make sure variables are initialized before use

Jan Willamowius

2019-04-21 374a60fa001de3e41c7e3d0782b4c2361479f316

 src/tools/base_lib/CMakeLists.txt

@@ -17,3 +17,5 @@
     tools_base
     ${EXTERNAL_LIBS}
)

install(TARGETS tools_base ARCHIVE DESTINATION lib)