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feat: CMAKE_CXX_STD should be given by the enduser

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ToruNiina 2022-10-24 22:42:31 +09:00
parent b02aaed4fc
commit 4c4e82866e
1 changed files with 3 additions and 1 deletions
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4
CMakeLists.txt
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@ -15,7 +15,9 @@ include(CheckCXXCompilerFlag)
if("${CMAKE_VERSION}" VERSION_GREATER 3.1)
set(CMAKE_CXX_EXTENSIONS OFF CACHE BOOL "Boolean specifying whether compiler specific extensions are requested.")
if(NOT DEFINED CMAKE_CXX_STANDARD)
set(CMAKE_CXX_STANDARD 11 CACHE STRING "The C++ standard whose features are requested to build all targets.")
message(FATAL_ERROR "CMAKE_CXX_STANDARD is not defined. \
The C++ standard whose features are requested to *build* all targets. \
Remember that toml11 is a header only library that does NOT require compilation to use.")
endif()
set(CMAKE_CXX_STANDARD_REQUIRED ON CACHE BOOL "Boolean describing whether the value of CXX_STANDARD is a requirement.")
else()