sinclude(./aclocal.m4)dnl Autoconf lossage. GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc. # This file is part of the GNU C Library. # The GNU C Library is free software; you can redistribute it and/or # modify it under the terms of the GNU Library General Public License # as published by the Free Software Foundation; either version 2 of # the License, or (at your option) any later version. # The GNU C Library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Library General Public License for more details. # You should have received a copy of the GNU Library General Public # License along with the GNU C Library; see the file COPYING.LIB. If # not, write to the Free Software Foundation, Inc., 675 Mass Ave, # Cambridge, MA 02139, USA. dnl configure fragment for Unix-based systems. This is processed by Autoconf, dnl but we just use the AC_MSG_* macros. This file is sourced by the dnl top-level configure script. Note that we use the prefix `unix_' on all dnl shell variables here, to avoid conflicting with any variables the dnl top-level script might be using. sysincludedir=/usr/include # XXX # Find the file we will be using, or something like it. unix_found= for unix_dir in $sysnames; do if test -r $sysdep_dir/$unix_dir/syscall.h; then unix_found=$unix_dir break fi done if test $unix_found = stub; then # XXX This list of possibilities duplicates the list in Makefile. for try in sys.s sys/sys.s sys.S sys/sys.S syscall.h sys/syscall.h; do if test -r $sysincludedir/$try; then unix_syscall_h=$sysincludedir/$try break fi done else unix_syscall_h=$sysdep_dir/$unix_dir/syscall.h fi test -n "$unix_syscall_h" && { # Where to put the .S files we write. if test "`pwd`" = "`(cd $srcdir; pwd)`"; then unix_generated_dirpfx=sysdeps/unix/ else # We are running in a separate build directory. unix_generated_dirpfx= fi # This variable will collect the names of the files we create. unix_generated= unix_srcs= unix_dests= # These several functions are system calls on Unix systems which have them. # The details of these calls are universal enough that if a system's # defines the system call number, we know that the simple # system call implementations in unix/common will be sufficient. for unix_function in \ dup2 lstat mkdir rmdir readlink symlink rename swapon \ access select getgroups setgroups \ getitimer setitimer \ getdomainname/getdomain=bsd/bsd4.4 \ setdomainname/setdomain=bsd/bsd4.4 \ profil=bsd do # $unix_function => $unix_syscall $unix_srcname # CALL CALL CALL # CALL/NAME CALL NAME unix_srcname= unix_srcdir=common eval "unix_syscall=`echo $unix_function | \ sed -e 's@=\(.*\)$@ unix_srcdir=\1@' \ -e 's@/\(.*\)$@ unix_srcname=\1@'`" test -z "$unix_srcname" && unix_srcname=$unix_function unix_implementor=none for unix_dir in $sysnames; do if test -r $sysdep_dir/$unix_dir/${unix_srcname}.c || test -r $sysdep_dir/$unix_dir/${unix_srcname}.S || test -r $sysdep_dir/$unix_dir/${unix_srcname}.s; then unix_implementor=$unix_dir break fi done # mkdir and rmdir have implementations in unix/sysv, but # the simple syscall versions are preferable if available. test $unix_syscall = mkdir -o $unix_syscall = rmdir && \ test $unix_implementor = unix/sysv && \ unix_implementor=generic case $unix_implementor in none|stub|generic|posix) # The chosen implementation of ${unix_syscall} is a boring one. # We want to use the unix/common implementation instead iff # ${unix_syscall} appears in . AC_MSG_CHECKING(for ${unix_syscall} system call) changequote(,)dnl We need to use [ and ] for real now. if grep -i "[ _]${unix_syscall}[ ]" $unix_syscall_h >/dev/null changequote([,])dnl Back to Autoconf land. then # It does seem to be present in . AC_MSG_RESULT(yes) unix_dests="$unix_dests ${unix_generated_dirpfx}${unix_srcname}.S" unix_srcs="$unix_srcs sysdeps/unix/${unix_srcdir}/${unix_srcname}.S" unix_generated="$unix_generated $unix_generated_dirpfx${unix_srcname}.S" else AC_MSG_RESULT(no) fi ;; *) ;; esac done # Autoconf magic in the top-level configure.in causes config.status to # actually make the links. libc_link_dests="$libc_link_dests $unix_dests" libc_link_sources="$libc_link_sources $unix_srcs" # Store the list of files we created in config.make; Makefile uses it. test -n "$unix_generated" && config_vars="$config_vars unix-generated := \$(addprefix \$(objpfx),${unix_generated})" }