
Superenv normally filters out "-m32" flag, preventing 32bit builds. Some software, however, still only work in 32bit mode. If ENV.m32 is called, superenv does not filter out the "-m32" flag. Also note, superenv, does not explicitly add the -m32 flag and expects the build system of the software to know when and where to provide this flag. Closes Homebrew/homebrew#16350. Signed-off-by: Adam Vandenberg <flangy@gmail.com>