Makefile

ifeq ($(USE_OPT),)
  USE_OPT = -O2 -ggdb -fomit-frame-pointer -falign-functions=16 -fsingle-precision-constant
endif

# C specific options here (added to USE_OPT).
ifeq ($(USE_COPT),)
  USE_COPT = 
endif

# C++ specific options here (added to USE_OPT).
ifeq ($(USE_CPPOPT),)
  USE_CPPOPT = -fno-rtti -fno-exceptions -ffast-math -funsafe-math-optimizations -fno-threadsafe-statics -fno-use-cxa-atexit -std=c++17
endif

# Enable this if you want the linker to remove unused code and data.
ifeq ($(USE_LINK_GC),)
  USE_LINK_GC = yes
endif

# Linker extra options here.
ifeq ($(USE_LDOPT),)
  USE_LDOPT = 
endif

# Enable this if you want link time optimizations (LTO).
ifeq ($(USE_LTO),)
  USE_LTO = yes
endif

# Enable this if you want to see the full log while compiling.
ifeq ($(USE_VERBOSE_COMPILE),)
  USE_VERBOSE_COMPILE = no
endif

# If enabled, this option makes the build process faster by not compiling
# modules not used in the current configuration.
ifeq ($(USE_SMART_BUILD),)
  USE_SMART_BUILD = yes
endif


# Stack size to be allocated to the Cortex-M process stack. This stack is
# the stack used by the main() thread.
ifeq ($(USE_PROCESS_STACKSIZE),)
  USE_PROCESS_STACKSIZE = 0x400
endif

# Stack size to the allocated to the Cortex-M main/exceptions stack. This
# stack is used for processing interrupts and exceptions.
ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
  USE_EXCEPTIONS_STACKSIZE = 0x400
endif

# Enables the use of FPU (no, softfp, hard).
ifeq ($(USE_FPU),)
  USE_FPU = no
endif

# FPU-related options.
ifeq ($(USE_FPU_OPT),)
  USE_FPU_OPT = -mfloat-abi=$(USE_FPU) -mfpu=fpv4-sp-d16
endif

# Define project name here
PROJECT = canboard

# Target settings.
MCU  = cortex-m3

# Imported source files and paths.
CHIBIOS  := ./ChibiOS
CONFDIR  := ./cfg
BUILDDIR := ./build
DEPDIR   := ./.dep

# Licensing files.
include $(CHIBIOS)/os/license/license.mk
# Startup files.
include $(CHIBIOS)/os/common/startup/ARMCMx/compilers/GCC/mk/startup_stm32f1xx.mk
# HAL-OSAL files (optional).
include $(CHIBIOS)/os/hal/hal.mk
include $(CHIBIOS)/os/hal/ports/STM32/STM32F1xx/platform.mk
include $(CHIBIOS)/os/hal/boards/STM32F103C8_MINIMAL/board.mk
include $(CHIBIOS)/os/hal/osal/rt-nil/osal.mk
# RTOS files (optional).
include $(CHIBIOS)/os/rt/rt.mk
include $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC/mk/port_v7m.mk
# Auto-build files in ./source recursively.
include $(CHIBIOS)/tools/mk/autobuild.mk
# Other files (optional).
include $(CHIBIOS)/test/lib/test.mk
include $(CHIBIOS)/test/rt/rt_test.mk
include $(CHIBIOS)/os/hal/lib/streams/streams.mk
#include $(CHIBIOS)/test/oslib/oslib_test.mk

# Define linker script file here
LDSCRIPT= $(CHIBIOS)/os/common/startup/ARMCMx/compilers/GCC/ld/STM32F103x8.ld

# C sources that can be compiled in ARM or THUMB mode depending on the global
# setting.
CSRC = $(ALLCSRC) \
       $(TESTSRC)

# C++ sources that can be compiled in ARM or THUMB mode depending on the global
# setting.
CPPSRC = $(ALLCPPSRC) \
         main.cpp \
         can.cpp \
         adc.cpp \
         out.cpp \
         digital.cpp \
         spi.cpp

# List ASM source files here.
ASMSRC = $(ALLASMSRC)

# List ASM with preprocessor source files here.
ASMXSRC = $(ALLXASMSRC)

# Inclusion directories.
INCDIR = $(CONFDIR) $(ALLINC) $(TESTINC)

# Define C warning options here.
CWARN = -Wall -Wextra -Wundef -Wstrict-prototypes

# Define C++ warning options here.
CPPWARN = -Wall -Wextra -Wundef -Werror=switch

# Define the C++ compiler and linker options
CXXFLAGS = $(USE_OPT) $(USE_CPPOPT) $(INCDIR:%=-I%) $(CPPWARN)


RULESPATH = $(CHIBIOS)/os/common/startup/ARMCMx/compilers/GCC/mk
include $(RULESPATH)/arm-none-eabi.mk
include $(RULESPATH)/rules.mk