Change: CMake, allow the developer to select if Dynamic or Static lib…

…raries are built

CMakeLists.txt

@@ -21,7 +21,18 @@ if (NOT MSVC)
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2 -std=c99 -pedantic -Wall")
 endif ()
 
+# https://cmake.org/Wiki/BuildingWinDLL
+# Allow the developer to select if Dynamic or Static libraries are built, default is static.
+OPTION (BUILD_SHARED_LIBS "Build Shared Libraries" OFF)
+# Set the LIB_TYPE variable to STATIC
+SET (LIB_TYPE STATIC)
+IF (BUILD_SHARED_LIBS)
+  # User wants to build Dynamic Libraries, so change the LIB_TYPE variable to CMake keyword 'SHARED'
+  SET (LIB_TYPE SHARED)
+ENDIF (BUILD_SHARED_LIBS)
+
 add_library (utf8proc
+  ${LIB_TYPE}
   utf8proc.c
   utf8proc.h
 )