Adjust linker_is_gnu branches for cases that don't work on windows.

Author: luqmana

compiler/rustc_codegen_ssa/src/back/linker.rs

@@ -276,18 +276,27 @@ impl<'a> Linker for GccLinker<'a> {
     fn set_output_kind(&mut self, output_kind: LinkOutputKind, out_filename: &Path) {
         match output_kind {
             LinkOutputKind::DynamicNoPicExe => {
-                if !self.is_ld && self.sess.target.linker_is_gnu {
+                if !self.is_ld
+                    && self.sess.target.linker_is_gnu
+                    && !self.sess.target.is_like_windows
+                {
                     self.cmd.arg("-no-pie");
                 }
             }
             LinkOutputKind::DynamicPicExe => {
-                // `-pie` works for both gcc wrapper and ld.
-                self.cmd.arg("-pie");
+                // noop on windows w/ gcc & ld, error w/ lld
+                if !self.sess.target.is_like_windows {
+                    // `-pie` works for both gcc wrapper and ld
+                    self.cmd.arg("-pie");
+                }
             }
             LinkOutputKind::StaticNoPicExe => {
                 // `-static` works for both gcc wrapper and ld.
                 self.cmd.arg("-static");
-                if !self.is_ld && self.sess.target.linker_is_gnu {
+                if !self.is_ld
+                    && self.sess.target.linker_is_gnu
+                    && !self.sess.target.is_like_windows
+                {
                     self.cmd.arg("-no-pie");
                 }
             }
@@ -347,7 +356,7 @@ impl<'a> Linker for GccLinker<'a> {
                 // has -needed-l{} / -needed_library {}
                 // but we have no way to detect that here.
                 self.sess.warn("`as-needed` modifier not implemented yet for ld64");
-            } else if self.sess.target.linker_is_gnu {
+            } else if self.sess.target.linker_is_gnu && !self.sess.target.is_like_windows {
                 self.linker_arg("--no-as-needed");
             } else {
                 self.sess.warn("`as-needed` modifier not supported for current linker");
@@ -358,7 +367,7 @@ impl<'a> Linker for GccLinker<'a> {
         if !as_needed {
             if self.sess.target.is_like_osx {
                 // See above FIXME comment
-            } else if self.sess.target.linker_is_gnu {
+            } else if self.sess.target.linker_is_gnu && !self.sess.target.is_like_windows {
                 self.linker_arg("--as-needed");
             }
         }
@@ -690,7 +699,7 @@ impl<'a> Linker for GccLinker<'a> {
     }
 
     fn add_as_needed(&mut self) {
-        if self.sess.target.linker_is_gnu {
+        if self.sess.target.linker_is_gnu && !self.sess.target.is_like_windows {
             self.linker_arg("--as-needed");
         } else if self.sess.target.is_like_solaris {
             // -z ignore is the Solaris equivalent to the GNU ld --as-needed option