]> git.lyx.org Git - lyx.git/blobdiff - CMakeLists.txt
Do not for copies in range-based for loops.
[lyx.git] / CMakeLists.txt
index 790dfdaeaf3e963506c2b8f866a50bac61d106d0..2a123e7c34974938be7eca1d424f1db0e54dc681 100644 (file)
@@ -4,7 +4,7 @@
 # Copyright (c) 2006-2011 Peter Kümmel, <syntheticpp@gmx.net>
 # Copyright (c) 2008-2011 Kornel Benko, <Kornel.Benko@berlin.de>
 
-cmake_minimum_required(VERSION 2.6.4)
+cmake_minimum_required(VERSION 3.1.0)
 
 set(LYX_PROJECT LyX)
 
@@ -48,6 +48,9 @@ if(COMMAND cmake_policy)
                cmake_policy(SET CMP0043 NEW)
        endif()
        cmake_policy(SET CMP0020 NEW)
+       if(POLICY CMP0075)
+               cmake_policy(SET CMP0075 NEW)
+       endif()
 endif()
 
 set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
@@ -136,23 +139,30 @@ LYX_OPTION(BUNDLE           "Build bundle  (experimental) " OFF ALL)
 LYX_OPTION(ENABLE_URLTESTS  "Enable for URL tests" OFF ALL)
 LYX_OPTION(ENABLE_EXPORT_TESTS "Enable for export tests" OFF ALL)
 LYX_OPTION(ENABLE_KEYTESTS  "Enable for keytests" OFF ALL)
+if (NOT CMAKE_VERSION VERSION_LESS "3.17")
+LYX_OPTION(ENABLE_VALGRIND_TESTS  "Enable for tests involving valgrind" OFF ALL)
+else()
+unset(LYX_ENABLE_VALGRIND_TESTS CACHE)
+endif()
 LYX_OPTION(ASAN             "Use address sanitizer" OFF ALL)
-LYX_COMBO(USE_FILEDIALOG    "Use native or QT file dialog" QT NATIVE)
+#LYX_COMBO(USE_FILEDIALOG    "Use native or QT file dialog" QT NATIVE)
 LYX_COMBO(USE_QT            "Use Qt version as frontend" AUTO QT4 QT5)
+LYX_COMBO(USE_IPO           "Interprocedural optimization" OFF AUTO ON)
 #LYX_OPTION(3RDPARTY_BUILD   "Build 3rdparty libs" OFF ALL)
+LYX_OPTION(DISABLE_CALLSTACK_PRINTING "do not print a callstack when crashing" OFF ALL)
 LYX_OPTION(EXTERNAL_Z       "OFF := Build 3rdparty lib zlib" ON ALL)
+LYX_OPTION(EXTERNAL_DTL     "OFF := Build 3rdparty commands dt2dv and dv2dt" ON ALL)
 LYX_OPTION(EXTERNAL_ICONV   "OFF := Build 3rdparty lib iconvlib" ON ALL)
 LYX_OPTION(EXTERNAL_HUNSPELL "OFF := Build 3rdparty lib hunspelllib" ON ALL)
 LYX_COMBO(EXTERNAL_MYTHES   "OFF := Build 3rdparty lib mytheslib" AUTO OFF ON)
 
 # GCC specific
-LYX_OPTION(PROFILE              "Build profile version" OFF GCC)
+LYX_OPTION(PROFILE              "Build with options for gprof" OFF GCC)
 LYX_OPTION(EXTERNAL_BOOST       "Use external boost" OFF GCC)
 LYX_OPTION(PROGRAM_SUFFIX       "Append version suffix to binaries" ON GCC)
 LYX_OPTION(DEBUG_GLIBC          "Enable libstdc++ debug mode" OFF GCC)
 LYX_OPTION(DEBUG_GLIBC_PEDANTIC "Enable libstdc++ pedantic debug mode" OFF GCC)
 LYX_OPTION(STDLIB_DEBUG         "Use debug stdlib" OFF GCC)
-LYX_OPTION(PROFILE              "Build with options for gprof" OFF GCC)
 
