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88a4280e01
CONFIG_KASAN_KUNIT_TEST is a kernel specific build option, so expose it via the arch config.h instead of the tools-generated lkl_autoconf.h. Both LKL_HOST_CONFIG_KASAN and LKL_HOST_CONFIG_KASAN_KUNIT_TEST are now unused so can be removed. Signed-off-by: David Disseldorp <ddiss@suse.de>
107 lines
3.4 KiB
Makefile
107 lines
3.4 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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KBUILD_CFLAGS += -fno-builtin
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exec_format = $(firstword $(subst -, ,$(CONFIG_OUTPUT_FORMAT)))
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ifneq (,$(filter elf64 elf32,$(exec_format)))
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KBUILD_CFLAGS += -fPIC
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else ifneq (,$(filter pe,$(exec_format)))
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ifneq ($(CONFIG_OUTPUT_FORMAT),pe-x86-64)
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prefix=_
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KBUILD_CFLAGS += -fno-leading-underscore
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endif
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# workaround for #include_next<stdarg.h> errors
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LINUXINCLUDE := -isystem arch/lkl/include/system $(LINUXINCLUDE)
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# workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52991
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KBUILD_CFLAGS += -mno-ms-bitfields -D__DISABLE_EXPORTS
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else ifneq (,$(CONFIG_OUTPUT_FORMAT))
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$(error Unrecognized platform: $(CONFIG_OUTPUT_FORMAT))
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endif
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ifeq ($(shell uname -s), Linux)
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NPROC=$(shell nproc)
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else ifneq ($(shell uname -s | grep MSYS),)
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NPROC=${NUMBER_OF_PROCESSORS}
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else # e.g., FreeBSD
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NPROC=$(shell sysctl -n hw.ncpu)
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endif
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ifdef CONFIG_CC_IS_CLANG
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# LKL fuzzing is based on libFuzzer which depends on clang compiler.
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ifdef CONFIG_LKL_FUZZING
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# This makes sure assembly code is compiled with clang's integerated assembler
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# so the result object files are compatible with the fuzzing flag.
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KBUILD_CFLAGS += -integrated-as
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# We want debug symbols for fuzzing (e.g. better stack trace in gdb).
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KBUILD_CFLAGS += -g
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# Enabling libfuzzer instrumentation
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KBUILD_CFLAGS += -fsanitize=fuzzer-no-link
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KEEP_EH_FRAMES := true
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endif
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# This flag enables clang's extra instrumentation for visualizing line coverage.
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ifdef CONFIG_LKL_LINE_COV
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KBUILD_CFLAGS += -fprofile-instr-generate -fcoverage-mapping
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endif
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endif
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LDFLAGS_vmlinux += -r
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LKL_ENTRY_POINTS := lkl_start_kernel lkl_sys_halt lkl_syscall lkl_trigger_irq \
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lkl_get_free_irq lkl_put_irq lkl_is_running lkl_bug lkl_printf \
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lkl_init lkl_cleanup
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ifeq ($(CONFIG_OUTPUT_FORMAT),elf32-i386)
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LKL_ENTRY_POINTS += \
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__x86.get_pc_thunk.bx __x86.get_pc_thunk.dx __x86.get_pc_thunk.ax \
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__x86.get_pc_thunk.cx __x86.get_pc_thunk.si __x86.get_pc_thunk.di
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endif
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core-y += arch/lkl/kernel/
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core-y += arch/lkl/lib/
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core-y += arch/lkl/mm/
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core-y += arch/lkl/drivers/
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configh-y = printf "/* this header is autogenerated */\n"
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configh-$(CONFIG_64BIT) += && printf '\#define LKL_CONFIG_64BIT 1\n'
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configh-$(CONFIG_CPU_BIG_ENDIAN) += && printf '\#define LKL_CONFIG_CPU_BIG_ENDIAN 1\n'
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configh-$(CONFIG_KASAN_KUNIT_TEST) += && printf '\#define LKL_CONFIG_KASAN_KUNIT_TEST 1\n'
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quiet_cmd_gen_configh = GEN $@
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cmd_gen_configh = mkdir -p $(dir $@); ($(configh-y)) > $@
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targets += arch/lkl/include/generated/uapi/asm/config.h
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arch/lkl/include/generated/uapi/asm/config.h: FORCE
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$(call if_changed,gen_configh)
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archprepare: arch/lkl/include/generated/uapi/asm/config.h
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all: lkl.o arch/lkl/include/generated/uapi/asm/syscall_defs.h
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lkl.o: vmlinux
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$(OBJCOPY) $(if $(KEEP_EH_FRAMES),,-R .eh_frame) -R .syscall_defs $(foreach sym,$(LKL_ENTRY_POINTS),-G$(prefix)$(sym)) --prefix-symbols=$(prefix) vmlinux lkl.o
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arch/lkl/include/generated/uapi/asm/syscall_defs.h: vmlinux
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$(OBJCOPY) -j .syscall_defs -O binary --set-section-flags .syscall_defs=alloc $< $@
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$(Q) export tmpfile=$(shell mktemp); \
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sed 's/\x0//g' $@ > $$tmpfile; mv $$tmpfile $@ ; rm -f $$tmpfile
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install: scripts_unifdef
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@echo " INSTALL $(INSTALL_PATH)/lib/lkl.o"
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@mkdir -p $(INSTALL_PATH)/lib/
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@cp lkl.o $(INSTALL_PATH)/lib/
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@$(srctree)/arch/lkl/scripts/headers_install.py \
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$(subst -j,-j$(NPROC),$(findstring -j,$(MAKEFLAGS))) \
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$(INSTALL_PATH)/include
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define archhelp
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echo ' install - Install library and headers to INSTALL_PATH/{lib,include}'
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endef
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