OSX上的GLFW + Vulkan

Question

我正在为我的一个项目设置GLFW和Vulkan。 对于Vulkan，我正在使用MoltenVk来获取Vulkan compat和GLFW以进行窗口创建。 我正在使用的IDE是CLion，它使用CMake系统。

从某些github问题来看，似乎对这种设置有支持，但是没有人提及它是如何完成的。

通过将MoltenVK和vulkan文件夹添加到usr / local / include并将MacOS文件夹的内容添加到usr / local / lib，可以通过homebrew和MoltenVK手动安装GLFW（尽管我非常确定MoltenVK.framework应该不存在）。

此时，Clion可以看到GLFW和Vulkan标头，但是我仍然需要正确地链接它们。

现在，完整的CMakeLists.txt文件是这样的：

cmake_minimum_required(VERSION 3.8)
project(VulkanEngine)

#set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} “${CMAKE_SOURCE_DIR}/cmake/Modules”)

set(CMAKE_CXX_STANDARD 17)

set(SOURCE_FILES src/main.cpp)
add_executable(VulkanEngine ${SOURCE_FILES})

#Finding and linking GLFW3

find_package(glfw3 3.2 REQUIRED)
if (glfw3_FOUND)
    include_directories(${glfw3_INCLUDE_DIRS})
    target_link_libraries (VulkanEngine ${glfw3_LIBRARIES})
endif (glfw3_FOUND)

#Finding and linking Vulkan

find_package (Vulkan)
if (Vulkan_FOUND)
    include_directories(${Vulkan_INCLUDE_DIRS})
    target_link_libraries (VulkanEngine ${Vulkan_LIBRARIES})
endif (Vulkan_FOUND)

当cmake项目已重新加载时，控制台会告诉以下内容：

-- Could NOT find Vulkan (missing:  Vulkan_LIBRARY) 
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/mtesseract/dev/cpp/VulkanEngine/cmake-build-debug

对我来说，这表明已找到并链接了GLFW，但是当我尝试为GLFW构建“ hello world”时，收到以下消息：

Undefined symbols for architecture x86_64:
  "_glfwInit", referenced from:
      _main in main.cpp.o

我从GLFW github页面https://git.io/v5ggN获得了FindVulkan.cmake，因为它支持MoltenVK，但我不确定CMake是否会完全使用它。 （我将文件放在（projectroot）/ cmake / modules /中）

在这一点上，我对为什么事物无法正确链接的想法一无所知，因此请多多帮助。

Answer 1

我找到了至少在某种程度上似乎可行的解决方案。 在这一点上，我要解决另一个问题（GLFW似乎并没有考虑到MoltenVK的存在）。

到目前为止的过程如下（可以在我的github页面（github.com/mtesseracttech/VulkanEngine）上找到）：

Vulkan + GLFW + GLM Setup Process with CMake and Package Managers

Windows:

Preparation:
Create CLion Application Project 
Install MSYS2 (Cygwin-like package manager that includes a windows port of Arch's PacMan)
Install LunarG VK SDK
Download FindVulkan.cmake from GFLW's Github (it includes a path for MoltenVK(for OSX Later)) and put it in (proj_root/cmake/modules)

MSYS2 Commands:

$ pacman -Su //Updates pacman
$ pacman -Ss {packageName} //Is used for searching for exact package names

Installed Packages through msys2:

$ pacman -S mingw-w64-x86_64-toolchain //Installs the CLion toolchain that includes CMake, Make, GCC, etc.
$ pacman -S mingw-w64-x86_64-glfw //Installs GLFW
$ pacman -S mingw-w64-x86_64-glm //Installs GLM
$ pacman -S mingw-w64-x86_64-vulkan //Vulkan can also be installed through this method, but I went with LunarG

Enter the following in the CMakeLists.txt file in the root of the project:

######################################################################################

cmake_minimum_required(VERSION 3.8)
project(VulkanEngine)

set(CMAKE_CXX_STANDARD 17)

set(SOURCE_FILES src/main.cpp)
add_executable(VulkanEngine ${SOURCE_FILES})

#Setting up PkgConfig

find_package(PkgConfig REQUIRED)

#Finding and linking GLFW3

pkg_search_module(GLFW3 3.2 REQUIRED glfw3)
if(GLFW3_FOUND)
    message(STATUS "Found GLFW, Including and Linking now")
    include_directories(${GLFW3_INCLUDE_DIRS})
    target_link_libraries(VulkanEngine ${GLFW3_STATIC_LIBRARIES})
endif(GLFW3_FOUND)

set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/modules/")

#Finding and linking Vulkan

find_package (Vulkan)
if (VULKAN_FOUND)
    message(STATUS "Found Vulkan, Including and Linking now")
    include_directories(${VULKAN_INCLUDE_DIR})
    target_link_libraries (VulkanEngine ${VULKAN_LIBRARY})
endif (VULKAN_FOUND)

######################################################################################




OSX:

Preparation

Create CLion Application Project 
Install HomeBrew (package manager)
Download MoltenVK
Download FindVulkan.cmake from GFLW's Github (it includes a path for MoltenVK(for OSX Later)) and put it in (proj_root/cmake/modules)

Homebrew:
brew update //Updates homebrew
brew install glfw //Installs GLFW
brew install glm //Installs GLM

MoltenVK:
Place MoltenVK/macOS's contents into /usr/local/lib
Place MoltenVK/macOS/MoltenVK.framework/headers's contents into /usr/local/inc/MoltenVK

CMake: 
Same as on windows, but in the FindVulkan.cmake file, add at the very end of the elseif(APPLE) block the line:
set(VULKAN_INCLUDE_DIR "/usr/local/include/MoltenVK")
This is not a pretty or flexible solution, but for now it will do.

我很确定这个解决方案不是理想的，因为GLFW不会采用这种策略来支持MoltenVK，但是至少可以编译，所以我认为这是进步。

Answer 2

似乎您的问题是您尚未定义VULKAN_SDK变量。 确保将其指向SDK内的/ lib和/ include的父文件夹，并且FindVulkan应该可以工作

VULKAN_SDK=/opt/vulkan/x86_64 cmake.