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If BUILD_SRC or CURDIR contains tailing '/', the file names passed to gcc will contain '//'. It will be contained .o's in debuginfo, then confuse debugedit: https://bugzilla.redhat.com/show_bug.cgi?id=304121 This patch uses realpath command to makesure potential tailing '/'s are removed. Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Geng Hui <hui.geng@huawei.com> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
252 lines
5.7 KiB
Makefile
252 lines
5.7 KiB
Makefile
# liblockdep version
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LL_VERSION = 0
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LL_PATCHLEVEL = 0
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LL_EXTRAVERSION = 1
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# file format version
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FILE_VERSION = 1
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MAKEFLAGS += --no-print-directory
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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) = $(2)))
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endef
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# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix.
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$(call allow-override,CC,$(CROSS_COMPILE)gcc)
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$(call allow-override,AR,$(CROSS_COMPILE)ar)
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INSTALL = install
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# Use DESTDIR for installing into a different root directory.
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# This is useful for building a package. The program will be
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# installed in this directory as if it was the root directory.
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# Then the build tool can move it later.
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DESTDIR ?=
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DESTDIR_SQ = '$(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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# copy a bit from Linux kbuild
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ifeq ("$(origin V)", "command line")
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VERBOSE = $(V)
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endif
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ifndef VERBOSE
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VERBOSE = 0
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endif
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ifeq ("$(origin O)", "command line")
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BUILD_OUTPUT := $(O)
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endif
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ifeq ($(BUILD_SRC),)
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ifneq ($(BUILD_OUTPUT),)
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define build_output
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$(if $(VERBOSE:1=),@)$(MAKE) -C $(BUILD_OUTPUT) \
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BUILD_SRC=$(CURDIR) -f $(CURDIR)/Makefile $1
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endef
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saved-output := $(BUILD_OUTPUT)
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BUILD_OUTPUT := $(shell cd $(BUILD_OUTPUT) && /bin/pwd)
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$(if $(BUILD_OUTPUT),, \
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$(error output directory "$(saved-output)" does not exist))
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all: sub-make
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gui: force
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$(call build_output, all_cmd)
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$(filter-out gui,$(MAKECMDGOALS)): sub-make
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sub-make: force
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$(call build_output, $(MAKECMDGOALS))
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# Leave processing to above invocation of make
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skip-makefile := 1
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endif # BUILD_OUTPUT
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endif # BUILD_SRC
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# We process the rest of the Makefile if this is the final invocation of make
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ifeq ($(skip-makefile),)
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srctree := $(realpath $(if $(BUILD_SRC),$(BUILD_SRC),$(CURDIR)))
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objtree := $(realpath $(CURDIR))
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src := $(srctree)
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obj := $(objtree)
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export prefix libdir bindir src obj
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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_FILE = liblockdep.a liblockdep.so
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BIN_FILE = lockdep
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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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LIBLOCKDEP_VERSION = $(LL_VERSION).$(LL_PATCHLEVEL).$(LL_EXTRAVERSION)
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INCLUDES = -I. -I/usr/local/include -I./uinclude -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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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_compile =
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print_app_build =
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print_fpic_compile =
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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_compile = echo ' CC '$(OBJ);
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print_app_build = echo ' BUILD '$(OBJ);
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print_fpic_compile = echo ' CC FPIC '$(OBJ);
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print_shared_lib_compile = echo ' BUILD SHARED LIB '$(OBJ);
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print_static_lib_build = echo ' BUILD STATIC LIB '$(OBJ);
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print_install = echo ' INSTALL '$1' to $(DESTDIR_SQ)$2';
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endif
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do_fpic_compile = \
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($(print_fpic_compile) \
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$(CC) -c $(CFLAGS) $(EXT) -fPIC $< -o $@)
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do_app_build = \
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($(print_app_build) \
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$(CC) $^ -rdynamic -o $@ $(CONFIG_LIBS) $(LIBS))
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do_compile_shared_library = \
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($(print_shared_lib_compile) \
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$(CC) --shared $^ -o $@ -lpthread -ldl)
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do_build_static_lib = \
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($(print_static_lib_build) \
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$(RM) $@; $(AR) rcs $@ $^)
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define do_compile
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$(print_compile) \
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$(CC) -c $(CFLAGS) $(EXT) $< -o $(obj)/$@;
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endef
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$(obj)/%.o: $(src)/%.c
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$(Q)$(call do_compile)
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%.o: $(src)/%.c
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$(Q)$(call do_compile)
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PEVENT_LIB_OBJS = common.o lockdep.o preload.o rbtree.o
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ALL_OBJS = $(PEVENT_LIB_OBJS)
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CMD_TARGETS = $(LIB_FILE)
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TARGETS = $(CMD_TARGETS)
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all: all_cmd
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all_cmd: $(CMD_TARGETS)
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liblockdep.so: $(PEVENT_LIB_OBJS)
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$(Q)$(do_compile_shared_library)
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liblockdep.a: $(PEVENT_LIB_OBJS)
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$(Q)$(do_build_static_lib)
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$(PEVENT_LIB_OBJS): %.o: $(src)/%.c
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$(Q)$(do_fpic_compile)
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## make deps
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all_objs := $(sort $(ALL_OBJS))
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all_deps := $(all_objs:%.o=.%.d)
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# let .d file also depends on the source and header files
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define check_deps
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@set -e; $(RM) $@; \
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$(CC) -MM $(CFLAGS) $< > $@.$$$$; \
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sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
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$(RM) $@.$$$$
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endef
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$(all_deps): .%.d: $(src)/%.c
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$(Q)$(call check_deps)
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$(all_objs) : %.o : .%.d
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dep_includes := $(wildcard $(all_deps))
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ifneq ($(dep_includes),)
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include $(dep_includes)
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endif
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### Detect environment changes
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TRACK_CFLAGS = $(subst ','\'',$(CFLAGS)):$(ARCH):$(CROSS_COMPILE)
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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) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d
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$(RM) tags TAGS
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endif # skip-makefile
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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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