85 lines
3.1 KiB
Python
85 lines
3.1 KiB
Python
# Sphinx extension to integrate defines into the Sphinx Build
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#
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# Runs after the IDF dummy project has been built
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#
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# Then emits the new 'idf-defines-generated' event which has a dictionary of raw text define values
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# that other extensions can use to generate relevant data.
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import glob
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import os
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import pprint
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import subprocess
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import re
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def generate_defines(app, project_description):
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sdk_config_path = os.path.join(project_description["build_dir"], "config")
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# Parse kconfig macros to pass into doxygen
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#
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# TODO: this should use the set of "config which can't be changed" eventually,
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# not the header
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defines = get_defines(os.path.join(project_description["build_dir"],
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"config", "sdkconfig.h"), sdk_config_path)
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# Add all SOC _caps.h headers and kconfig macros to the defines
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#
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# kind of a hack, be nicer to add a component info dict in project_description.json
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soc_path = [p for p in project_description["build_component_paths"] if p.endswith("/soc")][0]
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soc_headers = glob.glob(os.path.join(soc_path, "soc", project_description["target"],
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"include", "soc", "*_caps.h"))
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assert len(soc_headers) > 0
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for soc_header in soc_headers:
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defines.update(get_defines(soc_header, sdk_config_path))
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# write a list of definitions to make debugging easier
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with open(os.path.join(app.config.build_dir, "macro-definitions.txt"), "w") as f:
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pprint.pprint(defines, f)
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print("Saved macro list to %s" % f.name)
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add_tags(app, defines)
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app.emit('idf-defines-generated', defines)
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def get_defines(header_path, sdk_config_path):
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defines = {}
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# Note: we run C preprocessor here without any -I arguments (except "sdkconfig.h"), so assumption is
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# that these headers are all self-contained and don't include any other headers
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# not in the same directory
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print("Reading macros from %s..." % (header_path))
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processed_output = subprocess.check_output(["xtensa-esp32-elf-gcc", "-I", sdk_config_path,
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"-dM", "-E", header_path]).decode()
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for line in processed_output.split("\n"):
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line = line.strip()
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m = re.search("#define ([^ ]+) ?(.*)", line)
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if m:
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name = m.group(1)
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value = m.group(2)
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if name.startswith("_"):
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continue # toolchain macro
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if (" " in value) or ("=" in value):
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value = "" # macros that expand to multiple tokens (ie function macros) cause doxygen errors, so just mark as 'defined'
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defines[name] = value
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return defines
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def add_tags(app, defines):
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# try to parse define values as ints and add to tags
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for name, value in defines.items():
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try:
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define_value = int(value.strip("()"))
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if define_value > 0:
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app.tags.add(name)
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except ValueError:
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continue
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def setup(app):
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app.connect('idf-info', generate_defines)
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app.add_event('idf-defines-generated')
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return {'parallel_read_safe': True, 'parallel_write_safe': True, 'version': '0.2'}
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