(In reply to Martin Li��ka from comment #15) > Having the configure patch, would you like to enable LTO for the package? I had tried it and it builds ... but does it work in real life? In my experiences no one can trust a compiler which (re)moves logic from code. In fact in past I had used memory barriers in the body of for loops where the code was only in the boolean and incremental statement to avoid that those loops become removed.