Rollup merge of #132950 - knickish:m68k_gnu_ld, r=workingjubilee

Use GNU ld on m68k-unknown-linux-gnu

LLD does not really support the M68k architecture yet, specify `m68k-linux-gnu-ld` as the linker for the platform

compiler/rustc_target/src/spec/targets/m68k_unknown_linux_gnu.rs

@@ -1,5 +1,5 @@
 use crate::abi::Endian;
-use crate::spec::{Target, TargetOptions, base};
+use crate::spec::{LinkSelfContainedDefault, Target, TargetOptions, base};
 
 pub(crate) fn target() -> Target {
     let mut base = base::linux_gnu::opts();
@@ -17,6 +17,13 @@ pub(crate) fn target() -> Target {
         pointer_width: 32,
         data_layout: "E-m:e-p:32:16:32-i8:8:8-i16:16:16-i32:16:32-n8:16:32-a:0:16-S16".into(),
         arch: "m68k".into(),
-        options: TargetOptions { endian: Endian::Big, mcount: "_mcount".into(), ..base },
+        options: TargetOptions {
+            endian: Endian::Big,
+            mcount: "_mcount".into(),
+
+            // LLD currently does not have support for M68k
+            link_self_contained: LinkSelfContainedDefault::False,
+            ..base
+        },
     }
 }