| # Copyright 2021 The Pigweed Authors |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| # use this file except in compliance with the License. You may obtain a copy of |
| # the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| # License for the specific language governing permissions and limitations under |
| # the License. |
| |
| import("//build_overrides/pigweed.gni") |
| |
| import("$dir_pw_assert/backend.gni") |
| import("$dir_pw_bloat/bloat.gni") |
| import("$dir_pw_boot/backend.gni") |
| import("$dir_pw_build/cc_library.gni") |
| import("$dir_pw_chrono/backend.gni") |
| import("$dir_pw_interrupt/backend.gni") |
| import("$dir_pw_log/backend.gni") |
| import("$dir_pw_log_string/backend.gni") |
| import("$dir_pw_malloc/backend.gni") |
| import("$dir_pw_sync/backend.gni") |
| import("$dir_pw_sys_io/backend.gni") |
| import("$dir_pw_thread/backend.gni") |
| import("$dir_pw_toolchain/arm_gcc/toolchains.gni") |
| import("$dir_pw_toolchain/generate_toolchain.gni") |
| import("$dir_pw_toolchain/host_clang/toolchains.gni") |
| import("$dir_pw_toolchain/host_gcc/toolchains.gni") |
| import("$dir_pw_unit_test/test.gni") |
| import("backend.gni") |
| import("freertos_backends.gni") |
| import("stl_backends.gni") |
| |
| # This scope is essentially an enum for pw_system_target's `cpu` selection. |
| PW_SYSTEM_CPU = { |
| CORTEX_M4F = "cortex-m4f" |
| CORTEX_M3 = "cortex-m3" |
| CORTEX_M7F = "cortex-m7f" |
| |
| # Native builds for the host CPU. |
| NATIVE = "native" |
| } |
| |
| # This scope is essentially an enum for pw_system_target's `scheduler` |
| # selection. |
| PW_SYSTEM_SCHEDULER = { |
| FREERTOS = "freertos" |
| |
| # Native uses the host OS's native scheduler and OS primitives as provided |
| # through the Standard Template Library. |
| NATIVE = "native" |
| } |
| |
| # Defines a target toolchain, automatically setting many required build |
| # arguments to simplify instantiation of a target. |
| # |
| # Args: |
| # cpu: (required) The architecture to target. |
| # Supported choices: PW_SYSTEM_CPU.CORTEX_M7F, PW_SYSTEM_CPU.CORTEX_M4F, PW_SYSTEM_CPU.CORTEX_M3, PW_SYSTEM_CPU.NATIVE |
| # scheduler: (required) The scheduler implementation and API to use for this |
| # target. |
| # Supported choices: PW_SYSTEM_SCHEDULER.FREERTOS, PW_SYSTEM_SCHEDULER.NATIVE |
| # system_toolchain: Override the default toolchain selection. |
| # use_pw_malloc: Whether or not to replace the default malloc implementation |
| # with pw_malloc. Defaults enabled for supported targets. |
| # link_deps: Additional link-time dependencies required for all executables. |
| # This is a list of source sets. |
| # build_args: Additional overrides for GN build arguments. |
| # global_configs: Configs that will be globally applied to all pw_source_set, |
| # pw_static_library, and pw_executable targets. |
| template("pw_system_target") { |
| _OPTIMIZATION_LEVELS = { |
| SIZE_OPTIMIZED = "size_optimized" |
| SPEED_OPTIMIZED = "speed_optimized" |
| DEBUG = "debug" |
| } |
| |
| # Generic defaults. |
| _default_configs = [ "$dir_pw_build:extra_strict_warnings" ] |
| if (defined(invoker.global_configs)) { |
| foreach(cfg, invoker.global_configs) { |
| _default_configs += [ get_path_info(cfg, "abspath") ] |
| } |
| } |
| |
| _link_deps = [ |
| "$dir_pw_assert:impl", |
| "$dir_pw_log:impl", |
| ] |
| if (defined(invoker.link_deps)) { |
| _link_deps += invoker.link_deps |
| } |
| _final_binary_extension = "" |
| |
