Add CMake build system

Add CMake build system for libraries, tests and samples
update_files.py converts build/files into CMake format.
build/update-setup-h has been modified to update build/cmake/setup.h.in.

build/cmake/toolkit.cmake

@@ -0,0 +1,97 @@
+#############################################################################
+# Name:        build/cmake/toolkit.cmake
+# Purpose:     CMake platform toolkit options
+# Author:      Tobias Taschner
+# Created:     2016-10-03
+# Copyright:   (c) 2016 wxWidgets development team
+# Licence:     wxWindows licence
+#############################################################################
+
+# Options required for toolkit selection/detection
+wx_option(wxUSE_GUI "Use GUI" ON)
+
+if(CMAKE_OSX_SYSROOT MATCHES iphoneos)
+    set(IPHONE ON)
+endif()
+
+if(WIN32)
+    set(wxDEFAULT_TOOLKIT msw)
+    set(wxTOOLKIT_OPTIONS msw gtk2 gtk3 qt)
+    set(wxPLATFORM WIN32)
+elseif(APPLE AND IPHONE)
+    set(wxDEFAULT_TOOLKIT osx_iphone)
+    set(wxTOOLKIT_OPTIONS osx_iphone)
+    set(wxPLATFORM OSX)
+elseif(APPLE)
+    set(wxDEFAULT_TOOLKIT osx_cocoa)
+    set(wxTOOLKIT_OPTIONS osx_cocoa gtk2 gtk3 qt)
+    set(wxPLATFORM OSX)
+elseif(UNIX)
+    set(wxDEFAULT_TOOLKIT gtk2)
+    set(wxTOOLKIT_OPTIONS gtk2 gtk3 motif qt)
+    set(wxPLATFORM UNIX)
+else()
+    message(FATAL_ERROR "Unsupported platform")
+endif()
+
+wx_option(wxBUILD_TOOLKIT "Toolkit used by wxWidgets" ${wxDEFAULT_TOOLKIT}
+    STRINGS ${wxTOOLKIT_OPTIONS})
+# TODO: set to univ for universal build
+set(wxBUILD_WIDGETSET "")
+
+if(NOT wxUSE_GUI)
+    set(wxBUILD_TOOLKIT "base")
+endif()
+
+# Create shortcut variable for easy toolkit tests
+string(TOUPPER ${wxBUILD_TOOLKIT} toolkit_upper)
+set(WX${toolkit_upper} ON)
+if(wxBUILD_TOOLKIT MATCHES "^gtk*")
+    set(WXGTK ON)
+elseif(wxBUILD_TOOLKIT MATCHES "^osx*")
+    set(WXOSX ON)
+endif()
+
+set(wxTOOLKIT_DEFINITIONS __WX${toolkit_upper}__)
+
+# Initialize toolkit variables
+if(wxUSE_GUI)
+set(wxTOOLKIT_INCLUDE_DIRS)
+set(wxTOOLKIT_LIBRARIES)
+set(wxTOOLKIT_VERSION)
+
+if(UNIX AND NOT APPLE AND NOT WIN32)
+    find_package(X11 REQUIRED)
+    list(APPEND wxTOOLKIT_INCLUDE_DIRS ${X11_INCLUDE_DIR})
+    list(APPEND wxTOOLKIT_LIBRARIES ${X11_LIBRARIES})
+endif()
+
+if(WXMSW)
+    set(wxTOOLKIT_LIBRARIES
+        gdi32
+        comdlg32
+        winspool
+        shell32
+        comctl32
+        rpcrt4
+        Oleacc
+        )
+elseif(WXGTK)
+    if(WXGTK3)
+        set(gtk_lib GTK3)
+    elseif(WXGTK2)
+        set(gtk_lib GTK2)
+    endif()
+
+    find_package(${gtk_lib} REQUIRED)
+    list(APPEND wxTOOLKIT_INCLUDE_DIRS ${${gtk_lib}_INCLUDE_DIRS})
+    list(APPEND wxTOOLKIT_LIBRARIES ${${gtk_lib}_LIBRARIES})
+    list(APPEND wxTOOLKIT_DEFINITIONS ${${gtk_lib}_DEFINITIONS})
+    list(APPEND wxTOOLKIT_DEFINITIONS __WXGTK__)
+    set(wxTOOLKIT_VERSION ${${gtk_lib}_VERSION})
+endif()
+
+if(APPLE)
+    list(APPEND wxTOOLKIT_DEFINITIONS __WXMAC__ __WXOSX__)
+endif()
+endif() # wxUSE_GUI