Ikmaus

Thank you for your help. Building OWLNext 6.30 with default output directories works on my computer! Regards

Unfortunately no luck so far. Building Ver. 630 with Borland 5.02 (make.exe from BC 5.5) rem Build owl-630-b2-tc5i.lib and owl-630-b2-tc5.dll C:\BC502\bin\make.exe -f bc.mak -l+ OWLVER=630 COMPVER=2 WIN32=1 BCROOT=C:\BC502 TARGETDIR=C:\owl630\bin\bc502\bin TARGETLIBDIR=C:\owl630\bin\bc502\lib LIBDIR=C:\owl630\bin\bc502\lib NO_OWL2_COMPAT=1 MT=1 DLL=1 NO_WIN32S_SUPPORT=1 NO_OWL_NATIVECTRL_ALWAYS=1 SETUP=1 leads to at linking step to some unresolved externals :-(

Thank you for your answer with lots of useful information and tips dear Vidar! I will try to do the next steps with it. Hopefully in the end we were able to migrate our software, which has been developed over many years, for further development with a modern IDE! Regards