Fix json-c dependency in shady

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

.gitmodules

@@ -79,3 +79,6 @@
 [submodule "modules/shader_compiler/lib/murmur3"]
 	path = modules/shader_compiler/lib/murmur3
 	url = https://github.com/PeterScott/murmur3.git
+[submodule "modules/shader_compiler/lib/json-c"]
+	path = modules/shader_compiler/lib/json-c
+	url = https://github.com/json-c/json-c.git

modules/shader_compiler/CMakeLists.txt

@@ -42,7 +42,8 @@ set_target_properties(vkcv_shader_compiler PROPERTIES PUBLIC_HEADER "${vkcv_shad
 set(vkcv_shader_compiler_lib lib)
 set(vkcv_shader_compiler_lib_path ${PROJECT_SOURCE_DIR}/${vkcv_shader_compiler_lib})
 
-# Load SPIRV-Headers
+# Load JSON-C and SPIRV-Headers
+include(config/JSON-C.cmake)
 include(config/SPIRV-Headers.cmake)
 
 # Check and load GLSLANG

modules/shader_compiler/config/JSON-C.cmake

+
+use_git_submodule("${vkcv_shader_compiler_lib_path}/json-c" json_c_status)
+
+if (${json_c_status})
+	add_subdirectory(${vkcv_shader_compiler_lib}/json-c)
+	
+	list(APPEND vkcv_shader_compiler_libraries json-c)
+	list(APPEND vkcv_shader_compiler_includes ${vkcv_shader_compiler_lib})
+endif ()

modules/shader_compiler/config/Shady.cmake

@@ -2,6 +2,7 @@
 use_git_submodule("${vkcv_shader_compiler_lib_path}/shady" shady_status)
 
 if (${shady_status})
+	set(EXTERNAL_JSON_C ON CACHE INTERNAL "")
     set(EXTERNAL_SPIRV_HEADERS ON CACHE INTERNAL "")
     set(EXTERNAL_MURMUR3 ON CACHE INTERNAL "")
 

json-c @ dabed805

+Subproject commit dabed80523fa5101e30f0ee57ba06b02beae73eb

shady @ defbe9e8

-Subproject commit 0a92cf7ff4081d21db0724a8e66ab868b878df7d
+Subproject commit defbe9e83bc4d3a5f1a5ecf5ec10db449442761a