Index: apbs/apbs/src/CMakeLists.txt
===================================================================
--- apbs.orig/apbs/src/CMakeLists.txt	2020-06-18 13:19:20.948669947 +0800
+++ apbs/apbs/src/CMakeLists.txt	2020-06-18 13:19:20.944669968 +0800
@@ -53,6 +53,8 @@
 
 add_items(SOURCES routines.c)
 add_sublibrary(routines)
+# provide link path to internal symbols used in routines
+target_link_libraries(apbs_routines apbs_generic apbs_mg)
 
 message(STATUS "External Headers: ${EXTERNAL_HEADERS}")