add GeographicLib

cmake/3rdPartyTargets.cmake

@@ -21,6 +21,18 @@ ELSE ()
     MESSAGE(FATAL_ERROR "Unsupported compiler")
 ENDIF ()
 
+# define the import target of GeographicLib
+ADD_LIBRARY(GeographicLib STATIC IMPORTED)
+IF (MSVC)
+    SET_TARGET_PROPERTIES(GeographicLib PROPERTIES
+        IMPORTED_LOCATION_DEBUG "${CMAKE_SOURCE_DIR}/external/lib/Geographic_d.lib"
+        IMPORTED_LOCATION_RELEASE "${CMAKE_SOURCE_DIR}/external/lib/Geographic.lib"
+    )
+    TARGET_INCLUDE_DIRECTORIES(GeographicLib INTERFACE "${CMAKE_SOURCE_DIR}/external/include")
+ELSE ()
+    MESSAGE(FATAL_ERROR "Unsupported compiler")
+ENDIF ()
+
 # define the import target of libsodium
 ADD_LIBRARY(libsodium STATIC IMPORTED)
 IF (MSVC)