1. prereqs

yum -y install cmake gcc-c++ make rpm-build svn ncurses-devel

2. get sources

svn checkout https://svn.code.sf.net/p/oorexx/code-0/main/trunk /opt/oorexx-code/

3. build

mkdir -p /opt/oorexx-build
cd /opt/oorexx-build/
cmake -DBUILD_RPM=1 -DOS_DIST=fedora30 /opt/oorexx-code/
make
cpack ./