Merge pull request #160 from eseiler/infra/google

[INFRA] google

README.md

@@ -95,7 +95,7 @@ If you are working in the field of sequence analysis, we recommend using the
 
 An application with one option parsing an integer from the command line can be written in only 5 lines of code:
 
-<!-- MARKDOWN-AUTO-DOCS:START (CODE:src=./test/snippet/readme_sneak_peek.cpp&lines=3-13) -->
+<!-- MARKDOWN-AUTO-DOCS:START (CODE:src=./test/snippet/readme_sneak_peek.cpp&lines=3-15) -->
 <!-- The below code snippet is automatically added from ./test/snippet/readme_sneak_peek.cpp -->
 ```cpp
 #include <sharg/all.hpp>

include/sharg/detail/format_base.hpp

@@ -212,9 +212,9 @@ class format_help_base : public format_base
     format_help_base(std::vector<std::string> const & names,
                      update_notifications const version_updates,
                      bool const advanced) :
+        version_check_dev_decision{version_updates},
         command_names{names},
-        show_advanced_options{advanced},
-        version_check_dev_decision{version_updates}
+        show_advanced_options{advanced}
     {}
     //!\}
 

test/cmake/sharg_require_benchmark.cmake

@@ -7,28 +7,35 @@
 
 cmake_minimum_required (VERSION 3.16)
 
-# Exposes the google-benchmark target `gbenchmark`.
+# Exposes the google-benchmark target `benchmark` and `benchmark_main`.
+# CMake 3.24: https://cmake.org/cmake/help/latest/module/FetchContent.html#variable:FETCHCONTENT_TRY_FIND_PACKAGE_MODE
 macro (sharg_require_benchmark)
     enable_testing ()
 
-    set (gbenchmark_git_tag "v1.7.0")
+    set (benchmark_version "1.7.0")
+    set (gbenchmark_git_tag "v${benchmark_version}")
 
-    message (STATUS "Fetch Google Benchmark:")
+    find_package (benchmark ${benchmark_version} EXACT QUIET)
 
-    include (FetchContent)
-    FetchContent_Declare (
-        gbenchmark_fetch_content
-        GIT_REPOSITORY "https://github.com/google/benchmark.git"
-        GIT_TAG "${gbenchmark_git_tag}")
-    option (BENCHMARK_ENABLE_TESTING "" OFF)
-    option (BENCHMARK_ENABLE_WERROR "" OFF) # Does not apply to Debug builds.
-    FetchContent_MakeAvailable (gbenchmark_fetch_content)
+    if (NOT benchmark_FOUND)
+        message (STATUS "Fetching Google Benchmark ${benchmark_version}")
 
-    # NOTE: google benchmark's CMakeLists.txt already defines Shlwapi
-    add_library (gbenchmark ALIAS benchmark_main)
+        include (FetchContent)
+        FetchContent_Declare (
+            gbenchmark_fetch_content
+            GIT_REPOSITORY "https://github.com/google/benchmark.git"
+            GIT_TAG "${gbenchmark_git_tag}")
+        option (BENCHMARK_ENABLE_TESTING "" OFF)
+        option (BENCHMARK_ENABLE_WERROR "" OFF) # Does not apply to Debug builds.
+        option (BENCHMARK_ENABLE_INSTALL "" OFF)
+        FetchContent_MakeAvailable (gbenchmark_fetch_content)
+    else ()
+        message (STATUS "Found Google Benchmark ${benchmark_version}")
+    endif ()
 
+    # NOTE: google benchmark's CMakeLists.txt already defines Shlwapi
     if (NOT TARGET gbenchmark_build)
-        add_custom_target (gbenchmark_build DEPENDS gbenchmark)
-        target_compile_options ("benchmark_main" PUBLIC "-w")
+        add_custom_target (gbenchmark_build DEPENDS benchmark_main benchmark)
     endif ()
+
 endmacro ()

test/cmake/sharg_require_test.cmake

@@ -8,24 +8,32 @@
 cmake_minimum_required (VERSION 3.16)
 
 # Exposes the google-test targets `gtest` and `gtest_main`.
+# CMake 3.24: https://cmake.org/cmake/help/latest/module/FetchContent.html#variable:FETCHCONTENT_TRY_FIND_PACKAGE_MODE
 macro (sharg_require_test)
     enable_testing ()
 
-    set (gtest_git_tag "release-1.12.1")
+    set (gtest_version "1.12.1")
+    set (gtest_git_tag "release-${gtest_version}")
 
-    message (STATUS "Fetch Google Test:")
+    find_package (GTest ${gtest_version} EXACT QUIET)
 
-    include (FetchContent)
-    FetchContent_Declare (
-        gtest_fetch_content
-        GIT_REPOSITORY "https://github.com/google/googletest.git"
-        GIT_TAG "${gtest_git_tag}")
-    option (BUILD_GMOCK "" OFF)
-    FetchContent_MakeAvailable (gtest_fetch_content)
+    if (NOT GTest_FOUND)
+        message (STATUS "Fetching Google Test ${gtest_version}")
+
+        include (FetchContent)
+        FetchContent_Declare (
+            gtest_fetch_content
+            GIT_REPOSITORY "https://github.com/google/googletest.git"
+            GIT_TAG "${gtest_git_tag}")
+        option (BUILD_GMOCK "" OFF)
+        option (INSTALL_GTEST "" OFF)
+        FetchContent_MakeAvailable (gtest_fetch_content)
+    else ()
+        message (STATUS "Found Google Test ${gtest_version}")
+    endif ()
 
     if (NOT TARGET gtest_build)
         add_custom_target (gtest_build DEPENDS gtest_main gtest)
-        target_compile_options ("gtest_main" PUBLIC "-w")
-        target_compile_options ("gtest" PUBLIC "-w")
     endif ()
+
 endmacro ()

test/sharg-test.cmake

@@ -58,7 +58,7 @@ endif ()
 # needed for performance test cases in sharg/test/performance
 if (NOT TARGET sharg::test::performance)
     add_library (sharg_test_performance INTERFACE)
-    target_link_libraries (sharg_test_performance INTERFACE "sharg::test" "gbenchmark")
+    target_link_libraries (sharg_test_performance INTERFACE "sharg::test" "benchmark_main" "benchmark")
 
     add_library (sharg::test::performance ALIAS sharg_test_performance)
 endif ()

test/snippet/readme_sneak_peek.cpp

@@ -10,13 +10,16 @@ int main(int argc, char ** argv)
     parser.add_subsection("Eating Numbers");
     parser.add_option(val, sharg::config{.short_id = 'i', .long_id = "int", .description = "Desc."});
     parser.parse();
+
+    return 0;
 }
 
 #undef main
 
-int main(int argc, char ** argv)
+int main()
 {
-    char * test_argv[] = {"./Eat-Me-App", "-h"};
-    int const test_argc = sizeof(test_argv) / sizeof(*test_argv);
-    return test(test_argc, test_argv);
+    std::string argv1{"./Eat-Me-App"}, argv2{"-h"};
+    std::array argv{argv1.data(), argv2.data()};
+
+    return test(argv.size(), argv.data());
 }