FindOrBuildGTest.cmake

# MIT License
#
# Copyright (c) 2017-2023 The ViaDuck Project
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set(GTEST_SRC_DIR "" CACHE PATH "Path to GTest source")

if (GTEST_SRC_DIR)
    if (NOT TARGET gtest)
        message(STATUS "Path to GTest source specified; adding to project")

        # add subdirectory so that gtest is built automatically
        add_subdirectory(${GTEST_SRC_DIR} ${CMAKE_CURRENT_BINARY_DIR}/gtest)
    endif()

    set(GTEST_FOUND TRUE)
    set(GTEST_TARGET gtest_main)
else()
    if (NOT GTEST_FOUND)
        find_package(GTest)

        if (GTEST_FOUND)
            message(STATUS "Found system GTest")
        else()
            message(STATUS "System GTest not found; disabling tests")
        endif()
    endif()

    set(GTEST_TARGET GTest::Main GTest::gtest_main)
endif()