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CMakeLists.txt
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CMakeLists.txt
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#/*
# * Description : CMake is an open-source, cross-platform family of tools
# * designed to build, test and package software.
# * Usage : CMake is used to control the software compilation process
# * using simple platform and compiler independent
# * configuration files, and generate native makefiles
# * and workspaces that can be used in the compiler environment
# * of your choice.
# * Author : Baron Leonardo <mohamedayman.fcis@zoho.com>
# * License : Copyright (C) 2016 RTOS From Scratch
# *
# *
# * This program is free software: you can redistribute it and/or modify
# * it under the terms of the GNU General Public License as published by
# * the Free Software Foundation, either version 3 of the License, or
# * (at your option) any later version.
# *
# * This program is distributed in the hope that it will be useful,
# * but WITHOUT ANY WARRANTY; without even the implied warranty of
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# * GNU General Public License for more details.
# *
# * You should have received a copy of the GNU General Public License
# * along with this program. If not, see <http://www.gnu.org/licenses/>.
# */
cmake_minimum_required(VERSION 3.2)
###################### Pre-Project configs ######################
# make the projetc name is as the same as current folder name
get_filename_component(Curr_dir ${CMAKE_CURRENT_SOURCE_DIR} NAME)
string(REPLACE " " "_" Curr_dir ${Curr_dir})
SET(PROJ_PATH ${CMAKE_CURRENT_SOURCE_DIR})
SET(CMAKE_SOURCE_DIR src)
SET(PROJECT_NAME ${Curr_dir})
SET(RFS_PARTS Kernel Drivers DataStructures Misc FileSystem)
string (REPLACE ";" " " RFS_PARTS_STR "${RFS_PARTS}")
# `config.h` used to pass options from `CMake` into `macros`
SET(CONFIG_HEADER_PATH "${PROJ_PATH}/Misc/src")
# clear `config.h` file
file(WRITE ${CONFIG_HEADER_PATH}/config.h "")
#################################################################
################## Compile RFS components First ##################
if(${RFS_TESTING_${PROJECT_NAME}})
# include the RFS parts
# build every part in its build folder
foreach(part ${RFS_PARTS})
add_subdirectory(${part})
unset(RFS_TESTING_${part} CACHE) # remove `TESTING` option from the subdirectories
endforeach(part ${RFS_PARTS})
endif(${RFS_TESTING_${PROJECT_NAME}})
#################################################################
######################## Toolchain paths ########################
SET(ARM_TOOLCHAIN_BIN_PATH /usr/bin)
SET(CMAKE_FIND_ROOT_PATH /usr/arm-none-eabi)
# Both -> the host system paths and the paths in CMAKE_FIND_ROOT_PATH will be searched
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY BOTH)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE BOTH)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE BOTH)
#################################################################
####################### Toolchain configs #######################
SET(CMAKE_SYSTEM_NAME Generic)
SET(CMAKE_SYSTEM_PROCESSOR arm)
SET(CMAKE_C_COMPILER ${ARM_TOOLCHAIN_BIN_PATH}/arm-none-eabi-gcc CACHE STRING "CC" FORCE)
SET(CMAKE_CXX_COMPILER ${ARM_TOOLCHAIN_BIN_PATH}/arm-none-eabi-g++ CACHE STRING "CXX" FORCE)
SET(CMAKE_ASM_COMPILER ${ARM_TOOLCHAIN_BIN_PATH}/arm-none-eabi-as CACHE STRING "ASM" FORCE)
#################################################################
################# check important files existance ################
if(${RFS_TESTING_${PROJECT_NAME}})
if( NOT EXISTS ${PROJ_PATH}/tm4c123gh6pm.lds)
# check `tm4c123gh6pm.lds` existance
MESSAGE(FATAL_ERROR "Can't find `tm4c123gh6pm.lds` linker file in ${PROJ_PATH}.")
endif(NOT EXISTS ${PROJ_PATH}/tm4c123gh6pm.lds)
# check `startup.c` existance
if( NOT EXISTS ${PROJ_PATH}/startup.c )
MESSAGE(FATAL_ERROR "Can't find `startup.c` file in ${PROJ_PATH}.")
endif( NOT EXISTS ${PROJ_PATH}/startup.c )
endif(${RFS_TESTING_${PROJECT_NAME}})
# check `tm4c123gh6pm.h` existance
if( NOT EXISTS ${PROJ_PATH}/tm4c123gh6pm.h )
MESSAGE(FATAL_ERROR "Can't find `tm4c123gh6pm.h` file in ${PROJ_PATH}.")
