12,22 +12,15 @@ genksyms-objs := genksyms.o parse.tab.o lex.lex.o
#
# Just in case, run "$(YACC) --version" without suppressing stderr
# so that 'bison: not found' will be displayed if it is missing.
-ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
+ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),)
quiet_cmd_bison_no_warn = $(quiet_cmd_bison)
cmd_bison_no_warn = $(YACC) --version >/dev/null; \
$(cmd_bison) 2>/dev/null
-$(obj)/parse.tab.c: $(src)/parse.y FORCE
+$(obj)/pars%.tab.c $(obj)/pars%.tab.h: $(src)/pars%.y FORCE
$(call if_changed,bison_no_warn)
-quiet_cmd_bison_h_no_warn = $(quiet_cmd_bison_h)
- cmd_bison_h_no_warn = $(YACC) --version >/dev/null; \
- $(cmd_bison_h) 2>/dev/null
-
-$(obj)/parse.tab.h: $(src)/parse.y FORCE
- $(call if_changed,bison_h_no_warn)
-
endif
# -I needed for generated C source (shipped source)
diff --git a/scripts/genksyms/keywords.c b/scripts/genksyms/keywords.c
index c586d32dd2c3..7a85c4e21175 100644
--- a/scripts/genksyms/keywords.c
+++ b/scripts/genksyms/keywords.c
@@ -3,11 +3,7 @@ static struct resword {
const char *name;
int token;
} keywords[] = {
- { "EXPORT_SYMBOL", EXPORT_SYMBOL_KEYW },
- { "EXPORT_SYMBOL_GPL", EXPORT_SYMBOL_KEYW },
- { "EXPORT_SYMBOL_GPL_FUTURE", EXPORT_SYMBOL_KEYW },
- { "EXPORT_UNUSED_SYMBOL", EXPORT_SYMBOL_KEYW },
- { "EXPORT_UNUSED_SYMBOL_GPL", EXPORT_SYMBOL_KEYW },
+ { "__GENKSYMS_EXPORT_SYMBOL", EXPORT_SYMBOL_KEYW },
{ "__asm", ASM_KEYW },
{ "__asm__", ASM_KEYW },
{ "__attribute", ATTRIBUTE_KEYW },
diff --git a/scripts/genksyms/lex.l b/scripts/genksyms/lex.l
index d29c774f51b6..e265c5d96861 100644
--- a/scripts/genksyms/lex.l
+++ b/scripts/genksyms/lex.l
@@ -1,25 +1,13 @@
-/* Lexical analysis for genksyms.
- Copyright 1996, 1997 Linux International.
-
- New implementation contributed by Richard Henderson <rth@tamu.edu>
- Based on original work by Bjorn Ekwall <bj0rn@blox.se>
-
- Taken from Linux modutils 2.4.22.
-
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2 of the License, or (at your
- option) any later version.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Lexical analysis for genksyms.
+ * Copyright 1996, 1997 Linux International.
+ *
+ * New implementation contributed by Richard Henderson <rth@tamu.edu>
+ * Based on original work by Bjorn Ekwall <bj0rn@blox.se>
+ *
+ * Taken from Linux modutils 2.4.22.
+ */
%{
diff --git a/scripts/genksyms/parse.y b/scripts/genksyms/parse.y
index 1ebcf52cd0f9..e22b42245bcc 100644
--- a/scripts/genksyms/parse.y
+++ b/scripts/genksyms/parse.y
@@ -1,25 +1,13 @@
-/* C global declaration parser for genksyms.
- Copyright 1996, 1997 Linux International.
-
- New implementation contributed by Richard Henderson <rth@tamu.edu>
- Based on original work by Bjorn Ekwall <bj0rn@blox.se>
-
- This file is part of the Linux modutils.
-
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2 of the License, or (at your
- option) any later version.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * C global declaration parser for genksyms.
+ * Copyright 1996, 1997 Linux International.
+ *
+ * New implementation contributed by Richard Henderson <rth@tamu.edu>
+ * Based on original work by Bjorn Ekwall <bj0rn@blox.se>
+ *
+ * This file is part of the Linux modutils.