 # MSVC specific
 LYX_OPTION(CONSOLE               "Show console on Windows" ON MSVC)
@@ -175,6 +185,12 @@ if(help OR HELP)
 endif()
 
 # Check option dependencies
+if (LYX_ENABLE_VALGRIND_TESTS)
+       find_program(VALGRIND_EXECUTABLE "valgrind")
+       if (NOT VALGRIND_EXECUTABLE)
+               message(FATAL_ERROR "Cannot use valgrind tests, executable valgrind is missing. Please disable LYX_ENABLE_VALGRIND_TESTS")
+       endif()
+endif()
 
 if(LYX_DMG)
        set(LYX_BUNDLE ON)
@@ -238,8 +254,6 @@ if(LYX_DEPENDENCIES_DOWNLOAD)
        endforeach()
 endif()
 
-
-
 message(STATUS)
 
 set(EXECUTABLE_OUTPUT_PATH  ${TOP_BINARY_DIR}/bin)
@@ -249,15 +263,33 @@ else()
        set(LIBRARY_OUTPUT_PATH  ${TOP_BINARY_DIR}/lib)
 endif()
 
+set(LYX_IPO_SUPPORTED OFF)
+if (POLICY CMP0069)
+  cmake_policy(SET CMP0069 NEW)
+  if(LYX_USE_IPO MATCHES "AUTO")
+    # Enable LTO if supported and not debugging
+    if (NOT LYX_DEBUG)
+      include(CheckIPOSupported)
+      check_ipo_supported(RESULT LYX_IPO_SUPPORTED)
+    endif()
+  else()
+    set(LYX_IPO_SUPPORTED ${LYX_USE_IPO})
+  endif()
+endif()
+if (LYX_IPO_SUPPORTED)
+  set(LYX_USE_IPO "ON" CACHE STRING "Use interprocedural optimization" FORCE)
+else()
+  set(LYX_USE_IPO "OFF" CACHE STRING "Use interprocedural optimization" FORCE)
+endif()
 
 # Set to some meaningful default
 find_package(CXX11Compiler)
 if(NOT CXX11COMPILER_FOUND)
        message(FATAL_ERROR "A C++11 compatible compiler is required.")
 endif()
-set(LYX_GCC11_MODE)
+unset(LYX_GCC11_MODE)
 if(UNIX OR MINGW)
-       if (CMAKE_CXX_COMPILER_ID MATCHES "^[cC]lang$")
+       if (CMAKE_CXX_COMPILER_ID MATCHES "^([cC]lang|AppleClang)$")
          # ignore the GCC_VERSION for clang
          # and use the resulting CXX11_STD_REGEX found in FindCXX11Compiler.cmake
          message(STATUS "Using clang")
@@ -267,30 +299,36 @@ if(UNIX OR MINGW)
            set(LYX_USE_STD_REGEX 0)
          endif()
        else()
-         execute_process(COMMAND ${CMAKE_CXX_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION OUTPUT_STRIP_TRAILING_WHITESPACE)
+         execute_process(COMMAND ${CMAKE_CXX_COMPILER} -dumpfullversion OUTPUT_VARIABLE GCC_VERSION ERROR_VARIABLE _error RESULT_VARIABLE _err OUTPUT_STRIP_TRAILING_WHITESPACE)
+         #message(STATUS "dumpfullversion: error = ${_error}, result = ${_err}")
+         if (_err)
+           # previous check failed, try again with _old_ parameter
+           execute_process(COMMAND ${CMAKE_CXX_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION ERROR_VARIABLE _error RESULT_VARIABLE _err OUTPUT_STRIP_TRAILING_WHITESPACE)
+           #message(STATUS "dumpversion: error = ${_error}, result = ${_err}")
+         endif()
          message(STATUS "Using GCC version ${GCC_VERSION}")
-         if(GCC_VERSION VERSION_LESS 4.9)
-                 if(GCC_VERSION VERSION_LESS 4.6)
-                         message(FATAL_ERROR "gcc >= 4.6 is required.")
-                 endif()
-                 # <regex> in gcc is unusable in versions less than 4.9.0
-                 # see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53631
-                 set(LYX_USE_STD_REGEX 0)
+         if(GCC_VERSION VERSION_LESS 4.6)
+               message(FATAL_ERROR "gcc >= 4.6 is required.")
+         elseif(GCC_VERSION VERSION_LESS 4.9)
+               # <regex> in gcc is unusable in versions less than 4.9.0
+               # see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53631
+               set(LYX_USE_STD_REGEX 0)
          else()
-                 set(LYX_USE_STD_REGEX 1)
+               set(LYX_USE_STD_REGEX 1)
          endif()
        endif()
        set(LYX_GCC11_MODE "${CXX11_FLAG}")
 else()
-       set(LYX_USE_STD_REGEX 0)
-#      if(MSVC10)
-#              set(LYX_USE_STD_REGEX 1) #TODO should we use it in ECMAScript mode?
-#      endif()
+       if(MSVC_VERSION LESS 1900)
+               # Drop support for msvc versions prior to 1900 (Visual Studio 2015)
+               message(FATAL_ERROR "Visual Studio >= 2015 is required.")
+               set(LYX_USE_STD_REGEX 0)
+       else()
+               set(LYX_USE_STD_REGEX 1)
+       endif()
 endif()
 
