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Download googlebenchmark if not found #1709

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Oct 17, 2020
Merged

Download googlebenchmark if not found #1709

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19 changes: 18 additions & 1 deletion bench/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,24 @@ if(NOT TARGET spdlog)
endif()

find_package(Threads REQUIRED)
find_package(benchmark CONFIG REQUIRED)
find_package(benchmark CONFIG)
if (NOT benchmark_FOUND)
message(STATUS "Using CMake Version ${CMAKE_VERSION}")
if (${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.11.0")
# User can fetch googlebenchmark
message(STATUS "Downloading GoogleBenchmark")
include(FetchContent)
set(BENCHMARK_ENABLE_GTEST_TESTS OFF CACHE INTERNAL "")
# Do not build and run googlebenchmark tests
FetchContent_Declare(googlebenchmark
GIT_REPOSITORY https://github.com/google/benchmark.git
GIT_TAG v1.5.2)

FetchContent_MakeAvailable(googlebenchmark)
else()
message(FATAL_ERROR "GoogleBenchmark is missing. Use CMake >= 3.11 or download it")
endif()
endif()

add_executable(bench bench.cpp)
spdlog_enable_warnings(bench)
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