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# Find Readline
# Readline_FOUND - system has Readline lib
# Readline_INCLUDE_DIR - the Readline include directory
# Readline_LIBRARIES - Libraries needed to use Readline
# Readline_COMPENTRY_FUNC_RETURNS_CHARPTR - Indicates if compentry function
# returns a (char *)
find_path(Readline_INCLUDE_DIR NAMES readline/readline.h)
find_library(Readline_LIBRARIES NAMES readline)
# Check which standard of readline is installed on the system.
# https://github.com/CVC4/CVC4/issues/702
if(Readline_INCLUDE_DIR)
include(CheckCXXSourceCompiles)
set(CMAKE_REQUIRED_QUIET TRUE)
set(CMAKE_REQUIRED_LIBRARIES readline)
check_cxx_source_compiles(
"#include <stdio.h>
#include <readline/readline.h>
char* foo(const char*, int) { return (char*)0; }
int main() { rl_completion_entry_function = foo; return 0; }"
Readline_COMPENTRY_FUNC_RETURNS_CHARPTR
)
unset(CMAKE_REQUIRED_QUIET)
unset(CMAKE_REQUIRED_LIBRARIES)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Readline
DEFAULT_MSG Readline_INCLUDE_DIR Readline_LIBRARIES)
mark_as_advanced(
Readline_INCLUDE_DIR
Readline_LIBRARIES
Readline_COMPENTRY_FUNC_RETURNS_CHARPTR
)
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