Report Older LabVIEW installation disks in Wiki Help Posted November 23 Thanks @Rolf Kalbermatter. You're right about the `.lib` files - just looked at one and it's just a collection of stubs. It's not for dynamic symbol loading, instead it calls `CallLVRT`, giving it a static struct as first parameter - this first parameter contains the symbol name to actually call. There's more than a thousand of symbols in that `.lib` and all of them do that. For compiling the LV 2.5 ASM - it would require some minor changes, but not the arch conversion - toolchains today still have `-m32` or `-arch i386` or other parameters to switch to 32-bit, and PC OSes, at least for now, offer 32-bit user space. (I'm actually curious about compiling 64-bit app with 32-bit sub-module inside.. seen people experimenting with code segment selector to get to 32-bit mode. Requires mmapping any memory to be accessible in 32-bit space. Not sure if it works outside Linux though.) Still, it's just ASM - with todays disassembly tools (and some minimal manual work) I can get compilable ASM for any version of LV, the only difference would be lack of comments and lack of names for static symbols.