20 ms·

Try lld, it's even faster than gold. Also note that not so long ago, ccache didn't support split dwarf. If you're using ccache, check that your version support

Try lld, it's even faster than gold. Also note that not so long ago, ccache didn't support split dwarf. If you're using ccache, check that your version supports it.

mewse 8y ago
With lld, that single-file rebuild+relink drops from 1.6 seconds (with gold) to 1.2 seconds. lld spits out a bunch of warnings that neither ld nor gold cared about, about finding local symbols in the global symbol table of some of the third-party .so libraries I link against. Not sure to what extent I should care about that; the final build product does run the same as always. And just so that nobody else needs to go searching; looks like ccache added support for split dwarf debugging data in its version 3.2.3, about three years ago. (although I haven't actually tried it to confirm, yet)