mirror of
https://github.com/raspberrypi/pico-sdk.git
synced 2025-12-10 07:14:36 +01:00
be549183e8
* Bazel add default compliation args for opt and debug. Can be overriden * Add docstrings for new compilation mode override flags * Remove cc_args_list shims, which arent needed anymore for cc_feature * Add Compilation mode overrides to the BAZEL_ONLY_ALLOWLIST, these dont exist in Cmake * For completness add the fastbuild default options, and override flag * Remove the default options for fastbuiild, as the bazel doc defaults didnt make much sense, nor work. Leaving these for completness and future addition * Rename the config and constraint labels from OVERRIDE to REMOVE_DEFS * Change naming of flags from PICO_COMPILATION_XXX_REMOVE_DEFS to PICO_COMPILATION_NO_XXX_ARGS for OPT, FASTBUILD & DEBUG variants * Fixup spellling mistakes, and comments * Fix typo PICO_COMPILATION_NO_FASBUILD_ARGS to FASTBUILD
333 lines
10 KiB
Text
333 lines
10 KiB
Text
load("@rules_cc//cc/toolchains:args.bzl", "cc_args")
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load("@rules_cc//cc/toolchains:args_list.bzl", "cc_args_list")
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load("@rules_cc//cc/toolchains:feature.bzl", "cc_feature")
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load("@rules_cc//cc/toolchains:toolchain.bzl", "cc_toolchain")
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load("configurable_feature.bzl", "configurable_toolchain_feature")
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package(default_visibility = ["//visibility:public"])
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cc_args(
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name = "armv6m-none-eabi",
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actions = [
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"@rules_cc//cc/toolchains/actions:compile_actions",
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"@rules_cc//cc/toolchains/actions:link_actions",
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],
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args = ["--target=armv6m-none-eabi"],
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)
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cc_args(
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name = "armv8m.main-none-eabi",
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actions = [
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"@rules_cc//cc/toolchains/actions:compile_actions",
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"@rules_cc//cc/toolchains/actions:link_actions",
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],
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args = ["--target=armv8m.main-none-eabi"],
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)
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cc_args(
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name = "cortex-m0",
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actions = [
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"@rules_cc//cc/toolchains/actions:compile_actions",
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"@rules_cc//cc/toolchains/actions:link_actions",
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],
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args = [
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"-mcpu=cortex-m0plus",
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"-mthumb",
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],
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)
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cc_args(
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name = "cortex-m33",
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actions = [
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"@rules_cc//cc/toolchains/actions:compile_actions",
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"@rules_cc//cc/toolchains/actions:link_actions",
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],
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args = [
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"-mcpu=cortex-m33",
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"-march=armv8-m.main+fp+dsp",
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"-mfloat-abi=softfp",
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"-mthumb",
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"-mcmse",
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],
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)
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# :no_canonical_system_headers and :no_canonical_prefixes both prevent built-in
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# compiler include directories from resolving to absolute paths. Prefer to use
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# :bazel_no_absolute_paths, since it correctly guides based on the current
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# compiler type.
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cc_args(
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name = "no_canonical_system_headers",
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actions = ["@rules_cc//cc/toolchains/actions:compile_actions"],
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args = ["-fno-canonical-system-headers"],
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)
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cc_args(
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name = "no_canonical_prefixes",
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actions = ["@rules_cc//cc/toolchains/actions:compile_actions"],
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args = ["-no-canonical-prefixes"],
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)
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cc_args_list(
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name = "bazel_no_absolute_paths",
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args = select({
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"//bazel/constraint:pico_toolchain_clang_enabled": [],
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"//conditions:default": [":no_canonical_system_headers"],
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}) + [":no_canonical_prefixes"],
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)
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cc_args(
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name = "llvm-libc_args",
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actions = ["@rules_cc//cc/toolchains/actions:link_actions"],
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args = [
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"--unwindlib=none",
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"-nostdlib++",
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"-nostartfiles",
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"-Wl,-lc++",
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"-Wl,-lm",
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],
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visibility = ["//visibility:private"],
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)
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cc_args(
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name = "debug_args",
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actions = [
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"@rules_cc//cc/toolchains/actions:compile_actions",
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"@rules_cc//cc/toolchains/actions:link_actions",
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],
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args = select({
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"//bazel/constraint:pico_compilation_no_debug_args_set": [],
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"//conditions:default": [
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"-Og",
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"-g3",
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],
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})
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)
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cc_args(
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name = "opt_args",
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actions = [
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"@rules_cc//cc/toolchains/actions:compile_actions",
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"@rules_cc//cc/toolchains/actions:link_actions",
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],
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args = select({
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"//bazel/constraint:pico_compilation_no_opt_args_set": [],
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"//conditions:default": [
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"-O2",
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"-DNDEBUG",
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],
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})
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)
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cc_args(
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name = "fastbuild_args",
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actions = [
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"@rules_cc//cc/toolchains/actions:compile_actions",
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"@rules_cc//cc/toolchains/actions:link_actions",
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],
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args = select({
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"//bazel/constraint:pico_compilation_no_fastbuild_args_set": [],
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# The conditions default are kept as nothing here, The bazel docs default are -gmlt -Wl,-S.
