add dummy benchmark project

CMakeLists.txt

@@ -10,9 +10,14 @@ project(flat.hpp)
 add_library(${PROJECT_NAME} INTERFACE)
 target_include_directories(${PROJECT_NAME} INTERFACE headers)
 target_compile_features(${PROJECT_NAME} INTERFACE cxx_std_14)
-add_library(${PROJECT_NAME}::${PROJECT_NAME} ALIAS ${PROJECT_NAME})
 
 if(BUILD_AS_STANDALONE)
+    option(BUILD_WITH_UNBENCH "Build with benchmarks" OFF)
+    if(BUILD_WITH_UNBENCH)
+        enable_testing()
+        add_subdirectory(unbench)
+    endif()
+
     option(BUILD_WITH_UNTESTS "Build with unit tests" ON)
     if(BUILD_WITH_UNTESTS)
         enable_testing()

unbench/CMakeLists.txt

@@ -0,0 +1,24 @@
+# 3.11 version is required for `FetchContent`
+cmake_minimum_required(VERSION 3.11 FATAL_ERROR)
+
+project(flat.hpp.unbench)
+
+set(BENCHMARK_ENABLE_TESTING OFF CACHE BOOL "" FORCE)
+
+include(FetchContent)
+FetchContent_Declare(
+    gbench
+    GIT_REPOSITORY https://github.com/google/benchmark)
+
+FetchContent_GetProperties(gbench)
+if(NOT gbench_POPULATED)
+    FetchContent_Populate(gbench)
+    add_subdirectory(${gbench_SOURCE_DIR} ${gbench_BINARY_DIR})
+endif()
+
+file(GLOB UNBENCH_SOURCES "*.cpp" "*.hpp")
+add_executable(${PROJECT_NAME} ${UNBENCH_SOURCES})
+target_link_libraries(${PROJECT_NAME}
+    benchmark_main
+    flat.hpp)
+add_test(${PROJECT_NAME} ${PROJECT_NAME})

unbench/flat_map_bench.cpp

@@ -0,0 +1,21 @@
+/*******************************************************************************
+ * This file is part of the "https://github.com/blackmatov/flat.hpp"
+ * For conditions of distribution and use, see copyright notice in LICENSE.md
+ * Copyright (C) 2019, by Matvey Cherevko (blackmatov@gmail.com)
+ ******************************************************************************/
+
+#include <benchmark/benchmark.h>
+
+#include <flat_hpp/flat_map.hpp>
+using namespace flat_hpp;
+
+namespace
+{
+    void flat_map_default_ctor(benchmark::State& state) {
+        for ( auto _ : state ) {
+            flat_map<int, unsigned> s0;
+        }
+    }
+}
+
+BENCHMARK(flat_map_default_ctor);

unbench/flat_set_bench.cpp

@@ -0,0 +1,21 @@
+/*******************************************************************************
+ * This file is part of the "https://github.com/blackmatov/flat.hpp"
+ * For conditions of distribution and use, see copyright notice in LICENSE.md
+ * Copyright (C) 2019, by Matvey Cherevko (blackmatov@gmail.com)
+ ******************************************************************************/
+
+#include <benchmark/benchmark.h>
+
+#include <flat_hpp/flat_set.hpp>
+using namespace flat_hpp;
+
+namespace
+{
+    void flat_set_default_ctor(benchmark::State& state) {
+        for ( auto _ : state ) {
+            flat_set<int> s0;
+        }
+    }
+}
+
+BENCHMARK(flat_set_default_ctor);

untests/CMakeLists.txt

@@ -3,6 +3,8 @@ cmake_minimum_required(VERSION 3.11 FATAL_ERROR)
 
 project(flat.hpp.untests)
 
+set(CATCH_BUILD_TESTING OFF CACHE BOOL "" FORCE)
+
 include(FetchContent)
 FetchContent_Declare(
     catch2
@@ -17,6 +19,6 @@ endif()
 file(GLOB UNTESTS_SOURCES "*.cpp" "*.hpp")
 add_executable(${PROJECT_NAME} ${UNTESTS_SOURCES})
 target_link_libraries(${PROJECT_NAME}
-    Catch2::Catch2
-    flat.hpp::flat.hpp)
+    Catch2
+    flat.hpp)
 add_test(${PROJECT_NAME} ${PROJECT_NAME})