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Add validate-backend-options.cmake script (#3828)

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Co-authored-by: Frank Elsinga <frank@elsinga.de>
This commit is contained in:
Bart Louwers
2025-09-26 15:48:02 +02:00
committed by GitHub
parent 95794f8520
commit 2ccb454345
3 changed files with 39 additions and 8 deletions
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28
cmake/validate-backend-options.cmake Normal file
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if (MLN_LEGACY_RENDERER)
message(FATAL "The legacy renderer is no longer supported")
endif()
if (MLN_DRAWABLE_RENDERER)
message(FATAL "Do not pass MLN_DRAWABLE_RENDERER, the drawable renderer is now the default")
endif()
set(backend_count 0)
if (MLN_WITH_OPENGL)
math(EXPR backend_count "${backend_count} + 1")
endif()
if (MLN_WITH_METAL)
math(EXPR backend_count "${backend_count} + 1")
endif()
if (MLN_WITH_VULKAN)
math(EXPR backend_count "${backend_count} + 1")
endif()
if (backend_count EQUAL 0)
message(FATAL_ERROR
"You need to set a rendering backend. "
"Set exactly one of: MLN_WITH_OPENGL, MLN_WITH_METAL, or MLN_WITH_VULKAN.")
elseif (backend_count GREATER 1)
message(FATAL_ERROR
"Multiple rendering backends selected. "
"Please enable only one of: MLN_WITH_OPENGL, MLN_WITH_METAL, or MLN_WITH_VULKAN.")
endif()