Build fix for fuchsia

Change-Id: Ifdcd7e4d3966b9fb958fa7fb7654a465b4ced6ba
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0f0d5ea..cc97b9c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -34,6 +34,8 @@
   add_definitions(-DSPIRV_MAC)
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Android")
   add_definitions(-DSPIRV_ANDROID)
+elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Fuchsia")
+  add_definitions(-DSPIRV_FUCHSIA)
 else()
   message(FATAL_ERROR "Your platform '${CMAKE_SYSTEM_NAME}' is not supported!")
 endif()