2189c08e4e
Add a very simple check that verifies that new error numbers are added according to the errno.h file in newlib, in order to maintain compatibility with it. Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
57 lines
1.5 KiB
Python
Executable file
57 lines
1.5 KiB
Python
Executable file
#!/usr/bin/env python3
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#
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# Copyright (c) 2021 Nordic Semiconductor NA
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#
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# SPDX-License-Identifier: Apache-2.0
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"""Check minimal libc error numbers against newlib.
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This script loads the errno.h included in Zephyr's minimal libc and checks its
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contents against the SDK's newlib errno.h. This is done to ensure that both C
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libraries are aligned at all times.
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"""
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import os
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from pathlib import Path
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import re
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import sys
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def parse_errno(path):
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with open(path, 'r') as f:
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r = re.compile(r'^\s*#define\s+([A-Z]+)\s+([0-9]+)')
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errnos = []
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for line in f:
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m = r.match(line)
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if m:
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errnos.append(m.groups())
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return errnos
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def main():
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minimal = Path("lib/libc/minimal/include/errno.h")
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newlib = Path("arm-zephyr-eabi/arm-zephyr-eabi/include/sys/errno.h")
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try:
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minimal = os.environ['ZEPHYR_BASE'] / minimal
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newlib = os.environ['ZEPHYR_SDK_INSTALL_DIR'] / newlib
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except KeyError as e:
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print(f'Environment variable missing: {e}', file=sys.stderr)
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sys.exit(1)
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minimal = parse_errno(minimal)
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newlib = parse_errno(newlib)
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for e in minimal:
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if e[0] not in [x[0] for x in newlib] or e[1] != next(
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filter(lambda _e: _e[0] == e[0], newlib))[1]:
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print('Invalid entry in errno.h:', file=sys.stderr)
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print(f'{e[0]} (with value {e[1]})', file=sys.stderr)
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sys.exit(1)
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print('errno.h validated correctly')
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if __name__ == "__main__":
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main()
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