arch/tile/Makefile

   1 #
   2 # This file is subject to the terms and conditions of the GNU General Public
   3 # License.  See the file "COPYING" in the main directory of this archive
   4 # for more details.
   5 #
   6 # This file is included by the global makefile so that you can add your own
   7 # architecture-specific flags and dependencies. Remember to do have actions
   8 # for "archclean" and "archdep" for cleaning up and making dependencies for
   9 # this architecture
  10
  11 # If building with TILERA_ROOT set (i.e. using the Tilera Multicore
  12 # Development Environment) we can set CROSS_COMPILE based on that.
  13 # If we're not cross-compiling, make sure we're on the right architecture.
  14 # Only bother to test for a few common targets, to avoid useless errors.
  15 ifeq ($(CROSS_COMPILE),)
  16   ifdef TILERA_ROOT
  17     CROSS_COMPILE := $(TILERA_ROOT)/bin/tile-
  18   else
  19     goals := $(if $(MAKECMDGOALS), $(MAKECMDGOALS), all)
  20     ifneq ($(strip $(filter vmlinux modules all,$(goals))),)
  21       HOST_ARCH := $(shell uname -m)
  22       ifneq ($(HOST_ARCH),$(ARCH))
  23 $(error Set TILERA_ROOT or CROSS_COMPILE when building $(ARCH) on $(HOST_ARCH))
  24       endif
  25     endif
  26   endif
  27 endif
  28
  29 # The tile compiler may emit .eh_frame information for backtracing.
  30 # In kernel modules, this causes load failures due to unsupported relocations.
  31 KBUILD_CFLAGS   += -fno-asynchronous-unwind-tables
  32
  33 LIBGCC_PATH     := \
  34   $(shell $(CC) $(KBUILD_CFLAGS) $(KCFLAGS) -print-libgcc-file-name)
  35
  36 # Provide the path to use for "make defconfig".
  37 # We default to the newer TILE-Gx architecture if only "tile" is given.
  38 ifeq ($(ARCH),tile)
  39         KBUILD_DEFCONFIG := tilegx_defconfig
  40 else
  41         KBUILD_DEFCONFIG := $(ARCH)_defconfig
  42 endif
  43
  44 # Used as a file extension when useful, e.g. head_$(BITS).o
  45 # Not needed for (e.g.) "$(CC) -m32" since the compiler automatically
  46 # uses the right default anyway.
  47 export BITS
  48 ifeq ($(CONFIG_TILEGX),y)
  49 BITS := 64
  50 else
  51 BITS := 32
  52 endif
  53
  54 head-y          := arch/tile/kernel/head_$(BITS).o
  55
  56 libs-y          += arch/tile/lib/
  57 libs-y          += $(LIBGCC_PATH)
  58
  59 # See arch/tile/Kbuild for content of core part of the kernel
  60 core-y          += arch/tile/
  61
  62 core-$(CONFIG_TILE_GXIO) += arch/tile/gxio/
  63
  64 ifdef TILERA_ROOT
  65 INSTALL_PATH ?= $(TILERA_ROOT)/tile/boot
  66 endif
  67
  68 install:
  69         install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
  70         install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
  71         install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
  72
  73 define archhelp
  74         echo '  install         - install kernel into $(INSTALL_PATH)'
  75 endef