forked from Archive/PX4-Autopilot
178 lines
4.3 KiB
Makefile
178 lines
4.3 KiB
Makefile
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#
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# Definitions for a generic GNU ARM-EABI toolchain
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#
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CROSSDEV = arm-none-eabi-
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CC = $(CROSSDEV)gcc
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CXX = $(CROSSDEV)g++
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CPP = $(CROSSDEV)gcc -E
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LD = $(CROSSDEV)ld
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AR = $(CROSSDEV)ar rcs
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NM = $(CROSSDEV)nm
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OBJCOPY = $(CROSSDEV)objcopy
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OBJDUMP = $(CROSSDEV)objdump
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# XXX this is pulled pretty directly from the fmu Make.defs - needs cleanup
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MAXOPTIMIZATION = -O3
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# base CPU flags
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ARCHCPUFLAGS_CORTEXM4F = -mcpu=cortex-m4 \
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-mthumb \
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-march=armv7e-m \
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-mfpu=fpv4-sp-d16 \
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-mfloat-abi=hard
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ARCHCPUFLAGS_CORTEXM4 = -mcpu=cortex-m4 \
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-mthumb \
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-march=armv7e-m \
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-mfloat-abi=soft
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ARCHCPUFLAGS_CORTEXM3 = -mcpu=cortex-m3 \
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-mthumb \
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-march=armv6-m \
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-mfloat-abi=soft
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ARCHCPUFLAGS = $(ARCHCPUFLAGS_$(CONFIG_ARCH))
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# optimisation flags
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ARCHOPTIMIZATION = $(MAXOPTIMIZATION) \
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-fno-strict-aliasing \
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-fno-strength-reduce \
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-fomit-frame-pointer \
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-funsafe-math-optimizations \
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-fno-builtin-printf \
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-ffunction-sections \
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-fdata-sections
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ifeq ("${CONFIG_DEBUG_SYMBOLS}","y")
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ARCHOPTIMIZATION += -g
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endif
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# enable precise stack overflow tracking
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# note - requires corresponding support in NuttX
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INSTRUMENTATIONDEFINES = -finstrument-functions \
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-ffixed-r10
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ARCHCFLAGS = -std=gnu99
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ARCHCXXFLAGS = -fno-exceptions -fno-rtti -std=gnu++0x
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ARCHWARNINGS = -Wall \
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-Wextra \
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-Wdouble-promotion \
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-Wshadow \
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-Wfloat-equal \
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-Wframe-larger-than=1024 \
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-Wpointer-arith \
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-Wlogical-op \
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-Wmissing-declarations \
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-Wpacked \
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-Wno-unused-parameter
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# -Wcast-qual - generates spurious noreturn attribute warnings, try again later
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# -Wconversion - would be nice, but too many "risky-but-safe" conversions in the code
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# -Wcast-align - would help catch bad casts in some cases, but generates too many false positives
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ARCHCWARNINGS = $(ARCHWARNINGS) \
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-Wbad-function-cast \
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-Wstrict-prototypes \
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-Wold-style-declaration \
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-Wmissing-parameter-type \
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-Wmissing-prototypes \
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-Wnested-externs \
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-Wunsuffixed-float-constants
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ARCHWARNINGSXX = $(ARCHWARNINGS)
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# pull in *just* libm from the toolchain ... this is grody
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LIBM = $(shell $(CC) $(ARCHCPUFLAGS) -print-file-name=libm.a)
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EXTRA_LIBS += $(LIBM)
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CFLAGS = $(ARCHCFLAGS) \
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$(ARCHCWARNINGS) \
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$(ARCHOPTIMIZATION) \
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$(ARCHCPUFLAGS) \
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$(ARCHINCLUDES) \
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$(INSTRUMENTATIONDEFINES) \
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$(ARCHDEFINES) \
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$(EXTRADEFINES) \
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-fno-common
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CXXFLAGS = $(ARCHCXXFLAGS) \
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$(ARCHWARNINGSXX) \
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$(ARCHOPTIMIZATION) \
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$(ARCHCPUFLAGS) \
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$(ARCHXXINCLUDES) \
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$(INSTRUMENTATIONDEFINES) \
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$(ARCHDEFINES) \
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$(EXTRADEFINES)
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CPPFLAGS = $(ARCHINCLUDES) \
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$(INSTRUMENTATIONDEFINES) \
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$(ARCHDEFINES) \
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$(EXTRADEFINES)
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AFLAGS = $(CFLAGS) -D__ASSEMBLY__
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LDFLAGS += --warn-common \
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--gc-sections \
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-T $(LDSCRIPT) \
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$(addprefix -L,$(LIB_DIRS))
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LIBGCC := $(shell $(CC) $(ARCHCPUFLAGS) -print-libgcc-file-name)
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# files that the final link depends on
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# XXX add libraries that we know about here...
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LINK_DEPS += $(LDSCRIPT)
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# files to include to get automated dependencies
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DEP_INCLUDES = $(subst .o,.d,$(OBJS))
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ifeq ($(V),)
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Q = @
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else
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Q =
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endif
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# compile C source $1 to object $2
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# as a side-effect, generate a dependency file
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define COMPILE
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@echo "CC: $1"
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$(Q) $(CC) -MD -c $(CFLAGS) $(abspath $1) -o $2
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endef
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# compile C++ source $1 to $2
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# as a side-effect, generate a dependency file
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define COMPILEXX
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@echo "CXX: $1"
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$(Q) $(CXX) -MD -c $(CXXFLAGS) $(abspath $1) -o $2
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endef
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# assemble $1 into $2
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define ASSEMBLE
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@echo "AS: $1"
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$(Q) $(CC) -c $(AFLAGS) $(abspath $1) -o $2
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endef
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# produce partially-linked $1 from files in $2
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define PRELINK
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@echo "PRELINK: $1"
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$(Q) $(LD) -Ur -o $1 $2 && $(OBJCOPY) --localize-hidden $1
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endef
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# update the archive $1 with the files in $2
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define ARCHIVE
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@echo "AR: $2"
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$(Q) $(AR) $1 $2
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endef
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# Link the objects in $2 into the binary $1
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define LINK
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@echo "LINK: $1"
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$(Q) $(LD) $(LDFLAGS) -o $1 --start-group $(LIBS) $(EXTRA_LIBS) $(LIBGCC) --end-group
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endef
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# convert $1 from a linked object to a raw binary
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define SYM_TO_BIN
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@echo "BIN: $2"
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$(Q) $(OBJCOPY) -O binary $1 $2
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endef
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