Fix FTBFS due to missing link dl library

Signed-off-by: François Andriot <francois.andriot@free.fr>

CMakeLists.txt

@@ -23,6 +23,8 @@ set( VERSION 0.6.0 )
 
 include( FindPkgConfig )
 include( CheckIncludeFile )
+include( CheckFunctionExists )
+include( CheckLibraryExists )
 
 
 ##### include our cmake modules #################
@@ -83,6 +85,15 @@ if( NOT LIBGLADE_FOUND )
     tde_message_fatal( "libglade-2.0 are required, but not found on your system" )
 endif( NOT LIBGLADE_FOUND )
 
+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 )
 
 set( EXTRA_LIBRARIES "-lm -lpthread" )
 if( UNIX )

src/CMakeLists.txt

@@ -40,7 +40,7 @@ tde_add_library(
   ${target} SHARED
   VERSION 0.0.0
   SOURCES ${${target}_SRCS}
-  LINK ${BACKEND_LIBRARIES} ${ZLIB_LIBRARIES} ${EXTRA_LIBRARIES}
+  LINK ${BACKEND_LIBRARIES} ${ZLIB_LIBRARIES} ${DL_LIBRARIES} ${EXTRA_LIBRARIES}
   DESTINATION ${LIB_INSTALL_DIR}
 )