 
-set(VERSION_INFO "CMake Build")
-
 # Try to get some informations from configure.ac
 
 include(LyXPaths)
@@ -320,6 +358,9 @@ endif()
 macro(setstripped _varname)
        if(${ARGC} GREATER 1)
                string(STRIP "${ARGV1}" _v)
+                if (_v MATCHES "^\\[\(.+\)\\]$")
+                  set(_v ${CMAKE_MATCH_1})
+                endif()
                if(USE_POSIX_PACKAGING)
                        string(TOLOWER ${_v} ${_varname})
                else()
@@ -332,15 +373,28 @@ endmacro(setstripped)
 
 foreach(_c_l ${_config_lines} )
        if(_c_l MATCHES "^AC_INIT\\(\([^,]+\),\([^,]+\), *\\[\([^,]+\)\\] *,\(.*\)")
-               setstripped(PACKAGE_BASE ${CMAKE_MATCH_1})
-               setstripped(PACKAGE_VERSION ${CMAKE_MATCH_2})
-               setstripped(PACKAGE_BUGREPORT ${CMAKE_MATCH_3})
-               if(PACKAGE_VERSION MATCHES "^\([0-9]+\)\\.\([0-9]+\)\(\\.\([0-9]+\)\)?.*$")
+                # Not using CMAKE_MATCH_ directly is needed, because
+                # its value is now changed inside macro setstripped
+                set(_PB ${CMAKE_MATCH_1})
+                set(_PV ${CMAKE_MATCH_2})
+                set(_PBU ${CMAKE_MATCH_3})
+               setstripped(PACKAGE_BASE ${_PB})
+               setstripped(PACKAGE_VERSION ${_PV})
+               setstripped(PACKAGE_BUGREPORT ${_PBU})
+               if(PACKAGE_VERSION MATCHES "^\([0-9]+\)\\.\([0-9]+\)\(\\.\([0-9]+\)\(\\.\([0-9]+\)\)?\)?.*$")
                        set(LYX_MAJOR_VERSION ${CMAKE_MATCH_1})
                        set(LYX_MINOR_VERSION ${CMAKE_MATCH_2})
-                       set(LYX_RELEASE_VERSION ${CMAKE_MATCH_4})
+                       set(LYX_RELEASE_LEVEL ${CMAKE_MATCH_4})
+                       set(LYX_RELEASE_PATCH ${CMAKE_MATCH_6})
                        set(LYX_DIR_VER "LYX_DIR_${CMAKE_MATCH_1}${CMAKE_MATCH_2}x")
                        set(LYX_USERDIR_VER "LYX_USERDIR_${CMAKE_MATCH_1}${CMAKE_MATCH_2}x")
+                       if (NOT LYX_RELEASE_LEVEL)
+                               set(LYX_RELEASE_LEVEL 0)
+                       endif()
+                       if (NOT LYX_RELEASE_PATCH)
+                               set(LYX_RELEASE_PATCH 0)
+                       endif()
+                       set(LYX_VERSION "${LYX_MAJOR_VERSION}.${LYX_MINOR_VERSION}")
                        if ("${LYX_SUFFIX_VALUE}" MATCHES "")
                          set(LYX_INSTALL_SUFFIX "${LYX_MAJOR_VERSION}.${LYX_MINOR_VERSION}")
                        else()
@@ -352,27 +406,40 @@ foreach(_c_l ${_config_lines} )
                set(LYX_DATE "${CMAKE_MATCH_1}")
        endif()
 endforeach(_c_l)
+unset(_config_lines)
 
