Add Emscripten compat include paths to wasm kernel specs (#409)

* Add Emscripten compat include paths to wasm kernel specs.
Add supporting tests

Author: anutosh491

share/jupyter/kernels/xc11/wasm_kernel.json.in

@@ -3,6 +3,7 @@
   "argv": [
       "@XEUS_CPP_KERNELSPEC_PATH@xcpp",
       "-resource-dir", "/lib/clang/@CPPINTEROP_LLVM_VERSION_MAJOR@",
+      "-Xclang", "-iwithsysroot/include/compat",
       "-xc",
       "-std=c11",
       "-mllvm", "-enable-emscripten-sjlj",

share/jupyter/kernels/xc17/wasm_kernel.json.in

@@ -3,6 +3,7 @@
   "argv": [
       "@XEUS_CPP_KERNELSPEC_PATH@xcpp",
       "-resource-dir", "/lib/clang/@CPPINTEROP_LLVM_VERSION_MAJOR@",
+      "-Xclang", "-iwithsysroot/include/compat",
       "-xc",
       "-std=c17",
       "-mllvm", "-enable-emscripten-sjlj",

share/jupyter/kernels/xc23/wasm_kernel.json.in

@@ -3,6 +3,7 @@
   "argv": [
       "@XEUS_CPP_KERNELSPEC_PATH@xcpp",
       "-resource-dir", "/lib/clang/@CPPINTEROP_LLVM_VERSION_MAJOR@",
+      "-Xclang", "-iwithsysroot/include/compat",
       "-xc",
       "-std=c23",
       "-mllvm", "-enable-emscripten-sjlj",

share/jupyter/kernels/xcpp17/wasm_kernel.json.in

@@ -3,6 +3,7 @@
   "argv": [
       "@XEUS_CPP_KERNELSPEC_PATH@xcpp",
       "-resource-dir", "/lib/clang/@CPPINTEROP_LLVM_VERSION_MAJOR@",
+      "-Xclang", "-iwithsysroot/include/compat",
       "-std=c++17", "-mllvm", "-enable-emscripten-cxx-exceptions",
       "-mllvm", "-enable-emscripten-sjlj", "-msimd128"
   ],

share/jupyter/kernels/xcpp20/wasm_kernel.json.in

@@ -3,6 +3,7 @@
   "argv": [
       "@XEUS_CPP_KERNELSPEC_PATH@xcpp",
       "-resource-dir", "/lib/clang/@CPPINTEROP_LLVM_VERSION_MAJOR@",
+      "-Xclang", "-iwithsysroot/include/compat",
       "-std=c++20", "-mllvm", "-enable-emscripten-cxx-exceptions",
       "-mllvm", "-enable-emscripten-sjlj", "-msimd128"
   ],

share/jupyter/kernels/xcpp23/wasm_kernel.json.in

@@ -3,6 +3,7 @@
   "argv": [
       "@XEUS_CPP_KERNELSPEC_PATH@xcpp",
       "-resource-dir", "/lib/clang/@CPPINTEROP_LLVM_VERSION_MAJOR@",
+      "-Xclang", "-iwithsysroot/include/compat",
       "-std=c++23", "-mllvm", "-enable-emscripten-cxx-exceptions",
       "-mllvm", "-enable-emscripten-sjlj", "-msimd128"
   ],

test/test_interpreter.cpp

@@ -99,6 +99,43 @@ TEST_SUITE("execute_request")
         REQUIRE(result["status"] == "ok");
     }
 
+#if defined(XEUS_CPP_EMSCRIPTEN_WASM_BUILD)
+    TEST_CASE("headers found in sysroot/include/compat")
+    {
+        std::vector<const char*> Args = {
+            "-v",
+            "-Xclang", "-iwithsysroot/include/compat"
+        };
+
+        xcpp::interpreter interpreter((int)Args.size(), Args.data());
+        std::string code = "#include <xlocale.h>";
+        nl::json user_expressions = nl::json::object();
+        xeus::execute_request_config config;
+        config.silent = false;
+        config.store_history = false;
+        config.allow_stdin = false;
+        nl::json header = nl::json::object();
+        xeus::xrequest_context::guid_list id = {};
+        xeus::xrequest_context context(header, id);
+
+        std::promise<nl::json> promise;
+        std::future<nl::json> future = promise.get_future();
+        auto callback = [&promise](nl::json result) {
+            promise.set_value(result);
+        };
+
+        interpreter.execute_request(
+            std::move(context),
+            std::move(callback),
+            code,
+            std::move(config),
+            user_expressions
+        );
+        nl::json result = future.get();
+        REQUIRE(result["status"] == "ok");
+    }
+#endif
+
     TEST_CASE("fetch_documentation")
     {
         std::vector<const char*> Args = {/*"-v", "resource-dir", "....."*/};