From 631b41f9a484814e7758f9771ec9af5b7ffd648a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sl=C3=A1vek=20Banko?= <slavek.banko@axis.cz>
Date: Sat, 26 Jan 2013 21:12:51 +0100
Subject: [PATCH] Add CMake option for backtrace in kdesktop_lock exception
 handler (cherry picked from commit 936d3cec490c13f2c5f7dd14f5e364fddaa6da71)

---
 CMakeLists.txt                 | 2 ++
 config.h.cmake                 | 1 +
 kdesktop/ConfigureChecks.cmake | 7 +++++++
 kdesktop/lock/CMakeLists.txt   | 9 +++++++--
 kdesktop/lock/lockprocess.cc   | 2 ++
 5 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 27ab130ee..2f16ddc8e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,6 +22,7 @@ set( VERSION "3.5.13" )
 
 include( FindPkgConfig )
 include( CheckIncludeFile )
+include( CheckIncludeFiles )
 include( CheckCSourceRuns )
 include( CheckCXXSourceCompiles )
 include( CheckLibraryExists )
@@ -79,6 +80,7 @@ option( WITH_XINERAMA "Enable xinerama extension support" OFF )
 option( WITH_ARTS "Enable aRts support" OFF )
 option( WITH_I8K "Enable Dell laptop support (ksysguard)" OFF )
 option( WITH_HAL "Enable HAL support" OFF )
+option( WITH_KDESKTOP_LOCK_BACKTRACE "Enable backtrace in kdesktop_lock exception handler"  OFF )
 
 
 ##### user requested modules ####################
diff --git a/config.h.cmake b/config.h.cmake
index ccfdf43ac..bbbb91628 100644
--- a/config.h.cmake
+++ b/config.h.cmake
@@ -110,6 +110,7 @@
 
 // kdesktop
 #cmakedefine KSCREENSAVER_PAM_SERVICE "@KSCREENSAVER_PAM_SERVICE@"
+#cmakedefine WITH_KDESKTOP_LOCK_BACKTRACE 1
 
 // kdm
 #cmakedefine XBINDIR "@XBINDIR@"
diff --git a/kdesktop/ConfigureChecks.cmake b/kdesktop/ConfigureChecks.cmake
index da78021ff..fe3f386e7 100644
--- a/kdesktop/ConfigureChecks.cmake
+++ b/kdesktop/ConfigureChecks.cmake
@@ -14,3 +14,10 @@
 if( WITH_PAM AND (NOT DEFINED KSCREENSAVER_PAM_SERVICE) )
   set( KSCREENSAVER_PAM_SERVICE "kde" CACHE INTERNAL "" )
 endif( )
+
+if( WITH_KDESKTOP_LOCK_BACKTRACE )
+  check_include_files( "bfd.h;demangle.h;libiberty.h" HAVE_BINUTILS_DEV )
+  if( NOT HAVE_BINUTILS_DEV )
+    tde_message_fatal( "binutils-dev are required, but not found on your system" )
+  endif( )
+endif( )
diff --git a/kdesktop/lock/CMakeLists.txt b/kdesktop/lock/CMakeLists.txt
index 9ae30e72c..467b3ebef 100644
--- a/kdesktop/lock/CMakeLists.txt
+++ b/kdesktop/lock/CMakeLists.txt
@@ -32,11 +32,16 @@ set( target kdesktop_lock )
 
 set( ${target}_SRCS
   lockprocess.cc lockdlg.cc infodlg.cc querydlg.cc sakdlg.cc
-  securedlg.cc autologout.cc main.cc backtrace_symbols.c
+  securedlg.cc autologout.cc main.cc
 )
 
+if( WITH_KDESKTOP_LOCK_BACKTRACE )
+  list( APPEND ${target}_SRCS backtrace_symbols.c )
+  set( BACKTRACE_LIBRARY bfd )
+endif( )
+
 tde_add_executable( ${target} AUTOMOC
   SOURCES ${${target}_SRCS}
-  LINK kdesktopsettings-static dmctl-static kio-shared Xext bfd ${GL_LIBRARY} "${LINKER_IMMEDIATE_BINDING_FLAGS}"
+  LINK kdesktopsettings-static dmctl-static kio-shared Xext ${BACKTRACE_LIBRARY} ${GL_LIBRARY} "${LINKER_IMMEDIATE_BINDING_FLAGS}"
   DESTINATION ${BIN_INSTALL_DIR}
 )
diff --git a/kdesktop/lock/lockprocess.cc b/kdesktop/lock/lockprocess.cc
index 3e08ef71c..da70102cf 100644
--- a/kdesktop/lock/lockprocess.cc
+++ b/kdesktop/lock/lockprocess.cc
@@ -137,6 +137,7 @@ static Atom   gXA_SCREENSAVER_VERSION;
 
 void print_trace()
 {
+#ifdef WITH_KDESKTOP_LOCK_BACKTRACE
 	void *array[10];
 	size_t size;
 	char **strings;
@@ -152,6 +153,7 @@ void print_trace()
 	}
 
 	free (strings);
+#endif
 }
 
 static void segv_handler(int)