 FIND_PROGRAM(LYX_GITVERSION git)
 #message(STATUS "gitversion = ${LYX_GITVERSION}")
-set(LYX_REVISION_VERSION ${LYX_RELEASE_VERSION})
-set(LYX_PACKAGE_RELEASE "1")
+set(LYX_REVISION_VERSION ${LYX_RELEASE_LEVEL})
+set(LYX_PACKAGE_RELEASE "UNDEFINED")
 if(LYX_GITVERSION)
   if (LYX_LOCALVERSIONING)
-    # Find the revision number and for later use
+    # Find the revision number for later use
     EXECUTE_PROCESS(COMMAND ${LYX_GITVERSION} describe --match 2.0.0 HEAD
-      WORKING_DIRECTORY "${TOP_SRC_DIR}" OUTPUT_VARIABLE tmp_LYX_PACKAGE_RELEASE OUTPUT_STRIP_TRAILING_WHITESPACE)
-    if (tmp_LYX_PACKAGE_RELEASE MATCHES "^2\\.0\\.0\\-\([0-9]+\)\\-\(.*\)$")
-      set(LYX_PACKAGE_RELEASE ${CMAKE_MATCH_2})
-      # We will add offset of 40000 to get appropriate value to
-      # previous svn.
-      # We use this value than also to set the package-patch-value
-      MATH(EXPR tmp_REVISION_VERSION "(${CMAKE_MATCH_1}+40000)")
-      set(LYX_REVISION_VERSION "${LYX_RELEASE_VERSION}-${tmp_REVISION_VERSION}git")
-      set(ENABLE_DIST ON)
+      WORKING_DIRECTORY "${TOP_SRC_DIR}"
+      RESULT_VARIABLE tmp_GIT_RESULT
+      OUTPUT_VARIABLE tmp_LYX_PACKAGE_RELEASE
+      ERROR_VARIABLE tmp_GIT_ERROR
+      OUTPUT_STRIP_TRAILING_WHITESPACE)
+    if (tmp_GIT_RESULT EQUAL 0)
+      if (tmp_LYX_PACKAGE_RELEASE MATCHES "^2\\.0\\.0\\-\([0-9]+\)\\-\(.*\)$")
+       set(LYX_PACKAGE_RELEASE ${CMAKE_MATCH_2})
+       # We will add offset of 40000 to get appropriate value to
+       # previous svn.
+       # We use this value than also to set the package-patch-value
+       MATH(EXPR tmp_REVISION_VERSION "(${CMAKE_MATCH_1}+40000)")
+       set(LYX_REVISION_VERSION "${LYX_RELEASE_LEVEL}-${tmp_REVISION_VERSION}git")
+       set(ENABLE_DIST ON)
+      endif()
     endif()
   endif()
 endif()
+if (LYX_PACKAGE_RELEASE MATCHES "UNDEFINED")
+  set(LYX_PACKAGE_RELEASE  "1")
+  if (LYX_RELEASE_PATCH GREATER 0)
+    set(LYX_REVISION_VERSION "${LYX_RELEASE_LEVEL}.${LYX_RELEASE_PATCH}")
+  endif()
+endif()
 
