When trying to install Micro Focus Server Express 5.1, the install program shows the following error:

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details (y/n): y
bin/cobconvstrtest: error while loading shared libraries: libgcc_s.so.1: wrong ELF class: ELFCLASS64.

Resolution

Even though the products are supported on 32 bit and 64 bit platforms the installer itself will still need a 32 bit C compiler. 

Install the 32 bit C compiler and the installation will then be possible.