Rieu Nicolas wrote:

I said simple2, not simple1. I don't know if that's significant, but simple2 is a lot closer to your problem code than simple1 is.

If I understand correctly, all that has changed here is that you're building simple1 in a different build environment? If so, and it now breaks, you just have to hunt down the differences between the way the two get built. It could be a difference in linkage, compiler flags, stray libraries, etc., etc.

Also, I wasn't clear in my previous message about the test I wanted you to make. I want you to change simple2 _in place_ and just say 'make' to let the MySQL++ build system build the new version. If this works, then it confirms the theory that you have a problem of build options.