CMakeLists_appl.txt

# Copyright (c) 2017, Franz Hollerer.
# SPDX-License-Identifier: MIT

# -------------------------------------------- minimum cmake version ---

# We tested the build with cmake 3.5, but it probably also works with
# older versions.
cmake_minimum_required(VERSION 3.5)

# ------------------------------------------ build process debugging ---

set(CMAKE_VERBOSE_MAKEFILE false)

# ---------------------------------------- project specific settings ---

set(TARGET_NAME "project_template_appl")

set(CMAKE_SOURCE_DIR "${PROJECT_ROOT_DIR}/appl")
set(HODEA_ROOT_DIR "${PROJECT_ROOT_DIR}/hodea-lib")
set(CMSIS_ROOT_DIR "${PROJECT_ROOT_DIR}/hodea-stm32f0-vpkg/CMSIS")

add_executable(${TARGET_NAME}
    "${CMAKE_SOURCE_DIR}/main.cpp"
    "${CMAKE_SOURCE_DIR}/system_stm32f0xx.cpp"
    "${CMAKE_SOURCE_DIR}/gcc/startup_stm32f091xc.s"
    "${CMAKE_SOURCE_DIR}/gcc/bootloader_binary.s"
    "${CMAKE_SOURCE_DIR}/../share/boot_appl_if.cpp"
    "${HODEA_ROOT_DIR}/hodea/device/stm32/retarget_stdout_uart.cpp"
    "${HODEA_ROOT_DIR}/hodea/rte/setup.cpp"
    )

target_include_directories(${TARGET_NAME} PRIVATE
    "${CMAKE_SOURCE_DIR}"
    "${HODEA_ROOT_DIR}"
    "${CMSIS_ROOT_DIR}/Include"
    "${CMSIS_ROOT_DIR}/Device/ST/STM32F0xx/Include"
    )

add_definitions(-DSTM32F091xC)

# ------------------------------------------------ compiler settings ---

set(CMAKE_SYSTEM_NAME Generic)
set(TARGET_TRIPLET "arm-none-eabi")
set(CMAKE_ASM_COMPILER "${TARGET_TRIPLET}-gcc")
set(CMAKE_C_COMPILER "${TARGET_TRIPLET}-gcc")
set(CMAKE_CXX_COMPILER "${TARGET_TRIPLET}-g++")
set(CMAKE_OBJCOPY "${TARGET_TRIPLET}-objcopy")

enable_language(ASM)

set(CMAKE_EXECUTABLE_SUFFIX ".elf")

set(CMAKE_C_FLAGS_DEBUG "-O0")
set(CMAKE_C_FLAGS_RELEASE "-O3")
set(CMAKE_CXX_FLAGS_DEBUG "-O0")
set(CMAKE_CXX_FLAGS_RELEASE "-O3")

set(CMAKE_C_FLAGS "\
    -g -Wall -Wextra -ffreestanding -ffunction-sections -fdata-sections \
    -fno-common -mcpu=cortex-m0 -mthumb -std=c11 \
    -fno-rtti -fno-exceptions"
    )

set(CMAKE_CXX_FLAGS "\
    -g -Wall -Wextra -ffreestanding -ffunction-sections -fdata-sections \
    -fno-common -mcpu=cortex-m0 -mthumb -std=c++11 \
    -fno-rtti -fno-exceptions"
    )

set(CMAKE_ASM_FLAGS ${CMAKE_C_FLAGS})

set(CMAKE_EXE_LINKER_FLAGS "\
    --specs=nosys.specs --specs=nano.specs -Xlinker --gc-sections \
    -T${CMAKE_SOURCE_DIR}/gcc/stm32f091rc_appl.ld \
    -Xlinker -Map=${TARGET_NAME}.map"
    )

# workaround to expand __FILE__ to the file's basename instead of the
# file name with absolute path.

set(CMAKE_C_FLAGS "\
    ${CMAKE_C_FLAGS} \
    -Wno-builtin-macro-redefined \
    -D__FILE__='\"$(shell basename $<)\"'"
    )

set(CMAKE_CXX_FLAGS "\
    ${CMAKE_CXX_FLAGS} \
    -Wno-builtin-macro-redefined \
    -D__FILE__='\"$(shell basename $<)\"'"
    )

# ----------------------------------------------- .bin and .hex file ---

add_custom_command(TARGET ${TARGET_NAME} POST_BUILD COMMAND
    ${CMAKE_OBJCOPY} -Obinary ${TARGET_NAME}.elf ${TARGET_NAME}.bin
    )
add_custom_command(TARGET ${TARGET_NAME} POST_BUILD COMMAND
    ${CMAKE_OBJCOPY} -Oihex ${TARGET_NAME}.elf ${TARGET_NAME}.hex
    )