| _default_build_args = { |
| pw_system_RPC_SERVER_BACKEND = "$dir_pw_system:hdlc_rpc_server" |
| pw_system_IO_BACKEND = "$dir_pw_system:sys_io_target_io" |
| |
| # TODO(amontanez): This should be set to pw_assert_log ASAP. |
| pw_assert_BACKEND = dir_pw_assert_basic |
| |
| # TODO(amontanez): This should be set to pw_log_tokenized when support |
| # is added. |
| pw_log_BACKEND = dir_pw_log_basic |
| |
| # TODO(amontanez): This should be set to a "$dir_pw_unit_test:rpc_main" |
| # when RPC is working. |
| pw_unit_test_MAIN = "$dir_pw_unit_test:logging_main" |
| } |
| |
| # Populate architecture-specific build args. |
| assert( |
| defined(invoker.cpu), |
| "Please select a `cpu` for $target_name. Options: PW_SYSTEM_CPU.CORTEX_M7, PW_SYSTEM_CPU.CORTEX_M4F, PW_SYSTEM_CPU.CORTEX_M3, PW_SYSTEM_CPU.NATIVE") |
| if (invoker.cpu == PW_SYSTEM_CPU.CORTEX_M7F) { |
| _current_cpu = "arm" |
| _default_configs += [ "$dir_pw_toolchain/arm_gcc:enable_float_printf" ] |
| _arch_build_args = { |
| pw_bloat_BLOATY_CONFIG = "$dir_pw_boot_cortex_m/bloaty_config.bloaty" |
| pw_boot_BACKEND = "$dir_pw_boot_cortex_m:armv7m" |
| pw_interrupt_CONTEXT_BACKEND = "$dir_pw_interrupt_cortex_m:context_armv7m" |
| } |
| |
| if (defined(invoker.system_toolchain)) { |
| _system_toolchain = invoker.system_toolchain |
| } else { |
| _system_toolchain = pw_toolchain_arm_gcc |
| } |
| |
| _final_binary_extension = ".elf" |
| |
| _toolchains = [ |
| { |
| toolchain_base = _system_toolchain.cortex_m7f_debug |
| level_name = _OPTIMIZATION_LEVELS.DEBUG |
| }, |
| { |
| toolchain_base = _system_toolchain.cortex_m7f_size_optimized |
| level_name = _OPTIMIZATION_LEVELS.SIZE_OPTIMIZED |
| }, |
| { |
| toolchain_base = _system_toolchain.cortex_m7f_speed_optimized |
| level_name = _OPTIMIZATION_LEVELS.SPEED_OPTIMIZED |
| }, |
| ] |
| } else if (invoker.cpu == PW_SYSTEM_CPU.CORTEX_M4F) { |
| _current_cpu = "arm" |
| _default_configs += [ "$dir_pw_toolchain/arm_gcc:enable_float_printf" ] |
| _arch_build_args = { |
| pw_bloat_BLOATY_CONFIG = "$dir_pw_boot_cortex_m/bloaty_config.bloaty" |
| pw_boot_BACKEND = "$dir_pw_boot_cortex_m:armv7m" |
| pw_interrupt_CONTEXT_BACKEND = "$dir_pw_interrupt_cortex_m:context_armv7m" |
| } |
| |
| if (defined(invoker.system_toolchain)) { |
| _system_toolchain = invoker.system_toolchain |
| } else { |
| _system_toolchain = pw_toolchain_arm_gcc |
| } |
| |
| _final_binary_extension = ".elf" |
| |
| _toolchains = [ |
| { |
| toolchain_base = _system_toolchain.cortex_m4f_debug |
| level_name = _OPTIMIZATION_LEVELS.DEBUG |
| }, |
| { |
| toolchain_base = _system_toolchain.cortex_m4f_size_optimized |
| level_name = _OPTIMIZATION_LEVELS.SIZE_OPTIMIZED |
| }, |
| { |
| toolchain_base = _system_toolchain.cortex_m4f_speed_optimized |
| level_name = _OPTIMIZATION_LEVELS.SPEED_OPTIMIZED |
| }, |
| ] |
| } else if (invoker.cpu == PW_SYSTEM_CPU.CORTEX_M3) { |
| _current_cpu = "arm" |
| _arch_build_args = { |
| pw_bloat_BLOATY_CONFIG = "$dir_pw_boot_cortex_m/bloaty_config.bloaty" |
| pw_boot_BACKEND = "$dir_pw_boot_cortex_m:armv7m" |
| pw_interrupt_CONTEXT_BACKEND = "$dir_pw_interrupt_cortex_m:context_armv7m" |
| } |
| |
| if (defined(invoker.system_toolchain)) { |
| _system_toolchain = invoker.system_toolchain |
| } else { |
| _system_toolchain = pw_toolchain_arm_gcc |
| } |
| |
| _final_binary_extension = ".elf" |
| |
| _toolchains = [ |
| { |
| toolchain_base = _system_toolchain.cortex_m3_debug |
| level_name = _OPTIMIZATION_LEVELS.DEBUG |
