Problem by building SDL

Hi.
I downloaded the last SDL2 snapshot as .zip and tried to build it with:

sh configure --prefix=/e/libs/mingw --disable-directx
make install

But I get this error:

Error on line 248: unrecognized target ‘-include’

I’m using Win7, 64 Bit and gcc 4.6.2.
Can anyone tell me, what’s the problem is? :?