even on hosts where a narrower type would do. With this option, on a
typical 32-bit host, Emacs integers have 62 bits instead of 30.
+Use --with-cairo to compile Emacs with Cairo drawing.
+
Use --enable-gcc-warnings to enable compile-time checks that warn
about possibly-questionable C code. This is intended for developers
and is useful with GNU-compatible compilers. On a recent GNU system