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https://github.com/nlohmann/json
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e8b6b7adc1
Commit 73cc5089 (Using target_compile_features to specify C++ 11
standard) bumped the required cmake version, from 3.0 to 3.8, so
as to get the definition of target_compile_features().
However, target_compile_features() was introduced in cmake-3.1:
https://cmake.org/cmake/help/v3.1/command/target_compile_features.html
And using cmake-3.1 is indeed sufficient to properly build.
As such, relax the minimum required version down to cmake-3.1,
so we can build on oldish, entreprise-grade distributions that
only have cmake-3.1 (or at least, don't have up to cmake-3.8).
Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
28 lines
1022 B
CMake
28 lines
1022 B
CMake
cmake_minimum_required(VERSION 3.1)
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project(JSON_Benchmarks LANGUAGES CXX)
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# set compiler flags
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if((CMAKE_CXX_COMPILER_ID MATCHES GNU) OR (CMAKE_CXX_COMPILER_ID MATCHES Clang))
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto -DNDEBUG -O3")
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endif()
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# configure Google Benchmarks
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set(BENCHMARK_ENABLE_TESTING OFF CACHE INTERNAL "" FORCE)
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add_subdirectory(thirdparty/benchmark)
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# header directories
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include_directories(thirdparty)
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include_directories(${CMAKE_SOURCE_DIR}/../single_include)
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# copy test files to build folder
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file(COPY ${CMAKE_SOURCE_DIR}/data DESTINATION .)
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file(COPY ${CMAKE_SOURCE_DIR}/../test/data/regression/floats.json
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${CMAKE_SOURCE_DIR}/../test/data/regression/unsigned_ints.json
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${CMAKE_SOURCE_DIR}/../test/data/regression/signed_ints.json
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DESTINATION data/numbers)
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# benchmark binary
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add_executable(json_benchmarks src/benchmarks.cpp)
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target_compile_features(json_benchmarks PRIVATE cxx_std_11)
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target_link_libraries(json_benchmarks benchmark ${CMAKE_THREAD_LIBS_INIT})
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