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0032921: Configuration, CMake - allow selecting C++ standard.

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Make C++ standard to be enable from cmake settings:

User will be able choosing C++ language standard by selecting cmake variable BUILD_CPP_STANDARD.
For correct working, CMAKE_CXX_STANDARD cmake built-in variable should be available.
To enable CMAKE_CXX_STANDARD, minimum CMAKE version has been updated to 3.1.

Available next standard items:
C++11
C++14
C++17
C++20
C++23

This issue consists from several steps to achive main goal:
1) Configuratiuon, CMake - allow selecting C++ standard.
2) Require minimum CMAKE version 3.1 (for enabling CMAKE_CXX_STANDARD).
3) More flexible CMAKE_CXX_COMPILER_ID identification (fixups previous commit!)
4) Add description of new CMAKE variable `BUILD_CPP_STANDARD` into documentation.
5) Update CMAKE requirements in documentation.
6) Set C++11 standard for several projects.
This commit is contained in:
ddzama
2022-05-04 12:57:51 +03:00
committed by smoskvin
parent b71cb85f67
commit e92d322d40
28 changed files with 143 additions and 50 deletions
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dox/introduction/introduction.md
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@@ -359,7 +359,7 @@ https://dev.opencascade.org/resources/download/3rd-party-components
| Component | Where to find | Used for | Purpose |
| --------- | ------------- | -------- | -------------------- |
| CMake 2.8+ | https://cmake.org/ | Configuration | Build from sources |
| CMake 3.1+ | https://cmake.org/ | Configuration | Build from sources |
| Intel TBB 4.x or later | https://oneapi-src.github.io/oneTBB/ | All | Parallelization of algorithms (alternative to built-in thread pool) |
| OpenGL 3.3+, OpenGL ES 2.0+ | System | Visualization | Required for using 3D Viewer |
| OpenVR 1.10+ | https://github.com/ValveSoftware/openvr | Visualization | VR (Virtual Reality) support in 3D Viewer |