self.set_executables(compiler='gcc -mno-cygwin -O -Wall',
                             compiler_so='gcc -mno-cygwin -mdll -O -Wall',
                             compiler_cxx='g++ -mno-cygwin -O -Wall',
                             linker_exe='gcc -mno-cygwin',
                             linker_so='%s -mno-cygwin %s %s'
                                        % (self.linker_dll, shared_option,
                                           entry_point))

class Mingw32CCompiler(CygwinCCompiler):
    """ Handles the Mingw32 port of the GNU C compiler to Windows.
    """
    compiler_type = 'mingw32'

    def __init__(self, verbose=0, dry_run=0, force=0):

Here are some various periodic N = 4 solutions:

Solution 145
 0  6  1 10
15  9 14  5
 2  4  3  8
13 11 12  7
Solution 146
 0  6  1 10
13 11 12  7
 2  4  3  8
15  9 14  5
Solution 147
 0  6  1 12
15  9 14  3
 4  2  5  8
11 13 10  7
Solution 148
 0  6  1 12
11 13 10  7
 4  2  5  8
15  9 14  3
Solution 149
 0  6  1 14
13 11 12  3
 4  2  5 10
 9 15  8  7
Solution 150
 0  6  1 14
11 13 10  5
 2  4  3 12
 9 15  8  7
Solution 151
 0  6  1 14
 9 15  8  7
 2  4  3 12
11 13 10  5
Solution 152
 0  6  1 14

* x x *
y x x y
y z z y
* z z *