Mercurial > gnulib
view m4/minmax.m4 @ 40140:81f075eaa990
ptsname_r: Work around bug on Android 4.3.
* m4/ptsname_r.m4 (gl_FUNC_PTSNAME_R): Define
HAVE_ESSENTIALLY_WORKING_PTSNAME_R. Test whether the return value is
correct.
* lib/ptsname_r.c (__ptsname_r): If HAVE_ESSENTIALLY_WORKING_PTSNAME_R
is defined, just fix the return value.
* doc/glibc-functions/ptsname_r.texi: Mention the Android bug. Reword:
The behaviour of musl libc is nothing to be "fixed", since it is
compliant with the next POSIX standard.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 26 Jan 2019 15:23:19 +0100 |
parents | b06060465f09 |
children |
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# minmax.m4 serial 4 dnl Copyright (C) 2005, 2009-2019 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_PREREQ([2.53]) 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) dnl The parameter has to be a literal header name; it cannot be macro, dnl nor a shell variable. (Because autoheader collects only AC_DEFINE dnl invocations with a literal macro name.) AC_DEFUN([gl_MINMAX_IN_HEADER], [ m4_pushdef([header], AS_TR_SH([$1])) m4_pushdef([HEADER], AS_TR_CPP([$1])) AC_CACHE_CHECK([whether <$1> defines MIN and MAX], [gl_cv_minmax_in_]header, [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#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 m4_popdef([HEADER]) m4_popdef([header]) ])