ADD - codegen_ssa initial diags translations machinery

ADD - migrate MissingNativeStaticLibrary fatal error

compiler/rustc_codegen_ssa/src/errors.rs

@@ -0,0 +1,9 @@
+//! Errors emitted by codegen_ssa
+
+use rustc_macros::SessionDiagnostic;
+
+#[derive(SessionDiagnostic)]
+#[diag(codegen_ssa::missing_native_static_library)]
+pub struct MissingNativeStaticLibrary<'a> {
+    pub library_name: &'a str,
+}

compiler/rustc_codegen_ssa/src/lib.rs

@@ -43,6 +43,7 @@ pub mod base;
 pub mod common;
 pub mod coverageinfo;
 pub mod debuginfo;
+pub mod errors;
 pub mod glue;
 pub mod meth;
 pub mod mir;

compiler/rustc_error_messages/locales/en-US/codegen_ssa.ftl

@@ -0,0 +1 @@
+codegen_ssa_missing_native_static_library = could not find native static library `{$library_name}`, perhaps an -L flag is missing?

compiler/rustc_error_messages/src/lib.rs

@@ -63,6 +63,7 @@ fluent_messages! {
     symbol_mangling => "../locales/en-US/symbol_mangling.ftl",
     trait_selection => "../locales/en-US/trait_selection.ftl",
     ty_utils => "../locales/en-US/ty_utils.ftl",
+    codegen_ssa => "../locales/en-US/codegen_ssa.ftl",
 }
 
 pub use fluent_generated::{self as fluent, DEFAULT_LOCALE_RESOURCES};