# minmax.m4 serial 1 dnl Copyright (C) 2005 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_MINMAX], [ AC_REQUIRE([gl_PREREQ_MINMAX]) ]) # Prerequisites of lib/minmax.h. AC_DEFUN([gl_PREREQ_MINMAX], [ gl_MINMAX_IN_HEADER([limits.h]) gl_MINMAX_IN_HEADER([sys/param.h]) ]) dnl gl_MINMAX_IN_HEADER(HEADER) AC_DEFUN([gl_MINMAX_IN_HEADER], [ define([header],[translit([$1],[./-], [___])]) define([HEADER],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-], [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])]) AC_CACHE_CHECK([whether <$1> defines MIN and MAX], [gl_cv_minmax_in_]header, [AC_TRY_COMPILE([#include <$1> int x = MIN (42, 17);], [], [gl_cv_minmax_in_]header[=yes], [gl_cv_minmax_in_]header[=no])]) if test $gl_cv_minmax_in_[]header = yes; then AC_DEFINE([HAVE_MINMAX_IN_]HEADER, 1, [Define to 1 if <$1> defines the MIN and MAX macros.]) fi undefine([HEADER]) undefine([header]) ])