Add cmake export.

src/CMakeLists.txt

@@ -221,6 +221,8 @@ IF(USE_QUADPROG)
  PKG_CONFIG_USE_DEPENDENCY(${PROJECT_NAME} eigen-quadprog)
 ENDIF(USE_QUADPROG)
 
-INSTALL(TARGETS ${PROJECT_NAME} DESTINATION ${CMAKE_INSTALL_PREFIX}/lib)
+INSTALL(TARGETS ${PROJECT_NAME}
+  EXPORT ${TARGETS_EXPORT_NAME}
+  DESTINATION ${CMAKE_INSTALL_PREFIX}/lib)
 SET_TARGET_PROPERTIES(${PROJECT_NAME} PROPERTIES SOVERSION ${PROJECT_VERSION})