Mercurial > gnulib
view m4/dup3.m4 @ 40196:e63f5d3edab5
relocatable-prog: Update documentation.
* doc/relocatable-maint.texi (Supporting Relocation): Update to match
the recent changes.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 24 Feb 2019 01:49:15 +0100 |
parents | b06060465f09 |
children |
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# dup3.m4 serial 5 dnl Copyright (C) 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_DEFUN([gl_FUNC_DUP3], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) dnl Persuade glibc <unistd.h> to declare dup3(). AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) AC_CHECK_FUNCS_ONCE([dup3 setdtablesize]) if test $ac_cv_func_dup3 != yes; then HAVE_DUP3=0 fi dnl Not needed yet, because dup3 is unconditionally replaced. dnl dnl Replace dup3() for supporting the gnulib-defined fchdir() function, dnl dnl to keep fchdir's bookkeeping up-to-date. dnl m4_ifdef([gl_FUNC_FCHDIR], [ dnl gl_TEST_FCHDIR dnl if test $HAVE_FCHDIR = 0; then dnl if test $HAVE_DUP3 = 1; then dnl REPLACE_DUP3=1 dnl fi dnl fi dnl ]) ])