use unicode

CMakeLists.txt

@@ -14,6 +14,7 @@ set(LIBGLTF_PLATFORM_LINUX FALSE)
 set(LIBGLTF_PLATFORM_MACOS FALSE)
 
 option(LIBGLTF_COVERAGE_GCOV "Coverage gcov (debug, Linux builds only)" OFF)
+option(LIBGLTF_WITH_UNICODE "Build with UNICODE" OFF)
 
 if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
     set(LIBGLTF_PLATFORM_WINDOWS TRUE)
@@ -78,7 +79,7 @@ if((CMAKE_COMPILER_IS_GNUCC STREQUAL "1") OR (CMAKE_COMPILER_IS_GNUCXX STREQUAL
     add_definitions(-DCOMPILER_IS_GCC)
 endif()
 
-if(${LIBGLTF_PLATFORM_WINDOWS})
+if(${LIBGLTF_WITH_UNICODE} OR ${LIBGLTF_PLATFORM_WINDOWS})
     add_definitions(-DUNICODE -D_UNICODE)
 endif()