blob: 475a1f505449ebbbe609af608190bc4e79ed089e [file] [log] [blame]
# Configures CMake for using GCC, this script is re-used by several
# GCC-based toolchains
set(CMAKE_C_COMPILER ${CROSS_COMPILE}gcc CACHE INTERNAL " " FORCE)
set(CMAKE_OBJCOPY ${CROSS_COMPILE}objcopy CACHE INTERNAL " " FORCE)
set(CMAKE_OBJDUMP ${CROSS_COMPILE}objdump CACHE INTERNAL " " FORCE)
#set(CMAKE_LINKER ${CROSS_COMPILE}ld CACHE INTERNAL " " FORCE) # Not in use yet
set(CMAKE_AR ${CROSS_COMPILE}ar CACHE INTERNAL " " FORCE)
set(CMAKE_RANLILB ${CROSS_COMPILE}ranlib CACHE INTERNAL " " FORCE)
set(CMAKE_READELF ${CROSS_COMPILE}readelf CACHE INTERNAL " " FORCE)
set(CMAKE_GDB ${CROSS_COMPILE}gdb CACHE INTERNAL " " FORCE)
assert_exists(CMAKE_READELF)
if(CONFIG_CPLUSPLUS)
set(cplusplus_compiler ${CROSS_COMPILE}g++)
else()
if(EXISTS ${CROSS_COMPILE}g++)
set(cplusplus_compiler ${CROSS_COMPILE}g++)
else()
# When the toolchain doesn't support C++, and we aren't building
# with C++ support just set it to something so CMake doesn't
# crash, it won't actually be called
set(cplusplus_compiler ${CMAKE_C_COMPILER})
endif()
endif()
set(CMAKE_CXX_COMPILER ${cplusplus_compiler} CACHE INTERNAL " " FORCE)
set(NOSTDINC "")
foreach(file_name include include-fixed)
execute_process(
COMMAND ${CMAKE_C_COMPILER} --print-file-name=${file_name}
OUTPUT_VARIABLE _OUTPUT
)
string(REGEX REPLACE "\n" "" _OUTPUT ${_OUTPUT})
if(MSYS)
# TODO: Remove this when
# https://github.com/zephyrproject-rtos/zephyr/issues/4687 is
# resolved
execute_process(
COMMAND cygpath -u ${_OUTPUT}
OUTPUT_VARIABLE _OUTPUT
)
string(REGEX REPLACE "\n" "" _OUTPUT ${_OUTPUT})
endif()
list(APPEND NOSTDINC ${_OUTPUT})
endforeach()
include($ENV{ZEPHYR_BASE}/cmake/gcc-m-cpu.cmake)
if("${ARCH}" STREQUAL "arm")
list(APPEND TOOLCHAIN_C_FLAGS
-mthumb
-mcpu=${GCC_M_CPU}
)
include($ENV{ZEPHYR_BASE}/cmake/fpu-for-gcc-m-cpu.cmake)
if(CONFIG_FLOAT)
list(APPEND TOOLCHAIN_C_FLAGS -mfpu=${FPU_FOR_${GCC_M_CPU}})
if (CONFIG_FP_SOFTABI)
list(APPEND TOOLCHAIN_C_FLAGS -mfloat-abi=soft)
elseif(CONFIG_FP_HARDABI)
list(APPEND TOOLCHAIN_C_FLAGS -mfloat-abi=hard)
endif()
endif()
elseif("${ARCH}" STREQUAL "arc")
list(APPEND TOOLCHAIN_C_FLAGS
-mcpu=${GCC_M_CPU}
)
endif()
execute_process(
COMMAND ${CMAKE_C_COMPILER} ${TOOLCHAIN_C_FLAGS} --print-libgcc-file-name
OUTPUT_VARIABLE LIBGCC_DIR
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${CMAKE_C_COMPILER} ${TOOLCHAIN_C_FLAGS} --print-multi-directory
OUTPUT_VARIABLE NEWLIB_DIR
OUTPUT_STRIP_TRAILING_WHITESPACE
)
get_filename_component(LIBGCC_DIR ${LIBGCC_DIR} DIRECTORY)
assert(LIBGCC_DIR "LIBGCC_DIR not found")
LIST(APPEND LIB_INCLUDE_DIR -L${LIBGCC_DIR})
LIST(APPEND TOOLCHAIN_LIBS gcc)
set(LIBC_INCLUDE_DIR ${SYSROOT_DIR}/include)
set(LIBC_LIBRARY_DIR ${SYSROOT_DIR}/lib/${NEWLIB_DIR})
# For CMake to be able to test if a compiler flag is supported by the
# toolchain we need to give CMake the necessary flags to compile and
# link a dummy C file.
#
# CMake checks compiler flags with check_c_compiler_flag() (Which we
# wrap with target_cc_option() in extentions.cmake)
foreach(isystem_include_dir ${NOSTDINC})
list(APPEND isystem_include_flags -isystem ${isystem_include_dir})
endforeach()
set(CMAKE_REQUIRED_FLAGS -nostartfiles -nostdlib ${isystem_include_flags} -Wl,--unresolved-symbols=ignore-in-object-files)
string(REPLACE ";" " " CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")