Multi-Lib Question

[Christopher Stone]

Hi this may be a little off-topic or a stupid question, but I recently
tried to build a 32-bit application on Fedora's x86_64 arch.  I
thought that all I needed to do was add -m32 to the CFLAGS and LDFLAGS
to the makefile, but as it turns out the linking was problematic.  It
turns out I did not have the 32-bit .so file needed for linking, so I
attempted to install it with "yum install expat-devel.i386" but yum
was unable to find the package.  Basically I needed to hard code a
softlink in order to get the application to link.

So the bottom line I guess is, how do I install a 32bit devel package
on a Fedora x86_64 system?  And if 32bit libraries are provided as
default for this system, why aren't their 32bit devel counterparts
also provided?