93 lines
4.5 KiB
CMake
93 lines
4.5 KiB
CMake
# This function provides a set of specific flags for each supported board
|
|
# depending on the processor type. The objective is to optimize for size.
|
|
# Thus, all of the following flags are chosen carefully to reduce binary
|
|
# footprints.
|
|
|
|
# Set generic minimization flags for all platforms.
|
|
# These flags are the same for all cross-compilation cases and they are
|
|
# mainly to reduce the binary footprint.
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Os -s -fdata-sections -ffunction-sections")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fomit-frame-pointer -fno-unwind-tables")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-asynchronous-unwind-tables -fvisibility=hidden")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fshort-enums -finline-small-functions")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -findirect-inlining -fno-common")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fmerge-all-constants -fno-ident")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-unroll-loops -fno-math-errno")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-stack-protector")
|
|
set(CMAKE_OPENBLAS_FLAGS "${CMAKE_CXX_FLAGS}") # OpenBLAS does not supoport flto
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto")
|
|
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--hash-style=gnu -Wl,--build-id=none")
|
|
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,norelro")
|
|
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--gc-sections")
|
|
## Keep the following flag in comment, they might be relevant in the case of MCU's
|
|
#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wl,-nmagic,-Bsymbolic -nostartfiles")
|
|
|
|
set(BOARD_NAME "" CACHE STRING "Specify Board name to optimize for.")
|
|
string(TOUPPER ${BOARD_NAME} BOARD)
|
|
|
|
# Set specific platforms CMAKE CXX flags.
|
|
if(BOARD MATCHES "RPI0" OR BOARD MATCHES "RPI1" OR BOARD MATCHES "ARM11")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mtune=arm1176jzf-s")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcpu=arm1176jzf-s -mfloat-abi=hard -mfpu=vfp")
|
|
set(OPENBLAS_TARGET "ARMV6")
|
|
set(OPENBLAS_BINARY "32")
|
|
elseif(BOARD MATCHES "RPI2" OR BOARD MATCHES "CORTEXA7")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mtune=cortex-a7")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfloat-abi=hard -mfpu=neon-vfpv4")
|
|
set(OPENBLAS_TARGET "ARMV7")
|
|
set(OPENBLAS_BINARY "32")
|
|
elseif(BOARD MATCHES "CORTEXA8")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mtune=cortex-a8")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfloat-abi=hard -mfpu=neon")
|
|
set(OPENBLAS_TARGET "ARMV7")
|
|
set(OPENBLAS_BINARY "32")
|
|
elseif(BOARD MATCHES "CORTEXA9")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mtune=cortex-a9")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfloat-abi=hard -mfpu=neon")
|
|
set(OPENBLAS_TARGET "CORTEXA9")
|
|
set(OPENBLAS_BINARY "32")
|
|
elseif(BOARD MATCHES "CORTEXA15")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mtune=cortex-a15")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfloat-abi=hard -mfpu=neon")
|
|
set(OPENBLAS_TARGET "CORTEXA15")
|
|
set(OPENBLAS_BINARY "32")
|
|
elseif(BOARD MATCHES "RPI3" OR BOARD MATCHES "CORTEXA53")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mtune=cortex-a53 -ftree-vectorize")
|
|
set(OPENBLAS_TARGET "CORTEXA53")
|
|
set(OPENBLAS_BINARY "64")
|
|
elseif(BOARD MATCHES "RPI4" OR BOARD MATCHES "CORTEXA72")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mtune=cortex-a72 -ftree-vectorize")
|
|
set(OPENBLAS_TARGET "CORTEXA72")
|
|
set(OPENBLAS_BINARY "64")
|
|
elseif(BOARD MATCHES "JETSONAGX" OR BOARD MATCHES "CORTEXA76")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mtune=cortex-a76 -ftree-vectorize")
|
|
set(OPENBLAS_TARGET "CORTEXA76")
|
|
set(OPENBLAS_BINARY "64")
|
|
elseif(BOARD MATCHES "BV")
|
|
set(OPENBLAS_TARGET "RISCV64_GENERIC")
|
|
set(OPENBLAS_BINARY "64")
|
|
elseif(BOARD MATCHES "C906")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mtune=thead-c906")
|
|
set(OPENBLAS_TARGET "RISCV64_GENERIC")
|
|
set(OPENBLAS_BINARY "64")
|
|
elseif(BOARD MATCHES "x280")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mtune=sifive-x280")
|
|
set(OPENBLAS_TARGET "x280")
|
|
set(OPENBLAS_BINARY "64")
|
|
elseif(BOARD MATCHES "KATAMI")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=pentium3")
|
|
set(OPENBLAS_TARGET "KATAMI")
|
|
set(OPENBLAS_BINARY "32")
|
|
elseif(BOARD MATCHES "COPPERMINE")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=pentium3")
|
|
set(OPENBLAS_TARGET "COPPERMINE")
|
|
set(OPENBLAS_BINARY "32")
|
|
elseif(BOARD MATCHES "NORTHWOOD")
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=pentium4")
|
|
set(OPENBLAS_TARGET "NORTHWOOD")
|
|
set(OPENBLAS_BINARY "32")
|
|
elseif(BOARD)
|
|
## TODO: update documentation with a list of the supported boards.
|
|
message(FATAL_ERROR "Given BOARD_NAME is not known; please choose a supported board from the list")
|
|
endif()
|