############################################################################
# configs/px4fmu/common/Make.defs
#
# Copyright (C) 2011 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.
#
############################################################################
#
# Generic Make.defs for the PX4FMU
# Do not specify/use this file directly - it is included by config-specific
# Make.defs in the per-config directories.
#
include ${TOPDIR}/tools/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
include ${TOPDIR}/arch/arm/src/armv7-m/Toolchain.defs
CC = $(CROSSDEV)gcc
CXX = $(CROSSDEV)g++
CPP = $(CROSSDEV)gcc -E
LD = $(CROSSDEV)ld
AR = $(CROSSDEV)ar rcs
NM = $(CROSSDEV)nm
OBJCOPY = $(CROSSDEV)objcopy
OBJDUMP = $(CROSSDEV)objdump
MAXOPTIMIZATION = -O3
ARCHCPUFLAGS = -mcpu=cortex-m4 \
-mthumb \
-march=armv7e-m \
-mfpu=fpv4-sp-d16 \
-mfloat-abi=hard
# enable precise stack overflow tracking
INSTRUMENTATIONDEFINES = -finstrument-functions \
-ffixed-r10
# pull in *just* libm from the toolchain ... this is grody
LIBM = "${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 = $(TOPDIR)/tools/mknulldeps.sh
ARCHINCLUDES = -I. -isystem "${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)/common/$(LDSCRIPT)}"
else
ifeq ($(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/$(CONFIG_ARCH_BOARD)/common/$(LDSCRIPT)
else
# Linux/Cygwin-native toolchain
MKDEP = $(TOPDIR)/tools/mkdeps.sh
ARCHINCLUDES = -I. -isystem $(TOPDIR)/include
ARCHXXINCLUDES = -I. -isystem $(TOPDIR)/include -isystem $(TOPDIR)/include/cxx
ARCHSCRIPT = -T$(TOPDIR)/configs/$(CONFIG_ARCH_BOARD)/common/$(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}
# optimisation 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
ARCHCFLAGS = -std=gnu99
ARCHCXXFLAGS = -fno-exceptions -fno-rtti -std=gnu++0x
ARCHWARNINGS = -Wall \
-Wextra \
-Wdouble-promotion \
-Wshadow \
-Wfloat-equal \
-Wframe-larger-than=1024 \
-Wpointer-arith \
-Wlogical-op \
-Wmissing-declarations \
-Wpacked \
-Wno-unused-parameter
# -Wcast-qual - generates spurious noreturn attribute warnings, try again later
# -Wconversion - would be nice, but too many "risky-but-safe" conversions in the code
# -Wcast-align - would help catch bad casts in some cases, but generates too many false positives
ARCHCWARNINGS = $(ARCHWARNINGS) \
-Wbad-function-cast \
-Wstrict-prototypes \
-Wold-style-declaration \
-Wmissing-parameter-type \
-Wmissing-prototypes \
-Wnested-externs \
-Wunsuffixed-float-constants
ARCHWARNINGSXX = $(ARCHWARNINGS) \
-Wno-psabi
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.ld -no-check-sections
LDNXFLATFLAGS = -e main -s 2048
OBJEXT = .o
LIBEXT = .a
EXEEXT =
# produce partially-linked $1 from files in $2
define PRELINK
@echo "PRELINK: $1"
$(Q) $(LD) -Ur -o $1 $2 && $(OBJCOPY) --localize-hidden $1
endef
HOSTCC = gcc
HOSTINCLUDES = -I.
HOSTCFLAGS = -Wall -Wstrict-prototypes -Wshadow -g -pipe
HOSTLDFLAGS =
