SDL_mixer different from SDL, SDL_net ..?

Hello !

I am interested if anybody else has this problem :

SDL, SDL_net, SDL_image compile without problems.

When i run ./configure from SDL_mixer it is not able to
detect the a.out name. It breaks. I looked at the config.log
and saw that it just includes the content from the INCLUDE
and maybe LIB env. var. directly into the compiling line
without any -I or so.

INCLUDE and LIB are normally not empty on my system,
as i have Visual Studio and several SDKs installed.

A way to get it compiled was to just do export INCLUDE= and export LIB=
before calling ./configure