Mercurial > hg > octave-kai > gnulib-hg
changeset 5881:e7da59a08057
autoconf tests for the 'minmax' module.
| author | Bruno Haible <bruno@clisp.org> |
|---|---|
| date | Mon, 23 May 2005 10:25:53 +0000 |
| parents | f403eaab7742 |
| children | 4166e2857787 |
| files | m4/minmax.m4 |
| diffstat | 1 files changed, 38 insertions(+), 0 deletions(-) [+] |
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new file mode 100644 --- /dev/null +++ b/m4/minmax.m4 @@ -0,0 +1,38 @@ +# 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]) +])