Rollup merge of rust-lang#146858 - Gelbpunkt:mips64el-musl-dynamic, r=jieyouxu

Make mips64el-unknown-linux-muslabi64 link dynamically

I missed this target when I changed all the other tier 3 targets in rust-lang#144410. Only realized that this one was still statically linked when I looked at the list of targets in the test later (rust-lang#146588).

since those two PRs were reviewed by you:
r? ````@jieyouxu````

Author: Zalathar

compiler/rustc_target/src/spec/targets/mips64el_unknown_linux_muslabi64.rs

@@ -5,8 +5,6 @@ pub(crate) fn target() -> Target {
     base.cpu = "mips64r2".into();
     base.features = "+mips64r2,+xgot".into();
     base.max_atomic_width = Some(64);
-    // FIXME(compiler-team#422): musl targets should be dynamically linked by default.
-    base.crt_static_default = true;
     Target {
         // LLVM doesn't recognize "muslabi64" yet.
         llvm_target: "mips64el-unknown-linux-musl".into(),

tests/run-make/musl-default-linking/rmake.rs

@@ -4,7 +4,7 @@ use run_make_support::{rustc, serde_json};
 // Per https://github.com/rust-lang/compiler-team/issues/422,
 // we should be trying to move these targets to dynamically link
 // musl libc by default.
-//@ needs-llvm-components: aarch64 arm mips powerpc x86
+//@ needs-llvm-components: aarch64 arm powerpc x86
 static LEGACY_STATIC_LINKING_TARGETS: &[&'static str] = &[
     "aarch64-unknown-linux-musl",
     "arm-unknown-linux-musleabi",
@@ -14,7 +14,6 @@ static LEGACY_STATIC_LINKING_TARGETS: &[&'static str] = &[
     "armv7-unknown-linux-musleabihf",
     "i586-unknown-linux-musl",
     "i686-unknown-linux-musl",
-    "mips64el-unknown-linux-muslabi64",
     "powerpc64le-unknown-linux-musl",
     "x86_64-unknown-linux-musl",
 ];