Chris@87: """This module implements additional tests ala autoconf which can be useful.
Chris@87: 
Chris@87: """
Chris@87: from __future__ import division, absolute_import, print_function
Chris@87: 
Chris@87: 
Chris@87: # We put them here since they could be easily reused outside numpy.distutils
Chris@87: 
Chris@87: def check_inline(cmd):
Chris@87:     """Return the inline identifier (may be empty)."""
Chris@87:     cmd._check_compiler()
Chris@87:     body = """
Chris@87: #ifndef __cplusplus
Chris@87: static %(inline)s int static_func (void)
Chris@87: {
Chris@87:     return 0;
Chris@87: }
Chris@87: %(inline)s int nostatic_func (void)
Chris@87: {
Chris@87:     return 0;
Chris@87: }
Chris@87: #endif"""
Chris@87: 
Chris@87:     for kw in ['inline', '__inline__', '__inline']:
Chris@87:         st = cmd.try_compile(body % {'inline': kw}, None, None)
Chris@87:         if st:
Chris@87:             return kw
Chris@87: 
Chris@87:     return ''
Chris@87: 
Chris@87: def check_compiler_gcc4(cmd):
Chris@87:     """Return True if the C compiler is GCC 4.x."""
Chris@87:     cmd._check_compiler()
Chris@87:     body = """
Chris@87: int
Chris@87: main()
Chris@87: {
Chris@87: #if (! defined __GNUC__) || (__GNUC__ < 4)
Chris@87: #error gcc >= 4 required
Chris@87: #endif
Chris@87: }
Chris@87: """
Chris@87:     return cmd.try_compile(body, None, None)