Auto merge of #115267 - nikic:revert-elf-relaxation, r=compiler-errors

Revert relax_elf_relocations default change

This reverts commit 4410868 (#106511).

The change caused linker failures with the binutils version used by cross (#115239), as well as miscompilations when using the mold linker (https://rust-lang.zulipchat.com/#narrow/stream/122651-general/topic/SIGILL.20in.20build-script-build.20with.20nightly-2023-08-25/near/387506479).

Author: bors

compiler/rustc_interface/src/tests.rs

@@ -822,7 +822,7 @@ fn test_unstable_options_tracking_hash() {
     tracked!(profile_emit, Some(PathBuf::from("abc")));
     tracked!(profile_sample_use, Some(PathBuf::from("abc")));
     tracked!(profiler_runtime, "abc".to_string());
-    tracked!(relax_elf_relocations, Some(false));
+    tracked!(relax_elf_relocations, Some(true));
     tracked!(relro_level, Some(RelroLevel::Full));
     tracked!(remap_cwd_prefix, Some(PathBuf::from("abc")));
     tracked!(report_delayed_bugs, true);

compiler/rustc_target/src/spec/mod.rs

@@ -2216,7 +2216,7 @@ impl Default for TargetOptions {
             mcount: "mcount".into(),
             llvm_mcount_intrinsic: None,
             llvm_abiname: "".into(),
-            relax_elf_relocations: true,
+            relax_elf_relocations: false,
             llvm_args: cvs![],
             use_ctors_section: false,
             eh_frame_header: true,

compiler/rustc_target/src/spec/x86_64_fortanix_unknown_sgx.rs

@@ -69,6 +69,7 @@ pub fn target() -> Target {
         position_independent_executables: true,
         pre_link_args,
         override_export_symbols: Some(EXPORT_SYMBOLS.iter().cloned().map(Cow::from).collect()),
+        relax_elf_relocations: true,
         ..Default::default()
     };
     Target {