+ */
%{
diff --git a/scripts/headers_install.sh b/scripts/headers_install.sh
index bbaf29386995..a07668a5c36b 100755
--- a/scripts/headers_install.sh
+++ b/scripts/headers_install.sh
@@ -41,5 +41,77 @@ sed -E -e '
scripts/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ $TMPFILE > $OUTFILE
[ $? -gt 1 ] && exit 1
+# Remove /* ... */ style comments, and find CONFIG_ references in code
+configs=$(sed -e '
+:comment
+ s:/\*[^*][^*]*:/*:
+ s:/\*\*\**\([^/]\):/*\1:
+ t comment
+ s:/\*\*/: :
+ t comment
+ /\/\*/! b check
+ N
+ b comment
+:print
+ P
+ D
+:check
+ s:^\(CONFIG_[[:alnum:]_]*\):\1\n:
+ t print
+ s:^[[:alnum:]_][[:alnum:]_]*::
+ s:^[^[:alnum:]_][^[:alnum:]_]*::
+ t check
+ d
+' $OUTFILE)
+
+# The entries in the following list are not warned.
+# Please do not add a new entry. This list is only for existing ones.
+# The list will be reduced gradually, and deleted eventually. (hopefully)
+#
+# The format is <file-name>:<CONFIG-option> in each line.
+config_leak_ignores="
+arch/alpha/include/uapi/asm/setup.h:CONFIG_ALPHA_LEGACY_START_ADDRESS
+arch/arc/include/uapi/asm/page.h:CONFIG_ARC_PAGE_SIZE_16K
+arch/arc/include/uapi/asm/page.h:CONFIG_ARC_PAGE_SIZE_4K
+arch/arc/include/uapi/asm/swab.h:CONFIG_ARC_HAS_SWAPE
+arch/arm/include/uapi/asm/ptrace.h:CONFIG_CPU_ENDIAN_BE8
+arch/hexagon/include/uapi/asm/ptrace.h:CONFIG_HEXAGON_ARCH_VERSION
+arch/hexagon/include/uapi/asm/user.h:CONFIG_HEXAGON_ARCH_VERSION
+arch/ia64/include/uapi/asm/cmpxchg.h:CONFIG_IA64_DEBUG_CMPXCHG
+arch/m68k/include/uapi/asm/ptrace.h:CONFIG_COLDFIRE
+arch/nios2/include/uapi/asm/swab.h:CONFIG_NIOS2_CI_SWAB_NO
+arch/nios2/include/uapi/asm/swab.h:CONFIG_NIOS2_CI_SWAB_SUPPORT
+arch/sh/include/uapi/asm/ptrace.h:CONFIG_CPU_SH5
+arch/sh/include/uapi/asm/sigcontext.h:CONFIG_CPU_SH5
+arch/sh/include/uapi/asm/stat.h:CONFIG_CPU_SH5
+arch/x86/include/uapi/asm/auxvec.h:CONFIG_IA32_EMULATION
+arch/x86/include/uapi/asm/auxvec.h:CONFIG_X86_64
+arch/x86/include/uapi/asm/mman.h:CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
+include/uapi/asm-generic/fcntl.h:CONFIG_64BIT
+include/uapi/linux/atmdev.h:CONFIG_COMPAT
+include/uapi/linux/elfcore.h:CONFIG_BINFMT_ELF_FDPIC
+include/uapi/linux/eventpoll.h:CONFIG_PM_SLEEP
+include/uapi/linux/hw_breakpoint.h:CONFIG_HAVE_MIXED_BREAKPOINTS_REGS
+include/uapi/linux/pktcdvd.h:CONFIG_CDROM_PKTCDVD_WCACHE
+include/uapi/linux/raw.h:CONFIG_MAX_RAW_DEVS
+"
+
+for c in $configs
+do
+ warn=1
+
+ for ignore in $config_leak_ignores
+ do
+ if echo "$INFILE:$c" | grep -q "$ignore$"; then
+ warn=
+ break
+ fi
+ done
+
+ if [ "$warn" = 1 ]; then
+ echo "warning: $INFILE: leak $c to user-space" >&2
+ fi
+done
+
rm -f $TMPFILE
trap - EXIT
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 7656e1137b6b..ef2f2336c469 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -114,7 +114,7 @@ testconfig: $(obj)/conf
$(PYTHON3) -B -m pytest $(srctree)/$(src)/tests \
-o cache_dir=$(abspath $(obj)/tests/.cache) \
$(if $(findstring 1,$(KBUILD_VERBOSE)),--capture=no)
-clean-dirs += tests/.cache
+clean-files += tests/.cache
# Help text used by make help
help:
@@ -166,15 +166,15 @@ $(obj)/nconf.o $(obj)/nconf.gui.o: $(obj)/nconf-cfg
