Those of us running on x86_64, ppc64, sparc64 or s390x will discover that this package does all the right things to build binaries of the correct architecture on multilib (i.e. just pass CC="gcc -m32" and CXX="g++ -m32" to configure), including detecting the required ldemlation.
Unfortunately, it rather spoils this by insisting on using lib64.
BLFS already has a sed, the following additional sed (do it before autoreconf) will put the libraries in lib - definitely needed for a 32-bit build, probably also needed for a pure64 build.
sed -i -e "s/@MARK64@//" Makefile.am &&