############################################################################
# configs/px4fmu-v5/nsh/Make.defs
#
#   Copyright (C) 2016 Gregory Nutt. All rights reserved.
#   Authors: Gregory Nutt <gnutt@nuttx.org>
#            David Sidrane <david_s5@nscdg.com>
#
# 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.
#
############################################################################

include ${TOPDIR}/.config
include ${TOPDIR}/tools/Config.mk
include $(TOPDIR)/PX4_Warnings.mk
include $(TOPDIR)/PX4_Config.mk

#
# We only support building with the ARM bare-metal toolchain from
# https://launchpad.net/gcc-arm-embedded on Windows, Linux or Mac OS.
#
CONFIG_ARMV7M_TOOLCHAIN	:= GNU_EABI${HOST_OS_FIRST_LETTER}

include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs

CC = $(CROSSDEV)gcc
CXX = $(CROSSDEV)g++
CPP = $(CROSSDEV)gcc -E
LD = $(CROSSDEV)ld
AR = $(ARCROSSDEV)ar rcs
NM = $(ARCROSSDEV)nm
OBJCOPY = $(CROSSDEV)objcopy
OBJDUMP = $(CROSSDEV)objdump

MAXOPTIMIZATION		 = -Os

# Enable precise stack overflow tracking

ifeq ($(CONFIG_ARMV7M_STACKCHECK),y)
INSTRUMENTATIONDEFINES	 = -finstrument-functions -ffixed-r10
endif

# Pull in *just* libm from the toolchain ... this is grody

LIBM			 = "${shell $(CC) $(ARCHCPUFLAGS) -print-file-name=libm.a}"
EXTRA_LIBS		+= $(LIBM)

# Use our linker script

LDSCRIPT = ld.script

ifeq ($(WINTOOL),y)
  # Windows-native toolchains
  DIRLINK = $(TOPDIR)/tools/copydir.sh
  DIRUNLINK = $(TOPDIR)/tools/unlink.sh
  MKDEP = $(TOPDIR)/tools/mkwindeps.sh
  ARCHINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}"
  ARCHXXINCLUDES = -I. -isystem "${shell cygpath -w $(TOPDIR)/include}" -isystem "${shell cygpath -w $(TOPDIR)/include/cxx}"
  ARCHSCRIPT = -T "${shell cygpath -w $(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)}"
else
  ifeq ($(PX4_WINTOOL),y)
    # Windows-native toolchains (MSYS)
    DIRLINK		 = $(TOPDIR)/tools/copydir.sh
    DIRUNLINK		 = $(TOPDIR)/tools/unlink.sh
    MKDEP		 = $(TOPDIR)/tools/mknulldeps.sh
    ARCHINCLUDES	 = -I. -isystem $(TOPDIR)/include
    ARCHXXINCLUDES	 = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
    ARCHSCRIPT		 = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
  else
    # Linux/Cygwin-native toolchain
    MKDEP = $(TOPDIR)/tools/mkdeps$(HOSTEXEEXT)
    ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
    ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
    ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/scripts/$(LDSCRIPT)
  endif
endif

# Tool versions

ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}

# Optimization flags

ARCHOPTIMIZATION	 = $(MAXOPTIMIZATION) \
			   -fno-strict-aliasing \
			   -fno-strength-reduce \
			   -fomit-frame-pointer \
			   -funsafe-math-optimizations \
			   -fno-builtin-printf \
			   -ffunction-sections \
			   -fdata-sections

ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
  ARCHOPTIMIZATION += -g
endif

ifneq ($(CONFIG_DEBUG_NOOPT),y)
  ARCHOPTIMIZATION += $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
endif

ARCHCFLAGS		= --std=gnu99
ARCHCXXFLAGS	= -fno-exceptions -fno-rtti -std=gnu++0x
ARCHWARNINGS	= $(PX4_ARCHWARNINGS)
ARCHCWARNINGS	= $(PX4_ARCHWARNINGS) $(PX4_ARCHCWARNINGS)
ARCHWARNINGSXX	= $(ARCHWARNINGS) $(PX4_ARCHWARNINGSXX)
ARCHDEFINES =
ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10

# This seems to be the only way to add linker flags

EXTRA_LIBS		+= --warn-common \
			   --gc-sections

CFLAGS 		= $(ARCHCFLAGS) $(ARCHCWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(INSTRUMENTATIONDEFINES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe -fno-common
CPICFLAGS 	= $(ARCHPICFLAGS) $(CFLAGS)
CXXFLAGS 	= $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES)  $(INSTRUMENTATIONDEFINES) $(ARCHDEFINES) $(EXTRADEFINES) -pipe
CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
CPPFLAGS 	= $(ARCHINCLUDES) $(INSTRUMENTATIONDEFINES) $(ARCHDEFINES) $(EXTRADEFINES)
AFLAGS 		= $(CFLAGS) -D__ASSEMBLY__

NXFLATLDFLAGS1 = -r -d -warn-common
NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-pcrel.ld -no-check-sections
LDNXFLATFLAGS = -e main -s 2048

ASMEXT = .S
OBJEXT = .o
LIBEXT = .a
EXEEXT =

ifneq ($(CROSSDEV),arm-nuttx-elf-)
  LDFLAGS += -nostartfiles -nodefaultlibs
endif
ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
  LDFLAGS += -g
endif


HOSTCC = gcc
HOSTINCLUDES = -I.
HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -Wundef -g -pipe
HOSTLDFLAGS =
