############################################################################
# arch/arm/src/armv/Toolchain.defs
#
#   Copyright (C) 2012-2013 Gregory Nutt. All rights reserved.
#   Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
# 3. Neither the name NuttX nor the names of its contributors may be
#    used to endorse or promote products derived from this software
#    without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################################

# Setup for the selected toolchain

#
# Handle old-style chip-specific toolchain names in the absence of
# a new-style toolchain specification, force the selection of a single
# toolchain and allow the selected toolchain to be overridden by a
# command-line selection.
#

ifeq ($(filter y, \
      $(CONFIG_DM320_BUILDROOT) \
      $(CONFIG_LPC313X_BUILDROOT) \
      $(CONFIG_LPC31_BUILDROOT) \
      $(CONFIG_OLIMEX_LPC2378_BUILDROOT) \
      $(CONFIG_ARM_TOOLCHAIN_BUILDROOT) \
    ),y)
  CONFIG_ARM_TOOLCHAIN ?= BUILDROOT
endif

ifeq ($(filter y, \
      $(CONFIG_DM320_CODESOURCERYL) \
      $(CONFIG_LPC31_CODESOURCERYL) \
      $(CONFIG_OLIMEX_LPC2378_CODESOURCERYL) \
      $(CONFIG_ARM_TOOLCHAIN_CODESOURCERYL) \
    ),y)
  CONFIG_ARM_TOOLCHAIN ?= CODESOURCERYL
endif

ifeq ($(filter y, \
      $(CONFIG_DM320_CODESOURCERYW) \
      $(CONFIG_LPC31_CODESOURCERYW) \
      $(CONFIG_OLIMEX_LPC2378_CODESOURCERYW) \
      $(CONFIG_ARM_TOOLCHAIN_CODESOURCERYW) \
    ),y)
  CONFIG_ARM_TOOLCHAIN ?= CODESOURCERYW
endif

ifeq ($(filter y, \
      $(CONFIG_DM320_DEVKITARM) \
      $(CONFIG_LPC31_DEVKITARM) \
      $(CONFIG_OLIMEX_LPC2378_DEVKITARM) \
      $(CONFIG_ARM_TOOLCHAIN_DEVKITARM) \
    ),y)
  CONFIG_ARM_TOOLCHAIN ?= DEVKITARM
endif

ifeq ($(filter y, \
      $(CONFIG_ARM_TOOLCHAIN_GNU_EABIL) \
    ),y)
  CONFIG_ARM_TOOLCHAIN ?= GNU_EABIL
endif

ifeq ($(filter y, \
      $(CONFIG_ARM_TOOLCHAIN_GNU_EABIW) \
    ),y)
  CONFIG_ARM_TOOLCHAIN ?= GNU_EABIW
endif

#
# Supported toolchains
#
# TODO - It's likely that all of these toolchains now support the
#        CortexM4.  Since they are all GCC-based, we could almost
#        certainly simplify this further.
#
# Each toolchain definition should set:
#
#  CROSSDEV         The GNU toolchain triple (command prefix)
#  ARCROSSDEV       If required, an alternative prefix used when
#                   invoking ar and nm.
#  ARCHCPUFLAGS     CPU-specific flags selecting the instruction set
#                   FPU options, etc.
#  MAXOPTIMIZATION  The maximum optimization level that results in
#                   reliable code generation.
#

# NuttX buildroot under Linux or Cygwin

ifeq ($(CONFIG_ARM_TOOLCHAIN),BUILDROOT)
ifeq ($(CONFIG_ARM_OABI_TOOLCHAIN),y)
  CROSSDEV ?= arm-nuttx-elf-
  ARCROSSDEV ?= arm-nuttx-elf-
else
  CROSSDEV ?= arm-nuttx-eabi-
  ARCROSSDEV ?= arm-nuttx-eabi-
endif
  MAXOPTIMIZATION = -Os
endif

# CodeSourcery under Linux

ifeq ($(CONFIG_ARM_TOOLCHAIN),CODESOURCERYL)
  CROSSDEV ?= arm-none-eabi-
  ARCROSSDEV ?= arm-none-eabi-
  MAXOPTIMIZATION = -O2
endif

# CodeSourcery under Windows

ifeq ($(CONFIG_ARM_TOOLCHAIN),CODESOURCERYW)
  CROSSDEV ?= arm-none-eabi-
  ARCROSSDEV ?= arm-none-eabi-
  MAXOPTIMIZATION = -O2
  ifneq ($(CONFIG_WINDOWS_NATIVE),y)
    WINTOOL = y
  endif
endif

# devkitARM under Windows

ifeq ($(CONFIG_ARM_TOOLCHAIN),DEVKITARM)
  CROSSDEV ?= arm-eabi-
  ARCROSSDEV ?= arm-eabi-
  ifneq ($(CONFIG_WINDOWS_NATIVE),y)
    WINTOOL = y
  endif
endif

# Generic GNU EABI toolchain on OS X, Linux or any typical Posix system

ifeq ($(CONFIG_ARM_TOOLCHAIN),GNU_EABIL)
  CROSSDEV ?= arm-none-eabi-
  ARCROSSDEV ?= arm-none-eabi-
  MAXOPTIMIZATION = -Os
endif

# Generic GNU EABI toolchain under Windows

ifeq ($(CONFIG_ARM_TOOLCHAIN),GNU_EABIW)
  CROSSDEV ?= arm-none-eabi-
  ARCROSSDEV ?= arm-none-eabi-
  MAXOPTIMIZATION = -Os
  ifneq ($(CONFIG_WINDOWS_NATIVE),y)
    WINTOOL = y
  endif
endif

