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cmake: Uniform target compile/link flags

This commit is contained in:
Yuri D'Elia 2022-10-01 19:01:32 +02:00
parent 9288462b59
commit 655b403c14
1 changed files with 34 additions and 39 deletions
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73
CMakeLists.txt
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@ -94,8 +94,18 @@ endif()
# Global Compiler & Linker Configuration
#
# include symbols
add_compile_options(-g)
# enable warnings
add_compile_options(-Wall -Wextra -Wno-expansion-to-defined -Wsign-compare)
# default standards for all targets
set(CMAKE_C_STANDARD 11)
set(CMAKE_CXX_STANDARD 17)
# support _DEBUG macro (some code uses to recognize debug builds)
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
add_compile_definitions(_DEBUG)
endif()
#
# Firmware - get file lists.
@ -213,25 +223,35 @@ foreach(_FILE ${AVR_SOURCES})
set_property(SOURCE ${_FILE} APPEND_STRING PROPERTY COMPILE_FLAGS "-frandom-seed=core/${_BASE}.o")
endforeach()
# optimizations
#
# Target configuration
#
if(CMAKE_CROSSCOMPILING)
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
add_compile_options(-Og)
else()
add_compile_options(-Os)
endif()
# default optimization flags
set(CMAKE_CXX_FLAGS_DEBUG "-Og -g")
set(CMAKE_CXX_FLAGS_RELEASE "-Os -g -DNDEBUG")
set(CMAKE_C_FLAGS_DEBUG ${CMAKE_CXX_FLAGS_DEBUG})
set(CMAKE_C_FLAGS_RELEASE ${CMAKE_CXX_FLAGS_RELEASE})
# mcu related settings
set(MCU_FLAGS -mmcu=atmega2560 -DF_CPU=16000000L -DARDUINO=10819 -DARDUINO_AVR_PRUSA_EINSY_RAMBO -DARDUINO_ARCH_AVR)
add_compile_options(${MCU_FLAGS})
# mcu and target-related settings
add_compile_options(-mmcu=atmega2560 -DF_CPU=16000000L -DARDUINO=10819 -DARDUINO_AVR_PRUSA_EINSY_RAMBO -DARDUINO_ARCH_AVR)
add_link_options(-mmcu=atmega2560 -Wl,-u,vfprintf -lprintf_flt -lm)
add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-fno-exceptions>)
# disable some C++ language features
add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-fno-threadsafe-statics>)
add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-fno-rtti>)
add_compile_options(-Wall -Wextra -Wno-expansion-to-defined -ffunction-sections -fdata-sections -MMD -flto -fno-fat-lto-objects)
# disable exceptions
add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-fno-exceptions>)
add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-fno-unwind-tables>)
# split and gc sections
add_link_options(-Os -g -flto -Wl,--gc-sections -mmcu=atmega2560 -Wl,-u,vfprintf -lprintf_flt -lm )
add_compile_options(-ffunction-sections -fdata-sections)
add_link_options(-Wl,--gc-sections)
# LTO (with custom options)
add_compile_options(-flto -fno-fat-lto-objects)
add_link_options(-flto)
# Create this target before we apply the GC options
add_library(avr_core STATIC ${AVR_SOURCES})
@ -239,31 +259,8 @@ if(CMAKE_CROSSCOMPILING)
${PRUSA_BOARDS_DIR}/cores/prusa_einsy_rambo/
${PRUSA_BOARDS_DIR}/variants/prusa_einsy_rambo/
)
# disable exceptions and related metadata
add_compile_options(-fno-unwind-tables)
add_link_options(-Wl,--defsym,__exidx_start=0,--defsym,__exidx_end=0)
else()
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
add_compile_options(-O0)
else()
add_compile_options(-O2)
endif()
endif()
# enable all warnings (well, not all, but some)
add_compile_options(-Wsign-compare)
add_compile_options($<$<COMPILE_LANGUAGE:C>:-std=gnu11>)
# support _DEBUG macro (some code uses to recognize debug builds)
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
add_compile_definitions(_DEBUG)
endif()
# Setup language resources:
# file(GLOB LANG_VARIANTS RELATIVE ${PROJECT_SOURCE_DIR}/lang/po ${PROJECT_SOURCE_DIR}/lang/po/Firmware_??.po)
# string(REPLACE "Firmware_" "" LANG_VARIANTS "${LANG_VARIANTS}")
@ -281,8 +278,6 @@ add_dependencies(ALL_FIRMWARE ALL_ENGLISH ALL_MULTILANG)
function(add_base_binary variant_name)
add_executable(${variant_name} ${FW_SOURCES} ${FW_HEADERS} ${VARIANT_CFG_FILE})
set_target_properties(${variant_name} PROPERTIES CXX_STANDARD 17)
target_include_directories(${variant_name} PRIVATE
${PRUSA_BOARDS_DIR}/cores/prusa_einsy_rambo/
${PRUSA_BOARDS_DIR}/variants/prusa_einsy_rambo/