# mconf: Used for the menuconfig target based on lxdialog
hostprogs-y += mconf
-lxdialog := checklist.o inputbox.o menubox.o textbox.o util.o yesno.o
-mconf-objs := mconf.o $(addprefix lxdialog/, $(lxdialog)) $(common-objs)
+lxdialog := $(addprefix lxdialog/, \
+ checklist.o inputbox.o menubox.o textbox.o util.o yesno.o)
+mconf-objs := mconf.o $(lxdialog) $(common-objs)
HOSTLDLIBS_mconf = $(shell . $(obj)/mconf-cfg && echo $$libs)
$(foreach f, mconf.o $(lxdialog), \
$(eval HOSTCFLAGS_$f = $$(shell . $(obj)/mconf-cfg && echo $$$$cflags)))
-$(obj)/mconf.o: $(obj)/mconf-cfg
-$(addprefix $(obj)/lxdialog/, $(lxdialog)): $(obj)/mconf-cfg
+$(addprefix $(obj)/, mconf.o $(lxdialog)): $(obj)/mconf-cfg
# qconf: Used for the xconfig target based on Qt
hostprogs-y += qconf
diff --git a/scripts/kconfig/merge_config.sh b/scripts/kconfig/merge_config.sh
index d924c51d28b7..63c8565206a4 100755
--- a/scripts/kconfig/merge_config.sh
+++ b/scripts/kconfig/merge_config.sh
@@ -13,12 +13,12 @@
# Copyright (c) 2009-2010 Wind River Systems, Inc.
# Copyright 2011 Linaro
+set -e
+
clean_up() {
rm -f $TMP_FILE
rm -f $MERGE_FILE
- exit
}
-trap clean_up HUP INT TERM
usage() {
echo "Usage: $0 [OPTIONS] [CONFIG [...]]"
@@ -110,6 +110,9 @@ TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)
MERGE_FILE=$(mktemp ./.merge_tmp.config.XXXXXXXXXX)
echo "Using $INITFILE as base"
+
+trap clean_up EXIT
+
cat $INITFILE > $TMP_FILE
# Merge files, printing warnings on overridden values
@@ -155,7 +158,6 @@ if [ "$RUNMAKE" = "false" ]; then
echo "#"
echo "# merged configuration written to $KCONFIG_CONFIG (needs make)"
echo "#"
- clean_up
exit
fi
@@ -177,7 +179,7 @@ make KCONFIG_ALLCONFIG=$TMP_FILE $OUTPUT_ARG $ALLTARGET
for CFG in $(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $TMP_FILE); do
REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
- ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG")
+ ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG" || true)
if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
echo "Value requested for $CFG not in final .config"
echo "Requested value: $REQUESTED_VAL"
@@ -185,5 +187,3 @@ for CFG in $(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $TMP_FILE); do
echo ""
fi
done
-
-clean_up
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 8c59970a09dc..06495379fcd8 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -64,6 +64,8 @@ vmlinux_link()
local output=${1}
local objects
+ info LD ${output}
+
# skip output file argument
shift
@@ -157,6 +159,18 @@ kallsyms()
${CC} ${aflags} -c -o ${2} ${afile}
}
+# Perform one step in kallsyms generation, including temporary linking of
+# vmlinux.
+kallsyms_step()
+{
+ kallsymso_prev=${kallsymso}
+ kallsymso=.tmp_kallsyms${1}.o
+ kallsyms_vmlinux=.tmp_vmlinux${1}
+
+ vmlinux_link ${kallsyms_vmlinux} "${kallsymso_prev}" ${btf_vmlinux_bin_o}
+ kallsyms ${kallsyms_vmlinux} ${kallsymso}
+}
+
# Create map file with all symbols from ${1}
# See mksymap for additional details
mksysmap()
@@ -243,6 +257,7 @@ if [ -n "${CONFIG_DEBUG_INFO_BTF}" ]; then
fi
kallsymso=""
+kallsymso_prev=""
kallsyms_vmlinux=""
