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Diffstat (limited to 'makefiles/toolchain_gnu-arm-eabi.mk')
| -rw-r--r-- | makefiles/toolchain_gnu-arm-eabi.mk | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/makefiles/toolchain_gnu-arm-eabi.mk b/makefiles/toolchain_gnu-arm-eabi.mk new file mode 100644 index 000000000..0e651e53c --- /dev/null +++ b/makefiles/toolchain_gnu-arm-eabi.mk @@ -0,0 +1,270 @@ +# +# Copyright (C) 2012 PX4 Development Team. All rights reserved. +# +# 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 PX4 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. +# + +# +# Definitions for a generic GNU ARM-EABI toolchain +# + +#$(info TOOLCHAIN gnu-arm-eabi) + +# Toolchain commands. Normally only used inside this file. +# +CROSSDEV = arm-none-eabi- + +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 + +# XXX this is pulled pretty directly from the fmu Make.defs - needs cleanup + +MAXOPTIMIZATION = -O3 + +# Base CPU flags for each of the supported architectures. +# +ARCHCPUFLAGS_CORTEXM4F = -mcpu=cortex-m4 \ + -mthumb \ + -march=armv7e-m \ + -mfpu=fpv4-sp-d16 \ + -mfloat-abi=hard + +ARCHCPUFLAGS_CORTEXM4 = -mcpu=cortex-m4 \ + -mthumb \ + -march=armv7e-m \ + -mfloat-abi=soft + +ARCHCPUFLAGS_CORTEXM3 = -mcpu=cortex-m3 \ + -mthumb \ + -march=armv7-m \ + -mfloat-abi=soft + +# Pick the right set of flags for the architecture. +# +ARCHCPUFLAGS = $(ARCHCPUFLAGS_$(CONFIG_ARCH)) +ifeq ($(ARCHCPUFLAGS),) +$(error Must set CONFIG_ARCH to one of CORTEXM4F, CORTEXM4 or CORTEXM3) +endif + +# optimisation flags +# +ARCHOPTIMIZATION = $(MAXOPTIMIZATION) \ + -g \ + -fno-strict-aliasing \ + -fno-strength-reduce \ + -fomit-frame-pointer \ + -funsafe-math-optimizations \ + -fno-builtin-printf \ + -ffunction-sections \ + -fdata-sections + +# enable precise stack overflow tracking +# note - requires corresponding support in NuttX +INSTRUMENTATIONDEFINES = -finstrument-functions \ + -ffixed-r10 +# Language-specific flags +# +ARCHCFLAGS = -std=gnu99 +ARCHCXXFLAGS = -fno-exceptions -fno-rtti -std=gnu++0x + +# Generic warnings +# +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 + +# C-specific warnings +# +ARCHCWARNINGS = $(ARCHWARNINGS) \ + -Wbad-function-cast \ + -Wstrict-prototypes \ + -Wold-style-declaration \ + -Wmissing-parameter-type \ + -Wmissing-prototypes \ + -Wnested-externs \ + -Wunsuffixed-float-constants + +# C++-specific warnings +# +ARCHWARNINGSXX = $(ARCHWARNINGS) + +# pull in *just* libm from the toolchain ... this is grody +LIBM := $(shell $(CC) $(ARCHCPUFLAGS) -print-file-name=libm.a) +EXTRA_LIBS += $(LIBM) + +# Flags we pass to the C compiler +# +CFLAGS = $(ARCHCFLAGS) \ + $(ARCHCWARNINGS) \ + $(ARCHOPTIMIZATION) \ + $(ARCHCPUFLAGS) \ + $(ARCHINCLUDES) \ + $(INSTRUMENTATIONDEFINES) \ + $(ARCHDEFINES) \ + $(EXTRADEFINES) \ + $(EXTRACFLAGS) \ + -fno-common \ + $(addprefix -I,$(INCLUDE_DIRS)) + +# Flags we pass to the C++ compiler +# +CXXFLAGS = $(ARCHCXXFLAGS) \ + $(ARCHWARNINGSXX) \ + $(ARCHOPTIMIZATION) \ + $(ARCHCPUFLAGS) \ + $(ARCHXXINCLUDES) \ + $(INSTRUMENTATIONDEFINES) \ + $(ARCHDEFINES) \ + -DCONFIG_WCHAR_BUILTIN \ + $(EXTRADEFINES) \ + $(EXTRACXXFLAGS) \ + $(addprefix -I,$(INCLUDE_DIRS)) + +# Flags we pass to the assembler +# +AFLAGS = $(CFLAGS) -D__ASSEMBLY__ \ + $(EXTRADEFINES) \ + $(EXTRAAFLAGS) + +# Flags we pass to the linker +# +LDFLAGS += --warn-common \ + --gc-sections \ + $(EXTRALDFLAGS) \ + $(addprefix -T,$(LDSCRIPT)) \ + $(addprefix -L,$(LIB_DIRS)) + +# Compiler support library +# +LIBGCC := $(shell $(CC) $(ARCHCPUFLAGS) -print-libgcc-file-name) + +# Files that the final link depends on +# +LINK_DEPS += $(LDSCRIPT) + +# Files to include to get automated dependencies +# +DEP_INCLUDES = $(subst .o,.d,$(OBJS)) + +# Compile C source $1 to object $2 +# as a side-effect, generate a dependency file +# +define COMPILE + @$(ECHO) "CC: $1" + @$(MKDIR) -p $(dir $2) + $(Q) $(CC) -MD -c $(CFLAGS) $(abspath $1) -o $2 +endef + +# Compile C++ source $1 to $2 +# as a side-effect, generate a dependency file +# +define COMPILEXX + @$(ECHO) "CXX: $1" + @$(MKDIR) -p $(dir $2) + $(Q) $(CXX) -MD -c $(CXXFLAGS) $(abspath $1) -o $2 +endef + +# Assemble $1 into $2 +# +define ASSEMBLE + @$(ECHO) "AS: $1" + @$(MKDIR) -p $(dir $2) + $(Q) $(CC) -c $(AFLAGS) $(abspath $1) -o $2 +endef + +# Produce partially-linked $1 from files in $2 +# +define PRELINK + @$(ECHO) "PRELINK: $1" + @$(MKDIR) -p $(dir $1) + $(Q) $(LD) -Ur -o $1 $2 && $(OBJCOPY) --localize-hidden $1 +endef + +# Update the archive $1 with the files in $2 +# +define ARCHIVE + @$(ECHO) "AR: $2" + @$(MKDIR) -p $(dir $1) + $(Q) $(AR) $1 $2 +endef + +# Link the objects in $2 into the binary $1 +# +define LINK + @$(ECHO) "LINK: $1" + @$(MKDIR) -p $(dir $1) + $(Q) $(LD) $(LDFLAGS) -o $1 --start-group $2 $(LIBS) $(EXTRA_LIBS) $(LIBGCC) --end-group +endef + +# Convert $1 from a linked object to a raw binary in $2 +# +define SYM_TO_BIN + @$(ECHO) "BIN: $2" + @$(MKDIR) -p $(dir $2) + $(Q) $(OBJCOPY) -O binary $1 $2 +endef + +# Take the raw binary $1 and make it into an object file $2. +# The symbol $3 points to the beginning of the file, and $3_len +# gives its length. +# +# - compile an empty file to generate a suitable object file +# - relink the object and insert the binary file +# - edit symbol names to suit +# +define BIN_SYM_PREFIX + _binary_$(subst /,_,$(subst .,_,$1)) +endef +define BIN_TO_OBJ + @$(ECHO) "OBJ: $2" + @$(MKDIR) -p $(dir $2) + $(Q) $(ECHO) > $2.c + $(call COMPILE,$2.c,$2.c.o) + $(Q) $(LD) -r -o $2 $2.c.o -b binary $1 + $(Q) $(OBJCOPY) $2 \ + --redefine-sym $(call BIN_SYM_PREFIX,$1)_start=$3 \ + --redefine-sym $(call BIN_SYM_PREFIX,$1)_size=$3_len \ + --strip-symbol $(call BIN_SYM_PREFIX,$1)_end +endef |