Replace dl linking with cmake-based variable

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

CMakeLists.txt

@@ -487,14 +487,10 @@ check_function_exists( madvise HAVE_MADVISE )
 check_function_exists( getgroups HAVE_GETGROUPS )
 check_symbol_exists( posix_fadvise "fcntl.h" HAVE_FADVISE )
 check_function_exists( getcwd HAVE_GETCWD )
+tde_save_and_set( CMAKE_REQUIRED_LIBRARIES ${CMAKE_DL_LIBS} )
+check_function_exists( dlopen HAVE_LIBDL
 check_function_exists( dlerror HAVE_DLERROR )
-if( NOT HAVE_DLERROR )
-  check_library_exists( dl dlerror "" HAVE_DLERROR_LIB )
-  if( HAVE_DLERROR_LIB )
-    set( HAVE_DLERROR 1 )
-    set( DLERROR_LIBRARIES dl )
-  endif( HAVE_DLERROR_LIB )
-endif( NOT HAVE_DLERROR )
+tde_restore( CMAKE_REQUIRED_LIBRARIES )
 check_function_exists( crypt HAVE_CRYPT )
 if( NOT HAVE_CRYPT )
   check_library_exists( crypt crypt "" HAVE_CRYPT_LIB )
@@ -652,20 +648,6 @@ if( WITH_TDEHWLIB )
 endif( WITH_TDEHWLIB )
 
 
-##### check for libdl ###########################
-
-set( DL_LIBRARIES dl )
-check_library_exists( ${DL_LIBRARIES} dlopen /lib HAVE_LIBDL )
-if( NOT HAVE_LIBDL )
-  unset( DL_LIBRARIES )
-  check_function_exists( dlopen HAVE_DLOPEN )
-  if( HAVE_DLOPEN )
-    set( HAVE_LIBDL 1 )
-  endif( HAVE_DLOPEN )
-endif( NOT HAVE_LIBDL )
-check_library_exists( dld, dld_link "" HAVE_DLD )
-
-
 ##### check for magic ###########################
 
 set( MAGIC_LIBRARIES magic )

tdeprint/cups/CMakeLists.txt

@@ -82,7 +82,7 @@ set( ${target}_SRCS
 
 tde_add_executable( ${target}
   SOURCES ${${target}_SRCS}
-  LINK driverparse-static tdefakes-shared ${ZLIB_LIBRARIES} ${DL_LIBRARIES} ${TQT_LIBRARIES}
+  LINK driverparse-static tdefakes-shared ${ZLIB_LIBRARIES} ${CMAKE_DL_LIBS} ${TQT_LIBRARIES}
   DESTINATION ${BIN_INSTALL_DIR}
 )
 

tdeprint/lpr/CMakeLists.txt

@@ -80,6 +80,6 @@ set( ${target}_SRCS
 
 tde_add_executable( ${target}
   SOURCES ${${target}_SRCS}
-  LINK driverparse-static tdefakes-shared ${DL_LIBRARIES}
+  LINK driverparse-static tdefakes-shared ${CMAKE_DL_LIBS}
   DESTINATION ${BIN_INSTALL_DIR}
 )

tdestyles/kthemestyle/CMakeLists.txt

@@ -36,6 +36,6 @@ set( ${target}_SRCS
 
 tde_add_kpart( ${target} AUTOMOC
   SOURCES ${${target}_SRCS}
-  LINK tdefx-shared tdecore-shared ${DL_LIBRARIES}
+  LINK tdefx-shared tdecore-shared ${CMAKE_DL_LIBS}
   DESTINATION ${PLUGIN_INSTALL_DIR}/plugins/styles
 )