endif( NOT EXISTS ${PROJ_PATH}/tm4c123gh6pm.h )
#################################################################
######################## My Sources files #######################
# `lib` path
SET( CMAKE_LIBRARY_PATH ${PROJ_PATH}/lib )
# `h` headers path
FILE(GLOB_RECURSE ${PROJECT_NAME}_Headers ${CMAKE_LIBRARY_PATH}/*.h)
# other sources
SET ( Other_${PROJECT_NAME}_Sources ${PROJ_PATH}/tm4c123gh6pm.h )
# if in testing mode, add `main.c` and `startup.c`
if(${RFS_TESTING_${PROJECT_NAME}})
SET( ${PROJECT_NAME}_main ${PROJ_PATH}/main.c )
SET( Other_${PROJECT_NAME}_Sources ${Other_${PROJECT_NAME}_Sources} ${PROJ_PATH}/startup.c )
FILE(GLOB_RECURSE ${PROJECT_NAME}_LIBS ${CMAKE_LIBRARY_PATH}/*.a )
endif(${RFS_TESTING_${PROJECT_NAME}})
SET (${PROJECT_NAME}_Sources ${${PROJECT_NAME}_Headers}
${Other_${PROJECT_NAME}_Sources}
${${PROJECT_NAME}_main})
#################################################################
################## Compiler and linker configs ##################
# cahce force -> used to force show in cmake-gui
#TODO: need to handle -MF -MT
set(FLAGS "-mcpu=cortex-m4 -march=armv7e-m -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -ffunction-sections -fdata-sections -g -gdwarf-3 -gstrict-dwarf -Wall -DPC_COMMUNICATION")
set(CMAKE_C_FLAGS "${FLAGS} -MD -std=c99 -MMD -MP" CACHE STRING "C flags" FORCE)
set(CMAKE_EXE_LINKER_FLAGS "-Wl,-Map,'${PROJECT_NAME}.map' -Wl,-T'${PROJ_PATH}/tm4c123gh6pm.lds' --specs=nosys.specs -Wl,--start-group -l'gcc' -l'nosys' -l'c' -Wl,--end-group" CACHE STRING "Linker flags" FORCE)
#################################################################
######################## Project configs ########################
project(${PROJECT_NAME} C CXX)
# treat `assembly` files as `C` files
set_property(SOURCE ${${PROJECT_NAME}_ASMSources} PROPERTY LANGUAGE C)
# include tm4c123gh6pm.h startup.c files
include_directories(${PROJ_PATH})
if(${RFS_TESTING_${PROJECT_NAME}})
# # include the RFS parts
# # build every part in its build folder
# add_subdirectory(Kernel ${PROJ_PATH}/Kernel/build)
# add_subdirectory(Drivers ${PROJ_PATH}/Drivers/build)
# add_subdirectory(DataStructures ${PROJ_PATH}/DataStructures/build)
# add_subdirectory(Misc ${PROJ_PATH}/Misc/build)
add_executable(${PROJECT_NAME}.elf $<TARGET_OBJECTS:Kernel>
$<TARGET_OBJECTS:Drivers>
$<TARGET_OBJECTS:DataStructures>
$<TARGET_OBJECTS:Misc>
$<TARGET_OBJECTS:FileSystem>
${${PROJECT_NAME}_Sources})
# link the output with the libraries in `lib` folder
target_link_libraries(${PROJECT_NAME}.elf ${${PROJECT_NAME}_LIBS})
# add custom command for converting .elf to .hex
# .hex file is the one which for uploading
# .elf file is the one which used for debugging
add_custom_command(TARGET ${PROJECT_NAME}.elf POST_BUILD COMMAND ${ARM_TOOLCHAIN_BIN_PATH}/arm-none-eabi-objcopy ARGS -O binary ${PROJECT_NAME}.elf ${PROJECT_NAME}.hex)
add_custom_target(upload lm4flash ${PROJECT_NAME}.hex DEPENDS ${PROJECT_NAME}.elf COMMENT "Uploading ...")
