[CMake] howto include libs ?

[Reinhard Thies]

Hi,

its my first projekt with cmake and  I am getting crazy with the following:
I am using libconfuse, which is installed under /usr/lib/

Here is my cmakefile: 

cmake_minimum_required(VERSION 2.6)
PROJECT (DS309 C)
ADD_EXECUTABLE(ds309 ds309.c ds309_3_parser.c ds309toccp.c serveritf.c 
serial2itf.c conf_parse.c linked_list.c logging.c dbgitf.c debug.c ccp/ccp.c 
ccp/crcccitt.c)
INCLUDE_DIRECTORIES( . ccp )
TARGET_LINK_LIBRARIES(libconfuse)
IF (NOT CMAKE_BUILD_TYPE)
  #MESSAGE(STATUS "DBG setting CMAKE_BUILD_TYPE (once) because it does not 
exits.")
  SET(CMAKE_BUILD_TYPE "Debug" CACHE STRING  "build type determining compiler 
flags" FORCE )
#ELSE (NOT CMAKE_BUILD_TYPE)
#  IF (CMAKE_BUILD_TYPE MATCHES "")
#    MESSAGE("DBG setting CMAKE_BUILD_TYPE once beacuse it is empty. 
CMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}")
#    SET(CMAKE_BUILD_TYPE "Debug" CACHE STRING  "build type determining 
compiler flags" FORCE )
#  ENDIF (CMAKE_BUILD_TYPE MATCHES "")
ENDIF (NOT CMAKE_BUILD_TYPE)

and here the error I get

Linking C executable ds309
CMakeFiles/ds309.dir/conf_parse.c.o: In function `read_config':
/home/can/ds309/src/conf_parse.c:39: undefined reference to `cfg_free'
/home/can/ds309/src/conf_parse.c:41: undefined reference to `cfg_init'
/home/can/ds309/src/conf_parse.c:42: undefined reference to `cfg_parse'
collect2: ld returned 1 exit status

Do I have to use something diffrent then TARGET_LINK_LIBRARIES ?

Thanks for your help
Reinhard