cmake/modules/FindReadline.cmake

   1 # READLINE_FOUND
   2 # READLINE_INCLUDE_DIRS
   3 # READLINE_LIBRARIES
   4
   5 if (READLINE_INCLUDE_DIRS AND READLINE_LIBRARIES)
   6         set(READLINE_FIND_QUIETLY TRUE)
   7 endif()
   8
   9 include(CheckCXXSourceCompiles)
  10
  11 find_path(READLINE_INCLUDE_DIRS NAMES readline/readline.h)
  12 if (NOT READLINE_INCLUDE_DIRS AND NOT READLINE_FIND_QUIETLY)
  13         message(ERROR "couldn't find the readline/readline.h header")
  14 endif()
  15 find_library(READLINE_LIBRARIES NAMES libreadline readline)
  16 if (NOT READLINE_LIBRARIES AND NOT READLINE_FIND_QUIETLY)
  17         message(ERROR "couldn't find libreadline")
  18 endif()
  19
  20 if (READLINE_INCLUDE_DIRS AND READLINE_LIBRARIES)
  21         set(_save_req_includes ${CMAKE_REQUIRED_INCLUDES})
  22         set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES} ${READLINE_INCLUDE_DIR})
  23         check_cxx_source_compiles("
  24                 #include <stdio.h>
  25                 #include <readline/readline.h>
  26                 #if !defined(RL_VERSION_MAJOR) || !defined(RL_VERSION_MINOR)
  27                 #error Ancient version of readline
  28                 #endif
  29                 int main() { return 0; }
  30                 "
  31                 _rl_version_check)
  32         set(CMAKE_REQUIRED_INCLUDES ${_save_req_includes})
  33         if (NOT _rl_version_check)
  34                 set(READLINE_INCLUDE_DIRS READLINE-NOTFOUND)
  35                 set(READLINE_LIBRARIES READLINE-NOTFOUND)
  36                 if (NOT READLINE_FIND_QUIETLY)
  37                         message(ERROR "Ancient/unsupported version of readline")
  38                 endif()
  39         endif()
  40 endif()
  41
  42 if (NOT READLINE_INCLUDE_DIRS OR NOT READLINE_LIBRARIES)
  43         set(READLINE_LIBRARIES READLINE-NOTFOUND)
  44         set(READLINE_INCLUDE_DIRS READLINE-NOTFOUND)
  45 endif()
  46
  47 include(FindPackageHandleStandardArgs)
  48 FIND_PACKAGE_HANDLE_STANDARD_ARGS(READLINE REQUIRED_VARS READLINE_INCLUDE_DIRS READLINE_LIBRARIES)
  49