95 lines
3.7 KiB
Python
95 lines
3.7 KiB
Python
#!/usr/bin/python3
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# Shared code for glibc conformance tests.
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# Copyright (C) 2018-2022 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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#
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <https://www.gnu.org/licenses/>.
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import os.path
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import re
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import subprocess
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import tempfile
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# Compiler options for each standard.
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CFLAGS = {'ISO': '-ansi',
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'ISO99': '-std=c99',
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'ISO11': '-std=c11',
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'POSIX': '-D_POSIX_C_SOURCE=199506L -ansi',
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'XPG4': '-ansi -D_XOPEN_SOURCE',
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'XPG42': '-ansi -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED',
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'UNIX98': '-ansi -D_XOPEN_SOURCE=500',
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'XOPEN2K': '-std=c99 -D_XOPEN_SOURCE=600',
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'XOPEN2K8': '-std=c99 -D_XOPEN_SOURCE=700',
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'POSIX2008': '-std=c99 -D_POSIX_C_SOURCE=200809L'}
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# ISO C90 keywords.
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KEYWORDS_C90 = {'auto', 'break', 'case', 'char', 'const', 'continue',
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'default', 'do', 'double', 'else', 'enum', 'extern', 'float',
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'for', 'goto', 'if', 'int', 'long', 'register', 'return',
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'short', 'signed', 'sizeof', 'static', 'struct', 'switch',
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'typedef', 'union', 'unsigned', 'void', 'volatile', 'while'}
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# ISO C99 keywords.
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KEYWORDS_C99 = KEYWORDS_C90 | {'inline', 'restrict'}
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# Keywords for each standard.
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KEYWORDS = {'ISO': KEYWORDS_C90,
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'ISO99': KEYWORDS_C99,
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'ISO11': KEYWORDS_C99,
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'POSIX': KEYWORDS_C90,
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'XPG4': KEYWORDS_C90,
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'XPG42': KEYWORDS_C90,
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'UNIX98': KEYWORDS_C90,
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'XOPEN2K': KEYWORDS_C99,
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'XOPEN2K8': KEYWORDS_C99,
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'POSIX2008': KEYWORDS_C99}
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def list_exported_functions(cc, standard, header):
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"""Return the set of functions exported by a header, empty if an
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include of the header does not compile.
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"""
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cc_all = '%s -D_ISOMAC %s' % (cc, CFLAGS[standard])
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with tempfile.TemporaryDirectory() as temp_dir:
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c_file_name = os.path.join(temp_dir, 'test.c')
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aux_file_name = os.path.join(temp_dir, 'test.c.aux')
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with open(c_file_name, 'w') as c_file:
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c_file.write('#include <%s>\n' % header)
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fns = set()
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cmd = ('%s -c %s -o /dev/null -aux-info %s'
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% (cc_all, c_file_name, aux_file_name))
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try:
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subprocess.check_call(cmd, shell=True)
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except subprocess.CalledProcessError:
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return fns
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with open(aux_file_name, 'r') as aux_file:
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for line in aux_file:
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line = re.sub(r'/\*.*?\*/', '', line)
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line = line.strip()
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if line:
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# The word before a '(' that isn't '(*' is the
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# function name before the argument list (not
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# fully general, but sufficient for -aux-info
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# output on standard headers).
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m = re.search(r'([A-Za-z0-9_]+) *\([^*]', line)
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if m:
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fns.add(m.group(1))
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else:
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raise ValueError("couldn't parse -aux-info output: %s"
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% line)
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return fns
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