a2bc8dea9e
- Use Make-builtin $(abspath ...) helper to get absolute path - Add W=2 extra warning option to detect unused macros - Use more KCONFIG_CONFIG instead hard-coded .config - Fix bugs of tar*-pkg targets -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJZupWLAAoJED2LAQed4NsGVEEQAItJ0y1uxDr0cjJNE46N6p6+ EMCWKWC2H0XR9oFRY1y5utYWIwRauIaESgGg1qMU6Lbg5qZamggpNrYVH207tCz1 gNkU8wwc2SXpxJy2eG2asxY9L2mL0a5fFFOgxIxoz+hCTgr4Yk1IGnTH9+GPQKtW thduXxTvcB4/oNTOgUHNj/7j9ydn7ETTOjsCoaEwBZqtBaaEBj20h6EOhgX+ouMd 5P9YoCbfk28KHKlnMd8sNHV5SLKb94wCwoM/QIOLl42rwIAc81dUgOmaMGeflXF9 zBH1exi4ID9SyQyuMZemJNe0bD6YR2qG0Sf1t2eDnhxmcav7Vwk+WV7Pdpr8UWw8 Lot9yPJQA43kfYj6pfCJFXzWEduNT48zGGBJb30WyGkBkidNNGkujdSeI36swEQD fPV9tHPk48OSNPqJWZXehezBqN9U5Sa1M9dk5TNA69mzdZgNp052flxywBQ/SGTO +h17SREP9Mm6CQ9ApfHaOlMr40/mpCCDq+p8pfem5ZtnBby9k4uNp2P9hAMTJdw8 5AOdwB0MdzvMQgF5UO0kklk6HGUZTAGHi91k5k3e+DPydt9+2ntZFZoVwVYaD756 E55KKrQZqSO758gnN9Wbr8ihgOhNI3ZA320nCjfwQdnUqQ496KAkLpgVALF8pEVi /xIBawfQNj9BlDc3Y3jo =Tam1 -----END PGP SIGNATURE----- Merge tag 'kbuild-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Use Make-builtin $(abspath ...) helper to get absolute path - Add W=2 extra warning option to detect unused macros - Use more KCONFIG_CONFIG instead hard-coded .config - Fix bugs of tar*-pkg targets * tag 'kbuild-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: buildtar: do not print successful message if tar returns error kbuild: buildtar: fix tar error when CONFIG_MODULES is disabled kbuild: Use KCONFIG_CONFIG in buildtar Kbuild: enable -Wunused-macros warning for "make W=2" kbuild: use $(abspath ...) instead of $(shell cd ... && /bin/pwd)
103 lines
2.9 KiB
Makefile
103 lines
2.9 KiB
Makefile
ifneq ($(O),)
|
|
ifeq ($(origin O), command line)
|
|
ABSOLUTE_O := $(realpath $(O))
|
|
dummy := $(if $(ABSOLUTE_O),,$(error O=$(O) does not exist))
|
|
OUTPUT := $(ABSOLUTE_O)/$(if $(subdir),$(subdir)/)
|
|
COMMAND_O := O=$(ABSOLUTE_O)
|
|
ifeq ($(objtree),)
|
|
objtree := $(O)
|
|
endif
|
|
endif
|
|
endif
|
|
|
|
# check that the output directory actually exists
|
|
ifneq ($(OUTPUT),)
|
|
OUTDIR := $(realpath $(OUTPUT))
|
|
$(if $(OUTDIR),, $(error output directory "$(OUTPUT)" does not exist))
|
|
endif
|
|
|
|
#
|
|
# Include saner warnings here, which can catch bugs:
|
|
#
|
|
EXTRA_WARNINGS := -Wbad-function-cast
|
|
EXTRA_WARNINGS += -Wdeclaration-after-statement
|
|
EXTRA_WARNINGS += -Wformat-security
|
|
EXTRA_WARNINGS += -Wformat-y2k
|
|
EXTRA_WARNINGS += -Winit-self
|
|
EXTRA_WARNINGS += -Wmissing-declarations
|
|
EXTRA_WARNINGS += -Wmissing-prototypes
|
|
EXTRA_WARNINGS += -Wnested-externs
|
|
EXTRA_WARNINGS += -Wno-system-headers
|
|
EXTRA_WARNINGS += -Wold-style-definition
|
|
EXTRA_WARNINGS += -Wpacked
|
|
EXTRA_WARNINGS += -Wredundant-decls
|
|
EXTRA_WARNINGS += -Wshadow
|
|
EXTRA_WARNINGS += -Wstrict-prototypes
|
|
EXTRA_WARNINGS += -Wswitch-default
|
|
EXTRA_WARNINGS += -Wswitch-enum
|
|
EXTRA_WARNINGS += -Wundef
|
|
EXTRA_WARNINGS += -Wwrite-strings
|
|
EXTRA_WARNINGS += -Wformat
|
|
|
|
CC_NO_CLANG := $(shell $(CC) -dM -E -x c /dev/null | grep -Fq "__clang__"; echo $$?)
