[windows-gnu] Link pthread statically

src/librustc_target/spec/windows_base.rs

@@ -57,9 +57,9 @@ pub fn opts() -> TargetOptions {
             // binaries to be redistributed without the libgcc_s-dw2-1.dll
             // dependency, but unfortunately break unwinding across DLL
             // boundaries when unwinding across FFI boundaries.
-            "-lgcc".to_string(),
             "-lgcc_eh".to_string(),
-            "-lpthread".to_string(),
+            "-l:libpthread.a".to_string(),
+            "-lgcc".to_string(),
             // libpthread depends on libmsvcrt, so we need to link it *again*.
             "-lmsvcrt".to_string(),
             "-lkernel32".to_string(),