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Extend build system checks
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* Adds check that ensures the Bazel and CMake Pico SDK version strings
  stay in sync.
* Adds check that ensures the Bazel pins for external dependencies stays
  in sync with the git submodule pins.
* Updates cyw43-driver pin in Bazel.
* Makes the checks for some build configurability options non-blocking.
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@armandomontanez
armandomontanez committed Nov 13, 2024
1 parent 06b7c1c commit c52d0f4
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61 changes: 30 additions & 31 deletions .github/workflows/bazel_build.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -43,34 +43,33 @@ jobs:
# Checks that the current BCR-requested version of Picotool builds.
- name: Bazel Picotool backwards compatibility
run: bazel build @picotool//:picotool
# Add back when it begins to pass.
# other-bazel-checks:
# runs-on: ubuntu-latest
# steps:
# - name: Checkout
# uses: actions/checkout@v4
# with:
# fetch-depth: 0
# - name: Get Bazel
# uses: bazel-contrib/[email protected]
# with:
# # Avoid downloading Bazel every time.
# bazelisk-cache: true
# # Store build cache per workflow.
# disk-cache: ${{ github.workflow }}
# # Share repository cache between workflows.
# repository-cache: true
# # Only needed to drive the presbumit scripts.
# - name: Setup Python
# uses: actions/setup-python@v5
# with:
# python-version: '3.10'
# - name: Fetch latest Picotool
# uses: actions/checkout@v4
# with:
# repository: raspberrypi/picotool
# ref: develop
# fetch-depth: 0
# path: lib/picotool
# - name: Other Bazel checks
# run: python3 tools/run_all_bazel_checks.py --program=other --picotool-dir=lib/picotool
other-bazel-checks:
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v4
with:
fetch-depth: 0
- name: Get Bazel
uses: bazel-contrib/[email protected]
with:
# Avoid downloading Bazel every time.
bazelisk-cache: true
# Store build cache per workflow.
disk-cache: ${{ github.workflow }}
# Share repository cache between workflows.
repository-cache: true
# Only needed to drive the presbumit scripts.
- name: Setup Python
uses: actions/setup-python@v5
with:
python-version: '3.10'
- name: Fetch latest Picotool
uses: actions/checkout@v4
with:
repository: raspberrypi/picotool
ref: develop
fetch-depth: 0
path: lib/picotool
- name: Other Bazel checks
run: python3 tools/run_all_bazel_checks.py --program=other --picotool-dir=lib/picotool
32 changes: 15 additions & 17 deletions MODULE.bazel
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Original file line number Diff line number Diff line change
Expand Up @@ -84,40 +84,38 @@ http_archive(
url = "https://chrome-infra-packages.appspot.com/dl/fuchsia/third_party/clang/mac-arm64/+/git_revision:2b0a708f41dd6291ee744704d43febc975e3d026",
)

new_git_repository = use_repo_rule("@bazel_tools//tools/build_defs/repo:git.bzl", "new_git_repository")

# TODO: Provide tinyusb as a proper Bazel module.
http_archive(
new_git_repository(
name = "tinyusb",
build_file = "//src/rp2_common/tinyusb:tinyusb.BUILD",
sha256 = "d64728aef58b80d5ce3747cad133f520da46e2b7ea3aadfda0e981aba6b658b3",
strip_prefix = "tinyusb-4232642899362fa5e9cf0dc59bad6f1f6d32c563",
url = "https://github.com/hathach/tinyusb/archive/4232642899362fa5e9cf0dc59bad6f1f6d32c563.tar.gz",
commit = "4232642899362fa5e9cf0dc59bad6f1f6d32c563", # keep-in-sync-with-submodule: tinyusb
remote = "https://github.com/hathach/tinyusb.git",
)

# TODO: Provide btstack as a proper Bazel module.
http_archive(
new_git_repository(
name = "btstack",
build_file = "//src/rp2_common/pico_btstack:btstack.BUILD",
sha256 = "64e86d9cf82b346e743fe1d4818b9380712b17abdb3f2c3524e92464b5ef3d19",
strip_prefix = "btstack-2b49e57bd1fae85ac32ac1f41cdb7c794de335f6",
url = "https://github.com/bluekitchen/btstack/archive/2b49e57bd1fae85ac32ac1f41cdb7c794de335f6.tar.gz",
commit = "2b49e57bd1fae85ac32ac1f41cdb7c794de335f6", # keep-in-sync-with-submodule: btstack
remote = "https://github.com/bluekitchen/btstack.git",
)

# TODO: Provide btstack as a proper Bazel module.
http_archive(
# TODO: Provide cyw43-driver as a proper Bazel module.
new_git_repository(
name = "cyw43-driver",
build_file = "//src/rp2_common/pico_cyw43_driver:cyw43-driver.BUILD",
sha256 = "0fcc7707fef95dd562d5572604713266613a27caeeae2f10afeccee9592a53ce",
strip_prefix = "cyw43-driver-faf36381bad1f668a30172b6336c9a970966ef4c",
url = "https://github.com/georgerobotics/cyw43-driver/archive/faf36381bad1f668a30172b6336c9a970966ef4c.tar.gz",
commit = "cf924bb04c8984675ca0fc2178f082e404e048c3", # keep-in-sync-with-submodule: cyw43-driver
remote = "https://github.com/georgerobotics/cyw43-driver.git",
)

