gcc4mbed/build/gcc4mbed.mk

   1 #Copyright (C) 2011 by Sagar G V
   2 #
   3 #Permission is hereby granted, free of charge, to any person obtaining a copy
   4 #of this software and associated documentation files (the "Software"), to deal
   5 #in the Software without restriction, including without limitation the rights
   6 #to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   7 #copies of the Software, and to permit persons to whom the Software is
   8 #furnished to do so, subject to the following conditions:
   9 #
  10 #The above copyright notice and this permission notice shall be included in
  11 #all copies or substantial portions of the Software.
  12 #
  13 #THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14 #IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15 #FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  16 #AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  17 #LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  18 #OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  19 #THE SOFTWARE.
  20 #
  21 # Updates:
  22 #    Arthur Wolf & Adam Green in 2011 - Updated to work with mbed.
  23 ###############################################################################
  24 # USAGE:
  25 # Variables that must be defined in including makefile.
  26 #   PROJECT: Name to be given to the output binary for this project.
  27 #   SRC: The root directory for the sources of your project.
  28 #   GCC4MED_DIR: The root directory for where the gcc4mbed sources are located
  29 #                in your project.  This should point to the parent directory
  30 #                of the build directory which contains this gcc4mbed.mk file.
  31 #   LIBS_PREFIX: List of library/object files to prepend to mbed.ar capi.ar libs.
  32 #   LIBS_SUFFIX: List of library/object files to append to mbed.ar capi.ar libs.
  33 # Example makefile:
  34 #       PROJECT=HelloWorld
  35 #       SRC=.
  36 #       GCC4MBED_DIR=../..
  37 #       LIBS_PREFIX=../agutil/agutil.ar
  38 #       LIBS_SUFFIX=
  39 #
  40 #       include ../../build/gcc4mbed.mk
  41 #
  42 ###############################################################################
  43
  44 # Default project source to be located in current directory.
  45 ifndef SRC
  46 SRC=./src
  47 endif
  48
  49 # List of sources to be compiled/assembled
  50 CSRCS = $(wildcard $(SRC)/*.c) $(wildcard $(SRC)/*/*.c) $(wildcard $(SRC)/*/*/*.c) $(wildcard $(SRC)/*/*/*/*.c)
  51 ASRCS =  $(wildcard $(SRC)/*.S) $(wildcard $(SRC)/*/*.S) $(wildcard $(SRC)/*/*/*.S) $(wildcard $(SRC)/*/*/*/*.S)
  52 CPPSRCS = $(wildcard $(SRC)/*.cpp) $(wildcard $(SRC)/*/*.cpp) $(wildcard $(SRC)/*/*/*.cpp) $(wildcard $(SRC)/*/*/*/*.cpp)
  53
  54 # Add in the gcc4mbed shim sources that allow mbed code build under GCC
  55 CSRCS += $(GCC4MBED_DIR)/src/gcc4mbed.c $(GCC4MBED_DIR)/src/syscalls.c
  56
  57 # List of the objects files to be compiled/assembled
  58 OBJECTS= $(CSRCS:.c=.o) $(ASRCS:.S=.o) $(CPPSRCS:.cpp=.o)
  59 LSCRIPT=$(GCC4MBED_DIR)/build/mbed.ld
  60
  61 # Location of external library and header dependencies.
  62 EXTERNAL_DIR = $(GCC4MBED_DIR)/external
  63
  64 # Include path
  65 INCDIRS += $(EXTERNAL_DIR)/mbed $(EXTERNAL_DIR)/mbed/LPC1768 $(EXTERNAL_DIR)/FATFileSystem $(SRC)
  66
  67 # DEFINEs to be used when building C/C++ code
  68 DEFINES = -DTARGET_LPC1768
  69
  70 # Libraries to be linked into final binary
  71 LIBS = $(LIBS_PREFIX) $(EXTERNAL_DIR)/mbed/LPC1768/mbed.ar $(EXTERNAL_DIR)/mbed/LPC1768/capi.ar $(EXTERNAL_DIR)/FATFileSystem/LPC1768/FATFileSystem.ar $(LIBS_SUFFIX)
  72
  73 # Optimization level
  74 OPTIMIZATION = 2
  75
  76 #  Compiler Options
  77 GPFLAGS = -O$(OPTIMIZATION) -gdwarf-2 -mcpu=cortex-m3 -mthumb -mthumb-interwork -fshort-wchar -ffunction-sections -fdata-sections -fpromote-loop-indices -Wall -Wextra -Wimplicit -Wcast-align -Wpointer-arith -Wredundant-decls -Wshadow -Wcast-qual -Wcast-align -fno-exceptions
  78 GPFLAGS += $(patsubst %,-I%,$(INCDIRS))
  79 GPFLAGS += $(DEFINES)
  80
  81 LDFLAGS = -mcpu=cortex-m3 -mthumb -O$(OPTIMIZATION) -Wl,-Map=$(PROJECT).map,--cref,--gc-sections,--no-wchar-size-warning -T$(LSCRIPT) -L $(EXTERNAL_DIR)/gcc/LPC1768
  82
  83 ASFLAGS = $(LISTING) -mcpu=cortex-m3 -mthumb -x assembler-with-cpp
  84 ASFLAGS += $(patsubst %,-I%,$(INCDIRS))
  85
  86 #  Compiler/Assembler/Linker Paths
  87 GPP = arm-none-eabi-g++
  88 AS = arm-none-eabi-gcc
  89 LD = arm-none-eabi-g++
  90 OBJCOPY = arm-none-eabi-objcopy
  91 OBJDUMP = arm-none-eabi-objdump
  92 REMOVE = rm -f
  93 SIZE = arm-none-eabi-size
  94
  95 #########################################################################
  96
  97 all:: $(PROJECT).hex $(PROJECT).bin $(PROJECT).disasm
  98
  99 $(PROJECT).bin: $(PROJECT).elf
 100         $(OBJCOPY) -O binary $(PROJECT).elf $(PROJECT).bin
 101
 102 $(PROJECT).hex: $(PROJECT).elf
 103         $(OBJCOPY) -R .stack -O ihex $(PROJECT).elf $(PROJECT).hex
 104
 105 $(PROJECT).disasm: $(PROJECT).elf
 106         $(OBJDUMP) -d $(PROJECT).elf >$(PROJECT).disasm
 107
 108 $(PROJECT).elf: $(LSCRIPT) $(OBJECTS)
 109         $(LD) $(LDFLAGS) $(OBJECTS) $(LIBS) -o $(PROJECT).elf
 110         $(SIZE) $(PROJECT).elf
 111
 112 stats: $(PROJECT).elf
 113         $(SIZE) $(PROJECT).elf
 114
 115 clean:
 116         $(REMOVE) $(OBJECTS)
 117         $(REMOVE) $(PROJECT).hex
 118         $(REMOVE) $(PROJECT).elf
 119         $(REMOVE) $(PROJECT).map
 120         $(REMOVE) $(PROJECT).bin
 121         $(REMOVE) $(PROJECT).disasm
 122
 123 #########################################################################
 124 #  Default rules to compile .c and .cpp file to .o
 125 #  and assemble .s files to .o
 126
 127 .c.o :
 128         $(GPP) $(GPFLAGS) -c $< -o $(<:.c=.o)
 129
 130 .cpp.o :
 131         $(GPP) $(GPFLAGS) -c $< -o $(<:.cpp=.o)
 132
 133 .S.o :
 134         $(AS) $(ASFLAGS) -c $< -o $(<:.S=.o)
 135
 136 #########################################################################