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CMake: when compiler is too old, report found version

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To aid in debugging the case where your compiler is too old for Blender,
actually log which version CMake found.

Before, CMake would output:
```
CMake Error at CMakeLists.txt:121 (message):
  The minimum supported version of GCC is 11.0.0
```

With the patch, it logs:
```
CMake Error at CMakeLists.txt:121 (message):
  The minimum supported version of GCC is 11.0.0, found 10.4.0
```

This has been implemented for GCC and Clang. MSVC has been explicitly
excluded, as the version numbers used for this comparison are internal
versions and not directly usable/recognisable.

Reviewed By: LazyDodo, brecht

Differential Revision: https://developer.blender.org/D16849
This commit is contained in:
Sybren A. Stüvel 2023-01-05 11:34:11 +01:00
parent 200a114e15
commit 963600ddc0
1 changed files with 6 additions and 2 deletions
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8
CMakeLists.txt
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@ -118,14 +118,18 @@ enable_testing()
if(CMAKE_COMPILER_IS_GNUCC)
if("${CMAKE_C_COMPILER_VERSION}" VERSION_LESS "11.0.0")
message(FATAL_ERROR "The minimum supported version of GCC is 11.0.0")
message(FATAL_ERROR "The minimum supported version of GCC is 11.0.0, found ${CMAKE_C_COMPILER_VERSION}")
endif()
elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
if(CMAKE_COMPILER_IS_GNUCC AND ("${CMAKE_C_COMPILER_VERSION}" VERSION_LESS "8.0"))
message(FATAL_ERROR "The minimum supported version of CLANG is 8.0")
message(FATAL_ERROR "The minimum supported version of CLANG is 8.0, found ${CMAKE_C_COMPILER_VERSION}")
endif()
elseif(CMAKE_CXX_COMPILER_ID MATCHES MSVC)
if(MSVC_VERSION VERSION_LESS "1928")
# MSVC_VERSION is an internal version number, it doesn't map to something
# the end user would recognize as a version. Because of this, for MSVC we do
# not show the found number. When using our make.bat the actual VS version
# will be displayed on the console before starting the build, anyway.
message(FATAL_ERROR "The minimum supported version of MSVC is 2019 (16.9.16)")
endif()
endif()