 # Set the programs (lyx, tex2lyx, etc.) suffix
 # When building an OS X bundle, we will append
@@ -458,12 +525,16 @@ else()
   set(SYSTEM_DATADIR "${CMAKE_INSTALL_PREFIX}")
 endif()
 
-if(CMAKE_COMPILER_IS_GNUCXX)
-  message(STATUS "CMAKE_COMPILER_IS_GNUCXX = ${CMAKE_COMPILER_IS_GNUCXX}")
-  set(suffixing ${LYX_PROGRAM_SUFFIX})
-else()
+if(NOT CMAKE_COMPILER_IS_GNUCXX)
   # Not a GCC compiler, programs do not have a suffix
   set(suffixing ${LYX_PACKAGE_SUFFIX})
+elseif(WIN32 AND MINGW)
+  # We want to use a suffix for the package in this case,
+  # even if not for the program
+  set(suffixing ${LYX_PACKAGE_SUFFIX})
+else()
+  message(STATUS "CMAKE_COMPILER_IS_GNUCXX = ${CMAKE_COMPILER_IS_GNUCXX}")
+  set(suffixing ${LYX_PROGRAM_SUFFIX})
 endif()
 
 # The define PACKAGE below allows lyx-executable to find its default configuration files
@@ -472,7 +543,6 @@ endif()
 #    get_default_user_support_dir()
 #    relative_system_support_dir()
 # in src/support/Package.cpp
-#
 if(suffixing)
        set(PACKAGE ${PACKAGE_BASE}${LYX_INSTALL_SUFFIX})
 else()
@@ -506,22 +576,27 @@ if(NOT LYX_DATA_SUBDIR)
        endif()
 endif()
 
-set(LYX_ABS_INSTALLED_DATADIR "${CMAKE_INSTALL_PREFIX}")
+set(LYX_ABS_INSTALLED_DATADIR "${CMAKE_INSTALL_PREFIX}/${LYX_DATA_SUBDIR}")
 get_locale_destination(LYX_LOCALEDIR)
 set(LYX_ABS_INSTALLED_LOCALEDIR "${CMAKE_INSTALL_PREFIX}/${LYX_LOCALEDIR}")
 set(LYX_ABS_TOP_SRCDIR "${TOP_SRC_DIR}")
 
 if(LYX_BUNDLE AND APPLE)
-       set(LYX_MAN_DIR "${LYX_DATA_SUBDIR}" CACHE STRING "Install location for man pages.")
+       set(LYX_MAN_DIR_tmp "${LYX_DATA_SUBDIR}")
 else()
        if(WIN32)
-               set(LYX_MAN_DIR "${CMAKE_BINARY_DIR}/usr/local/man" CACHE STRING "Install location for man pages.")
+               set(LYX_MAN_DIR_tmp "${CMAKE_BINARY_DIR}/usr/local/man/")
        elseif(UNIX)
-               set(LYX_MAN_DIR "${CMAKE_INSTALL_PREFIX}/share/man" CACHE STRING "Install location for man pages.")
+               set(LYX_MAN_DIR_tmp "${CMAKE_INSTALL_PREFIX}/share/man/")
        else()
-               set(LYX_MAN_DIR "${CMAKE_INSTALL_PREFIX}/man" CACHE STRING "Install location for man pages.")
+               set(LYX_MAN_DIR_tmp "${CMAKE_INSTALL_PREFIX}/man/")
        endif()
 endif()
+if (NOT LYX_MAN_DIR_tmp EQUAL "${LYX_MAN_DIR}")
+       unset(LYX_MAN_DIR CACHE)
+       set(LYX_MAN_DIR "${LYX_MAN_DIR_tmp}" CACHE STRING "Install location for man pages.")
+endif()
+unset(LYX_MAN_DIR_tmp)
 mark_as_advanced(LYX_MAN_DIR)
 
