45 lines
1.7 KiB
CMake
45 lines
1.7 KiB
CMake
# ~~~
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# Copyright (c) 2022 LunarG, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ~~~
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# Written as a function to minimize variable scope
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# Only VK_VERSION_STRING will be returned to the PARENT_SCOPE
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function(vlk_get_header_version)
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set(vulkan_core_header_file "${CMAKE_CURRENT_SOURCE_DIR}/include/vulkan/vulkan_core.h")
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if (NOT EXISTS ${vulkan_core_header_file})
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message(FATAL_ERROR "Couldn't find vulkan_core.h!")
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endif()
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file(READ ${vulkan_core_header_file} ver)
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# Get the major/minor version
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if (ver MATCHES "#define[ ]+VK_HEADER_VERSION_COMPLETE[ ]+VK_MAKE_API_VERSION\\([ ]*[0-9]+,[ ]*([0-9]+),[ ]*([0-9]+),[ ]*VK_HEADER_VERSION[ ]*\\)")
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set(VK_VERSION_MAJOR "${CMAKE_MATCH_1}")
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set(VK_VERSION_MINOR "${CMAKE_MATCH_2}")
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else()
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message(FATAL_ERROR "Couldn't get major/minor version")
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endif()
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# Get the patch version
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if (ver MATCHES "#define[ ]+VK_HEADER_VERSION[ ]+([0-9]+)")
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set(VK_HEADER_VERSION "${CMAKE_MATCH_1}")
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else()
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message(FATAL_ERROR "Couldn't get the patch version")
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endif()
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set(VK_VERSION_STRING "${VK_VERSION_MAJOR}.${VK_VERSION_MINOR}.${VK_HEADER_VERSION}" PARENT_SCOPE)
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endfunction()
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vlk_get_header_version()
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