Disable building DXC if SDLSHADERCROSS_DXC is set to OFF and SDLSHADE…

…RCROSS_VENDORED is set to ON

CMakeLists.txt

@@ -112,6 +112,8 @@ if(SDLSHADERCROSS_VENDORED)
 	if(MINGW)
 		set(CMAKE_C_COMPILER_ARCHITECTURE_ID "${SDL_CPU_NAMES}")
 	endif()
+
+	if(SDLSHADERCROSS_DXC)
 	set(DXC_COVERAGE OFF)
 	set(HLSL_INCLUDE_TESTS OFF)
 	set(LLVM_INCLUDE_TESTS OFF)
@@ -121,6 +123,7 @@ if(SDLSHADERCROSS_VENDORED)
 	add_library(DirectXShaderCompiler::dxil ALIAS dxildll)
 	list(APPEND vendored_targets dxcompiler dxildll)
 	add_dependencies(dxcompiler dxildll)
+	endif()
 
 	export(TARGETS ${vendored_targets} NAMESPACE "SDL3_shadercross::" FILE "SDL3_shadercross-vendored-targets.cmake")
 else()