cmake_modules/FindReadline.cmake

   1 if(NOT READLINE_INCLUDE_DIR OR NOT READLINE_LIBRARY)
   2     find_path(READLINE_INCLUDE_DIR readline/readline.h)
   3     find_library(READLINE_LIBRARY NAMES readline)
   4 endif()
   5
   6 if (READLINE_INCLUDE_DIR AND READLINE_LIBRARY)
   7     set(READLINE_FOUND TRUE)
   8 endif()
   9
  10 if (READLINE_INCLUDE_DIR AND EXISTS "${READLINE_INCLUDE_DIR}/readline/readline.h")
  11   file(STRINGS "${READLINE_INCLUDE_DIR}/readline/readline.h"
  12                READLINE_MAJOR_VERSION
  13        REGEX "^#define RL_VERSION_MAJOR.*$")
  14   file(STRINGS "${READLINE_INCLUDE_DIR}/readline/readline.h"
  15                READLINE_MINOR_VERSION
  16        REGEX "^#define RL_VERSION_MINOR.*$")
  17
  18   string(REGEX REPLACE "^.*RL_VERSION_MAJOR.*([0-9]+).*$"
  19                        "\\1"
  20                        READLINE_MAJOR_VERSION
  21                        "${READLINE_MAJOR_VERSION}")
  22   string(REGEX REPLACE "^.*RL_VERSION_MINOR.*([0-9]+).*$"
  23                        "\\1"
  24                        READLINE_MINOR_VERSION
  25                        "${READLINE_MINOR_VERSION}")
  26
  27   if(READLINE_MAJOR_VERSION)
  28     set(READLINE_VERSION "${READLINE_MAJOR_VERSION}.${READLINE_MINOR_VERSION}")
  29   else()
  30     set(READLINE_VERSION "(unknown)")
  31   endif()
  32 endif ()
  33
  34 if (READLINE_FOUND)
  35   if (Readline_FIND_VERSION VERSION_GREATER READLINE_VERSION)
  36     message(STATUS "Found version ${READLINE_VERSION} of GNU Readline at ${READLINE_LIBRARY}, but version ${Readline_FIND_VERSION} required")
  37     unset(READLINE_FOUND)
  38   else()
  39     if (NOT READLINE_FIND_QUIETLY)
  40       message(STATUS "Found GNU Readline version ${READLINE_VERSION}: ${READLINE_LIBRARY}")
  41     endif ()
  42   endif ()
  43 else ()
  44   if (READLINE_FIND_REQUIRED)
  45     message(FATAL_ERROR "Could not find GNU Readline")
  46   endif ()
  47 endif ()