configure.ac contains these flags:
Gcc 3.4.4 as supplied by Cygwin 1.7 doesn't recognize the -Wno-missing-field-initializers parameter, so the configure script fails.
Code:
test "$GCC" = "yes" && CFLAGS="$CFLAGS -fno-strength-reduce -W -Wall -Wno-unused-parameter -Wno-missing-field-initializers -pedantic"