d7b0827f28
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 $(BASH) to run scripts with bash-extension
kbuild: remove ARCH_{CPP,A,C}FLAGS
kbuild,arc: add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 for ARC
kbuild: Do not enable -Wimplicit-fallthrough for clang for now
kbuild: clean up subdir-ymn calculation in Makefile.clean
kbuild: remove unneeded '+' marker from cmd_clean
kbuild: remove clean-dirs syntax
kbuild: check clean srctree even earlier
...
96 lines
2.5 KiB
Makefile
96 lines
2.5 KiB
Makefile
# This file is included by the global makefile so that you can add your own
|
|
# architecture-specific flags and dependencies. Remember to do have actions
|
|
# for "archclean" and "archdep" for cleaning up and making dependencies for
|
|
# this architecture
|
|
#
|
|
# This file is subject to the terms and conditions of the GNU General Public
|
|
# License. See the file "COPYING" in the main directory of this archive
|
|
# for more details.
|
|
#
|
|
|
|
OBJCOPYFLAGS := -O binary
|
|
LDFLAGS_vmlinux :=
|
|
ifeq ($(CONFIG_DYNAMIC_FTRACE),y)
|
|
LDFLAGS_vmlinux := --no-relax
|
|
endif
|
|
KBUILD_AFLAGS_MODULE += -fPIC
|
|
KBUILD_CFLAGS_MODULE += -fPIC
|
|
|
|
export BITS
|
|
ifeq ($(CONFIG_ARCH_RV64I),y)
|
|
BITS := 64
|
|
UTS_MACHINE := riscv64
|
|
|
|
KBUILD_CFLAGS += -mabi=lp64
|
|
KBUILD_AFLAGS += -mabi=lp64
|
|
|
|
KBUILD_LDFLAGS += -melf64lriscv
|
|
else
|
|
BITS := 32
|
|
UTS_MACHINE := riscv32
|
|
|
|
KBUILD_CFLAGS += -mabi=ilp32
|
|
KBUILD_AFLAGS += -mabi=ilp32
|
|
KBUILD_LDFLAGS += -melf32lriscv
|
|
endif
|
|
|
|
# ISA string setting
|
|
riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima
|
|
riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima
|
|
riscv-march-$(CONFIG_FPU) := $(riscv-march-y)fd
|
|
riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c
|
|
KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y))
|
|
KBUILD_AFLAGS += -march=$(riscv-march-y)
|
|
|
|
KBUILD_CFLAGS += -mno-save-restore
|
|
KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET)
|
|
|
|
ifeq ($(CONFIG_CMODEL_MEDLOW),y)
|
|
KBUILD_CFLAGS += -mcmodel=medlow
|
|
endif
|
|
ifeq ($(CONFIG_CMODEL_MEDANY),y)
|
|
KBUILD_CFLAGS += -mcmodel=medany
|
|
endif
|
|
ifeq ($(CONFIG_MODULE_SECTIONS),y)
|
|
KBUILD_LDS_MODULE += $(srctree)/arch/riscv/kernel/module.lds
|
|
endif
|
|
ifeq ($(CONFIG_PERF_EVENTS),y)
|
|
KBUILD_CFLAGS += -fno-omit-frame-pointer
|
|
endif
|
|
|
|
KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax)
|
|
|
|
# GCC versions that support the "-mstrict-align" option default to allowing
|
|
# unaligned accesses. While unaligned accesses are explicitly allowed in the
|
|
# RISC-V ISA, they're emulated by machine mode traps on all extant
|
|
# architectures. It's faster to have GCC emit only aligned accesses.
|
|
KBUILD_CFLAGS += $(call cc-option,-mstrict-align)
|
|
|
|
# arch specific predefines for sparse
|
|
CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS)
|
|
|
|
# Default target when executing plain make
|
|
boot := arch/riscv/boot
|
|
KBUILD_IMAGE := $(boot)/Image.gz
|
|
|
|
head-y := arch/riscv/kernel/head.o
|
|
|
|
core-y += arch/riscv/
|
|
|
|
libs-y += arch/riscv/lib/
|
|
|
|
PHONY += vdso_install
|
|
vdso_install:
|
|
$(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@
|
|
|
|
all: Image.gz
|
|
|
|
Image: vmlinux
|
|
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
|
|
|
|
Image.%: Image
|
|
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
|
|
|
|
zinstall install:
|
|
$(Q)$(MAKE) $(build)=$(boot) $@
|