Tool to convert C99 code to MSVC-compatible C89
c99-to-c89 is based on LibClang, any clang version from 3.1 is known to work.
c99conv converts preprocessed C sources, the provided c99wrap uses the C preprocessor, converts its output and feeds it to the C compiler.
c99wrap $CC $CFLAGS source
Head over to the releases page for the latest binaries. Alternatively, VideoLAN provides a mirror here.