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"//conditions:default": [],
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})
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)
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configurable_toolchain_feature(
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name = "gc_sections",
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copts = [
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"-ffunction-sections",
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"-fdata-sections",
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],
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linkopts = ["-Wl,--gc-sections"],
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)
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configurable_toolchain_feature(
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name = "cxx_no_exceptions",
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cxxopts = [
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"-fno-exceptions",
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"-fno-unwind-tables",
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],
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)
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configurable_toolchain_feature(
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name = "cxx_no_rtti",
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cxxopts = ["-fno-rtti"],
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)
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configurable_toolchain_feature(
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name = "cxx_no_cxa_atexit",
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cxxopts = ["-fno-use-cxa-atexit"],
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)
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configurable_toolchain_feature(
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name = "override_max_page_size",
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linkopts = ["-Wl,-z,max-page-size=4096"],
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)
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cc_feature(
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name = "dbg",
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args = [":debug_args"],
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overrides = "@rules_cc//cc/toolchains/features:dbg",
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)
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cc_feature(
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name = "opt",
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args = [":opt_args"],
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overrides = "@rules_cc//cc/toolchains/features:opt",
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)
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cc_feature(
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name = "fastbuild",
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args = [":fastbuild_args"],
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overrides = "@rules_cc//cc/toolchains/features:fastbuild",
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)
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HOSTS = (
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("linux", "x86_64"),
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("linux", "aarch64"),
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("win", "x86_64"),
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("mac", "x86_64"),
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("mac", "aarch64"),
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)
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_HOST_OS_CONSTRAINTS = {
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"linux": "@platforms//os:linux",
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"win": "@platforms//os:windows",
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"mac": "@platforms//os:macos",
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}
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_HOST_CPU_CONSTRAINTS = {
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"x86_64": "@platforms//cpu:x86_64",
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"aarch64": "@platforms//cpu:aarch64",
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}
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[cc_toolchain(
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name = "arm_gcc_{}-{}_toolchain_cortex-m".format(host_os, host_cpu),
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tool_map = "@arm_gcc_{}-{}//:all_tools".format(host_os, host_cpu),
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args = select({
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"//bazel/constraint:rp2040": [":cortex-m0"],
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"//bazel/constraint:rp2350": [":cortex-m33"],
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"//conditions:default": [],
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}) + [
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":bazel_no_absolute_paths",
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],
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exec_compatible_with = [
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_HOST_CPU_CONSTRAINTS[host_cpu],
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_HOST_OS_CONSTRAINTS[host_os],
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],
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tags = ["manual"], # Don't try to build this in wildcard builds.
