CMake/Modules/FindReadline.cmake

   1 #-------------------------------------------------------------------------------
   2 #               ______                _     ____          __  __
   3 #              |  ____|             _| |_  / __ \   /\   |  \/  |
   4 #              | |__ _ __ ___  ___ /     \| |  | | /  \  | \  / |
   5 #              |  __| '__/ _ \/ _ ( (| |) ) |  | |/ /\ \ | |\/| |
   6 #              | |  | | |  __/  __/\_   _/| |__| / ____ \| |  | |
   7 #              |_|  |_|  \___|\___|  |_|   \____/_/    \_\_|  |_|
   8 #
   9 #                   FreeFOAM: The Cross-Platform CFD Toolkit
  10 #
  11 # Copyright (C) 2008-2011 Michael Wild <themiwi@users.sf.net>
  12 #                         Gerber van der Graaf <gerber_graaf@users.sf.net>
  13 #-------------------------------------------------------------------------------
  14 # License
  15 #   This file is part of FreeFOAM.
  16 #
  17 #   FreeFOAM is free software; you can redistribute it and/or modify it
  18 #   under the terms of the GNU General Public License as published by the
  19 #   Free Software Foundation; either version 2 of the License, or (at your
  20 #   option) any later version.
  21 #
  22 #   FreeFOAM is distributed in the hope that it will be useful, but WITHOUT
  23 #   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  24 #   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  25 #   for more details.
  26 #
  27 #   You should have received a copy of the GNU General Public License
  28 #   along with FreeFOAM; if not, write to the Free Software Foundation,
  29 #   Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  30 #-------------------------------------------------------------------------------
  31
  32 # - Find Readline
  33 #
  34 # This module looks for readline support and defines the following values
  35 #  READLINE_FOUND          TRUE if readline has been found
  36 #  READLINE_INCLUDE_DIRS   include path for readline
  37 #  READLINE_LIBRARIES      libraries to link against
  38 #
  39 # This module also checks whether linking against the readline library needs
  40 # (n)curses or termcap and offers the user the choice between them with the
  41 # variable READLINE_USE_CURSES. The default is OFF (use termcap).
  42
  43 include(CheckCSourceCompiles)
  44
  45 find_path(READLINE_INCLUDE_DIR readline/readline.h)
  46 find_library(READLINE_LIBRARY readline)
  47
  48 mark_as_advanced(
  49   READLINE_INCLUDE_DIR
  50   READLINE_LIBRARY
  51   )
  52
  53 set(_READLINE_VARS READLINE_LIBRARY READLINE_INCLUDE_DIR READLINE_WORKS)
  54
  55 if(READLINE_INCLUDE_DIR AND READLINE_LIBRARY)
  56   set(READLINE_INCLUDE_DIRS "${READLINE_INCLUDE_DIR}")
  57   set(READLINE_LIBRARIES "${READLINE_LIBRARY}")
  58
  59   # check whether it needs to be linked against curses or termcap
  60   set(_fr_CMAKE_REQUIRED_FLAGS_bak "${CMAKE_REQUIRED_FLAGS}")
  61   set(_fr_CMAKE_REQUIRED_DEFINITIONS_bak "${CMAKE_REQUIRED_DEFINITIONS}")
  62   set(_fr_CMAKE_REQUIRED_INCLUDES_bak "${CMAKE_REQUIRED_INCLUDES}")
  63   set(_fr_CMAKE_REQUIRED_LIBRARIES_bak "${CMAKE_REQUIRED_LIBRARIES}")
  64
  65   set(CMAKE_REQUIRED_FLAGS)
  66   set(CMAKE_REQUIRED_DEFINITIONS)
  67   set(CMAKE_REQUIRED_INCLUDES "${READLINE_INCLUDE_DIR}")
  68   set(CMAKE_REQUIRED_LIBRARIES "${READLINE_LIBRARY}")
  69   set(READLINE_WORKS TRUE)
  70   check_c_source_compiles("int main(){return 0;}" _READLINE_WORKS_STANDALONE)
  71
  72   if(NOT _READLINE_WORKS_STANDALONE)
  73     set(READLINE_WORKS FALSE)
  74     option(READLINE_USE_CURSES
  75       "Use the curses library instead of the termcap library" OFF)
  76     mark_as_advanced(READLINE_USE_CURSES)
  77     if(READLINE_USE_CURSES)
  78       find_package(Curses REQUIRED)
  79       list(APPEND _READLINE_VARS CURSES_FOUND)
  80       # check whether it works with curses
  81       if(CURSES_FOUND)
  82         set(CMAKE_REQUIRED_LIBRARIES "${READLINE_LIBRARY};${CURSES_LIBRARIES}")
  83         check_c_source_compiles("int main(){return 0;}" _READLINE_WORKS_WITH_CURSES)
  84         if(_READLINE_WORKS_WITH_CURSES)
  85           set(READLINE_WORKS TRUE)
  86           list(APPEND READLINE_LIBRARIES "${CURSES_LIBRARIES}")
  87         endif()
  88       endif()
  89     else()
  90       find_library(TERMCAP_LIBRARY termcap)
  91       mark_as_advanced(TERMCAP_LIBRARY)
  92       list(APPEND _READLINE_VARS TERMCAP_LIBRARY)
  93       # check whether it works with termcap
  94       if(TERMCAP_LIBRARY)
  95         set(CMAKE_REQUIRED_LIBRARIES "${READLINE_LIBRARY};${TERMCAP_LIBRARY}")
  96         check_c_source_compiles("int main(){return 0;}" _READLINE_WORKS_WITH_TERMCAP)
  97         if(_READLINE_WORKS_WITH_TERMCAP)
  98           set(READLINE_WORKS TRUE)
  99           list(APPEND READLINE_LIBRARIES "${TERMCAP_LIBRARY}")
 100         endif()
 101       endif()
 102     endif()
 103   endif()
 104   set(CMAKE_REQUIRED_FLAGS "${_fr_CMAKE_REQUIRED_FLAGS_bak}")
 105   set(CMAKE_REQUIRED_DEFINITIONS "${_fr_CMAKE_REQUIRED_DEFINITIONS_bak}")
 106   set(CMAKE_REQUIRED_INCLUDES "${_fr_CMAKE_REQUIRED_INCLUDES_bak}")
 107   set(CMAKE_REQUIRED_LIBRARIES "${_fr_CMAKE_REQUIRED_LIBRARIES_bak}")
 108 endif()
 109
 110 include(FindPackageHandleStandardArgs)
 111 find_package_handle_standard_args(Readline DEFAULT_MSG ${_READLINE_VARS})
 112
 113 # ------------------------- vim: set sw=2 sts=2 et: --------------- end-of-file