mirror of
https://github.com/dpogue/CMake-MetalShaderSupport.git
synced 2025-04-04 13:05:06 +00:00
78 lines
2.7 KiB
CMake
78 lines
2.7 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file LICENCE.txt or https://cmake.org/licensing for details.
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# CMakeTest(LANG)Compiler.cmake -> test the compiler and set:
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# SET(CMAKE_(LANG)_COMPILER_WORKS 1 CACHE INTERNAL "")
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if(CMAKE_Metal_COMPILER_FORCED)
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# The compiler configuration was forced by the user.
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# Assume the user has configured all compiler information.
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set(CMAKE_Metal_COMPILER_WORKS TRUE)
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return()
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endif()
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include(CMakeTestCompilerCommon)
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if("${CMAKE_GENERATOR}" STREQUAL "Xcode")
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if(XCODE_VERSION VERSION_GREATER 7.0)
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set(CMAKE_Metal_COMPILER_WORKS 1)
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endif()
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endif()
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# This file is used by EnableLanguage in cmGlobalGenerator to
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# determine that that selected Metal compiler can actually compile
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# and link the most basic of programs. If not, a fatal error
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# is set and cmake stops processing commands and will not generate
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# any makefiles or projects.
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if(NOT CMAKE_Metal_COMPILER_WORKS)
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PrintTestCompilerStatus("Metal")
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__TestCompiler_setTryCompileTargetType()
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string(CONCAT __TestCompiler_testMetalCompilerSource
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"#ifndef __METAL_VERSION__\n"
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"# error \"The CMAKE_Metal_COMPILER is not a Metal compiler\"\n"
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"#endif\n"
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"#import <metal_stdlib>\n"
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"using namespace metal;\n"
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)
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# Clear result from normal variable.
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unset(CMAKE_Metal_COMPILER_WORKS)
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# Puts test result in cache variable.
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try_compile(CMAKE_Metal_COMPILER_WORKS
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SOURCE_FROM_VAR testMetalCompiler.metal __TestCompiler_testMetalCompilerSource
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OUTPUT_VARIABLE __CMAKE_Metal_COMPILER_OUTPUT
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)
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unset(__TestCompiler_testMetalCompilerSource)
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# Move result from cache to normal variable.
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set(CMAKE_Metal_COMPILER_WORKS ${CMAKE_Metal_COMPILER_WORKS})
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unset(CMAKE_Metal_COMPILER_WORKS CACHE)
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__TestCompiler_restoreTryCompileTargetType()
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set(METAL_TEST_WAS_RUN 1)
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endif()
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if(NOT CMAKE_Metal_COMPILER_WORKS)
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PrintTestCompilerResult(CHECK_FAIL "broken")
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string(REPLACE "\n" "\n " _output "${__CMAKE_Metal_COMPILER_OUTPUT}")
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message(FATAL_ERROR "The Metal compiler\n \"${CMAKE_Metal_COMPILER}\"\n"
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"is not able to compile a simple test program.\nIt fails "
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"with the following output:\n ${_output}\n\n"
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"CMake will not be able to correctly generate this project."
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)
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else()
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if(METAL_TEST_WAS_RUN)
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PrintTestCompilerResult(CHECK_PASS "works")
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endif()
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# Re-configure to save learned information.
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configure_file(
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${CMAKE_CURRENT_LIST_DIR}/CMakeMetalCompiler.cmake.in
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${CMAKE_PLATFORM_INFO_DIR}/CMakeMetalCompiler.cmake
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@ONLY
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)
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include(${CMAKE_PLATFORM_INFO_DIR}/CMakeMetalCompiler.cmake)
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endif()
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unset(__CMAKE_Metal_COMPILER_OUTPUT)
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