File seqan3-unbundle_gtest.patch of Package seqan3

--- seqan3.orig/test/seqan3-test.cmake
+++ seqan3/test/seqan3-test.cmake
@@ -34,13 +34,13 @@
 find_path (SEQAN3_TEST_CMAKE_MODULE_DIR NAMES seqan3_test_component.cmake HINTS "${CMAKE_CURRENT_LIST_DIR}/cmake/")
 list(APPEND CMAKE_MODULE_PATH "${SEQAN3_TEST_CMAKE_MODULE_DIR}")
 
-set (SEQAN3_BENCHMARK_CLONE_DIR "${PROJECT_BINARY_DIR}/vendor/benchmark")
-set (SEQAN3_TEST_CLONE_DIR "${PROJECT_BINARY_DIR}/vendor/googletest")
+set (SEQAN3_BENCHMARK_CLONE_DIR "${CMAKE_INSTALL_PREFIX}")
+set (SEQAN3_TEST_CLONE_DIR "${CMAKE_INSTALL_PREFIX}")
 
 # needed for add_library (seqan3::test::* INTERFACE IMPORTED)
 # see cmake bug https://gitlab.kitware.com/cmake/cmake/issues/15052
-file(MAKE_DIRECTORY ${SEQAN3_BENCHMARK_CLONE_DIR}/include/)
-file(MAKE_DIRECTORY ${SEQAN3_TEST_CLONE_DIR}/googletest/include/)
+file(MAKE_DIRECTORY ${SEQAN3_BENCHMARK_CLONE_DIR}/include/benchmark/)
+file(MAKE_DIRECTORY ${SEQAN3_TEST_CLONE_DIR}/include/gtest/)
 
 # ----------------------------------------------------------------------------
 # Interface targets for the different test modules in seqan3.
@@ -70,8 +70,8 @@
 # needed for unit test cases in seqan3/test/unit
 add_library (seqan3_test_unit INTERFACE)
 target_link_libraries (seqan3_test_unit INTERFACE "seqan3::test" "gtest_main" "gtest")
-target_include_directories (seqan3_test_unit INTERFACE "${SEQAN3_TEST_CLONE_DIR}/googletest/include/")
+target_include_directories (seqan3_test_unit INTERFACE "${SEQAN3_TEST_CLONE_DIR}/include/gtest/")
 add_library (seqan3::test::unit ALIAS seqan3_test_unit)
 
 # seqan3::test::coverage specifies required flags, includes and libraries
 # needed for coverage test cases in seqan3/test/coverage
--- a/test/cmake/seqan3_require_test.orig.cmake	2020-08-06 14:00:23.000000000 +0200
+++ b/test/cmake/seqan3_require_test.cmake	2020-08-06 14:35:10.167198023 +0200
@@ -5,72 +5,8 @@
 # shipped with this file and also available at: https://github.com/seqan/seqan3/blob/master/LICENSE.md
 # -----------------------------------------------------------------------------------------------------
 
-# Exposes the google-test targets `gtest` and `gtest_main`.
-macro (seqan3_require_test_old gtest_git_tag)
-    set (gtest_project_args ${SEQAN3_EXTERNAL_PROJECT_CMAKE_ARGS})
-    list (APPEND gtest_project_args "-DBUILD_GMOCK=0")
-
-    # force that libraries are installed to `lib/`, because GNUInstallDirs might install it into `lib64/`
-    list (APPEND gtest_project_args "-DCMAKE_INSTALL_LIBDIR=${PROJECT_BINARY_DIR}/lib/")
-
-    # google sets CMAKE_DEBUG_POSTFIX = "d"
-    set (gtest_main_path "${PROJECT_BINARY_DIR}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}gtest_main${CMAKE_STATIC_LIBRARY_SUFFIX}")
-    if (CMAKE_BUILD_TYPE STREQUAL "Debug")
-        set (gtest_main_path "${PROJECT_BINARY_DIR}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}gtest_maind${CMAKE_STATIC_LIBRARY_SUFFIX}")
-    endif ()
-
-    set (gtest_path "${PROJECT_BINARY_DIR}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}gtest${CMAKE_STATIC_LIBRARY_SUFFIX}")
-    if (CMAKE_BUILD_TYPE STREQUAL "Debug")
-        set (gtest_path "${PROJECT_BINARY_DIR}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}gtestd${CMAKE_STATIC_LIBRARY_SUFFIX}")
-    endif ()
-
-    include (ExternalProject)
-    ExternalProject_Add (
-        gtest_project
-        PREFIX gtest_project
-        GIT_REPOSITORY "https://github.com/google/googletest.git"
-        GIT_TAG "${gtest_git_tag}"
-        SOURCE_DIR "${SEQAN3_TEST_CLONE_DIR}"
-        CMAKE_ARGS "${gtest_project_args}"
-        BUILD_BYPRODUCTS "${gtest_main_path}" "${gtest_path}"
-        UPDATE_DISCONNECTED ${SEQAN3_TEST_BUILD_OFFLINE}
-    )
-    unset (gtest_project_args)
-
-    add_library (gtest_main STATIC IMPORTED)
-    add_dependencies (gtest_main gtest_project)
-    set_target_properties (gtest_main PROPERTIES IMPORTED_LOCATION "${gtest_main_path}")
-
-    add_library (gtest STATIC IMPORTED)
-    add_dependencies (gtest gtest_main)
-    set_target_properties (gtest PROPERTIES IMPORTED_LOCATION "${gtest_path}")
-    set_property (TARGET gtest APPEND PROPERTY INTERFACE_LINK_LIBRARIES "pthread")
-
-    unset(gtest_main_path)
-    unset(gtest_path)
-endmacro ()
-
 macro (seqan3_require_test)
     enable_testing ()
 
-    set (gtest_git_tag "252ce9c52d304659eff6be558209c811b7191963") # 26-04-2021
-
-    if (NOT CMAKE_VERSION VERSION_LESS 3.14)
-        message (STATUS "Fetch googletest:")
-
-        include (FetchContent)
-        FetchContent_Declare (
-            gtest_fetch_content
-            GIT_REPOSITORY "https://github.com/google/googletest.git"
-            GIT_TAG "${gtest_git_tag}"
-        )
-        option (BUILD_GMOCK "" OFF)
-        FetchContent_MakeAvailable(gtest_fetch_content)
-    else ()
-        message (STATUS "Use googletest as external project:")
-
-        seqan3_require_test_old ("${gtest_git_tag}")
-    endif ()
-
-    add_custom_target (gtest_build DEPENDS gtest_main gtest)
+    find_package(GTest REQUIRED)
 endmacro ()