allow the user to override the lua path

diff --git a/lua/CMakeLists.txt b/lua/CMakeLists.txt
index 69079c9df3e998ca978210dacac3e3f334ad1094..ad773a48bf25231c9f1309c88f85c6f76d6a9c29 100644 (file)
--- a/lua/CMakeLists.txt
+++ b/lua/CMakeLists.txt
@@ -10,15 +10,17 @@ IF(APPLE)
        SET(CMAKE_SHARED_MODULE_CREATE_C_FLAGS "${CMAKE_SHARED_MODULE_CREATE_C_FLAGS} -undefined dynamic_lookup")
 ENDIF(APPLE)
 
-EXECUTE_PROCESS(
-       COMMAND  lua -e "for k in string.gmatch(package.cpath .. \";\", \"([^;]+)/..so;\") do if k:sub(1,1) == \"/\" then print(k) break end end"
-       OUTPUT_VARIABLE LUAPATH
-       RESULT_VARIABLE LUA_CHECK_RES
-       OUTPUT_STRIP_TRAILING_WHITESPACE
-)
-
-IF(NOT ${LUA_CHECK_RES} EQUAL 0 OR ${LUAPATH} EQUAL "")
-       MESSAGE(SEND_ERROR "Lua was not found on your system")
+IF(NOT LUAPATH)
+       EXECUTE_PROCESS(
+               COMMAND  lua -e "for k in string.gmatch(package.cpath .. \";\", \"([^;]+)/..so;\") do if k:sub(1,1) == \"/\" then print(k) break end end"
+               OUTPUT_VARIABLE LUAPATH
+               RESULT_VARIABLE LUA_CHECK_RES
+               OUTPUT_STRIP_TRAILING_WHITESPACE
+       )
+
+       IF(NOT ${LUA_CHECK_RES} EQUAL 0 OR ${LUAPATH} EQUAL "")
+               MESSAGE(SEND_ERROR "Lua was not found on your system")
+       ENDIF()
 ENDIF()
 
 ADD_LIBRARY(uci_lua MODULE uci.c)