dnl Process this file with autoconf to produce a configure script.
AC_INIT(include/netinet/if_ether.h)

dnl Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_MAKE_SET

AC_CHECK_LIB(X11_s, main, result=yes, result=no)
if test $result = "yes"; then
    LIBS="$LIBS -lX11_s"
fi
AC_CHECK_LIB(Xm_s, main, result=yes, result=no)
if test $result = "yes"; then
    LIBS="$LIBS -lXm_s"
fi
AC_CHECK_LIB(Xt_s, main, result=yes, result=no)
if test $result = "yes"; then
    LIBS="$LIBS -lXt_s"
fi
AC_CHECK_LIB(c_s, main, result=yes, result=no)
if test $result = "yes"; then
    LIBS="$LIBS -lc_s"
fi
AC_CHECK_LIB(nsl, main, result=yes, result=no)
if test $result = "yes"; then
    LIBS="$LIBS -lnsl"
fi
AC_CHECK_LIB(resolv, main, result=yes, result=no)
if test $result = "yes"; then
    LIBS="$LIBS -lresolv"
fi
AC_CHECK_LIB(rpc, main, result=yes, result=no)
if test $result = "yes"; then
    LIBS="$LIBS -lrpc"
fi

dnl check for socket compatibility libraries (Solaris)
check_tirpc=""
AC_MSG_CHECKING(for rpc socket compatibility)
echo "main() {return(1);}" > configtest.c
if test -z "`${CC-cc} -o configtest.out configtest.c /usr/ucblib/librpcsoc.so 2>&1`"; then
    AC_MSG_RESULT(yes)
    # do we accept the -R option?
    AC_MSG_CHECKING(for runtime linkage option)
    if test -z "`${CC-cc} -o configtest.out -R/usr/lib configtest.c 2>&1`"; then
	AC_MSG_RESULT(yes)
	LIBS="-L/usr/ucblib -R/usr/ucblib -lrpcsvc -lrpcsoc $LIBS"
    else
	AC_MSG_RESULT(no)
	check_tirpc="y"
    fi
else
    AC_MSG_RESULT(no)
    check_tirpc="y"
fi
rm -f configtest.*

dnl check for librpcsvc only if we're not already using
dnl /usr/ucblib/librpcsvc
if test -n "$check_tirpc"; then
  AC_CHECK_LIB(rpcsvc, main, result=yes, result=no)
  if test $result = "yes"; then
    LIBS="$LIBS -lrpcsvc"
  fi
fi
AC_CHECK_LIB(socket, main, result=yes, result=no)
if test $result = "yes"; then
    LIBS="$LIBS -lsocket"
fi
AC_CHECK_LIB(sun, getpwnam, result=yes, result=no)
if test $result = "yes"; then
    LIBS="$LIBS -lsun"
fi
AC_CHECK_LIB(PW, main, result=yes, result=no)
if test $result = "yes"; then
    dnl must go before other libs on HP-UX 11
    LIBS="-lPW $LIBS"
fi

dnl check for +DAportable option (HP-UX)
AC_MSG_CHECKING(for +DAportable)
echo "main() {return(1);}" > configtest.c
if test -z "`${CC-cc} -c $CFLAGS +DAportable $CPPFLAGS configtest.c 2>&1`"; then
    AC_MSG_RESULT(yes)
    AC_MSG_CHECKING(for +DAportable when linking)
    if test -z "`${CC-cc} -o configtest $CFLAGS +DAportable $CPPFLAGS $LDFLAGS configtest.c $LIBS 2>&1`"; then
	AC_MSG_RESULT(yes)
        CFLAGS="$CFLAGS +DAportable"
    else
	AC_MSG_RESULT(no)
    fi
else
    AC_MSG_RESULT(no)
fi
rm -f configtest.*

