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149 lines
3.8 KiB
149 lines
3.8 KiB
"""This module implements additional tests ala autoconf which can be useful.
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"""
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import textwrap
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# We put them here since they could be easily reused outside numpy.distutils
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def check_inline(cmd):
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"""Return the inline identifier (may be empty)."""
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cmd._check_compiler()
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body = textwrap.dedent("""
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#ifndef __cplusplus
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static %(inline)s int static_func (void)
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{
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return 0;
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}
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%(inline)s int nostatic_func (void)
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{
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return 0;
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}
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#endif""")
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for kw in ['inline', '__inline__', '__inline']:
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st = cmd.try_compile(body % {'inline': kw}, None, None)
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if st:
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return kw
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return ''
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def check_restrict(cmd):
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"""Return the restrict identifier (may be empty)."""
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cmd._check_compiler()
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body = textwrap.dedent("""
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static int static_func (char * %(restrict)s a)
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{
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return 0;
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}
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""")
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for kw in ['restrict', '__restrict__', '__restrict']:
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st = cmd.try_compile(body % {'restrict': kw}, None, None)
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if st:
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return kw
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return ''
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def check_compiler_gcc(cmd):
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"""Check if the compiler is GCC."""
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cmd._check_compiler()
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body = textwrap.dedent("""
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int
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main()
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{
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#if (! defined __GNUC__)
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#error gcc required
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#endif
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return 0;
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}
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""")
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return cmd.try_compile(body, None, None)
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def check_gcc_version_at_least(cmd, major, minor=0, patchlevel=0):
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"""
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Check that the gcc version is at least the specified version."""
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cmd._check_compiler()
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version = '.'.join([str(major), str(minor), str(patchlevel)])
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body = textwrap.dedent("""
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int
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main()
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{
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#if (! defined __GNUC__) || (__GNUC__ < %(major)d) || \\
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(__GNUC_MINOR__ < %(minor)d) || \\
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(__GNUC_PATCHLEVEL__ < %(patchlevel)d)
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#error gcc >= %(version)s required
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#endif
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return 0;
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}
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""")
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kw = {'version': version, 'major': major, 'minor': minor,
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'patchlevel': patchlevel}
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return cmd.try_compile(body % kw, None, None)
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def check_gcc_function_attribute(cmd, attribute, name):
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"""Return True if the given function attribute is supported."""
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cmd._check_compiler()
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body = textwrap.dedent("""
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#pragma GCC diagnostic error "-Wattributes"
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#pragma clang diagnostic error "-Wattributes"
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int %s %s(void* unused)
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{
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return 0;
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}
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int
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main()
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{
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return 0;
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}
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""") % (attribute, name)
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return cmd.try_compile(body, None, None) != 0
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def check_gcc_function_attribute_with_intrinsics(cmd, attribute, name, code,
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include):
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"""Return True if the given function attribute is supported with
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intrinsics."""
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cmd._check_compiler()
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body = textwrap.dedent("""
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#include<%s>
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int %s %s(void)
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{
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%s;
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return 0;
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}
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int
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main()
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{
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return 0;
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}
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""") % (include, attribute, name, code)
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return cmd.try_compile(body, None, None) != 0
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def check_gcc_variable_attribute(cmd, attribute):
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"""Return True if the given variable attribute is supported."""
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cmd._check_compiler()
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body = textwrap.dedent("""
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#pragma GCC diagnostic error "-Wattributes"
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#pragma clang diagnostic error "-Wattributes"
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int %s foo;
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int
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main()
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{
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return 0;
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}
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""") % (attribute, )
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return cmd.try_compile(body, None, None) != 0
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