wrappers: link with the Windows Store specific runtime for UWP

wrappers/clang-target-wrapper.c

@@ -305,6 +305,8 @@ int _tmain(int argc, TCHAR* argv[]) {
         exec_argv[arg++] = _T("-DUNICODE");
         // add the minimum runtime to use for UWP targets
         exec_argv[arg++] = _T("-Wl,-lmincore");
+        // This requires that the default crt is ucrt.
+        exec_argv[arg++] = _T("-Wl,-lvcruntime140_app");
     }
 
     exec_argv[arg++] = _T("-target");

wrappers/clang-target-wrapper.sh

@@ -63,6 +63,8 @@ mingw32uwp)
     FLAGS="$FLAGS -DUNICODE"
     # add the minimum runtime to use for UWP targets
     FLAGS="$FLAGS -Wl,-lmincore"
+    # This requires that the default crt is ucrt.
+    FLAGS="$FLAGS -Wl,-lvcruntime140_app"
     ;;
 esac
 

wrappers/ld-wrapper.sh

@@ -36,7 +36,7 @@ esac
 FLAGS="-m $M"
 case $TARGET_OS in
 mingw32uwp)
-    FLAGS="$FLAGS -lmincore"
+    FLAGS="$FLAGS -lmincore -lvcruntime140_app"
     ;;
 esac
 ld.lld $FLAGS "$@"