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102 lines
3.8 KiB
102 lines
3.8 KiB
#.rst: |
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# Find Vulkan |
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# ----------- |
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# |
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# Finds the Vulkan library. This module defines: |
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# |
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# Vulkan_FOUND - True if Vulkan library is found |
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# Vulkan::Vulkan - Vulkan imported target |
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# |
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# Additionally these variables are defined for internal usage: |
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# |
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# Vulkan_LIBRARY - Vulkan library |
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# |
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# Please note this find module is tailored especially for the needs of Magnum. |
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# In particular, it doesn't look for Vulkan includes as Magnum has its own, |
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# generated using flextGL. |
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# |
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# |
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# This file is part of Magnum. |
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# |
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# Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, |
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# 2020, 2021, 2022, 2023 Vladimír Vondruš <mosra@centrum.cz> |
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# |
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# Permission is hereby granted, free of charge, to any person obtaining a |
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# copy of this software and associated documentation files (the "Software"), |
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# to deal in the Software without restriction, including without limitation |
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# the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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# and/or sell copies of the Software, and to permit persons to whom the |
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# Software is furnished to do so, subject to the following conditions: |
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# |
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# The above copyright notice and this permission notice shall be included |
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# in all copies or substantial portions of the Software. |
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# |
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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# DEALINGS IN THE SOFTWARE. |
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# |
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# LunarG SDK on Windows. Same as in CMake's vanilla FindVulkan.cmake in 3.18. |
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if(WIN32) |
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if(CMAKE_SIZEOF_VOID_P EQUAL 8) |
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find_library(Vulkan_LIBRARY |
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NAMES vulkan-1 |
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HINTS |
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"$ENV{VULKAN_SDK}/Lib" |
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"$ENV{VULKAN_SDK}/Bin" |
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) |
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elseif(CMAKE_SIZEOF_VOID_P EQUAL 4) |
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find_library(Vulkan_LIBRARY |
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NAMES vulkan-1 |
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HINTS |
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"$ENV{VULKAN_SDK}/Lib32" |
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"$ENV{VULKAN_SDK}/Bin32") |
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endif() |
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endif() |
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# Other distributions / systems |
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find_library(Vulkan_LIBRARY |
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NAMES |
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# Linux |
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vulkan |
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# MSYS packages have libvulkan.dll |
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libvulkan |
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# MoltenVK (installed by Homebrew). Specified after (lib)vulkan because |
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# the official loader is preferred, however MoltenVK alone works as |
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# well: https://www.lunarg.com/benefits-of-the-vulkan-macos-sdk/ |
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MoltenVK |
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PATHS |
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"$ENV{VULKAN_SDK}/lib") |
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include(FindPackageHandleStandardArgs) |
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find_package_handle_standard_args(Vulkan DEFAULT_MSG Vulkan_LIBRARY) |
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# libvulkan.so *should* link against pthread on its own, but in some rare |
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# corner cases (like the 1.2.203 ArchLinux package) it doesn't -- most probably |
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# due to the vulkan loader wrongly using `-lpthread` instead of `-pthread` and |
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# then the linker DCEing out the reference to it based on some unfortunate |
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# combination of compiler/linker flags? |
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# |
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# In that case using drivers that rely on pthread (such as SwiftShader) would |
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# lead to a nasty std::system_error telling me to link to pthreads. As I can't |
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# have control over how the loader links to pthread or whether at all, and what |
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# random packaging issues happened in various distributions, I have to link to |
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# it explicitly to be immune against such issues. |
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set(THREADS_PREFER_PTHREAD_FLAG TRUE) |
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find_package(Threads REQUIRED) |
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if(NOT TARGET Vulkan::Vulkan) |
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add_library(Vulkan::Vulkan UNKNOWN IMPORTED) |
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set_target_properties(Vulkan::Vulkan PROPERTIES |
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IMPORTED_LOCATION ${Vulkan_LIBRARY} |
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INTERFACE_LINK_LIBRARIES Threads::Threads) |
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endif() |
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mark_as_advanced(Vulkan_LIBRARY)
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