if [ -n "${CONFIG_KALLSYMS}" ]; then
@@ -269,32 +284,19 @@ if [ -n "${CONFIG_KALLSYMS}" ]; then
# a) Verify that the System.map from vmlinux matches the map from
# ${kallsymso}.
- kallsymso=.tmp_kallsyms2.o
- kallsyms_vmlinux=.tmp_vmlinux2
-
- # step 1
- vmlinux_link .tmp_vmlinux1 ${btf_vmlinux_bin_o}
- kallsyms .tmp_vmlinux1 .tmp_kallsyms1.o
-
- # step 2
- vmlinux_link .tmp_vmlinux2 .tmp_kallsyms1.o ${btf_vmlinux_bin_o}
- kallsyms .tmp_vmlinux2 .tmp_kallsyms2.o
+ kallsyms_step 1
+ kallsyms_step 2
# step 3
- size1=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" .tmp_kallsyms1.o)
- size2=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" .tmp_kallsyms2.o)
+ size1=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" ${kallsymso_prev})
+ size2=$(${CONFIG_SHELL} "${srctree}/scripts/file-size.sh" ${kallsymso})
if [ $size1 -ne $size2 ] || [ -n "${KALLSYMS_EXTRA_PASS}" ]; then
- kallsymso=.tmp_kallsyms3.o
- kallsyms_vmlinux=.tmp_vmlinux3
-
- vmlinux_link .tmp_vmlinux3 .tmp_kallsyms2.o ${btf_vmlinux_bin_o}
- kallsyms .tmp_vmlinux3 .tmp_kallsyms3.o
+ kallsyms_step 3
fi
fi
-info LD vmlinux
-vmlinux_link vmlinux "${kallsymso}" "${btf_vmlinux_bin_o}"
+vmlinux_link vmlinux "${kallsymso}" ${btf_vmlinux_bin_o}
if [ -n "${CONFIG_BUILDTIME_EXTABLE_SORT}" ]; then
info SORTEX vmlinux
diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
index 2339f86126cb..d1d757c6edf4 100755
--- a/scripts/mkcompile_h
+++ b/scripts/mkcompile_h
@@ -5,7 +5,8 @@ TARGET=$1
ARCH=$2
SMP=$3
PREEMPT=$4
-CC=$5
+PREEMPT_RT=$5
+CC=$6
vecho() { [ "${quiet}" = "silent_" ] || echo "$@" ; }
@@ -53,6 +54,7 @@ UTS_VERSION="#$VERSION"
CONFIG_FLAGS=""
if [ -n "$SMP" ] ; then CONFIG_FLAGS="SMP"; fi
if [ -n "$PREEMPT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT"; fi
+if [ -n "$PREEMPT_RT" ] ; then CONFIG_FLAGS="$CONFIG_FLAGS PREEMPT_RT"; fi
UTS_VERSION="$UTS_VERSION $CONFIG_FLAGS $TIMESTAMP"
# Truncate to maximum length
diff --git a/scripts/mkmakefile b/scripts/mkmakefile
index 4d0faebb1719..1cb174751429 100755
--- a/scripts/mkmakefile
+++ b/scripts/mkmakefile
@@ -12,6 +12,6 @@ if [ "${quiet}" != "silent_" ]; then
fi
cat << EOF > Makefile
-# Automatically generated by $(realpath $0): don't edit
-include $(realpath $1/Makefile)
+# Automatically generated by $0: don't edit
+include $1/Makefile
EOF
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index e17a29ae2e97..c91eba751804 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -36,6 +36,11 @@ typedef uint16_t __u16;
typedef unsigned char __u8;
typedef struct {
__u8 b[16];
+} guid_t;
+
+/* backwards compatibility, don't use in new code */
+typedef struct {
+ __u8 b[16];
} uuid_le;
typedef struct {
__u8 b[16];
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index f277e116e0eb..820eed87fb43 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -169,6 +169,7 @@ struct symbol {
unsigned int kernel:1; /* 1 if symbol is from kernel
* (only for external modules) **/
unsigned int preloaded:1; /* 1 if symbol from Module.symvers, or crc */
+ unsigned int is_static:1; /* 1 if symbol is not global */
enum export export; /* Type of export */
char name[0];
};
@@ -201,6 +202,7 @@ static struct symbol *alloc_symbol(const char *name, unsigned int weak,
strcpy(s->name, name);
s->weak = weak;
s->next = next;
+ s->is_static = 1;
return s;
}
@@ -795,9 +797,9 @@ static int match(const char *sym, const char * const pat[])
