shaderc building changes

subprojects/packagefiles/shaderc/meson.build

@@ -0,0 +1,27 @@
+project('libshaderc', 'cpp')
+
+python = find_program('python3')
+run_command(python, './utils/git-sync-deps', check: true)
+
+cmake  = import('cmake')
+opts = cmake.subproject_options()
+opts.add_cmake_defines({
+    'CMAKE_MSVC_RUNTIME_LIBRARY': 'MultiThreaded',
+    'CMAKE_POLICY_DEFAULT_CMP0091': 'NEW',
+    'SHADERC_SKIP_INSTALL': 'ON',
+    'SHADERC_SKIP_TESTS': 'ON',
+    'SHADERC_SKIP_EXAMPLES': 'ON',
+    'SHADERC_SKIP_COPYRIGHT_CHECK': 'ON'
+})
+shaderc_proj = cmake.subproject('shaderc_cmake', options: opts)
+shaderc_dep = declare_dependency(dependencies: [
+    shaderc_proj.dependency('shaderc'),
+    shaderc_proj.dependency('shaderc_util'),
+    shaderc_proj.dependency('SPIRV'),
+    shaderc_proj.dependency('SPIRV-Tools-static'),
+    shaderc_proj.dependency('SPIRV-Tools-opt'),
+    shaderc_proj.dependency('glslang'),
+    shaderc_proj.dependency('GenericCodeGen'),
+    shaderc_proj.dependency('MachineIndependent'),
+])
+meson.override_dependency('shaderc', shaderc_dep)