internal/rosa/llvm: enable libclc as a runtime

Enabling this as a project is deprecated.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/llvm.go

@@ -50,8 +50,17 @@ func (t Toolchain) newLLVM() (pkg.Artifact, string) {
 
 		{"LLVM_HOST_TRIPLE", `"${ROSA_TRIPLE}"`},
 		{"LLVM_DEFAULT_TARGET_TRIPLE", `"${ROSA_TRIPLE}"`},
-		{"LLVM_ENABLE_PROJECTS", "'clang;lld;libclc'"},
-		{"LLVM_ENABLE_RUNTIMES", "'compiler-rt;libcxx;libcxxabi;libunwind'"},
+		{"LLVM_ENABLE_PROJECTS", "'" + strings.Join([]string{
+			"clang",
+			"lld",
+		}, ";") + "'"},
+		{"LLVM_ENABLE_RUNTIMES", "'" + strings.Join([]string{
+			"compiler-rt",
+			"libcxx",
+			"libcxxabi",
+			"libunwind",
+			"libclc",
+		}, ";") + "'"},
 	}
 
 	if !t.isStage0() {