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* I run "rpmdev-bumpspec -c "Changed spec file to create ilp32-capable gcc in a separate tree."" command to add the changes with comments to the spec file.
* I run "rpmbuild -ba --nocheck gcc.spec" command to get the rpms.
I run "rpm -qlp gcc-4.9.2-6.bb1.1.aarch64.rpm gcc.spec" command to check that all gcc files will be installed in the correct place (under /opt/ilp32/).