if dep_readline.found() and \
cc.has_header('readline/readline.h', dependencies: dep_readline) and \
cc.has_header('readline/history.h', dependencies: dep_readline)
if dep_readline.found() and \
cc.has_header('readline/readline.h', dependencies: dep_readline) and \
cc.has_header('readline/history.h', dependencies: dep_readline)