linux/arch/tile/Makefile
Luc Van Oostenryck ea82daf435 tile: pass machine size to sparse
By default, sparse assumes a 64bit machine when compiled on x86-64
and 32bit when compiled on anything else.

This can of course create all sort of problems, like issuing false
warnings like: 'constant ... is so big it is unsigned long long'
or 'shift too big (32) for type unsigned long' when the architecture
is 64bit while sparse was compiled on a 32bit machine, or worse,
to not emit legitimate warnings in the reverse situation.

Fix this by passing to sparse the appropriate -m32/-m64 flag.

To: Chris Metcalf <cmetcalf@mellanox.com>
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
2017-10-31 16:54:03 -04:00

78 lines
2.4 KiB
Makefile

#
# 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.
#
# 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
# If building with TILERA_ROOT set (i.e. using the Tilera Multicore
# Development Environment) we can set CROSS_COMPILE based on that.
# If we're not cross-compiling, make sure we're on the right architecture.
# Only bother to test for a few common targets, to avoid useless errors.
ifeq ($(CROSS_COMPILE),)
ifdef TILERA_ROOT
CROSS_COMPILE := $(TILERA_ROOT)/bin/tile-
else
goals := $(if $(MAKECMDGOALS), $(MAKECMDGOALS), all)
ifneq ($(strip $(filter vmlinux modules all,$(goals))),)
HOST_ARCH := $(shell uname -m)
ifneq ($(HOST_ARCH),$(ARCH))
$(error Set TILERA_ROOT or CROSS_COMPILE when building $(ARCH) on $(HOST_ARCH))
endif
endif
endif
endif
# The tile compiler may emit .eh_frame information for backtracing.
# In kernel modules, this causes load failures due to unsupported relocations.
KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
LIBGCC_PATH := \
$(shell $(CC) $(KBUILD_CFLAGS) $(KCFLAGS) -print-libgcc-file-name)
# Provide the path to use for "make defconfig".
# We default to the newer TILE-Gx architecture if only "tile" is given.
ifeq ($(ARCH),tile)
KBUILD_DEFCONFIG := tilegx_defconfig
else
KBUILD_DEFCONFIG := $(ARCH)_defconfig
endif
# Used as a file extension when useful, e.g. head_$(BITS).o
# Not needed for (e.g.) "$(CC) -m32" since the compiler automatically
# uses the right default anyway.
export BITS
ifeq ($(CONFIG_TILEGX),y)
BITS := 64
else
BITS := 32
endif
CHECKFLAGS += -m$(BITS)
head-y := arch/tile/kernel/head_$(BITS).o
libs-y += arch/tile/lib/
libs-y += $(LIBGCC_PATH)
# See arch/tile/Kbuild for content of core part of the kernel
core-y += arch/tile/
core-$(CONFIG_TILE_GXIO) += arch/tile/gxio/
ifdef TILERA_ROOT
INSTALL_PATH ?= $(TILERA_ROOT)/tile/boot
endif
install:
install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
define archhelp
echo ' install - install kernel into $(INSTALL_PATH)'
endef