diff --git a/CMakeLists.txt b/CMakeLists.txt
index 857b9ad4..52c97bea 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,6 +28,7 @@ include( CheckIncludeFile )
 include( CheckIncludeFileCXX )
 include( CheckCXXSourceCompiles )
 include( CheckLibraryExists )
+include( CheckStructHasMember )
 
 
 ##### include our cmake modules #################
diff --git a/config.h.cmake b/config.h.cmake
index 9e0cfbad..d8c1211e 100644
--- a/config.h.cmake
+++ b/config.h.cmake
@@ -16,6 +16,7 @@
 #cmakedefine SUPPORT_JINGLE 1
 #cmakedefine HAVE_GLIB 1
 #cmakedefine HAVE_SPEEX 1
+#cmakedefine HAVE_TM_GMTOFF 1
 
 // kopete/plugins/nowlistening
 #cmakedefine HAVE_XMMS 1
@@ -25,7 +26,11 @@
 #cmakedefine HAVE_NET_IF_PPP_H 1
 
 // krcd / krfb
+#cmakedefine HAVE_GETNAMEINFO 1
+#cmakedefine HAVE_GETIFADDRS 1
 #cmakedefine HAVE_SLP 1
+#cmakedefine HAVE_STRUCT_SOCKADDR_SA_LEN 1
+#cmakedefine HAVE_SYS_SOCKIO_H 1
 
 // ktalkd
 #cmakedefine HAVE_SYS_TYPES_H 1
@@ -33,12 +38,14 @@
 #cmakedefine HAVE_SYS_FILE_H 1
 #cmakedefine HAVE_UNISTD_H 1
 #cmakedefine HAVE_UTMP_H 1
+#cmakedefine HAVE_UTMPX_H 1
 #cmakedefine HAVE_VSNPRINTF 1
-#define SCANDIR_NEEDS_CONST 1
+#cmakedefine SCANDIR_NEEDS_CONST 1
+
 // only for Linux
-#define PROC_FIND_USER 1
-#define UTMP_AND_PROC_FIND_USER 1
-#define ALL_PROCESSES_AND_PROC_FIND_USER 1
+#cmakedefine PROC_FIND_USER 1
+#cmakedefine UTMP_AND_PROC_FIND_USER 1
+#cmakedefine ALL_PROCESSES_AND_PROC_FIND_USER 1
 
 // wifi
 #cmakedefine WITHOUT_ARTS 1
diff --git a/kopete/ConfigureChecks.cmake b/kopete/ConfigureChecks.cmake
index b6ec6758..ef0a250f 100644
--- a/kopete/ConfigureChecks.cmake
+++ b/kopete/ConfigureChecks.cmake
@@ -33,3 +33,6 @@ if ( HAVE_LINUX_VIDEODEV_H )
 endif ( )
 # -- End linux-videodev.h ----------------------------------------------
 
+### Check for tm_gmtoff in tm struct
+check_struct_has_member( "struct tm" tm_gmtoff time.h HAVE_TM_GMTOFF )
+
diff --git a/krfb/ConfigureChecks.cmake b/krfb/ConfigureChecks.cmake
index 2de58a4d..4a760e97 100644
--- a/krfb/ConfigureChecks.cmake
+++ b/krfb/ConfigureChecks.cmake
@@ -16,3 +16,14 @@ pkg_search_module( XTST xtst )
 if( NOT XTST_FOUND )
   tde_message_fatal( "xtst is required, but was not found on your system" )
 endif( )
+
+check_function_exists( getnameinfo HAVE_GETNAMEINFO )
+check_function_exists( getifaddrs HAVE_GETIFADDRS )
+check_include_file( sys/sockio.h HAVE_SYS_SOCKIO_H )
+
+check_struct_has_member(
+ "struct sockaddr" sa_len
+ "sys/types.h;sys/socket.h;netinet/in.h"
+ HAVE_STRUCT_SOCKADDR_SA_LEN
+)
+
diff --git a/ktalkd/ConfigureChecks.cmake b/ktalkd/ConfigureChecks.cmake
index 8238322f..923854b0 100644
--- a/ktalkd/ConfigureChecks.cmake
+++ b/ktalkd/ConfigureChecks.cmake
@@ -14,5 +14,23 @@ check_include_file( sys/stat.h HAVE_SYS_STAT_H )
 check_include_file( sys/file.h HAVE_SYS_FILE_H )
 check_include_file( unistd.h HAVE_UNISTD_H )
 check_include_file( utmp.h HAVE_UTMP_H )
+check_include_file( utmpx.h HAVE_UTMPX_H )
 
 check_function_exists( vsnprintf HAVE_VSNPRINTF )
+
+if( ${CMAKE_SYSTEM_NAME} STREQUAL "Linux" )
+  set( PROC_FIND_USER 1 CACHE INTERNAL "" FORCE )
+  set( UTMP_AND_PROC_FIND_USER 1 CACHE INTERNAL "" FORCE )
+  set( ALL_PROCESSES_AND_PROC_FIND_USER 1 CACHE INTERNAL "" FORCE )
+endif( )
+
+check_c_source_compiles("
+  #include <dirent.h>
+  int select_process(const struct dirent *d) { return 0; }
+
+  int main(int argc, char *argv[]) {
+    struct dirent **namelist;
+    (void) scandir(\"/proc\", &namelist, select_process, 0 /*no sort*/);
+  }"
+  SCANDIR_NEEDS_CONST
+)