generic: make it possible to build from the source directory

after lots of build system changes (including this commit) it is
finally possible

Signed-off-by: Ivailo Monev <xakepa10@gmail.com>

CMakeLists.txt

@@ -365,12 +365,6 @@ configure_file(config-prefix.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config-prefix.h
 configure_file(config-pty.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config-pty.h)
 configure_file(kdemacros.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/kdemacros.h)
 
-################# Disallow in-source build #################
-
-if("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")
-    message(SEND_ERROR "kdelibs requires an out of source build")
-endif()
-
 #########################################################################
 
 add_definitions(${QT_DEFINITIONS} ${KDE4_DEFINITIONS})
@@ -485,12 +479,12 @@ add_subdirectory( solid )
 ################# write kdelibs package config files which will be installed #################
 
 configure_file(
-    KDELibs4Config.cmake
+    KDELibs4Config.cmake.in
     ${CMAKE_CURRENT_BINARY_DIR}/KDELibs4Config.cmake
     @ONLY
 )
 configure_file(
-    KDELibs4ConfigVersion.cmake
+    KDELibs4ConfigVersion.cmake.in
     ${CMAKE_CURRENT_BINARY_DIR}/KDELibs4ConfigVersion.cmake
     @ONLY
 )

cmake/modules/KDE4Macros.cmake

@@ -317,7 +317,7 @@ macro(KDE4_OPTIONAL_FIND_PACKAGE _PACKAGE)
 endmacro(KDE4_OPTIONAL_FIND_PACKAGE)
 
 # KDE4_TRANSLATE(<LANGUAGE> FILE1.po ... FILEN.po)
-#    This macro is will create and install translation files
+#    This macro will create and install translation files
 macro(KDE4_TRANSLATE _LANGUAGE)
     foreach(_pofile ${ARGN})
         get_filename_component(_abspofile "${_pofile}" ABSOLUTE)