diff --git a/AUTHORS.txt b/AUTHORS.txt
index 9033f39e8..9d3124cc2 100644
--- a/AUTHORS.txt
+++ b/AUTHORS.txt
@@ -5,6 +5,7 @@ Project initiator:
 Developement contributors, in last name alphabetical order:
 
 	Oliver Duis
+	Michael Ezra
 	Jean-Christophe Frisch
 	Steve Herrell
 	Emil Martinec
@@ -21,8 +22,7 @@ Other contributors (ideas, mockups, testing, forum activity, translations, etc.)
 	Patrik Brunner
 	Fernando Carello
 	Maciek Dworak
-	Michael Ezra
-	David M. Gyurko
+	M. Dávid Gyurkó
 	Arturs Jekabsons
 	Karl Loncarek
 	Paul Matthijsse
diff --git a/About-Apple.cmake b/About-Apple.cmake
index c9c379c16..85a489aa3 100644
--- a/About-Apple.cmake
+++ b/About-Apple.cmake
@@ -7,11 +7,15 @@ set (OUT_FILE "${CMAKE_CURRENT_SOURCE_DIR}/AboutThisBuild.txt")
 set (VERSION_FILE "${CMAKE_CURRENT_SOURCE_DIR}/rtgui/version.h")
 set (SHELL "/bin/bash")
 
+# if AboutThisBuild.txt has to be deleted, i guess that it's also the case for version.txt...
 add_custom_target (AboutFile ALL
+	COMMAND rm -f ${OUT_FILE}
+	COMMAND rm -f ${VERSION_FILE}
 	COMMAND for i in \$\( hg branch \)\; do echo Branch: $i >${OUT_FILE}\; done
 	COMMAND hg parents --template=\"Version: {latesttag}_{latesttagdistance}\\nChangset: {node}\\n\" >>${OUT_FILE}
 	COMMAND for i in \$\( gcc -dumpversion \) \;do echo Compiler: GCC $i >>${OUT_FILE} \; done
 	COMMAND echo Processor: ${PROC_LABEL} >>${OUT_FILE}
+	COMMAND echo Bit depth: ${PROC_BIT_DEPTH} >>${OUT_FILE}
 	COMMAND echo Gtkmm: V${GTKMM_VERSION} >>${OUT_FILE}
 	COMMAND echo Build flags: ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${UPPER_CMAKE_BUILD_TYPE}} >>${OUT_FILE}
 	COMMAND echo Link flags: ${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_EXE_LINKER_FLAGS_${UPPER_CMAKE_BUILD_TYPE}}  >>${OUT_FILE}
diff --git a/About-Linux.cmake b/About-Linux.cmake
index c9c379c16..85a489aa3 100644
--- a/About-Linux.cmake
+++ b/About-Linux.cmake
@@ -7,11 +7,15 @@ set (OUT_FILE "${CMAKE_CURRENT_SOURCE_DIR}/AboutThisBuild.txt")
 set (VERSION_FILE "${CMAKE_CURRENT_SOURCE_DIR}/rtgui/version.h")
 set (SHELL "/bin/bash")
 
+# if AboutThisBuild.txt has to be deleted, i guess that it's also the case for version.txt...
 add_custom_target (AboutFile ALL
+	COMMAND rm -f ${OUT_FILE}
+	COMMAND rm -f ${VERSION_FILE}
 	COMMAND for i in \$\( hg branch \)\; do echo Branch: $i >${OUT_FILE}\; done
 	COMMAND hg parents --template=\"Version: {latesttag}_{latesttagdistance}\\nChangset: {node}\\n\" >>${OUT_FILE}
 	COMMAND for i in \$\( gcc -dumpversion \) \;do echo Compiler: GCC $i >>${OUT_FILE} \; done
 	COMMAND echo Processor: ${PROC_LABEL} >>${OUT_FILE}
+	COMMAND echo Bit depth: ${PROC_BIT_DEPTH} >>${OUT_FILE}
 	COMMAND echo Gtkmm: V${GTKMM_VERSION} >>${OUT_FILE}
 	COMMAND echo Build flags: ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${UPPER_CMAKE_BUILD_TYPE}} >>${OUT_FILE}
 	COMMAND echo Link flags: ${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_EXE_LINKER_FLAGS_${UPPER_CMAKE_BUILD_TYPE}}  >>${OUT_FILE}
diff --git a/About-Windows.cmake b/About-Windows.cmake
index 6b75dfcb7..b3a572192 100644
--- a/About-Windows.cmake
+++ b/About-Windows.cmake
@@ -11,6 +11,7 @@ add_custom_target (AboutFile ALL
 	COMMAND hg parents --template=\"Version: {latesttag}_{latesttagdistance}\\nChangset: {node}\\n\" >>${OUT_FILE}
 	COMMAND for /F \"tokens=*\" %%i in \('gcc -dumpversion'\) do echo Compiler: GCC%%i >>${OUT_FILE}
 	COMMAND \(echo Processor: ${PROC_LABEL}\) >>${OUT_FILE}
+	COMMAND \(echo Bit depth: ${PROC_BIT_DEPTH}\) >>${OUT_FILE}
 	COMMAND \(echo Gtkmm: V${GTKMM_VERSION}\) >>${OUT_FILE}
 	COMMAND \(echo Build flags: ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${UPPER_CMAKE_BUILD_TYPE}} \) >>${OUT_FILE}
 	COMMAND \(echo Link flags: ${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_EXE_LINKER_FLAGS_${UPPER_CMAKE_BUILD_TYPE}} \) >>${OUT_FILE}
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a677a6692..2f18493df 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -133,6 +133,13 @@ else (WIN32)
     find_package (ZLIB REQUIRED)
 endif (WIN32)
 
+# set the bit number information of the platform
+if (CMAKE_SIZEOF_VOID_P EQUAL 4)
+    set(PROC_BIT_DEPTH 32 bits)
+elseif (CMAKE_SIZEOF_VOID_P EQUAL 8)
+    set(PROC_BIT_DEPTH 64 bits)
+endif (CMAKE_SIZEOF_VOID_P EQUAL 4)
+
 #generating AboutThisBuild.txt
 if (WIN32)
     include (About-Windows.cmake)