-VERSION = 3
-PATCHLEVEL = 19
+VERSION = 4
+PATCHLEVEL = 0
SUBLEVEL = 0
-EXTRAVERSION =
-NAME = Diseased Newt
+EXTRAVERSION = -rc1
+NAME = Hurr durr I'ma sheep
# *DOCUMENTATION*
# To see a list of typical targets execute "make help"
# Comments in this file are targeted only to the developer, do not
# expect to learn how to build the kernel reading this file.
-# Do not use make's built-in rules and variables
-# (this increases performance and avoids hard-to-debug behaviour);
-MAKEFLAGS += -rR
+# o Do not use make's built-in rules and variables
+# (this increases performance and avoids hard-to-debug behaviour);
+# o Look for make include files relative to root of kernel src
+MAKEFLAGS += -rR --include-dir=$(CURDIR)
# Avoid funny character set dependencies
unexport LC_ALL
export COMPILER
endif
-# Look for make include files relative to root of kernel src
-MAKEFLAGS += --include-dir=$(srctree)
-
# We need some generic definitions (do not try to remake the file).
-$(srctree)/scripts/Kbuild.include: ;
-include $(srctree)/scripts/Kbuild.include
+scripts/Kbuild.include: ;
+include scripts/Kbuild.include
# Make variables (CC, etc...)
AS = $(CROSS_COMPILE)as
LD = $(CROSS_COMPILE)ld
+LDFINAL = $(LD)
CC = $(CROSS_COMPILE)gcc
CPP = $(CC) -E
+ifdef CONFIG_LTO
+AR = $(CROSS_COMPILE)gcc-ar
+else
AR = $(CROSS_COMPILE)ar
+endif
NM = $(CROSS_COMPILE)nm
STRIP = $(CROSS_COMPILE)strip
OBJCOPY = $(CROSS_COMPILE)objcopy
export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
-export CPP AR NM STRIP OBJCOPY OBJDUMP
+export CPP AR NM STRIP OBJCOPY OBJDUMP LDFINAL
export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE
export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
-export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
+export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV CFLAGS_KASAN
export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
export KBUILD_ARFLAGS
+ifdef CONFIG_LTO
+# LTO gcc creates a lot of files in TMPDIR, and with /tmp as tmpfs
+# it's easy to drive the machine OOM. Use the object directory
+# instead.
+ifndef TMPDIR
+TMPDIR ?= $(objtree)
+export TMPDIR
+$(info setting TMPDIR=$(objtree) for LTO build)
+endif
+endif
+
# When compiling out-of-tree modules, put MODVERDIR in the module
# tree rather than in the kernel tree. The kernel tree might
# even be read-only.
ifeq ($(KBUILD_EXTMOD),)
ifneq ($(filter config %config,$(MAKECMDGOALS)),)
config-targets := 1
- ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
+ ifneq ($(words $(MAKECMDGOALS)),1)
mixed-targets := 1
endif
endif
# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
# KBUILD_DEFCONFIG may point out an alternative default configuration
# used for 'make defconfig'
-include $(srctree)/arch/$(SRCARCH)/Makefile
+include arch/$(SRCARCH)/Makefile
export KBUILD_DEFCONFIG KBUILD_KCONFIG
config: scripts_basic outputmakefile FORCE
# Defaults to vmlinux, but the arch makefile usually adds further targets
all: vmlinux
-include $(srctree)/arch/$(SRCARCH)/Makefile
+include arch/$(SRCARCH)/Makefile
KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,)
endif
ifdef CONFIG_FUNCTION_TRACER
+ifndef CC_FLAGS_FTRACE
+CC_FLAGS_FTRACE := -pg
+endif
+export CC_FLAGS_FTRACE
ifdef CONFIG_HAVE_FENTRY
CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY)
endif
-KBUILD_CFLAGS += -pg $(CC_USING_FENTRY)
+KBUILD_CFLAGS += $(CC_FLAGS_FTRACE) $(CC_USING_FENTRY)
KBUILD_AFLAGS += $(CC_USING_FENTRY)
ifdef CONFIG_DYNAMIC_FTRACE
ifdef CONFIG_HAVE_C_RECORDMCOUNT
KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
endif
-include $(srctree)/scripts/Makefile.extrawarn
+include scripts/Makefile.kasan
+include scripts/Makefile.extrawarn
+include scripts/Makefile.lto
# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
KBUILD_CPPFLAGS += $(KCPPFLAGS)
endif
ifdef CONFIG_BUILD_DOCSRC
$(Q)$(MAKE) $(build)=Documentation
+endif
+ifdef CONFIG_GDB_SCRIPTS
+ $(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py
endif
+$(call if_changed,link-vmlinux)
$(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
$(srctree)/scripts/headerdep.pl -I$(srctree)/include
-# ---------------------------------------------------------------------------
-
-PHONY += depend dep
-depend dep:
- @echo '*** Warning: make $@ is unnecessary now.'
-
# ---------------------------------------------------------------------------
# Firmware install
INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
# Directories & files removed with 'make mrproper'
MRPROPER_DIRS += include/config usr/include include/generated \
arch/*/include/generated .tmp_objdiff
-MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \
+MRPROPER_FILES += .config .config.old .version .old_version \
Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
signing_key.priv signing_key.x509 x509.genkey \
extra_certificates signing_key.x509.keyid \
- signing_key.x509.signer
+ signing_key.x509.signer vmlinux-gdb.py
# clean - Delete most, but leave enough to build external modules
#
projects / karo-tx-linux.git / blobdiff