Export symbols on Windows and set PIC flag for Unix (#646)

Author: awvwgk

src/CMakeLists.txt

@@ -94,6 +94,13 @@ set(SRC
 
 add_library(${PROJECT_NAME} ${SRC})
 
+set_target_properties(
+  ${PROJECT_NAME}
+  PROPERTIES
+  POSITION_INDEPENDENT_CODE ON
+  WINDOWS_EXPORT_ALL_SYMBOLS ON
+)
+
 if(CMAKE_Fortran_COMPILER_ID STREQUAL GNU AND CMAKE_Fortran_COMPILER_VERSION VERSION_LESS 10.0)
   target_compile_options(
      ${PROJECT_NAME}