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mdbx-cmake: allow to define CMAKE_CXX_STANDARD by the environment variable.

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This commit is contained in:
Leonid Yuriev 2021-11-07 02:15:03 +03:00
parent 7179823d56
commit 630ef98951
1 changed files with 3 additions and 0 deletions
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3
CMakeLists.txt
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@ -335,6 +335,9 @@ list(FIND CMAKE_CXX_COMPILE_FEATURES cxx_std_14 HAS_CXX14)
list(FIND CMAKE_CXX_COMPILE_FEATURES cxx_std_17 HAS_CXX17) list(FIND CMAKE_CXX_COMPILE_FEATURES cxx_std_17 HAS_CXX17)
list(FIND CMAKE_CXX_COMPILE_FEATURES cxx_std_20 HAS_CXX20) list(FIND CMAKE_CXX_COMPILE_FEATURES cxx_std_20 HAS_CXX20)
if(NOT DEFINED MDBX_CXX_STANDARD) if(NOT DEFINED MDBX_CXX_STANDARD)
if(DEFINED ENV{CMAKE_CXX_STANDARD})
set(CMAKE_CXX_STANDARD $ENV{CMAKE_CXX_STANDARD})
endif()
if(DEFINED CMAKE_CXX_STANDARD) if(DEFINED CMAKE_CXX_STANDARD)
set(MDBX_CXX_STANDARD ${CMAKE_CXX_STANDARD}) set(MDBX_CXX_STANDARD ${CMAKE_CXX_STANDARD})
elseif(NOT HAS_CXX20 LESS 0 elseif(NOT HAS_CXX20 LESS 0