On Tue, Jul 10, 2018 at 12:24 PM, Ignitus Boyone <ignitusboyone@xxxxxxxxx> wrote: > I'm working on a problem where I have a code sample from biogears > https://github.com/BioGearsEngine/core > > Where my XSD CodeSynthesis generated code fails the one definition rule > when compiled against an gcc5.4 armhf compiler. ... We just cleared a similar problem with GCC 5.4. We experienced "multiply defined symbols" on i686 for some code using inline assembly and a label. We only witnessed it on 32-bit machines (and not 64-bit) machines. It appears it was due to an interaction between some inline ASM in an unnamed namespace. I tried to change the label name to 'SHA512Round%=' for a unique label and then the symbol went missing. The program failed link. Also see https://github.com/weidai11/cryptopp/commit/28e20d6e5f92 . Jeff