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known_features = [
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"@rules_cc//cc/toolchains/args:experimental_replace_legacy_action_config_features",
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"@pico-sdk//bazel/toolchain:dbg",
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"@pico-sdk//bazel/toolchain:opt",
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"@pico-sdk//bazel/toolchain:fastbuild",
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"@pico-sdk//bazel/toolchain:gc_sections",
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"@pico-sdk//bazel/toolchain:cxx_no_exceptions",
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"@pico-sdk//bazel/toolchain:cxx_no_rtti",
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"@pico-sdk//bazel/toolchain:cxx_no_cxa_atexit",
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"@pico-sdk//bazel/toolchain:override_max_page_size",
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],
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enabled_features = [
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"@rules_cc//cc/toolchains/args:experimental_replace_legacy_action_config_features",
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] + select({
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"//bazel/constraint:pico_no_gc_sections_enabled": [],
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"//conditions:default": [":gc_sections"],
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}) + select({
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"//bazel/constraint:pico_cxx_enable_exceptions_enabled": [],
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"//conditions:default": [":cxx_no_exceptions"],
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}) + select({
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"//bazel/constraint:pico_cxx_enable_rtti_enabled": [],
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"//conditions:default": [":cxx_no_rtti"],
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}) + select({
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"//bazel/constraint:pico_cxx_enable_cxa_atexit_enabled": [],
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"//conditions:default": [":cxx_no_cxa_atexit"],
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}) + select({
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"//bazel/constraint:pico_use_default_max_page_size_enabled": [],
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"//conditions:default": [":override_max_page_size"],
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}),
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) for host_os, host_cpu in HOSTS]
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[cc_toolchain(
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name = "clang_{}-{}_toolchain_cortex-m".format(host_os, host_cpu),
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tool_map = "@clang_{}-{}//:all_tools".format(host_os, host_cpu),
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args = select({
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"//bazel/constraint:rp2040": [
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":armv6m-none-eabi",
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":cortex-m0",
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],
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"//bazel/constraint:rp2350": [
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":armv8m.main-none-eabi",
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":cortex-m33",
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],
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"//conditions:default": [],
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}) + [
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":bazel_no_absolute_paths",
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":llvm-libc_args",
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],
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exec_compatible_with = [
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_HOST_CPU_CONSTRAINTS[host_cpu],
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_HOST_OS_CONSTRAINTS[host_os],
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],
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tags = ["manual"], # Don't try to build this in wildcard builds.
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known_features = [
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"@rules_cc//cc/toolchains/args:experimental_replace_legacy_action_config_features",
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"@pico-sdk//bazel/toolchain:dbg",
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"@pico-sdk//bazel/toolchain:opt",
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"@pico-sdk//bazel/toolchain:fastbuild",
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"@pico-sdk//bazel/toolchain:gc_sections",
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"@pico-sdk//bazel/toolchain:cxx_no_exceptions",
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"@pico-sdk//bazel/toolchain:cxx_no_rtti",
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"@pico-sdk//bazel/toolchain:cxx_no_cxa_atexit",
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"@pico-sdk//bazel/toolchain:override_max_page_size",
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],
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enabled_features = [
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"@rules_cc//cc/toolchains/args:experimental_replace_legacy_action_config_features",
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] + select({
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"//bazel/constraint:pico_no_gc_sections_enabled": [],
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"//conditions:default": [":gc_sections"],
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}) + select({
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"//bazel/constraint:pico_cxx_enable_exceptions_enabled": [],
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"//conditions:default": [":cxx_no_exceptions"],
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}) + select({
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"//bazel/constraint:pico_cxx_enable_rtti_enabled": [],
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"//conditions:default": [":cxx_no_rtti"],
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}) + select({
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"//bazel/constraint:pico_cxx_enable_cxa_atexit_enabled": [],
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"//conditions:default": [":cxx_no_cxa_atexit"],
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}) + select({
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"//bazel/constraint:pico_use_default_max_page_size_enabled": [],
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"//conditions:default": [":override_max_page_size"],
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}),
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) for host_os, host_cpu in HOSTS]
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[toolchain(
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name = "{}-{}-rp2040".format(host_os, host_cpu),
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exec_compatible_with = [
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_HOST_CPU_CONSTRAINTS[host_cpu],
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_HOST_OS_CONSTRAINTS[host_os],
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],
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target_compatible_with = [
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"@pico-sdk//bazel/constraint:rp2040",
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],
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toolchain = select({
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"//bazel/constraint:pico_toolchain_clang_enabled": "clang_{}-{}_toolchain_cortex-m".format(host_os, host_cpu),
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"//conditions:default": ":arm_gcc_{}-{}_toolchain_cortex-m".format(host_os, host_cpu),
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}),
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toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
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) for host_os, host_cpu in HOSTS]
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[toolchain(
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name = "{}-{}-rp2350".format(host_os, host_cpu),
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exec_compatible_with = [
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_HOST_CPU_CONSTRAINTS[host_cpu],
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_HOST_OS_CONSTRAINTS[host_os],
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],
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target_compatible_with = [
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"@pico-sdk//bazel/constraint:rp2350",
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],
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toolchain = select({
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"//bazel/constraint:pico_toolchain_clang_enabled": "clang_{}-{}_toolchain_cortex-m".format(host_os, host_cpu),
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"//conditions:default": ":arm_gcc_{}-{}_toolchain_cortex-m".format(host_os, host_cpu),
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}),
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toolchain_type = "@bazel_tools//tools/cpp:toolchain_type",
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) for host_os, host_cpu in HOSTS]
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