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cmake_minimum_required(VERSION 3.12)
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function(run_glslangValidator exe exe_display)
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execute_process(COMMAND ${exe} --help
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OUTPUT_VARIABLE output
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OUTPUT_STRIP_TRAILING_WHITESPACE
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RESULT_VARIABLE result
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)
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if(NOT result EQUAL 1)
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message(SEND_ERROR "Result of ${exe_display} --help is ${result}, should be 1")
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endif()
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# NOTE: Newer version prefer just "glslang" since it's no longer really just a validator.
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# This approach is still compatible with older version that output glslangValidator
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if(NOT output MATCHES "^Usage: glslang")
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message(SEND_ERROR "Output of ${exe_display} --help is \"${output}\", should begin with \"Usage: glslang\"")
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endif()
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endfunction()
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run_glslangValidator("${VULKAN_GLSLANG_VALIDATOR_EXECUTABLE}" "\${VULKAN_GLSLANG_VALIDATOR_EXECUTABLE}")
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run_glslangValidator("${VULKAN_GLSLANG_VALIDATOR_EXECUTABLE_TARGET}" "Vulkan::glslangValidator")
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