Got it. As I said I'm certainly not a developer but you've given me a lot of great info here. I do a good bit of compiling from source on Slackware for packages

Got it. As I said I'm certainly not a developer but you've given me a lot of great info here. I do a good bit of compiling from source on Slackware for packages not available in the official or third party repos, and I've rarely had build issues similar to this one. Now I know one more thing to look for. Thanks again!