I tried to do -DCMAKE_CXX_STANDARD=17 but I still get 14 - Why? (trying to regenerate and rebuild after git pull)

[DragonOsman]

I ran this command:

cmake .. -DCMAKE_INSTALL_PREFIX=../install -DCMAKE_BUILD_TYPE=Release -DJINJA2CPP_DEPS_MODE=external-boost -DJINJA2PP_MSVC_RUNTIME_TYPE=/MT -DCMAKE_CXX_STANDARD=17 -G "Visual Studio 16 2019" -A x64

When trying to generate project files again after running git pull. But I got this message:

-- Selecting Windows SDK version 10.0.18362.0 to target Windows 10.0.18363.
-- The C compiler identification is MSVC 19.25.28612.0
-- The CXX compiler identification is MSVC 19.25.28612.0
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.25.28610/bin/Hostx64/x64/cl.exe
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.25.28610/bin/Hostx64/x64/cl.exe - works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.25.28610/bin/Hostx64/x64/cl.exe
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.25.28610/bin/Hostx64/x64/cl.exe - works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Jinja2Cpp C++ standard: 14
-- Selected MSVC runtime type for Jinja2C++ library: '/MT'
-- Jinja2C++ library type: STATIC
-- Selected Jinja2C++ thirdparty libraries runtime type: '/MT'
-- 'extnernal-boost' dependencies mode selected for Jinja2Cpp. All dependencies are used as submodules except of boost
-- Found Git: C:/Program Files/Git/cmd/git.exe (found version "2.26.2.windows.1")
-- Project 'expected_lite', package 'expected-lite' version: '0.3.0'
-- Project 'variant_lite', package 'variant-lite' version: '1.2.2'
-- Project 'optional_lite', package 'optional-lite' version: '3.2.0'
-- Project 'string_view_lite', package 'string-view-lite' version: '1.3.0'
-- Version: 6.1.2
-- Build type: Release
-- CXX_STANDARD: 14
CMake Warning (dev) at thirdparty/json/rapid/CMakeLists.txt:12 (PROJECT):
  Policy CMP0048 is not set: project() command manages VERSION variables.
  Run "cmake --help-policy CMP0048" for policy details.  Use the cmake_policy
  command to set the policy and suppress this warning.

  The following variable(s) would be set to empty:

    PROJECT_VERSION
    PROJECT_VERSION_MAJOR
    PROJECT_VERSION_MINOR
    PROJECT_VERSION_PATCH
This warning is for project developers.  Use -Wno-dev to suppress it.

-- RapidJSON found. Headers: C:/Jinja2Cpp/thirdparty/json/rapid/include
-- Using the multi-header code from C:/Jinja2Cpp/thirdparty/json/nlohmann/include/
CMake Warning (dev) at C:/Program Files/CMake/share/cmake-3.17/Modules/FindPackageHandleStandardArgs.cmake:272 (message):
  The package name passed to `find_package_handle_standard_args` (GTest) does
  not match the name of the calling package (gtest).  This can lead to
  problems in calling code that expects `find_package` result variables
  (e.g., `_FOUND`) to follow a certain pattern.
Call Stack (most recent call first):
  C:/Program Files/CMake/share/cmake-3.17/Modules/FindGTest.cmake:205 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  thirdparty/CMakeLists.txt:47 (find_package)
  CMakeLists.txt:172 (include)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Could NOT find GTest (missing: GTEST_LIBRARY GTEST_INCLUDE_DIR GTEST_MAIN_LIBRARY)
-- gtest not found, using submodule
-- Found PythonInterp: C:/Users/Osman/AppData/Local/Programs/Python/Python38/python.exe (found version "3.8.2")
-- infix: EXPECTED-LITE target: expected-lite
-- infix: VARIANT-LITE target: variant-lite
-- infix: OPTIONAL-LITE target: optional-lite
-- infix: STRING-VIEW-LITE target: string-view-lite
-- Configuring done
-- Generating done
CMake Warning:
  Manually-specified variables were not used by the project:

    JINJA2PP_MSVC_RUNTIME_TYPE


-- Build files have been written to: C:/Jinja2Cpp/build

It's using C++14 even though I did specify C++17. And if it did take my command for using /MT and instead of '/MD'`, why is it saying that that variable wasn't used? What happened there?

Also, is there a way to specify what version of Boost I want it to use? I built and installed Boost version 1.73.0 just yesterday, but I forgot to rid of the 1.72 installation first. Is that going to cause a problem?