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# READLINE_FOUND
# READLINE_INCLUDE_DIRS
# READLINE_LIBRARIES
if (READLINE_INCLUDE_DIRS AND READLINE_LIBRARIES)
set(READLINE_FIND_QUIETLY TRUE)
endif()
include(CheckCXXSourceCompiles)
find_path(READLINE_INCLUDE_DIRS NAMES readline/readline.h)
if (NOT READLINE_INCLUDE_DIRS AND NOT READLINE_FIND_QUIETLY)
message(ERROR "couldn't find the readline/readline.h header")
endif()
find_library(READLINE_LIBRARIES NAMES libreadline readline)
if (NOT READLINE_LIBRARIES AND NOT READLINE_FIND_QUIETLY)
message(ERROR "couldn't find libreadline")
endif()
if (READLINE_INCLUDE_DIRS AND READLINE_LIBRARIES)
set(_save_req_includes ${CMAKE_REQUIRED_INCLUDES})
set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES} ${READLINE_INCLUDE_DIR})
check_cxx_source_compiles("
#include <cstdio>
#include <readline/readline.h>
#if !defined(RL_VERSION_MAJOR) || !defined(RL_VERSION_MINOR)
#error Ancient version of readline
#endif
int main() { return 0; }
"
_rl_version_check)
set(CMAKE_REQUIRED_INCLUDES ${_save_req_includes})
if (NOT _rl_version_check)
set(READLINE_INCLUDE_DIRS READLINE-NOTFOUND)
set(READLINE_LIBRARIES READLINE-NOTFOUND)
if (NOT READLINE_FIND_QUIETLY)
message(ERROR "Ancient/unsupported version of readline")
endif()
endif()
endif()
if (NOT READLINE_INCLUDE_DIRS OR NOT READLINE_LIBRARIES)
set(READLINE_LIBRARIES READLINE-NOTFOUND)
set(READLINE_INCLUDE_DIRS READLINE-NOTFOUND)
endif()
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Readline REQUIRED_VARS READLINE_INCLUDE_DIRS READLINE_LIBRARIES)
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