# TODO: Provide lwip as a proper Bazel module.
http_archive(
new_git_repository(
name = "lwip",
build_file = "//src/rp2_common/pico_lwip:lwip.BUILD",
sha256 = "72856d557f72911cf6826ef745c23c54822df83a474557823241164a1d1361aa",
strip_prefix = "lwip-0a0452b2c39bdd91e252aef045c115f88f6ca773",
url = "https://github.com/lwip-tcpip/lwip/archive/0a0452b2c39bdd91e252aef045c115f88f6ca773.tar.gz",
commit = "0a0452b2c39bdd91e252aef045c115f88f6ca773", # keep-in-sync-with-submodule: lwip
remote = "https://github.com/lwip-tcpip/lwip.git",
)

register_toolchains(
Expand Down
134 changes: 111 additions & 23 deletions tools/compare_build_systems.py
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,9 @@
import glob
import logging
import os
from pathlib import Path
import re
import subprocess
import sys
from typing import Dict

Expand All @@ -37,6 +39,12 @@

ATTR_REGEX = re.compile(r",?\s*(?P<key>[^=]+)=(?P<value>[^,]+)")

BAZEL_MODULE_REGEX = re.compile(r'\s*commit\s*=\s*\"(?P<commit>[0-9a-fA-F]+)\"\s*,\s*#\s*keep-in-sync-with-submodule:\s*(?P<dependency>\S*)')

BAZEL_VERSION_REGEX = re.compile(r'module\(\s*name\s*=\s*"pico-sdk",\s*version\s*=\s*"(?P<sdk_version>[^"]+)",?\s*\)')

CMAKE_VERSION_REGEX = re.compile(r'^[^#]*set\(PICO_SDK_VERSION_(?P<part>\S+)\s+(?P<value>\S+)\)')

# Sometimes the build systems are supposed to be implemented differently. This
# allowlist permits the descriptions to differ between CMake and Bazel.
BUILD_SYSTEM_DESCRIPTION_DIFFERENCE_ALLOWLIST = (
Expand All @@ -60,7 +68,7 @@
"PICO_TOOLCHAIN_PATH",
# Bazel uses native --platforms mechanics.
"PICO_PLATFORM",
# TODO: No built-in, pre-configured clang offering for Bazel yet.
# Named PICO_TOOLCHAIN in Bazel.
"PICO_COMPILER",
# Entirely irrelevant to Bazel, use Bazel platforms:
# https://bazel.build/extending/platforms
Expand All @@ -87,14 +95,17 @@
"PICO_DEFAULT_PIOASM_OUTPUT_FORMAT",
# Bazel always has picotool.
"PICO_NO_PICOTOOL",
# TODO: Eventualy support.
"PICO_NO_COPRO_DIS",
"PICO_DEFAULT_RP2350_PLATFORM",
"PICO_GCC_TRIPLE",
"PICO_NO_FLASH",
"PICO_COPY_TO_RAM",
"PICO_RP2350_ARM_S_CONFIG_HEADER_FILES",
"PICO_RP2350_RISCV_CONFIG_HEADER_FILES",
# These aren't supported as build flags in Bazel. Prefer to
# set these in board header files like other SDK defines.
"CYW43_DEFAULT_PIN_WL_REG_ON",
"CYW43_DEFAULT_PIN_WL_DATA_OUT",
"CYW43_DEFAULT_PIN_WL_DATA_IN",
"CYW43_DEFAULT_PIN_WL_HOST_WAKE",
"CYW43_DEFAULT_PIN_WL_CLOCK",
"CYW43_DEFAULT_PIN_WL_CS",
"CYW43_PIO_CLOCK_DIV_INT",
"CYW43_PIO_CLOCK_DIV_FRAC",
"CYW43_PIO_CLOCK_DIV_DYNAMIC",
)

BAZEL_ONLY_ALLOWLIST = (
Expand Down Expand Up @@ -181,17 +192,17 @@ def FindKnownOptions(option_pattern_matcher, file_paths):
return options


def OptionsAreEqual(bazel_option, cmake_option):
def OptionsAreEqual(bazel_option, cmake_option, warnings_as_errors):
if bazel_option is None:
if cmake_option.name in CMAKE_ONLY_ALLOWLIST:
return True
_LOG.warning(f" {cmake_option.name} does not exist in Bazel")
return False
return not warnings_as_errors
elif cmake_option is None:
if bazel_option.name in BAZEL_ONLY_ALLOWLIST:
return True
_LOG.warning(f" {bazel_option.name} does not exist in CMake")
return False
return not warnings_as_errors
elif not bazel_option.matches(cmake_option):
_LOG.error(" Bazel and CMAKE definitions do not match:")
_LOG.error(f" [CMAKE] {bazel_option}")
Expand All @@ -201,7 +212,7 @@ def OptionsAreEqual(bazel_option, cmake_option):
return True


def CompareOptions(bazel_pattern, bazel_files, cmake_pattern, cmake_files):
def CompareOptions(bazel_pattern, bazel_files, cmake_pattern, cmake_files, warnings_as_errors=True):
bazel_options = FindKnownOptions(bazel_pattern, bazel_files)
cmake_options = FindKnownOptions(cmake_pattern, cmake_files)