 # The Win installer cannot be built by CMake because one needs to install plugins for NSIS
@@ -548,7 +623,7 @@ include(ProjectSourceGroup)
 
 
 if(LYX_PROFILE AND NOT MSVC)
-       set(CMAKE_BUILD_TYPE Profile CACHE TYPE STRING FORCE)
+       set(CMAKE_BUILD_TYPE Profile CACHE STRING "Profile build type" FORCE)
        set(CMAKE_CXX_FLAGS_PROFILE "${CMAKE_CXX_FLAGS_RELEASE} -pg")
        set(CMAKE_EXE_LINKER_FLAGS  "${CMAKE_EXE_LINKER_FLAGS}  -pg")
 else()
@@ -598,12 +673,12 @@ if(NOT MSVC)
        if(LYX_STDLIB_DEBUG)
                set(LYX_CXX_FLAGS "${LYX_CXX_FLAGS} -D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC")
        endif()
-       set(CMAKE_CXX_FLAGS       "${LYX_CXX_FLAGS} -fno-strict-aliasing " CACHE TYPE STRING FORCE)
-       set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g3 -D_DEBUG" CACHE TYPE STRING FORCE)
+       set(CMAKE_CXX_FLAGS       "${LYX_CXX_FLAGS} -fno-strict-aliasing " CACHE STRING "Set CXX flags" FORCE)
+       set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g3 -D_DEBUG" CACHE STRING "Set debug flags" FORCE)
        if(MINGW)
-               set(CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG" CACHE TYPE STRING FORCE)
+               set(CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG" CACHE STRING "Set release flags for Mingw" FORCE)
        else()
-               set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG" CACHE TYPE STRING FORCE)
+               set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG" CACHE STRING "Set release flags" FORCE)
        endif()
 endif()
 
@@ -622,7 +697,7 @@ endif()
 set(min_qt5_version "5.6")
 if(LYX_USE_QT MATCHES "AUTO")
        # try qt5 first
-       find_package(Qt5Core QUIET)
+       find_package(Qt5Core CONFIG QUIET)
        if(Qt5Core_FOUND)
                set(LYX_USE_QT "QT5" CACHE STRING "Valid qt version" FORCE)
                message(STATUS "Qt5Core_VERSION = ${Qt5Core_VERSION}")
@@ -638,14 +713,14 @@ if(LYX_USE_QT MATCHES "AUTO")
 endif()
 if(LYX_USE_QT MATCHES "QT5")
        # set QPA_XCB if QT uses X11
-       find_package(Qt5Core REQUIRED)
+       find_package(Qt5Core CONFIG REQUIRED)
        if (Qt5Core_FOUND)
-               find_package(Qt5Widgets REQUIRED)
+               find_package(Qt5Widgets CONFIG REQUIRED)
                if(APPLE)
-                       find_package(Qt5MacExtras REQUIRED)
+                       find_package(Qt5MacExtras CONFIG REQUIRED)
                endif()
-               find_package(Qt5X11Extras QUIET)
-               find_package(Qt5WinExtras QUIET)
+               find_package(Qt5X11Extras CONFIG QUIET)
+               find_package(Qt5WinExtras CONFIG QUIET)
                set(QTVERSION ${Qt5Core_VERSION})
                if (QTVERSION VERSION_LESS ${min_qt5_version})
                        message(STATUS "QTVERSION = \"${QTVERSION}\"")
@@ -657,8 +732,11 @@ if(LYX_USE_QT MATCHES "QT5")
                        # Subject: cmake compilation error
                        #message(FATAL_ERROR "Wrong Qt-Version")
                endif()
-               macro (qt_use_modules)
-                       qt5_use_modules(${ARGN})
+               macro (qt_use_modules lyxtarget)
+                       foreach (_tg ${ARGN})
+                               find_package(Qt5${_tg} CONFIG REQUIRED)
+                               target_link_libraries(${lyxtarget} Qt5::${_tg})
+                       endforeach()
                endmacro()
                macro (qt_add_resources)
                        qt5_add_resources(${ARGN})
@@ -729,7 +807,7 @@ if(NOT LYX_EXTERNAL_HUNSPELL)
     message(STATUS "     - library: ${HUNSPELL_LIBRARY}")
 endif()
 