dnl check for missing /usr/include/asm link
skip_limits_h=""
AC_CHECK_HEADER(asm/socket.h, result=yes, result=no)
if test $result = no; then
    AC_MSG_CHECKING(for socket.h under /usr/src/linux)
    echo "#include <asm/socket.h>" > configtest.c
    echo "main() {return(1);}" >> configtest.c
    if test -z "`${CC-cc} -I/usr/src/linux/include -c -o configtest.o configtest.c 2>&1`"; then
        AC_MSG_RESULT(yes)
	CPPFLAGS="$CPPFLAGS -I/usr/src/linux/include"
	skip_limits_h="y"
    else
        AC_MSG_RESULT(no)
	AC_MSG_CHECKING(for socket.h in asm-i386)
	if test -r /usr/src/linux/include/asm-i386/socket.h; then
	    CPPFLAGS="$CPPFLAGS -I`pwd`/include/ASM-i386"
	    AC_MSG_RESULT(yes)
	else
	    AC_MSG_RESULT(no)
	fi
    fi
    rm configtest.*
fi

dnl check for missing /usr/include/linux link
if test -z "$skip_limits_h"; then
    AC_CHECK_HEADER(linux/limits.h, result=yes, result=no)
    if test $result = no; then
        AC_MSG_CHECKING(for limits.h under /usr/src/linux)
        AC_TRY_COMPILE([#include "/usr/src/linux/include/linux/limits.h"], [return(0)], result=yes, result=no)
        if test $result = yes; then
	    CPPFLAGS="$CPPFLAGS -I/usr/src/linux/include"
        fi
        AC_MSG_RESULT($result)
    fi
fi

dnl header files
AC_HEADER_STDC

dnl check for TIRPC only if we're not using the rpc socket compatibility libraries
if test -n "$check_tirpc"; then
    AC_MSG_CHECKING(for TIRPC compatibility)
    AC_TRY_COMPILE([#include <rpc/rpc.h>
#include <sys/tiuser.h>
#include <stropts.h>], [return(0)], result=yes, result=no)
    if test $result = yes; then
	AC_DEFINE(TIRPC)
    fi
    AC_MSG_RESULT($result)
fi

dnl typedefs
AC_TYPE_GETGROUPS

dnl check whether sys_errlist is declared in stdio.h or errno.h
AC_MSG_CHECKING(if sys_errlist is declared)
AC_TRY_COMPILE([#include <stdio.h>
#include <errno.h>], [char *msg = *(sys_errlist + 1)], result=yes, result=no)
if test $result = yes; then
    AC_DEFINE(SYS_ERRLIST_DECLARED)
fi
AC_MSG_RESULT($result)

dnl check whether we need our own netinet
AC_MSG_CHECKING(if system netinet headers work)
AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
#include <netinet/tcp.h>], [int i = ICMP_UNREACH; int i1 = ICMP_UNREACH_HOST;
int j = ICMP_MINLEN; int j1 = ICMP_UNREACH_PORT;
struct icmp k; struct tcphdr *l;
int m = sizeof(l->th_dport)], result=yes, result=no)
AC_MSG_RESULT($result)
if test $result = no; then
    CPPFLAGS="$CPPFLAGS -I`pwd`/include"
    AC_DEFINE(_BSD_SOURCE)
    dnl check for glibc21
    AC_MSG_CHECKING(for glibc21)
    AC_TRY_COMPILE([#include <rpc/rpc.h>], [return(0)], result=yes, result=no)
    if test $result = yes; then
        AC_MSG_RESULT(no)
    else
        CPPFLAGS="$CPPFLAGS -I`pwd`/include/glibc21"
        AC_MSG_RESULT(yes)
    fi
fi

AC_SUBST(PROGS)
PROGS=all

dnl check whether we need to compile showmount
if test -n "`uname | grep Linux`"; then
    AC_CHECK_PROG(HAVE_SHOWMOUNT,showmount,"yes","no",/usr/bin:/usr/sbin:/bin:/sbin:/usr/local/bin:/usr/local/sbin:$PATH)
    if test $HAVE_SHOWMOUNT = "no"; then
	PROGS="$PROGS showmount"
    fi
fi
dnl check whether we need to compile rpcgen
AC_PATH_PROG(RPCGEN,rpcgen,../../bin/rpcgen,/usr/bin:/usr/sbin:/bin:/sbin:/usr/local/bin:/usr/local/sbin:$PATH)
if test $RPCGEN = "../../bin/rpcgen"; then
    PROGS="rpcgen $PROGS"
fi
AC_OUTPUT(Makefile)
perl reconfig