Thank You for all your help ... I finally just did a git clone of tdenetwork then did a git checkout of the r14.0.1 commit - 1da54d8c259178905007ddd1979d53a9e5901cb2 - the package successfully compiled and installed :-) ... So thank you for your help! P.S. : It may be advisable to change the R14.0.1 - Current download package of tdenetwork to reflect the tdenetwork-r14.0.1 source code, because until I checked the CMakeLists.txt file I simply assumed that the download package tdenetwork-r14.0.1 was the source code for tdenetwork-r14.0.1.