/* "*foo*" */
if (*p == '*' && *endp == '*') {
- char *here, *bare = strndup(p + 1, strlen(p) - 2);
+ char *bare = NOFAIL(strndup(p + 1, strlen(p) - 2));
+ char *here = strstr(sym, bare);
- here = strstr(sym, bare);
free(bare);
if (here != NULL)
return 1;
@@ -1980,6 +1982,21 @@ static void read_symbols(const char *modname)
handle_modversions(mod, &info, sym, symname);
handle_moddevtable(mod, &info, sym, symname);
}
+
+ // check for static EXPORT_SYMBOL_* functions && global vars
+ for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {
+ unsigned char bind = ELF_ST_BIND(sym->st_info);
+
+ if (bind == STB_GLOBAL || bind == STB_WEAK) {
+ struct symbol *s =
+ find_symbol(remove_dot(info.strtab +
+ sym->st_name));
+
+ if (s)
+ s->is_static = 0;
+ }
+ }
+
if (!is_vmlinux(modname) || vmlinux_section_warnings)
check_sec_ref(mod, modname, &info);
@@ -2159,7 +2176,7 @@ static void add_header(struct buffer *b, struct module *mod)
buf_printf(b, "MODULE_INFO(name, KBUILD_MODNAME);\n");
buf_printf(b, "\n");
buf_printf(b, "__visible struct module __this_module\n");
- buf_printf(b, "__attribute__((section(\".gnu.linkonce.this_module\"))) = {\n");
+ buf_printf(b, "__section(.gnu.linkonce.this_module) = {\n");
buf_printf(b, "\t.name = KBUILD_MODNAME,\n");
if (mod->has_init)
buf_printf(b, "\t.init = init_module,\n");
@@ -2213,8 +2230,7 @@ static int add_versions(struct buffer *b, struct module *mod)
buf_printf(b, "\n");
buf_printf(b, "static const struct modversion_info ____versions[]\n");
- buf_printf(b, "__used\n");
- buf_printf(b, "__attribute__((section(\"__versions\"))) = {\n");
+ buf_printf(b, "__used __section(__versions) = {\n");
for (s = mod->unres; s; s = s->next) {
if (!s->module)
@@ -2250,10 +2266,7 @@ static void add_depends(struct buffer *b, struct module *mod)
s->module->seen = is_vmlinux(s->module->name);
buf_printf(b, "\n");
- buf_printf(b, "static const char __module_depends[]\n");
- buf_printf(b, "__used\n");
- buf_printf(b, "__attribute__((section(\".modinfo\"))) =\n");
- buf_printf(b, "\"depends=");
+ buf_printf(b, "MODULE_INFO(depends, \"");
for (s = mod->unres; s; s = s->next) {
const char *p;
if (!s->module)
@@ -2271,7 +2284,7 @@ static void add_depends(struct buffer *b, struct module *mod)
buf_printf(b, "%s%s", first ? "" : ",", p);
first = 0;
}
- buf_printf(b, "\";\n");
+ buf_printf(b, "\");\n");
}
static void add_srcversion(struct buffer *b, struct module *mod)
@@ -2369,6 +2382,7 @@ static void read_dump(const char *fname, unsigned int kernel)
s = sym_add_exported(symname, mod, export_no(export));
s->kernel = kernel;
s->preloaded = 1;
+ s->is_static = 0;
sym_update_crc(symname, mod, crc, export_no(export));
}
release_file(file, size);
@@ -2425,6 +2439,7 @@ int main(int argc, char **argv)
char *dump_write = NULL, *files_source = NULL;
int opt;
int err;
+ int n;
struct ext_sym_list *extsym_iter;
struct ext_sym_list *extsym_start = NULL;
@@ -2520,6 +2535,19 @@ int main(int argc, char **argv)
if (sec_mismatch_count && sec_mismatch_fatal)
fatal("modpost: Section mismatches detected.\n"
"Set CONFIG_SECTION_MISMATCH_WARN_ONLY=y to allow them.\n");
+ for (n = 0; n < SYMBOL_HASH_SIZE; n++) {
+ struct symbol *s = symbolhash[n];
+
+ while (s) {
+ if (s->is_static)
+ warn("\"%s\" [%s] is a static %s\n",
+ s->name, s->module->name,
+ export_str(s->export));
+
+ s = s->next;
+ }
+ }
+
free(buf.p);
return err;