|
|
|
|
ifeq ($(CC_NO_CLANG), 1)
|
|
EXTRA_WARNINGS += -Wstrict-aliasing=3
|
|
endif
|
|
|
|
# Hack to avoid type-punned warnings on old systems such as RHEL5:
|
|
# We should be changing CFLAGS and checking gcc version, but this
|
|
# will do for now and keep the above -Wstrict-aliasing=3 in place
|
|
# in newer systems.
|
|
# Needed for the __raw_cmpxchg in tools/arch/x86/include/asm/cmpxchg.h
|
|
ifneq ($(filter 3.%,$(MAKE_VERSION)),) # make-3
|
|
EXTRA_WARNINGS += -fno-strict-aliasing
|
|
endif
|
|
|
|
ifneq ($(findstring $(MAKEFLAGS), w),w)
|
|
PRINT_DIR = --no-print-directory
|
|
else
|
|
NO_SUBDIR = :
|
|
endif
|
|
|
|
ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),)
|
|
silent=1
|
|
endif
|
|
|
|
#
|
|
# Define a callable command for descending to a new directory
|
|
#
|
|
# Call by doing: $(call descend,directory[,target])
|
|
#
|
|
descend = \
|
|
+mkdir -p $(OUTPUT)$(1) && \
|
|
$(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1) $(2)
|
|
|
|
QUIET_SUBDIR0 = +$(MAKE) $(COMMAND_O) -C # space to separate -C and subdir
|
|
QUIET_SUBDIR1 =
|
|
|
|
ifneq ($(silent),1)
|
|
ifneq ($(V),1)
|
|
QUIET_CC = @echo ' CC '$@;
|
|
QUIET_CC_FPIC = @echo ' CC FPIC '$@;
|
|
QUIET_AR = @echo ' AR '$@;
|
|
QUIET_LINK = @echo ' LINK '$@;
|
|
QUIET_MKDIR = @echo ' MKDIR '$@;
|
|
QUIET_GEN = @echo ' GEN '$@;
|
|
QUIET_SUBDIR0 = +@subdir=
|
|
QUIET_SUBDIR1 = ;$(NO_SUBDIR) \
|
|
echo ' SUBDIR '$$subdir; \
|
|
$(MAKE) $(PRINT_DIR) -C $$subdir
|
|
QUIET_FLEX = @echo ' FLEX '$@;
|
|
QUIET_BISON = @echo ' BISON '$@;
|
|
|
|
descend = \
|
|
+@echo ' DESCEND '$(1); \
|
|
mkdir -p $(OUTPUT)$(1) && \
|
|
$(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1) $(2)
|
|
|
|
QUIET_CLEAN = @printf ' CLEAN %s\n' $1;
|
|
QUIET_INSTALL = @printf ' INSTALL %s\n' $1;
|
|
endif
|
|
endif
|