# else build this without linking
else(${RFS_TESTING_${PROJECT_NAME}})
add_library(${PROJECT_NAME} OBJECT ${${PROJECT_NAME}_Sources})
endif(${RFS_TESTING_${PROJECT_NAME}})
#################################################################
######################### CMake options #########################
# option for build and then upload
SET(RFS_BUILD_AND_UPLOAD False CACHE BOOL "Build then upload")
if(RFS_BUILD_AND_UPLOAD)
message(STATUS "Uploading...")
add_custom_command(TARGET ${PROJECT_NAME}.elf POST_BUILD COMMAND lm4flash ARGS ${PROJECT_NAME}.hex)
endif(RFS_BUILD_AND_UPLOAD)
# option for `testing parts of RFS`
SET(RFS_TESTING_${PROJECT_NAME} False CACHE BOOL "Turn on testing - include main.c")
if(${RFS_TESTING_${PROJECT_NAME}})
message(STATUS "---------------------")
message(STATUS "| Testing is ON ... |")
message(STATUS "---------------------")
endif(${RFS_TESTING_${PROJECT_NAME}})
# Enable/disable `ASSERT` system
SET(RFS_Misc_ASSERT True CACHE BOOL "Enable/Disable `ASSERT` system")
if(${RFS_Misc_ASSERT})
message(STATUS "`ASSERT` system is Enabled")
add_definitions( -DPC_COMMUNICATION )
endif(${RFS_Misc_ASSERT})
#################################################################
############################# Macros #############################
# Enable/disable `ASSERT` system
SET(RFS_SYS_UART_BAUDRATE "115200" CACHE STRING "set system UART baud rate")
SET_PROPERTY(CACHE RFS_SYS_UART_BAUDRATE PROPERTY STRINGS "110"
"300"
"600"
"1200"
"2400"
"4800"
"9600"
"14400"
"19200"
"28800"
"38400"
"56000"
"57600"
"115200"
"128000"
"153600"
"230400"
"256000"
"460800"
"921600")
file(APPEND ${CONFIG_HEADER_PATH}/config.h "#define PC_COMMUNICATION_BAUDRATE ${RFS_SYS_UART_BAUDRATE}\n")
# system clk speed
SET(RFS_SYS_clockSpeed "80" CACHE STRING "set system clock speed in MHz")
SET_PROPERTY(CACHE RFS_SYS_clockSpeed PROPERTY STRINGS "80"
"50"
"40"
"25"
"20"
"16"
"10"
"8"
"5"
"4")
file(APPEND ${CONFIG_HEADER_PATH}/config.h "#define SYS_CLK_SPEED_IN_MHZ ${RFS_SYS_clockSpeed}\n")
##################################################################
######################### clear config ##########################
if(${RFS_TESTING_${PROJECT_NAME}})
# TODO: clean all builds
# list of files that will be cleaned as a part of "make clean" stage
set_property(DIRECTORY APPEND PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${PROJECT_NAME}.hex ${PROJECT_NAME}.map)
file ( WRITE ${CMAKE_BINARY_DIR}/clean-cmake-files.cmake
"# clean-cmake-files.cmake\n"
"set(cmake_generated ${CMAKE_BINARY_DIR}/CMakeCache.txt\n"
" ${CMAKE_BINARY_DIR}/cmake_install.cmake\n"
" ${CMAKE_BINARY_DIR}/Makefile\n"
" ${CMAKE_BINARY_DIR}/CMakeFiles\n"
" ${CMAKE_BINARY_DIR}/clean-cmake-files.cmake\n"
")\n"
"foreach(part ${RFS_PARTS_STR})\n"
" SET(cmake_generated \${cmake_generated} ${CMAKE_BINARY_DIR}/\${part})\n"
"endforeach(part ${RFS_PARTS_STR})\n"
"\n"
"foreach(file \${cmake_generated})\n"
" MESSAGE(STATUS \"remove: \${file}\")\n"
" if (EXISTS \${file})\n"
" file(REMOVE_RECURSE \${file})\n"
" endif()\n"
"endforeach(file)\n" )
add_custom_target(clean-cmake-files
COMMAND ${CMAKE_COMMAND} -P ${CMAKE_BINARY_DIR}/clean-cmake-files.cmake
)
add_custom_target(clean-all
COMMAND ${CMAKE_BUILD_TOOL} clean
COMMAND ${CMAKE_COMMAND} -P ${CMAKE_BINARY_DIR}/clean-cmake-files.cmake
)
endif(${RFS_TESTING_${PROJECT_NAME}})
#################################################################