Optionally depend on libstdxx for windows (#383)

bazelbuild · Jul 27, 2020 · fdf9655 · fdf9655
1 parent 7004ca3
commit fdf9655
Showing 1 changed file with 13 additions and 8 deletions.
diff --git a/bindgen/bindgen.bzl b/bindgen/bindgen.bzl
@@ -93,26 +93,31 @@ def _rust_bindgen_impl(ctx):
     args.add_all(quote_include_directories, before_each = "-iquote")
     args.add_all(system_include_directories, before_each = "-isystem")
     args.add_all(clang_args)
+
+    env = {
+        "RUST_BACKTRACE": "1",
+        "CLANG_PATH": clang_bin.path,
+        "LIBCLANG_PATH": libclang_dir,
+    }
+
+    if libstdcxx:
+        env["LD_LIBRARY_PATH"] = ":".join([f.dirname for f in get_libs_for_static_executable(libstdcxx).to_list()])
+
     ctx.actions.run(
         executable = bindgen_bin,
         inputs = depset(
             [header],
             transitive = [
                 cc_lib[CcInfo].compilation_context.headers,
                 get_libs_for_static_executable(libclang),
+            ] + [
                 get_libs_for_static_executable(libstdcxx),
-            ],
+            ] if libstdcxx else [],
         ),
         outputs = [unformatted_output],
         mnemonic = "RustBindgen",
         progress_message = "Generating bindings for {}..".format(header.path),
-        env = {
-            "RUST_BACKTRACE": "1",
-            "CLANG_PATH": clang_bin.path,
-            # Bindgen loads libclang at runtime, which also needs libstdc++, so we setup LD_LIBRARY_PATH
-            "LIBCLANG_PATH": libclang_dir,
-            "LD_LIBRARY_PATH": ":".join([f.dirname for f in get_libs_for_static_executable(libstdcxx).to_list()]),
-        },
+        env = env,
         arguments = [args],
         tools = [clang_bin],
     )