Build and test cg_clif by default except for distros

Author: bjorn3

config.example.toml

@@ -618,7 +618,7 @@ changelog-seen = 2
 # and currently the only standard options supported are `"llvm"`, `"cranelift"`
 # and `"gcc"`. The first backend in this list will be used as default by rustc
 # when no explicit backend is specified.
-#codegen-backends = ["llvm"]
+#codegen-backends = ["llvm", "cranelift"]
 
 # Indicates whether LLD will be compiled and made available in the sysroot for
 # rustc to execute.

src/bootstrap/config.rs

@@ -1065,7 +1065,8 @@ impl Config {
         config.channel = "dev".to_string();
         config.codegen_tests = true;
         config.rust_dist_src = true;
-        config.rust_codegen_backends = vec![INTERNER.intern_str("llvm")];
+        config.rust_codegen_backends =
+            vec![INTERNER.intern_str("llvm"), INTERNER.intern_str("cranelift")];
         config.deny_warnings = true;
         config.bindir = "bin".into();
         config.dist_include_mingw_linker = true;

src/bootstrap/defaults/config.dist.toml

@@ -16,6 +16,8 @@ download-ci-llvm = false
 # Make sure they don't get set when installing from source.
 channel = "nightly"
 download-rustc = false
+# Skip building the cranelift backend. It isn't ready to be shipped yet.
+codegen-backends = ["llvm"]
 
 [dist]
 # Use better compression when preparing tarballs.