Expand All @@ -210,10 +221,72 @@ def CompareOptions(bazel_pattern, bazel_files, cmake_pattern, cmake_files):
both.update(bazel_options)
both.update(cmake_options)
for k in both.keys():
if not OptionsAreEqual(bazel_options.get(k, None), cmake_options.get(k, None)):
if not OptionsAreEqual(
bazel_options.get(k, None),
cmake_options.get(k, None),
warnings_as_errors,
):
are_equal = False
return are_equal

def CompareExternalDependencyVersions():
pattern = re.compile(BAZEL_MODULE_REGEX)
all_okay = True
with open(Path(SDK_ROOT) / "MODULE.bazel", "r") as bazel_module_file:
for line in bazel_module_file:
maybe_match = pattern.match(line)
if not maybe_match:
continue

current_submodule_pin = subprocess.run(
("git", "-C", SDK_ROOT, "rev-parse", f'HEAD:lib/{maybe_match.group("dependency")}'),
text=True,
check=True,
capture_output=True,
).stdout.strip()
if current_submodule_pin != maybe_match.group("commit"):
_LOG.error(" External pins for %s do not match:", maybe_match.group("dependency"))
_LOG.error(" [CMAKE] %s", current_submodule_pin)
_LOG.error(" [BAZEL] %s", maybe_match.group("commit"))
all_okay = False
else:
_LOG.info(" External pins for %s match!", maybe_match.group("dependency"))

return all_okay

def CompareSdkVersion():
# Find version string specified in Bazel.
bazel_module_file_path = Path(SDK_ROOT) / "MODULE.bazel"
bazel_module_file_contents = bazel_module_file_path.read_text()
bazel_sdk_version = BAZEL_VERSION_REGEX.search(bazel_module_file_contents)
if not bazel_sdk_version:
_LOG.error(" Failed to find Bazel Pico SDK version string")
return False
bazel_version_string = bazel_sdk_version.group("sdk_version")

# Find version string specified in CMake.
cmake_version_parts = {}
with open(Path(SDK_ROOT) / "pico_sdk_version.cmake", "r") as cmake_version_file:
for line in cmake_version_file:
match = CMAKE_VERSION_REGEX.match(line)
if match:
cmake_version_parts[match.group("part")] = match.group("value")
if len(cmake_version_parts) < 3:
_LOG.error(" Failed to find CMake Pico SDK version string")
return False
cmake_version_string = ".".join((
cmake_version_parts["MAJOR"],
cmake_version_parts["MINOR"],
cmake_version_parts["REVISION"],
))
if "PRE_RELEASE_ID" in cmake_version_parts:
cmake_version_string += "-" + cmake_version_parts["PRE_RELEASE_ID"]

if cmake_version_string != bazel_version_string:
_LOG.error(" Declared CMake SDK version is %s and Bazel is %s", cmake_version_string, bazel_version_string)
return False

return True

def compare_build_systems():
cmake_files = [
Expand All @@ -227,20 +300,35 @@ def compare_build_systems():
for f in glob.glob(os.path.join(SDK_ROOT, p), recursive=True)
]

_LOG.info("[1/2] Checking build system configuration flags...")
build_options_ok = CompareOptions(
"PICO_BAZEL_CONFIG", bazel_files, "PICO_CMAKE_CONFIG", cmake_files
)
results = []
_LOG.info("[1/3] Checking build system configuration flags...")
results.append(CompareOptions(
"PICO_BAZEL_CONFIG",
bazel_files,
"PICO_CMAKE_CONFIG",
cmake_files,
# For now, allow CMake and Bazel to go out of sync when it comes to
# build configurability since it's a big ask to make contributors
# implement the same functionality in both builds.
warnings_as_errors=False,
))

_LOG.info("[2/2] Checking build system defines...")
build_defines_ok = CompareOptions(
_LOG.info("[2/4] Checking build system defines...")
results.append(CompareOptions(
"PICO_BUILD_DEFINE", bazel_files, "PICO_BUILD_DEFINE", cmake_files
)
))

_LOG.info("[3/4] Checking submodule pins...")
results.append(CompareExternalDependencyVersions())

_LOG.info("[4/4] Checking version strings...")
results.append(CompareSdkVersion())

if build_options_ok and build_defines_ok:
_LOG.info("OK")
if False not in results:
_LOG.info("Passed with no blocking failures")
return 0

_LOG.error("One or more blocking failures detected")
return 1


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