set SDKROOT for macos build

.github/workflows/macos.yml

@@ -26,24 +26,6 @@ jobs:
               with:
                   go-version-file: gomuks/go.mod
 
-            - name: Debug macOS compiler
-              run: |
-                  echo "CC:"
-                  go env CC
-
-                  echo "SDKROOT:"
-                  echo "$SDKROOT"
-
-                  echo "xcrun SDK:"
-                  xcrun --sdk macosx --show-sdk-path
-
-                  echo "clang:"
-                  xcrun --sdk macosx --find clang
-
-                  echo "clang search paths:"
-                  echo '#include <stdlib.h>' | \
-                  xcrun --sdk macosx clang -v -E -x c - >/dev/null
-
             - name: Build app
               run: |
                   flutter pub get

hook/build.dart

@@ -48,6 +48,9 @@ Future<void> main(List<String> args) => build(args, (input, output) async {
       break;
     case OS.macOS:
       libFileName = "libgomuks.dylib";
+
+      extraEnv = {"SDKROOT": await getXCodeTool()};
+
       break;
     case OS.windows:
       libFileName = "libgomuks.dll";