Make tier 3 musl targets link dynamically by default

Since we don't build std for these and don't provide any support for
them, these can trivially be changed to link dynamically by default.

Signed-off-by: Jens Reidel <[email protected]>

Author: Gelbpunkt

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

@@ -7,7 +7,6 @@ pub(crate) fn target() -> Target {
     // FIXME: HVX length defaults are per-CPU
     base.features = "-small-data,+hvx-length128b".into();
 
-    base.crt_static_default = false;
     base.has_rpath = true;
     base.linker_flavor = LinkerFlavor::Unix(Cc::Yes);
 

compiler/rustc_target/src/spec/targets/mips64_unknown_linux_muslabi64.rs

@@ -23,8 +23,6 @@ pub(crate) fn target() -> Target {
             abi: "abi64".into(),
             endian: Endian::Big,
             mcount: "_mcount".into(),
-            // FIXME(compiler-team#422): musl targets should be dynamically linked by default.
-            crt_static_default: true,
             llvm_abiname: "n64".into(),
             ..base
         },

compiler/rustc_target/src/spec/targets/powerpc64_unknown_linux_musl.rs

@@ -10,8 +10,6 @@ pub(crate) fn target() -> Target {
     base.add_pre_link_args(LinkerFlavor::Gnu(Cc::Yes, Lld::No), &["-m64"]);
     base.max_atomic_width = Some(64);
     base.stack_probes = StackProbeType::Inline;
-    // FIXME(compiler-team#422): musl targets should be dynamically linked by default.
-    base.crt_static_default = true;
     base.abi = "elfv2".into();
     base.llvm_abiname = "elfv2".into();
 

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

@@ -9,8 +9,6 @@ pub(crate) fn target() -> Target {
     base.add_pre_link_args(LinkerFlavor::Gnu(Cc::Yes, Lld::No), &["-m32"]);
     base.max_atomic_width = Some(32);
     base.stack_probes = StackProbeType::Inline;
-    // FIXME(compiler-team#422): musl targets should be dynamically linked by default.
-    base.crt_static_default = true;
 
     Target {
         llvm_target: "powerpc-unknown-linux-musl".into(),

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

@@ -9,8 +9,6 @@ pub(crate) fn target() -> Target {
     base.add_pre_link_args(LinkerFlavor::Gnu(Cc::Yes, Lld::No), &["-mspe"]);
     base.max_atomic_width = Some(32);
     base.stack_probes = StackProbeType::Inline;
-    // FIXME(compiler-team#422): musl targets should be dynamically linked by default.
-    base.crt_static_default = true;
 
     Target {
         llvm_target: "powerpc-unknown-linux-muslspe".into(),

compiler/rustc_target/src/spec/targets/riscv32gc_unknown_linux_musl.rs

@@ -23,8 +23,6 @@ pub(crate) fn target() -> Target {
             llvm_abiname: "ilp32d".into(),
             max_atomic_width: Some(32),
             supported_split_debuginfo: Cow::Borrowed(&[SplitDebuginfo::Off]),
-            // FIXME(compiler-team#422): musl targets should be dynamically linked by default.
-            crt_static_default: true,
             ..base::linux_musl::opts()
         },
     }

compiler/rustc_target/src/spec/targets/s390x_unknown_linux_musl.rs

@@ -13,8 +13,6 @@ pub(crate) fn target() -> Target {
     base.stack_probes = StackProbeType::Inline;
     base.supported_sanitizers =
         SanitizerSet::ADDRESS | SanitizerSet::LEAK | SanitizerSet::MEMORY | SanitizerSet::THREAD;
-    // FIXME(compiler-team#422): musl targets should be dynamically linked by default.
-    base.crt_static_default = true;
 
     Target {
         llvm_target: "s390x-unknown-linux-musl".into(),

compiler/rustc_target/src/spec/targets/thumbv7neon_unknown_linux_musleabihf.rs

@@ -27,8 +27,6 @@ pub(crate) fn target() -> Target {
             features: "+v7,+thumb-mode,+thumb2,+vfp3,+neon".into(),
             max_atomic_width: Some(64),
             mcount: "\u{1}mcount".into(),
-            // FIXME(compiler-team#422): musl targets should be dynamically linked by default.
-            crt_static_default: true,
             ..base::linux_musl::opts()
         },
     }