> I think I found the problem. Where is APR_INCLUDE_DIR > set from > APR_INCLUDE_DIR_INT?? All I find is: > > EXEC_PROGRAM(${APR_CONFIG} ARGS "--includedir" > OUTPUT_VARIABLE > APR_INCLUDE_DIR_INT) > > which works to set APR_INCLUDE_DIR_INT, but I can't > find anywhere that there is a: > > SET(APR_INCLUDE_DIR ${APR_INCLUDE_DIR_INT}) I believe cmake generates the variable when the pkg config test is performed. cmake generates many internal variables. Darrell