On 11/5/24 14:27, H. Peter Anvin wrote:
I don't know if it is necessary, but you can do something like this to make absolutely sure you don't end up with non-relative symbol references:static inline __constfunc void * sym_addr(const void *sym) { void *addr; asm("lea %c1(%%rip),%0" : "=r" (addr) : "i" (sym)); return addr; }
Compiling with "-fpic -fvisibility=hidden -mcmodel=medium" can also be used to suppress non-relative references. If you have external symbol references they at least *should* be emitted as GOTPCRELX relocations which the linker should relax to relative references; however, I would think that you really don't want any of those :)
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