This should have been added before. add log spew if this ever happens. We should hopefully identify the various circumstances and make sure it is all cleaned up so the list becomes unnecessary.
# Find the Lua library
#
IF(WIN32)
SET(LUA_DEFAULT lua.dll)
ELSE(WIN32)
IF(APPLE)
SET(LUA_DEFAULT lua)
ELSE(APPLE)
#locate the system's lua library
FIND_LIBRARY(LUA_DEFAULT NAMES lua51 lua5.1 lua-5.1 lua PATHS /lib /usr/lib /usr/local/lib /usr/pkg/lib)
IF(${LUA_DEFAULT} MATCHES "LUA_DEFAULT-NOTFOUND")
#UNSET(LUA_DEFAULT)
MESSAGE(FATAL_ERROR "Couldn't find Lua 5.1 library!")
ENDIF()
#remove the path (fpc doesn't like it - why?)
GET_FILENAME_COMPONENT(LUA_DEFAULT ${LUA_DEFAULT} NAME)
ENDIF(APPLE)
ENDIF(WIN32)
SET(LUA_LIBRARY ${LUA_DEFAULT} CACHE STRING "Lua library to link to; file name without path only!")
#UNSET(LUA_DEFAULT)