(#24262) reflect-cpp: add option for using with msgpack

* reflect-cpp: add option for using with msgpack

* reflect-cpp: fix with_msgpack option

---------

Co-authored-by: Luis Caro Campos <3535649+jcar87@users.noreply.github.com>

recipes/reflect-cpp/all/conanfile.py

@@ -22,12 +22,14 @@ class ReflectCppConan(ConanFile):
         "with_xml" : [True, False],
         "with_flatbuffers" : [True, False],
         "with_yaml": [True, False],
+        "with_msgpack": [True, False],
     }
     default_options = {
         "with_json" : False,
         "with_xml" : False,
         "with_flatbuffers" : False,
         "with_yaml" : False,
+        "with_msgpack":  False,
     }
 
     @property
@@ -56,6 +58,8 @@ def requirements(self):
             self.requires("flatbuffers/23.5.26", transitive_headers=True)
         if self.options.with_yaml:
             self.requires("yaml-cpp/0.8.0", transitive_headers=True)
+        if self.options.with_msgpack:
+            self.requires("msgpack-c/6.0.0", transitive_headers=True)
 
     def package_id(self):
         self.info.clear()

recipes/reflect-cpp/all/test_package/CMakeLists.txt

@@ -1,12 +1,12 @@
 cmake_minimum_required(VERSION 3.12)
 project(test_package LANGUAGES CXX)
 
-if (NOT CMAKE_CXX_STANDARD)
-    set(CMAKE_CXX_STANDARD 20)
-endif()
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
-
 find_package(reflect-cpp REQUIRED CONFIG)
 
 add_executable(${PROJECT_NAME} test_package.cpp)
 target_link_libraries(${PROJECT_NAME} PRIVATE reflect-cpp::reflect-cpp)
+target_compile_features(${PROJECT_NAME} PRIVATE cxx_std_20)
+
+if(CONAN_TEST_WITH_MSGPACK)
+  target_compile_definitions(${PROJECT_NAME} PRIVATE CONAN_TEST_WITH_MSGPACK)
+endif()

recipes/reflect-cpp/all/test_package/conanfile.py

@@ -1,19 +1,25 @@
 from conan import ConanFile
 from conan.tools.build import can_run
-from conan.tools.cmake import cmake_layout, CMake
+from conan.tools.cmake import cmake_layout, CMake, CMakeToolchain
 import os
 
 
 class TestPackageConan(ConanFile):
     settings = "os", "arch", "compiler", "build_type"
-    generators = "CMakeDeps", "CMakeToolchain", "VirtualRunEnv"
+    generators = "CMakeDeps", "VirtualRunEnv"
     test_type = "explicit"
 
     def requirements(self):
         self.requires(self.tested_reference_str)
 
     def layout(self):
         cmake_layout(self)
+
+    def generate(self):
+        tc = CMakeToolchain(self)
+        if self.dependencies[self.tested_reference_str].options.with_msgpack:
+            tc.cache_variables["CONAN_TEST_WITH_MSGPACK"] = True
+        tc.generate()
 
     def build(self):
         cmake = CMake(self)

recipes/reflect-cpp/all/test_package/test_package.cpp

@@ -1,6 +1,11 @@
 #include <string>
+#include <iostream>
 #include <rfl.hpp>
 
+#if defined(CONAN_TEST_WITH_MSGPACK)
+  #include <rfl/msgpack.hpp>
+#endif
+
 struct TestStruct {
     int x;
     std::string name;
@@ -11,5 +16,14 @@ int main(void) {
         (void) f.name();
         (void) f.type();
     }
+
+#if defined(CONAN_TEST_WITH_MSGPACK)
+    const auto test = TestStruct{.x = 15, .name = "test_package"};
+    std::cout << "msgpack test: ";
+    rfl::msgpack::write(test, std::cout) << std::endl;
+#endif
+
+    std::cout << "reflect-cpp test successful\n";
+
     return 0;
 }