| }, |
| { |
| toolchain_base = _system_toolchain.cortex_m3_size_optimized |
| level_name = _OPTIMIZATION_LEVELS.SIZE_OPTIMIZED |
| }, |
| { |
| toolchain_base = _system_toolchain.cortex_m3_speed_optimized |
| level_name = _OPTIMIZATION_LEVELS.SPEED_OPTIMIZED |
| }, |
| ] |
| } else if (invoker.cpu == PW_SYSTEM_CPU.NATIVE) { |
| _current_cpu = host_cpu |
| _arch_build_args = { |
| pw_log_BACKEND = dir_pw_log_string |
| pw_log_string_HANDLER_BACKEND = "$dir_pw_system:log_backend" |
| pw_sys_io_BACKEND = "$dir_pw_sys_io_stdio" |
| pw_system_IO_BACKEND = "$dir_pw_system:socket_target_io" |
| } |
| _link_deps += [ "$dir_pw_log_string:handler.impl" ] |
| |
| if (defined(invoker.system_toolchain)) { |
| _system_toolchain = invoker.system_toolchain |
| } else if (host_os == "win") { |
| _system_toolchain = pw_toolchain_host_gcc |
| } else { |
| _system_toolchain = pw_toolchain_host_clang |
| } |
| |
| _toolchains = [ |
| { |
| toolchain_base = _system_toolchain.debug |
| level_name = _OPTIMIZATION_LEVELS.DEBUG |
| }, |
| { |
| toolchain_base = _system_toolchain.size_optimized |
| level_name = _OPTIMIZATION_LEVELS.SIZE_OPTIMIZED |
| }, |
| { |
| toolchain_base = _system_toolchain.speed_optimized |
| level_name = _OPTIMIZATION_LEVELS.SPEED_OPTIMIZED |
| }, |
| ] |
| } |
| assert(defined(_arch_build_args), |
| "Unknown cpu choice for $target_name: `${invoker.cpu}`") |
| |
| # Populate OS-specific build args. |
| assert( |
| defined(invoker.scheduler), |
| "Please select an `scheduler` for $target_name. Options: PW_SYSTEM_SCHEDULER.FREERTOS, PW_SYSTEM_SCHEDULER.NATIVE") |
| if (invoker.scheduler == PW_SYSTEM_SCHEDULER.FREERTOS) { |
| _current_os = "freertos" |
| _os_build_args = PW_SYSTEM_FREERTOS_BACKENDS |
| } else if (invoker.scheduler == PW_SYSTEM_SCHEDULER.NATIVE) { |
| _current_os = host_os |
| _os_build_args = PW_SYSTEM_STL_BACKENDS |
| } |
| assert(defined(_os_build_args), |
| "Unknown scheduler choice for $target_name: `${invoker.scheduler}`") |
| |
| # Configure malloc defaults. |
| _use_pw_malloc = false |
| if (defined(invoker.use_pw_malloc)) { |
| _use_pw_malloc = invoker.use_pw_malloc |
| } else if (invoker.cpu != PW_SYSTEM_CPU.NATIVE) { |
| _use_pw_malloc = true |
| } |
| |
| if (_use_pw_malloc) { |
| _default_configs += [ "$dir_pw_malloc:pw_malloc_wrapper_config" ] |
| _link_deps += [ dir_pw_malloc ] |
| _malloc_build_args = { |
| pw_malloc_BACKEND = dir_pw_malloc_freelist |
| } |
| } else { |
| _malloc_build_args = { |
| } |
| } |
| |
| foreach(toolchain_and_level, _toolchains) { |
| # Clear from previous iteration. |
| _base = { |
| } |
| _base = toolchain_and_level.toolchain_base |
| |
| generate_toolchain("${target_name}.${toolchain_and_level.level_name}") { |
| forward_variables_from(_base, |
| "*", |
| [ |
| "defaults", |
| "name", |
| ]) |
| final_binary_extension = _final_binary_extension |
| defaults = { |
| current_os = _current_os |
| current_cpu = _current_cpu |
| forward_variables_from(_base.defaults, "*") |
| forward_variables_from(_default_build_args, "*") |
| forward_variables_from(_arch_build_args, "*") |
| forward_variables_from(_os_build_args, "*") |
| forward_variables_from(_malloc_build_args, "*") |
| default_configs += _default_configs |
| if (!defined(pw_build_LINK_DEPS)) { |
| pw_build_LINK_DEPS = [] |
| } |
| pw_build_LINK_DEPS += _link_deps |
| |
| if (defined(invoker.build_args)) { |
| forward_variables_from(invoker.build_args, "*") |
| } |
| } |
| } |
| } |
| } |