enable LTO in optimized builds

gives 2-5% performance improvement across a board of tests. LTO is broken when using clang; some libs link fine while others crash the linker with a segfault in the llvm linker plugin. 🙁
2022-03-03 17:47:49 +01:00
parent 6097790863
commit 2799fe4cdb
6 changed files with 25 additions and 6 deletions
@@ -26,3 +26,6 @@

 * Templates can now define a `welcomeText` attribute, which is printed out by
  `nix flake {init,new} --template <template>`.
+
+* Nix can now be built with LTO by passing `--enable-lto` to `configure`.
+  LTO is currently only supported when building with GCC.