Bug #448537 should be reopened. The needed symlink for libSDL.so is missing. Attached is a patch that adds the needed symlink to the ia32-libs package and should resolve your issue with the configure script.
--- ia32-libs-20090808/debian/rules.orig 2009-08-28 10:01:56.000000000 -0400 +++ ia32-libs-20090808/debian/rules 2009-08-27 19:28:57.000000000 -0400 @@ -194,6 +194,7 @@ ln -s libxml2.so.2 libxml2.so && \ ln -s libxslt.so.1 libxslt.so && \ ln -s libSDL-1.2.so.0 libSDL-1.2.so && \ + ln -s libSDL-1.2.so.0 libSDL.so && \ ln -s libpng12.so.0 libpng12.so && \ ln -s libpng12.so.0 libpng.so && \ ln -s libcups.so.2 libcups.so && \
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