-foreach(_spell "ASPELL" "Enchant" "Hunspell")
+foreach(_spell "ASPELL" "ENCHANT" "HUNSPELL")
   string(TOUPPER ${_spell} _upspell)
   if (NOT ${_upspell}_FOUND)
     find_package(${_spell})
@@ -758,17 +836,29 @@ unset(LYX_PYTHON_EXECUTABLE CACHE)
 unset(PYTHON_VERSION_MAJOR)
 unset(PYTHON_VERSION_MINOR)
 unset(PYTHON_VERSION_STRING)
-find_package(PythonInterp 3.3 QUIET)
-if(NOT PYTHONINTERP_FOUND)
-  unset(PYTHON_EXECUTABLE CACHE)
-  find_package(PythonInterp 2.0 REQUIRED)
-  if(NOT PYTHON_VERSION_STRING VERSION_LESS 2.8)
-    message(FATAL_ERROR "Python interpreter found, but is not suitable")
+if (CMAKE_VERSION VERSION_LESS "3.13")
+  find_package(PythonInterp 3.5 QUIET)
+  if(NOT PYTHONINTERP_FOUND)
+    find_package(PythonInterp 2.0 REQUIRED)
+    if(NOT PYTHON_VERSION_STRING VERSION_LESS 2.8)
+      message(FATAL_ERROR "Python interpreter found, but is not suitable")
+    endif()
+  endif()
+  set(LYX_PYTHON_EXECUTABLE ${PYTHON_EXECUTABLE} CACHE FILEPATH "Python to be used by LyX")
+else()
+  find_package(Python3 3.5 QUIET)
+  if(NOT Python3_Interpreter_FOUND)
+    unset(PYTHON_EXECUTABLE CACHE)
+    find_package(Python2 2.0 REQUIRED)
+    if(NOT Python2_VERSION VERSION_LESS 2.8)
+      message(FATAL_ERROR "Python interpreter found, but is not suitable")
+    endif()
+    set(LYX_PYTHON_EXECUTABLE ${Python2_EXECUTABLE} CACHE FILEPATH "Python to be used by LyX")
+  else()
+    set(LYX_PYTHON_EXECUTABLE ${Python3_EXECUTABLE} CACHE FILEPATH "Python to be used by LyX")
   endif()
 endif()
 
-set(LYX_PYTHON_EXECUTABLE ${PYTHON_EXECUTABLE} CACHE FILEPATH "Python to be used by LyX")
-
 if(LYX_NLS)
        find_package(LyXGettext)
        if(LYX_PYTHON_EXECUTABLE AND GETTEXT_FOUND)
@@ -797,6 +887,10 @@ else()
   add_subdirectory(3rdparty/zlib)
 endif()
 
+if(NOT LYX_EXTERNAL_DTL)
+  add_subdirectory(3rdparty/dtl)
+endif()
+
 if(LYX_USE_STD_REGEX)
   # Set only include path.
   # Use internal boost, which is known to exist
@@ -855,7 +949,7 @@ endif()
 
 message(STATUS "")
 foreach(_v PACKAGE PACKAGE_VERSION
-       PROGRAM_SUFFIX LYX_DIR_VER LYX_USERDIR_VER
+       PROGRAM_SUFFIX LYX_VERSION LYX_DIR_VER LYX_USERDIR_VER
        LYX_ABS_TOP_SRCDIR
        LYX_ABS_INSTALLED_DATADIR LYX_ABS_INSTALLED_LOCALEDIR LYX_INSTALL_SUFFIX)
        if(NOT DEFINED ${_v})
@@ -916,7 +1010,7 @@ if(MSVC)
 
