Add search for utempter helper

This resolves Bug 2841

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit a14adb9ab9)

CMakeLists.txt

@@ -595,7 +595,26 @@ endif( HAVE_LIBMAGIC )
 if( WITH_UTEMPTER )
   check_include_file( utempter.h HAVE_UTEMPTER_H )
   check_library_exists( utempter addToUtmp "" HAVE_ADDTOUTEMP )
-  if( HAVE_UTEMPTER_H AND HAVE_ADDTOUTEMP )
+  if( NOT DEFINED UTEMPTER_HELPER )
+    message( STATUS "Looking for utempter helper" )
+    find_program( UTEMPTER_HELPER utempter
+      PATHS
+        /usr/lib/${CMAKE_LIBRARY_ARCHITECTURE}/utempter
+        /usr/lib/utempter
+        /usr/libexec/utempter
+        /usr/libexec
+        /usr/local/lib/${CMAKE_LIBRARY_ARCHITECTURE}/utempter
+        /usr/local/lib/utempter
+        /usr/local/libexec/utempter
+        /usr/local/libexec
+    )
+    if( UTEMPTER_HELPER )
+      message( STATUS "Looking for utempter helper - found" )
+    else( )
+      message( STATUS "Looking for utempter helper - not found" )
+    endif( )
+  endif( )
+  if( HAVE_UTEMPTER_H AND HAVE_ADDTOUTEMP AND UTEMPTER_HELPER )
     set( HAVE_UTEMPTER 1 )
     set( UTEMPTER_LIBRARY utempter )
   else( )

config.h.cmake

@@ -708,6 +708,7 @@
 
 /* Define if you have the utempter helper for utmp managment */
 #cmakedefine HAVE_UTEMPTER 1
+#cmakedefine UTEMPTER_HELPER "@UTEMPTER_HELPER@"
 
 /* Define to 1 if you have the <util.h> header file. */
 #cmakedefine HAVE_UTIL_H 1

tdecore/kpty.cpp

@@ -453,7 +453,7 @@ void KPty::login(const char *user, const char *remotehost)
 #ifdef HAVE_UTEMPTER
     TDEProcess_Utmp utmp;
     utmp.cmdFd = d->masterFd;
-    utmp << "/usr/lib/utempter/utempter" << "add";
+    utmp << UTEMPTER_HELPER << "add";
     if (remotehost)
       utmp << remotehost;
     utmp.start(TDEProcess::Block);
@@ -498,7 +498,7 @@ void KPty::logout()
 #ifdef HAVE_UTEMPTER
     TDEProcess_Utmp utmp;
     utmp.cmdFd = d->masterFd;
-    utmp << "/usr/lib/utempter/utempter" << "del";
+    utmp << UTEMPTER_HELPER << "del";
     utmp.start(TDEProcess::Block);
 #elif defined(USE_LOGIN)
     const char *str_ptr = d->ttyName.data();