OVMS3-idf/tools/find_build_apps/cmake.py

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import os
import sys
import subprocess
import logging
import shutil
import re
from .common import BuildSystem, BuildItem, BuildError
BUILD_SYSTEM_CMAKE = "cmake"
IDF_PY = "idf.py"
# While ESP-IDF component CMakeLists files can be identified by the presence of 'idf_component_register' string,
# there is no equivalent for the project CMakeLists files. This seems to be the best option...
CMAKE_PROJECT_LINE = r"include($ENV{IDF_PATH}/tools/cmake/project.cmake)"
SUPPORTED_TARGETS_REGEX = re.compile(r"set\(\s*SUPPORTED_TARGETS\s+([a-z_0-9\- ]+)\s*\)")
class CMakeBuildSystem(BuildSystem):
NAME = BUILD_SYSTEM_CMAKE
@staticmethod
def build(build_item): # type: (BuildItem) -> None
app_path = build_item.app_dir
work_path = build_item.work_dir or app_path
if not build_item.build_dir:
build_path = os.path.join(work_path, "build")
elif os.path.isabs(build_item.build_dir):
build_path = build_item.build_dir
else:
build_path = os.path.join(work_path, build_item.build_dir)
if work_path != app_path:
if os.path.exists(work_path):
logging.debug("Work directory {} exists, removing".format(work_path))
if not build_item.dry_run:
shutil.rmtree(work_path)
logging.debug("Copying app from {} to {}".format(app_path, work_path))
if not build_item.dry_run:
shutil.copytree(app_path, work_path)
if os.path.exists(build_path):
logging.debug("Build directory {} exists, removing".format(build_path))
if not build_item.dry_run:
shutil.rmtree(build_path)
if not build_item.dry_run:
os.makedirs(build_path)
# Prepare the sdkconfig file, from the contents of sdkconfig.defaults (if exists) and the contents of
# build_info.sdkconfig_path, i.e. the config-specific sdkconfig file.
#
# Note: the build system supports taking multiple sdkconfig.defaults files via SDKCONFIG_DEFAULTS
# CMake variable. However here we do this manually to perform environment variable expansion in the
# sdkconfig files.
sdkconfig_defaults_list = ["sdkconfig.defaults", "sdkconfig.defaults." + build_item.target]
if build_item.sdkconfig_path:
sdkconfig_defaults_list.append(build_item.sdkconfig_path)
sdkconfig_file = os.path.join(work_path, "sdkconfig")
if os.path.exists(sdkconfig_file):
logging.debug("Removing sdkconfig file: {}".format(sdkconfig_file))
if not build_item.dry_run:
os.unlink(sdkconfig_file)
logging.debug("Creating sdkconfig file: {}".format(sdkconfig_file))
if not build_item.dry_run:
with open(sdkconfig_file, "w") as f_out:
for sdkconfig_name in sdkconfig_defaults_list:
sdkconfig_path = os.path.join(work_path, sdkconfig_name)
if not sdkconfig_path or not os.path.exists(sdkconfig_path):
continue
logging.debug("Appending {} to sdkconfig".format(sdkconfig_name))
with open(sdkconfig_path, "r") as f_in:
for line in f_in:
f_out.write(os.path.expandvars(line))
# Also save the sdkconfig file in the build directory
shutil.copyfile(
os.path.join(work_path, "sdkconfig"),
os.path.join(build_path, "sdkconfig"),
)
else:
for sdkconfig_name in sdkconfig_defaults_list:
sdkconfig_path = os.path.join(app_path, sdkconfig_name)
if not sdkconfig_path:
continue
logging.debug("Considering sdkconfig {}".format(sdkconfig_path))
if not os.path.exists(sdkconfig_path):
continue
logging.debug("Appending {} to sdkconfig".format(sdkconfig_name))
# Prepare the build arguments
args = [
# Assume it is the responsibility of the caller to
# set up the environment (run . ./export.sh)
IDF_PY,
"-B",
build_path,
"-C",
work_path,
"-DIDF_TARGET=" + build_item.target,
]
if build_item.verbose:
args.append("-v")
args.append("build")
cmdline = format(" ".join(args))
logging.info("Running {}".format(cmdline))
if build_item.dry_run:
return
log_file = None
build_stdout = sys.stdout
build_stderr = sys.stderr
if build_item.build_log_path:
logging.info("Writing build log to {}".format(build_item.build_log_path))
log_file = open(build_item.build_log_path, "w")
build_stdout = log_file
build_stderr = log_file
try:
subprocess.check_call(args, stdout=build_stdout, stderr=build_stderr)
except subprocess.CalledProcessError as e:
raise BuildError("Build failed with exit code {}".format(e.returncode))
finally:
if log_file:
log_file.close()
@staticmethod
def _read_cmakelists(app_path):
cmakelists_path = os.path.join(app_path, "CMakeLists.txt")
if not os.path.exists(cmakelists_path):
return None
with open(cmakelists_path, "r") as cmakelists_file:
return cmakelists_file.read()
@staticmethod
def is_app(path):
cmakelists_file_content = CMakeBuildSystem._read_cmakelists(path)
if not cmakelists_file_content:
return False
if CMAKE_PROJECT_LINE not in cmakelists_file_content:
return False
return True
@staticmethod
def supported_targets(app_path):
cmakelists_file_content = CMakeBuildSystem._read_cmakelists(app_path)
if not cmakelists_file_content:
return None
match = re.findall(SUPPORTED_TARGETS_REGEX, cmakelists_file_content)
if not match:
return None
if len(match) > 1:
raise NotImplementedError("Can't determine the value of SUPPORTED_TARGETS in {}".format(app_path))
targets = match[0].split(" ")
return targets