kc3-lang/gnulib/m4/nonblocking.m4

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• Hash : 12856373
  Author :
  Date : 2011-04-19T10:38:30
  

  Move the support of O_NONBLOCK in open() to the 'open' module.
  
  * modules/nonblocking (Depends-on): Remove 'open'.
  * m4/nonblocking.m4 (gl_NONBLOCKING_IO_BODY): Set
  gl_cv_have_open_O_NONBLOCK.
  * m4/open.m4 (gl_FUNC_OPEN): Replace open() also when required for
  O_NONBLOCK support.
  * doc/posix-functions/open.texi: Document support for O_NONBLOCK.
  

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• m4/nonblocking.m4

• # nonblocking.m4 serial 2
  dnl Copyright (C) 2011 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.
  
  dnl Tests whether non-blocking I/O is natively supported by read(), write().
  dnl Sets gl_cv_have_nonblocking.
  dnl Also tests whether open() supports O_NONBLOCK.
  dnl Sets gl_cv_have_open_O_NONBLOCK.
  AC_DEFUN([gl_NONBLOCKING_IO],
  [
    dnl Use AC_REQUIRE here, so that the default behavior below is expanded
    dnl once only, before all statements that occur in other macros.
    AC_REQUIRE([gl_NONBLOCKING_IO_BODY])
  ])
  
  AC_DEFUN([gl_NONBLOCKING_IO_BODY],
  [
    AC_REQUIRE([AC_CANONICAL_HOST])
    case "$host_os" in
      mingw*) gl_cv_have_nonblocking=no ;;
      *)      gl_cv_have_nonblocking=yes ;;
    esac
    case "$host_os" in
      mingw*) gl_cv_have_open_O_NONBLOCK=no ;;
      *)      gl_cv_have_open_O_NONBLOCK=yes ;;
    esac
  ])
  

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