# unistd_h.m4 serial 2 dnl Copyright (C) 2006 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 Written by Simon Josefsson AC_DEFUN([gl_HEADER_UNISTD], [ dnl Prerequisites of lib/unistd.h. AC_CHECK_HEADERS([unistd.h], [ UNISTD_H='' ], [ UNISTD_H='unistd.h' ]) AC_SUBST(UNISTD_H) ]) |