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Path: /opt/alt/python27/lib64/python2.7/site-packages/numpy/distutils/command/

Viewing File: autodist.py

"""This module implements additional tests ala autoconf which can be useful.

"""
from __future__ import division, absolute_import, print_function


# We put them here since they could be easily reused outside numpy.distutils

def check_inline(cmd):
    """Return the inline identifier (may be empty)."""
    cmd._check_compiler()
    body = """
#ifndef __cplusplus
static %(inline)s int static_func (void)
{
    return 0;
}
%(inline)s int nostatic_func (void)
{
    return 0;
}
#endif"""

    for kw in ['inline', '__inline__', '__inline']:
        st = cmd.try_compile(body % {'inline': kw}, None, None)
        if st:
            return kw

    return ''

def check_restrict(cmd):
    """Return the restrict identifier (may be empty)."""
    cmd._check_compiler()
    body = """
static int static_func (char * %(restrict)s a)
{
    return 0;
}
"""

    for kw in ['restrict', '__restrict__', '__restrict']:
        st = cmd.try_compile(body % {'restrict': kw}, None, None)
        if st:
            return kw

    return ''

def check_compiler_gcc4(cmd):
    """Return True if the C compiler is GCC 4.x."""
    cmd._check_compiler()
    body = """
int
main()
{
#if (! defined __GNUC__) || (__GNUC__ < 4)
#error gcc >= 4 required
#endif
    return 0;
}
"""
    return cmd.try_compile(body, None, None)


def check_gcc_function_attribute(cmd, attribute, name):
    """Return True if the given function attribute is supported."""
    cmd._check_compiler()
    body = """
#pragma GCC diagnostic error "-Wattributes"
#pragma clang diagnostic error "-Wattributes"

int %s %s(void*);

int
main()
{
    return 0;
}
""" % (attribute, name)
    return cmd.try_compile(body, None, None) != 0

def check_gcc_variable_attribute(cmd, attribute):
    """Return True if the given variable attribute is supported."""
    cmd._check_compiler()
    body = """
#pragma GCC diagnostic error "-Wattributes"
#pragma clang diagnostic error "-Wattributes"

int %s foo;

int
main()
{
    return 0;
}
""" % (attribute, )
    return cmd.try_compile(body, None, None) != 0