fixup! fable: Fix excessive compilation duration

fable/CMakeLists.txt

@@ -24,6 +24,7 @@ add_library(${target}
     src/fable/confable.cpp
     src/fable/json.cpp
     src/fable/schema.cpp
+    src/fable/make_schema.cpp
     src/fable/schema/boolean.cpp
     src/fable/schema/number.cpp
     src/fable/schema/struct.cpp

fable/include/fable/make_schema.hpp

@@ -100,4 +100,24 @@ auto make_schema(T* ptr, P proto, std::string&& desc) {
   return details::make_schema_wrapper2<T, P>::make_schema(ptr, std::move(proto), std::move(desc));
 }
 
+// Pre-Instantiate above templates for relevant datatypes
+
+#define FABLE_TYPES()     \
+  FABLE_TYPES_X(bool)     \
+  FABLE_TYPES_X(int8_t)   \
+  FABLE_TYPES_X(uint8_t)  \
+  FABLE_TYPES_X(int16_t)  \
+  FABLE_TYPES_X(uint16_t) \
+  FABLE_TYPES_X(int32_t)  \
+  FABLE_TYPES_X(uint32_t) \
+  FABLE_TYPES_X(int64_t)  \
+  FABLE_TYPES_X(uint64_t) \
+  FABLE_TYPES_X(float)    \
+  FABLE_TYPES_X(double)
+
+#define FABLE_TYPES_X(TYPE) \
+  extern template struct ::fable::schema::details::make_schema_wrapper1<TYPE>;
+
+FABLE_TYPES()
+
 }  // namespace fable::schema

fable/src/fable/make_schema.cpp

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2023 Robert Bosch GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <fable/make_schema.hpp>
+
+namespace fable::schema {
+
+#define extern
+FABLE_TYPES()
+#undef extern
+
+}