| 1 | dnl
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| 2 | dnl socket.m4 --- autoconf input file for gawk
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| 3 | dnl
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| 4 | dnl Copyright (C) 1995, 1996, 1998, 1999, 2000, 2003, 2004 the Free Software Foundation, Inc.
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| 5 | dnl
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| 6 | dnl This file is part of GAWK, the GNU implementation of the
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| 7 | dnl AWK Progamming Language.
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| 8 | dnl
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| 9 | dnl GAWK is free software; you can redistribute it and/or modify
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| 10 | dnl it under the terms of the GNU General Public License as published by
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| 11 | dnl the Free Software Foundation; either version 2 of the License, or
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| 12 | dnl (at your option) any later version.
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| 13 | dnl
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| 14 | dnl GAWK is distributed in the hope that it will be useful,
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| 15 | dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 16 | dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 17 | dnl GNU General Public License for more details.
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| 18 | dnl
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| 19 | dnl You should have received a copy of the GNU General Public License
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| 20 | dnl along with this program; if not, write to the Free Software
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| 21 | dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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| 22 | dnl
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| 23 |
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| 24 | dnl Find the socket libraries
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| 25 | dnl largely stolen from AC_PATH_XTRA
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| 26 | AC_DEFUN([GAWK_AC_LIB_SOCKETS], [
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| 27 | gawk_have_sockets=no
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| 28 | # Check for system-dependent location of socket libraries
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| 29 |
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| 30 | SOCKET_LIBS=
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| 31 | if test "$ISC" = yes; then
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| 32 | SOCKET_LIBS="-lnsl_s -linet"
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| 33 | else
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| 34 | # Martyn.Johnson@cl.cam.ac.uk says this is needed for Ultrix, if the X
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| 35 | # libraries were built with DECnet support. And karl@cs.umb.edu says
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| 36 | # the Alpha needs dnet_stub (dnet does not exist).
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| 37 | #
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| 38 | # ADR: Is this needed just for sockets???
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| 39 | # AC_CHECK_LIB(dnet, dnet_ntoa, [SOCKET_LIBS="$SOCKET_LIBS -ldnet"])
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| 40 | # if test $ac_cv_lib_dnet_ntoa = no; then
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| 41 | # AC_CHECK_LIB(dnet_stub, dnet_ntoa,
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| 42 | # [SOCKET_LIBS="$SOCKET_LIBS -ldnet_stub"])
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| 43 | # fi
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| 44 |
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| 45 | # msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT,
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| 46 | # to get the SysV transport functions.
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| 47 | # chad@anasazi.com says the Pyramid MIS-ES running DC/OSx (SVR4)
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| 48 | # needs -lnsl.
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| 49 | # The nsl library prevents programs from opening the X display
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| 50 | # on Irix 5.2, according to dickey@clark.net.
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| 51 | AC_CHECK_FUNC(gethostbyname)
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| 52 | if test $ac_cv_func_gethostbyname = no; then
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| 53 | AC_CHECK_LIB(nsl, gethostbyname, SOCKET_LIBS="$SOCKET_LIBS -lnsl")
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| 54 | fi
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| 55 |
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| 56 | # lieder@skyler.mavd.honeywell.com says without -lsocket,
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| 57 | # socket/setsockopt and other routines are undefined under SCO ODT
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| 58 | # 2.0. But -lsocket is broken on IRIX 5.2 (and is not necessary
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| 59 | # on later versions), says simon@lia.di.epfl.ch: it contains
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| 60 | # gethostby* variants that don't use the nameserver (or something).
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| 61 | # -lsocket must be given before -lnsl if both are needed.
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| 62 | # We assume that if connect needs -lnsl, so does gethostbyname.
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| 63 | AC_CHECK_FUNC(connect)
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| 64 | if test $ac_cv_func_connect = no; then
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| 65 | AC_CHECK_LIB(socket, connect, SOCKET_LIBS="-lsocket $SOCKET_LIBS"
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| 66 | gawk_have_sockets=yes, ,
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| 67 | $SOCKET_LIBS)
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| 68 | else
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| 69 | gawk_have_sockets=yes
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| 70 | fi
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| 71 | fi
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| 72 |
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| 73 | if test "${gawk_have_sockets}" = "yes"
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| 74 | then
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| 75 | AC_MSG_CHECKING([where to find the socket library calls])
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| 76 | case "${SOCKET_LIBS}" in
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| 77 | ?*) gawk_lib_loc="${SOCKET_LIBS}" ;;
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| 78 | *) gawk_lib_loc="the standard library" ;;
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| 79 | esac
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| 80 | AC_MSG_RESULT([${gawk_lib_loc}])
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| 81 |
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| 82 | AC_DEFINE(HAVE_SOCKETS, 1, [we have sockets on this system])
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| 83 | fi
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| 84 | AC_SUBST(SOCKET_LIBS)dnl
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| 85 | ])dnl
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