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d8633a32f2
Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: a.p.zijlstra@chello.nl Link: http://lkml.kernel.org/r/20170525130005.5947-16-alexander.levin@verizon.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
162 lines
4.1 KiB
Makefile
162 lines
4.1 KiB
Makefile
# file format version
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FILE_VERSION = 1
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LIBLOCKDEP_VERSION=$(shell make --no-print-directory -sC ../../.. kernelversion)
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# Makefiles suck: This macro sets a default value of $(2) for the
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# variable named by $(1), unless the variable has been set by
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# environment or command line. This is necessary for CC and AR
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# because make sets default values, so the simpler ?= approach
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# won't work as expected.
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define allow-override
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$(if $(or $(findstring environment,$(origin $(1))),\
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$(findstring command line,$(origin $(1)))),,\
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$(eval $(1) = $(2)))
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endef
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# Allow setting CC and AR and LD, or setting CROSS_COMPILE as a prefix.
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$(call allow-override,CC,$(CROSS_COMPILE)gcc)
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$(call allow-override,AR,$(CROSS_COMPILE)ar)
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$(call allow-override,LD,$(CROSS_COMPILE)ld)
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INSTALL = install
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# Use DESTDIR for installing into a different root directory.
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# This is useful for building a package. The program will be
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# installed in this directory as if it was the root directory.
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# Then the build tool can move it later.
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DESTDIR ?=
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DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
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prefix ?= /usr/local
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libdir_relative = lib
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libdir = $(prefix)/$(libdir_relative)
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bindir_relative = bin
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bindir = $(prefix)/$(bindir_relative)
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export DESTDIR DESTDIR_SQ INSTALL
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MAKEFLAGS += --no-print-directory
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include ../../scripts/Makefile.include
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# copy a bit from Linux kbuild
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ifeq ("$(origin V)", "command line")
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VERBOSE = $(V)
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endif
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ifndef VERBOSE
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VERBOSE = 0
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endif
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ifeq ($(srctree),)
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srctree := $(patsubst %/,%,$(dir $(CURDIR)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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#$(info Determined 'srctree' to be $(srctree))
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endif
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# Shell quotes
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libdir_SQ = $(subst ','\'',$(libdir))
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bindir_SQ = $(subst ','\'',$(bindir))
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LIB_IN := $(OUTPUT)liblockdep-in.o
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BIN_FILE = lockdep
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LIB_FILE = $(OUTPUT)liblockdep.a $(OUTPUT)liblockdep.so.$(LIBLOCKDEP_VERSION)
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CONFIG_INCLUDES =
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CONFIG_LIBS =
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CONFIG_FLAGS =
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OBJ = $@
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N =
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export Q VERBOSE
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INCLUDES = -I. -I./uinclude -I./include -I../../include $(CONFIG_INCLUDES)
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# Set compile option CFLAGS if not set elsewhere
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CFLAGS ?= -g -DCONFIG_LOCKDEP -DCONFIG_STACKTRACE -DCONFIG_PROVE_LOCKING -DBITS_PER_LONG=__WORDSIZE -DLIBLOCKDEP_VERSION='"$(LIBLOCKDEP_VERSION)"' -rdynamic -O0 -g
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CFLAGS += -fPIC
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CFLAGS += -Wall
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override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ)
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ifeq ($(VERBOSE),1)
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Q =
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print_shared_lib_compile =
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print_install =
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else
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Q = @
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print_shared_lib_compile = echo ' LD '$(OBJ);
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print_static_lib_build = echo ' LD '$(OBJ);
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print_install = echo ' INSTALL '$1' to $(DESTDIR_SQ)$2';
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endif
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all:
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export srctree OUTPUT CC LD CFLAGS V
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include $(srctree)/tools/build/Makefile.include
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do_compile_shared_library = \
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($(print_shared_lib_compile) \
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$(CC) $(LDFLAGS) --shared $^ -o $@ -lpthread -ldl -Wl,-soname='$(@F)';$(shell ln -sf $(@F) $(@D)/liblockdep.so))
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do_build_static_lib = \
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($(print_static_lib_build) \
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$(RM) $@; $(AR) rcs $@ $^)
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CMD_TARGETS = $(LIB_FILE)
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TARGETS = $(CMD_TARGETS)
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all: fixdep all_cmd
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all_cmd: $(CMD_TARGETS)
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$(LIB_IN): force
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$(Q)$(MAKE) $(build)=liblockdep
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$(OUTPUT)liblockdep.so.$(LIBLOCKDEP_VERSION): $(LIB_IN)
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$(Q)$(do_compile_shared_library)
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$(OUTPUT)liblockdep.a: $(LIB_IN)
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$(Q)$(do_build_static_lib)
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tags: force
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$(RM) tags
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find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \
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--regex-c++='/_PE\(([^,)]*).*/PEVENT_ERRNO__\1/'
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TAGS: force
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$(RM) TAGS
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find . -name '*.[ch]' | xargs etags \
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--regex='/_PE(\([^,)]*\).*/PEVENT_ERRNO__\1/'
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define do_install
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$(print_install) \
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if [ ! -d '$(DESTDIR_SQ)$2' ]; then \
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$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$2'; \
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fi; \
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$(INSTALL) $1 '$(DESTDIR_SQ)$2'
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endef
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install_lib: all_cmd
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$(Q)$(call do_install,$(LIB_FILE),$(libdir_SQ))
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$(Q)$(call do_install,$(BIN_FILE),$(bindir_SQ))
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install: install_lib
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clean:
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$(RM) $(OUTPUT)*.o *~ $(TARGETS) $(OUTPUT)*.a $(OUTPUT)*liblockdep*.so* $(VERSION_FILES) $(OUTPUT).*.d $(OUTPUT).*.cmd
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$(RM) tags TAGS
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PHONY += force
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force:
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# Declare the contents of the .PHONY variable as phony. We keep that
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# information in a variable so we can use it in if_changed and friends.
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.PHONY: $(PHONY)
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