        if(LYX_WALL)
                # Use the highest warning level
-               set(CMAKE_CXX_WARNING_LEVEL 4 CACHE TYPE STRING FORCE)
+               set(CMAKE_CXX_WARNING_LEVEL 4 CACHE STRING "Warning level" FORCE)
 
                if(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
                        string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
@@ -940,7 +1034,7 @@ if(MSVC)
                set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} /Wp64 ${MSVC_W_ERROR} ${MSVC_W_DISABLE}")
 
        else()
-               set(CMAKE_CXX_WARNING_LEVEL 3 CACHE TYPE STRING FORCE)
+               set(CMAKE_CXX_WARNING_LEVEL 3 CACHE STRING "Warning level" FORCE)
 
                # add here warnings which should produce an error /weXXXX
                set(MSVC_W_ERROR   "/we4101 /we4189")
@@ -997,7 +1091,43 @@ endif()
 include(${LYX_CMAKE_DIR}/ConfigureChecks.cmake)
 configure_file(${LYX_CMAKE_DIR}/configCompiler.h.cmake ${TOP_BINARY_DIR}/configCompiler.h)
 
+unset(opts)
+foreach(_option ${LYX_OPTIONS})
+  if(${_option}_show_message)
+    string(SUBSTRING "${_option}                            " 0 31 _var)
+    get_property(_prop CACHE ${_option} PROPERTY STRINGS)
+    list(FIND LYX_OPTION_STRINGS ${_option} _index)
+    if (${_index} GREATER -1)
+      set(_isset ${${_option}})
+    elseif(${_option})
+      set(_isset ON)
+    else()
+      set(_isset OFF)
+    endif()
+    string(SUBSTRING "${_isset}           " 0 10 _val)
+    set(opts "${opts} ${_option}(${${_option}})")
+  endif()
+endforeach()
+set(tmp_vi "CMake Build")
+list(APPEND tmp_vi "  Host name:               ${CMAKE_HOST_SYSTEM_NAME}")
+list(APPEND tmp_vi "  Host processor:          ${CMAKE_HOST_SYSTEM_PROCESSOR}")
+list(APPEND tmp_vi "  Build flags:             ${opts}")
+list(APPEND tmp_vi "  C++ Compiler:            ${CMAKE_CXX_COMPILER_ID} (${CMAKE_CXX_COMPILER_VERSION})")
+list(APPEND tmp_vi "  C++ Compiler flags:      ${CMAKE_CXX_FLAGS}")
+if (LYX_DEBUG)
+list(APPEND tmp_vi "  C++ Compiler user flags: ${CMAKE_CXX_FLAGS_DEBUG}")
+else()
+list(APPEND tmp_vi "  C++ Compiler user flags: ${CMAKE_CXX_FLAGS_RELEASE}")
+endif()
+list(APPEND tmp_vi "  Qt version:              ${QTVERSION}")
+list(APPEND tmp_vi "  LyX binary dir:          ${CMAKE_INSTALL_PREFIX}/${LYX_UTILITIES_INSTALL_PATH}")
+get_data_destination(dest_data)
+list(APPEND tmp_vi "  LyX files dir:           ${CMAKE_INSTALL_PREFIX}/${dest_data}")
+string(REPLACE ";" "\\n" VERSION_INFO "${tmp_vi}")
+
 configure_file(${LYX_CMAKE_DIR}/config.h.cmake ${TOP_BINARY_DIR}/config.h)
+unset(opts)
+unset(tmp_vi)
 
 if(QTVERSION MATCHES "^([0-9]+)\\.([0-9]+)\\.([0-9]+).*")
        MATH(EXPR QT4_VERSION "(${CMAKE_MATCH_1}<<16)|(${CMAKE_MATCH_2}<<8)|${CMAKE_MATCH_3}")