From: Jan Engelhardt <jengelh@inai.de>
Date: 2019-04-13 15:02:22.799297208 +0200

Use Vulkan system libraries instead of bundled code.

---
 CMakeLists.txt                              |    3 ---
 src/CMakeLists.txt                          |    2 +-
 src/rendering/vulkan/shaders/vk_shader.cpp  |    2 +-
 src/rendering/vulkan/system/vk_builders.cpp |   22 +++++++++++-----------
 4 files changed, 13 insertions(+), 16 deletions(-)

Index: gzdoom-4.0.0/CMakeLists.txt
===================================================================
--- gzdoom-4.0.0.orig/CMakeLists.txt
+++ gzdoom-4.0.0/CMakeLists.txt
@@ -287,9 +287,6 @@ option(FORCE_INTERNAL_ASMJIT "Use intern
 mark_as_advanced( FORCE_INTERNAL_ASMJIT )
 
 if (HAVE_VULKAN)
-	add_subdirectory( glslang/glslang)
-	add_subdirectory( glslang/spirv )
-	add_subdirectory( glslang/OGLCompilersDLL )
 endif()
 
 # Fast math flags, required by some subprojects
Index: gzdoom-4.0.0/src/CMakeLists.txt
===================================================================
--- gzdoom-4.0.0.orig/src/CMakeLists.txt
+++ gzdoom-4.0.0/src/CMakeLists.txt
@@ -465,7 +465,7 @@ add_custom_target( revision_check ALL
 message( STATUS "Fluid synth libs: ${FLUIDSYNTH_LIBRARIES}" )
 set( ZDOOM_LIBS ${ZDOOM_LIBS} "${ZLIB_LIBRARIES}" "${JPEG_LIBRARIES}" "${BZIP2_LIBRARIES}" "${GME_LIBRARIES}" "${CMAKE_DL_LIBS}" )
 if (HAVE_VULKAN)
-	set( ZDOOM_LIBS ${ZDOOM_LIBS} "glslang" "SPIRV" "OGLCompiler")
+	set( ZDOOM_LIBS ${ZDOOM_LIBS} -lglslang -lSPIRV -lOGLCompiler)
 endif()
 include_directories( "${ZLIB_INCLUDE_DIR}" "${BZIP2_INCLUDE_DIR}" "${LZMA_INCLUDE_DIRS}" "${JPEG_INCLUDE_DIR}" "${GME_INCLUDE_DIR}" )
 
Index: gzdoom-4.0.0/src/rendering/vulkan/shaders/vk_shader.cpp
===================================================================
--- gzdoom-4.0.0.orig/src/rendering/vulkan/shaders/vk_shader.cpp
+++ gzdoom-4.0.0/src/rendering/vulkan/shaders/vk_shader.cpp
@@ -4,7 +4,7 @@
 #include "hwrenderer/utility/hw_shaderpatcher.h"
 #include "w_wad.h"
 #include "doomerrors.h"
-#include <ShaderLang.h>
+#include <glslang/Public/ShaderLang.h>
 
 VkShaderManager::VkShaderManager(VulkanDevice *device) : device(device)
 {
Index: gzdoom-4.0.0/src/rendering/vulkan/system/vk_builders.cpp
===================================================================
--- gzdoom-4.0.0.orig/src/rendering/vulkan/system/vk_builders.cpp
+++ gzdoom-4.0.0/src/rendering/vulkan/system/vk_builders.cpp
@@ -2,8 +2,8 @@
 #include "vk_builders.h"
 #include "doomerrors.h"
 #include "r_data/renderstyle.h"
-#include <ShaderLang.h>
-#include <GlslangToSpv.h>
+#include <glslang/Public/ShaderLang.h>
+#include <SPIRV/GlslangToSpv.h>
 
 static const TBuiltInResource DefaultTBuiltInResource = {
 	/* .MaxLights = */ 32,