Some changes

lib/CMakeLists.txt

@@ -0,0 +1,17 @@
+option(FORT_HAVE_WCHAR "Enable wchar support" ON)
+
+message("FORT_HAVE_WCHAR in fort = ${FORT_HAVE_WCHAR}")
+add_library(fort
+    fort.c)
+
+target_include_directories(fort
+    PUBLIC
+        ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+if(FORT_HAVE_WCHAR)
+    target_compile_definitions(fort
+        PRIVATE
+            -DFT_CONGIG_HAVE_WCHAR
+    )
+endif()