Add error for no Linux swiftc path (#466)

Fixes #16
bazelbuild · Aug 11, 2020 · b255732 · b255732
1 parent 616439c
commit b255732
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/swift/internal/swift_autoconfiguration.bzl b/swift/internal/swift_autoconfiguration.bzl
@@ -203,6 +203,9 @@ def _create_linux_toolchain(repository_ctx):
              "in your environment before invoking Bazel.")
 
     path_to_swiftc = repository_ctx.which("swiftc")
+    if not path_to_swiftc:
+        fail("No 'swiftc' executable found in $PATH")
+
     root = path_to_swiftc.dirname.dirname
     feature_values = _compute_feature_values(repository_ctx, path_to_swiftc)
     version_file = _write_swift_version(repository_ctx, path_to_swiftc)