--- /dev/null
+dnl Check to find the readline headers/libraries
+
+AC_DEFUN([tinc_READLINE],
+[
+ AC_ARG_ENABLE([readline],
+ AS_HELP_STRING([--disable-readline], [disable readline support]))
+ AS_IF([test "x$enable_readline" != "xno"], [
+ AC_DEFINE(HAVE_READLINE, 1, [have readline support])
+ readline=true
+ AC_ARG_WITH(readline,
+ AS_HELP_STRING([--with-readline=DIR], [readline base directory, or:]),
+ [readline="$withval"
+ CPPFLAGS="$CPPFLAGS -I$withval/include"
+ LDFLAGS="$LDFLAGS -L$withval/lib"]
+ )
+
+ AC_ARG_WITH(readline-include,
+ AS_HELP_STRING([--with-readline-include=DIR], [readline headers directory]),
+ [readline_include="$withval"
+ CPPFLAGS="$CPPFLAGS -I$withval"]
+ )
+
+ AC_ARG_WITH(readline-lib,
+ AS_HELP_STRING([--with-readline-lib=DIR], [readline library directory]),
+ [readline_lib="$withval"
+ LDFLAGS="$LDFLAGS -L$withval"]
+ )
+
+ AC_CHECK_HEADERS([readline/readline.h readline/history.h],
+ [],
+ [AC_MSG_ERROR("readline header files not found."); break]
+ )
+
+ AC_CHECK_LIB(readline, readline,
+ [READLINE_LIBS="-lreadline"],
+ [AC_MSG_ERROR("readline library not found.")]
+ )
+ ])
+
+ AC_SUBST(READLINE_LIBS)
+])