157 lines
7.0 KiB
CMake
Executable File
157 lines
7.0 KiB
CMake
Executable File
##################################################################################
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# "THE ANY BEVERAGE-WARE LICENSE" (Revision 42 - based on beer-ware
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# license):
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# <dev@layer128.net> wrote this file. As long as you retain this notice
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# you can do whatever you want with this stuff. If we meet some day, and
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# you think this stuff is worth it, you can buy me a be(ve)er(age) in
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# return. (I don't like beer much.)
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#
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# Matthias Kleemann
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##################################################################################
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##################################################################################
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# Sample CMakeLists.txt for a simple AVR project based on the toolchain
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##################################################################################
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cmake_minimum_required(VERSION 2.8)
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### TOOLCHAIN SETUP AREA #################################################
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# Set any variables used in the toolchain prior project() call. In that
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# case they are already set and used.
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##########################################################################
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##################################################################################
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# tools to be used for programming the AVR
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##################################################################################
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set(AVR_UPLOADTOOL avrdude)
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set(AVR_PROGRAMMER avrispmkII)
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set(AVR_UPLOADTOOL_PORT usb)
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# AVR and fuses needs to be set
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set(AVR_MCU atmega8)
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set(AVR_H_FUSE 0xd9)
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set(AVR_L_FUSE 0xc3)
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### END TOOLCHAIN SETUP AREA #############################################
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##########################################################################
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# name your project
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##########################################################################
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project(ece312)
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##################################################################################
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# status messages
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##################################################################################
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message(STATUS "Current uploadtool is: ${AVR_UPLOADTOOL}")
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message(STATUS "Current programmer is: ${AVR_PROGRAMMER}")
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message(STATUS "Current upload port is: ${AVR_UPLOADTOOL_PORT}")
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message(STATUS "Current uploadtool options are: ${AVR_UPLOADTOOL_OPTIONS}")
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message(STATUS "Current MCU is set to: ${AVR_MCU}")
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message(STATUS "Current H_FUSE is set to: ${AVR_H_FUSE}")
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message(STATUS "Current L_FUSE is set to: ${AVR_L_FUSE}")
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##################################################################################
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# set build type, if not already set at cmake command line
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##################################################################################
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if(NOT CMAKE_BUILD_TYPE)
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set(CMAKE_BUILD_TYPE Release)
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endif(NOT CMAKE_BUILD_TYPE)
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##################################################################################
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# needs to be defined for AVR toolchain
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##################################################################################
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set(MCU_SPEED "4000000UL")
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##################################################################################
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# some cmake cross-compile necessities
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##################################################################################
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if(DEFINED ENV{AVR_FIND_ROOT_PATH})
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set(CMAKE_FIND_ROOT_PATH $ENV{AVR_FIND_ROOT_PATH})
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else(DEFINED ENV{AVR_FIND_ROOT_PATH})
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if(EXISTS "/opt/local/avr")
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set(CMAKE_FIND_ROOT_PATH "/opt/local/avr")
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elseif(EXISTS "/usr/avr")
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set(CMAKE_FIND_ROOT_PATH "/usr/avr")
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elseif(EXISTS "/usr/lib/avr")
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set(CMAKE_FIND_ROOT_PATH "/usr/lib/avr")
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elseif(EXISTS "/usr/local/CrossPack-AVR")
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set(CMAKE_FIND_ROOT_PATH "/usr/local/CrossPack-AVR")
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else(EXISTS "/opt/local/avr")
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message(FATAL_ERROR "Please set AVR_FIND_ROOT_PATH in your environment.")
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endif(EXISTS "/opt/local/avr")
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endif(DEFINED ENV{AVR_FIND_ROOT_PATH})
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set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
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set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
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set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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# not added automatically, since CMAKE_SYSTEM_NAME is "generic"
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set(CMAKE_SYSTEM_INCLUDE_PATH "${CMAKE_FIND_ROOT_PATH}/include")
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set(CMAKE_SYSTEM_LIBRARY_PATH "${CMAKE_FIND_ROOT_PATH}/lib")
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##################################################################################
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# status messages for generating
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##################################################################################
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message(STATUS "Set CMAKE_FIND_ROOT_PATH to ${CMAKE_FIND_ROOT_PATH}")
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message(STATUS "Set CMAKE_SYSTEM_INCLUDE_PATH to ${CMAKE_SYSTEM_INCLUDE_PATH}")
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message(STATUS "Set CMAKE_SYSTEM_LIBRARY_PATH to ${CMAKE_SYSTEM_LIBRARY_PATH}")
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##################################################################################
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# set compiler options for build types
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##################################################################################
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if(CMAKE_BUILD_TYPE MATCHES Release)
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set(CMAKE_C_FLAGS_RELEASE "-Os")
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set(CMAKE_CXX_FLAGS_RELEASE "-Os")
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endif(CMAKE_BUILD_TYPE MATCHES Release)
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if(CMAKE_BUILD_TYPE MATCHES RelWithDebInfo)
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set(CMAKE_C_FLAGS_RELWITHDEBINFO "-Os -save-temps -g -gdwarf-3 -gstrict-dwarf")
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set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-Os -save-temps -g -gdwarf-3 -gstrict-dwarf")
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endif(CMAKE_BUILD_TYPE MATCHES RelWithDebInfo)
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if(CMAKE_BUILD_TYPE MATCHES Debug)
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set(CMAKE_C_FLAGS_DEBUG "-O0 -save-temps -g -gdwarf-3 -gstrict-dwarf")
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set(CMAKE_CXX_FLAGS_DEBUG "-O0 -save-temps -g -gdwarf-3 -gstrict-dwarf")
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endif(CMAKE_BUILD_TYPE MATCHES Debug)
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##################################################################################
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# compiler options for all build types
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##################################################################################
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add_definitions("-DF_CPU=${MCU_SPEED}")
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add_definitions("-fpack-struct")
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add_definitions("-fshort-enums")
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add_definitions("-Wall")
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add_definitions("-Werror")
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# http://gcc.gnu.org/onlinedocs/gcc-4.8.2/gcc/Alternate-Keywords.html#Alternate-Keywords
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# [...]-pedantic and other options cause warnings for many GNU C extensions. You can prevent such warnings within
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# one expression by writing __extension__ before the expression. __extension__ has no effect aside from this.[...]
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add_definitions("-pedantic")
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add_definitions("-pedantic-errors")
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add_definitions("-funsigned-char")
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add_definitions("-funsigned-bitfields")
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add_definitions("-ffunction-sections")
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add_definitions("-c")
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add_definitions("-std=gnu99")
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##################################################################################
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# add AVR executable
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##################################################################################
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add_avr_executable(
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main
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main.c
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)
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##################################################################################
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# add AVR library
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##################################################################################
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# add_avr_library(
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# <library-name>
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# <sources> <headers>
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# )
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##################################################################################
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# link library to executable
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# NOTE: It needs to be the elf target.
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##################################################################################
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# target_link_libraries(<executable-name>-${AVR_MCU}.elf <library-name>-${AVR_MCU})
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# OR easier
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#target_link_libraries(<executable-name> <library-name> <some-external-libary>)
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