diff options
Diffstat (limited to 'arch/um/Makefile')
| -rw-r--r-- | arch/um/Makefile | 55 |
1 files changed, 31 insertions, 24 deletions
diff --git a/arch/um/Makefile b/arch/um/Makefile index 273130cf91d1..721b652ffb65 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -18,14 +18,9 @@ else endif ARCH_DIR := arch/um -OS := $(shell uname -s) # We require bash because the vmlinux link and loader script cpp use bash # features. -SHELL := /bin/bash - -core-y += $(ARCH_DIR)/kernel/ \ - $(ARCH_DIR)/drivers/ \ - $(ARCH_DIR)/os-$(OS)/ +SHELL := bash MODE_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include/shared/skas @@ -41,8 +36,8 @@ endif HOST_DIR := arch/$(HEADER_ARCH) -include $(ARCH_DIR)/Makefile-skas -include $(HOST_DIR)/Makefile.um +include $(srctree)/$(ARCH_DIR)/Makefile-skas +include $(srctree)/$(HOST_DIR)/Makefile.um core-y += $(HOST_DIR)/um/ @@ -51,32 +46,35 @@ ARCH_INCLUDE := -I$(srctree)/$(SHARED_HEADERS) ARCH_INCLUDE += -I$(srctree)/$(HOST_DIR)/um/shared KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/um -# -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so -# named - it's a common symbol in libpcap, so we get a binary which crashes. -# -# Same things for in6addr_loopback and mktime - found in libc. For these two we -# only get link-time error, luckily. +# -Dstrrchr=kernel_strrchr (as well as the various in6addr symbols) prevents +# anything from referencing +# libc symbols with the same name, which can cause a linker error. # # -Dlongjmp=kernel_longjmp prevents anything from referencing the libpthread.a # embedded copy of longjmp, same thing for setjmp. # -# These apply to USER_CFLAGS to. +# These apply to USER_CFLAGS too. KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ \ - $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \ + $(ARCH_INCLUDE) $(MODE_INCLUDE) \ -Dlongjmp=kernel_longjmp -Dsetjmp=kernel_setjmp \ -Din6addr_loopback=kernel_in6addr_loopback \ - -Din6addr_any=kernel_in6addr_any -Dstrrchr=kernel_strrchr + -Din6addr_any=kernel_in6addr_any -Dstrrchr=kernel_strrchr \ + -D__close_range=kernel__close_range + +KBUILD_RUSTFLAGS += -Crelocation-model=pie KBUILD_AFLAGS += $(ARCH_INCLUDE) USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -I%,,$(KBUILD_CFLAGS))) \ $(ARCH_INCLUDE) $(MODE_INCLUDE) $(filter -I%,$(CFLAGS)) \ -D_FILE_OFFSET_BITS=64 -idirafter $(srctree)/include \ - -idirafter $(obj)/include -D__KERNEL__ -D__UM_HOST__ + -idirafter $(objtree)/include -D__KERNEL__ -D__UM_HOST__ \ + -include $(srctree)/include/linux/compiler-version.h \ + -include $(srctree)/include/linux/kconfig.h #This will adjust *FLAGS accordingly to the platform. -include $(ARCH_DIR)/Makefile-os-$(OS) +include $(srctree)/$(ARCH_DIR)/Makefile-os-Linux KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/include \ -I$(srctree)/$(HOST_DIR)/include/uapi \ @@ -118,11 +116,11 @@ archprepare: $(Q)$(MAKE) $(build)=$(HOST_DIR)/um include/generated/user_constants.h LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static -LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib $(call cc-option, -no-pie) +LINK-$(CONFIG_LD_SCRIPT_DYN) += -no-pie +LINK-$(CONFIG_LD_SCRIPT_DYN_RPATH) += -Wl,-rpath,/lib CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \ - $(call cc-option, -fno-stack-protector,) \ - $(call cc-option, -fno-stack-protector-all,) + -fno-stack-protector $(call cc-option, -fno-stack-protector-all) # Options used by linker script export LDS_START := $(START) @@ -132,17 +130,26 @@ export LDS_ELF_FORMAT := $(ELF_FORMAT) # The wrappers will select whether using "malloc" or the kernel allocator. LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc -LD_FLAGS_CMDLINE = $(foreach opt,$(KBUILD_LDFLAGS),-Wl,$(opt)) +# Avoid binutils 2.39+ warnings by marking the stack non-executable and +# ignorning warnings for the kallsyms sections. +LDFLAGS_EXECSTACK = -z noexecstack +ifeq ($(CONFIG_LD_IS_BFD),y) +LDFLAGS_EXECSTACK += $(call ld-option,--no-warn-rwx-segments) +endif + +LD_FLAGS_CMDLINE = $(foreach opt,$(KBUILD_LDFLAGS) $(LDFLAGS_EXECSTACK),-Wl,$(opt)) # Used by link-vmlinux.sh which has special support for um link -export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE) +export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE) $(CC_FLAGS_LTO) # When cleaning we don't include .config, so we don't include # TT or skas makefiles and don't clean skas_ptregs.h. CLEAN_FILES += linux x.i gmon.out +MRPROPER_FILES += $(HOST_DIR)/include/generated archclean: @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ -o -name '*.gcov' \) -type f -print | xargs rm -f + $(Q)$(MAKE) -f $(srctree)/Makefile ARCH=$(HEADER_ARCH) clean -export HEADER_ARCH SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS DEV_NULL_PATH +export HEADER_ARCH SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING DEV_NULL_PATH |