view m4/passfd.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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# passfd.m4 serial 8
dnl Copyright (C) 2011-2019 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_DEFUN([gl_PASSFD],
[
  AC_REQUIRE([gl_HEADER_SYS_SOCKET])
  AC_CHECK_FUNCS_ONCE([recvmsg sendmsg])

  dnl Persuade AIX 5.2 <sys/socket.h> to declare CMSG_SPACE, CMSG_LEN.
  dnl CMSG_FIRSTHDR is POSIX 2008, but CMSG_SPACE is only in RFC 3542.
  AC_DEFINE([_LINUX_SOURCE_COMPAT], [1],
    [Define in order to get some macros on AIX systems.])

  dnl Passfd prefers the POSIX use of msg.msg_control if the CMSG_* macros
  dnl are present, but can fall back to BSD 4.3 style of msg.msg_accrights.
  AC_CHECK_MEMBERS([struct msghdr.msg_accrights], [], [], [[
    #include <sys/types.h>
    #include <sys/socket.h>
  ]])
])