blob: c579ea76dc12995053bf8da9ce828a7bfa93613d [file] [log] [blame]
# SPDX-License-Identifier: Apache-2.0
if(NOT TOOLCHAIN_ROOT)
if(DEFINED ENV{TOOLCHAIN_ROOT})
# Support for out-of-tree toolchain
set(TOOLCHAIN_ROOT $ENV{TOOLCHAIN_ROOT})
else()
# Default toolchain cmake file
set(TOOLCHAIN_ROOT ${ZEPHYR_BASE})
endif()
endif()
# Don't inherit compiler flags from the environment
foreach(var CFLAGS CXXFLAGS)
if(DEFINED ENV{${var}})
message(WARNING "The environment variable '${var}' was set to $ENV{${var}},
but Zephyr ignores flags from the environment. Use 'cmake -DEXTRA_${var}=$ENV{${var}}' instead.")
unset(ENV{${var}})
endif()
endforeach()
# Until we completely deprecate it
if(NOT DEFINED ENV{ZEPHYR_TOOLCHAIN_VARIANT})
if(DEFINED ENV{ZEPHYR_GCC_VARIANT})
message(WARNING "ZEPHYR_GCC_VARIANT is deprecated, please use ZEPHYR_TOOLCHAIN_VARIANT instead")
set(ZEPHYR_TOOLCHAIN_VARIANT $ENV{ZEPHYR_GCC_VARIANT})
endif()
endif()
if(NOT ZEPHYR_TOOLCHAIN_VARIANT)
if(DEFINED ENV{ZEPHYR_TOOLCHAIN_VARIANT})
set(ZEPHYR_TOOLCHAIN_VARIANT $ENV{ZEPHYR_TOOLCHAIN_VARIANT})
elseif(CROSS_COMPILE OR (DEFINED ENV{CROSS_COMPILE}))
set(ZEPHYR_TOOLCHAIN_VARIANT cross-compile)
endif()
endif()
# Until we completely deprecate it
if("${ZEPHYR_TOOLCHAIN_VARIANT}" STREQUAL "gccarmemb")
message(WARNING "gccarmemb is deprecated, please use gnuarmemb instead")
set(ZEPHYR_TOOLCHAIN_VARIANT "gnuarmemb")
endif()
# Host-tools don't unconditionally set TOOLCHAIN_HOME anymore,
# but in case Zephyr's SDK toolchain is used, set TOOLCHAIN_HOME
if("${ZEPHYR_TOOLCHAIN_VARIANT}" STREQUAL "zephyr")
set(TOOLCHAIN_HOME ${HOST_TOOLS_HOME})
endif()
set(TOOLCHAIN_ROOT ${TOOLCHAIN_ROOT} CACHE STRING "Zephyr toolchain root")
assert(TOOLCHAIN_ROOT "Zephyr toolchain root path invalid: please set the TOOLCHAIN_ROOT-variable")
set(ZEPHYR_TOOLCHAIN_VARIANT ${ZEPHYR_TOOLCHAIN_VARIANT} CACHE STRING "Zephyr toolchain variant")
assert(ZEPHYR_TOOLCHAIN_VARIANT "Zephyr toolchain variant invalid: please set the ZEPHYR_TOOLCHAIN_VARIANT-variable")
# Pick host system's toolchain if we are targeting posix
if(${ARCH} STREQUAL "posix")
if(NOT "${ZEPHYR_TOOLCHAIN_VARIANT}" STREQUAL "llvm")
set(ZEPHYR_TOOLCHAIN_VARIANT "host")
endif()
endif()
# Configure the toolchain based on what SDK/toolchain is in use.
include(${TOOLCHAIN_ROOT}/cmake/toolchain/${ZEPHYR_TOOLCHAIN_VARIANT}/generic.cmake)
# Configure the toolchain based on what toolchain technology is used
# (gcc, host-gcc etc.)
include(${TOOLCHAIN_ROOT}/cmake/compiler/${COMPILER}/generic.cmake OPTIONAL)
include(${TOOLCHAIN_ROOT}/cmake/linker/${LINKER}/generic.cmake OPTIONAL)
include(${TOOLCHAIN_ROOT}/cmake/bintools/${BINTOOLS}/generic.cmake OPTIONAL)