aclocal.m4

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	    $2=yacc
    fi
    if test "$$1" = flex -a -n "$3" ; then
	    $1="$$1 -P$3"
	    $2="$$2 -p $3"
    fi])

dnl
dnl Checks to see if union wait is used with WEXITSTATUS()
dnl
dnl usage:
dnl
dnl	AC_LBL_UNION_WAIT
dnl
dnl results:
dnl
dnl	DECLWAITSTATUS (defined)
dnl
AC_DEFUN(AC_LBL_UNION_WAIT,
    [AC_MSG_CHECKING(if union wait is used)
    AC_CACHE_VAL(ac_cv_lbl_union_wait,
	AC_TRY_COMPILE([
#	include <sys/types.h>
#	include <sys/wait.h>],
	    [int status;
	    u_int i = WEXITSTATUS(status);
	    u_int j = waitpid(0, &status, 0);],
	    ac_cv_lbl_union_wait=no,
	    ac_cv_lbl_union_wait=yes))
    AC_MSG_RESULT($ac_cv_lbl_union_wait)
    if test $ac_cv_lbl_union_wait = yes ; then
	    AC_DEFINE(DECLWAITSTATUS,union wait)
    else
	    AC_DEFINE(DECLWAITSTATUS,int)
    fi])

dnl
dnl Checks to see if the sockaddr struct has the 4.4 BSD sa_len member
dnl
dnl usage:
dnl
dnl	AC_LBL_SOCKADDR_SA_LEN
dnl
dnl results:
dnl
dnl	HAVE_SOCKADDR_SA_LEN (defined)
dnl
AC_DEFUN(AC_LBL_SOCKADDR_SA_LEN,
    [AC_MSG_CHECKING(if sockaddr struct has sa_len member)
    AC_CACHE_VAL(ac_cv_lbl_sockaddr_has_sa_len,
	AC_TRY_COMPILE([
#	include <sys/types.h>
#	include <sys/socket.h>],
	[u_int i = sizeof(((struct sockaddr *)0)->sa_len)],
	ac_cv_lbl_sockaddr_has_sa_len=yes,
	ac_cv_lbl_sockaddr_has_sa_len=no))
    AC_MSG_RESULT($ac_cv_lbl_sockaddr_has_sa_len)
    if test $ac_cv_lbl_sockaddr_has_sa_len = yes ; then
	    AC_DEFINE(HAVE_SOCKADDR_SA_LEN)
    fi])

dnl
dnl Checks to see if -R is used
dnl
dnl usage:
dnl
dnl	AC_LBL_HAVE_RUN_PATH
dnl
dnl results:
dnl
dnl	ac_cv_lbl_have_run_path (yes or no)
dnl
AC_DEFUN(AC_LBL_HAVE_RUN_PATH,
    [AC_MSG_CHECKING(for ${CC-cc} -R)
    AC_CACHE_VAL(ac_cv_lbl_have_run_path,
	[echo 'main(){}' > conftest.c
	${CC-cc} -o conftest conftest.c -R/a1/b2/c3 >conftest.out 2>&1
	if test ! -s conftest.out ; then
		ac_cv_lbl_have_run_path=yes
	else
		ac_cv_lbl_have_run_path=no
	fi
	rm -f conftest*])
    AC_MSG_RESULT($ac_cv_lbl_have_run_path)
    ])

dnl
dnl Due to the stupid way it's implemented, AC_CHECK_TYPE is nearly useless.
dnl
dnl usage:
dnl
dnl	AC_LBL_CHECK_TYPE
dnl
dnl results:
dnl
dnl	int32_t (defined)
dnl	u_int32_t (defined)
dnl
AC_DEFUN(AC_LBL_CHECK_TYPE,
    [AC_MSG_CHECKING(for $1 using $CC)
    AC_CACHE_VAL(ac_cv_lbl_have_$1,
	AC_TRY_COMPILE([
#	include "confdefs.h"
#	include <sys/types.h>
#	if STDC_HEADERS
#	include <stdlib.h>
#	include <stddef.h>
#	endif],
	[$1 i],
	ac_cv_lbl_have_$1=yes,
	ac_cv_lbl_have_$1=no))
    AC_MSG_RESULT($ac_cv_lbl_have_$1)
    if test $ac_cv_lbl_have_$1 = no ; then
	    AC_DEFINE($1, $2)
    fi])

dnl
dnl Checks to see if unaligned memory accesses fail
dnl
dnl usage:
dnl
dnl	AC_LBL_UNALIGNED_ACCESS
dnl
dnl results:
dnl
dnl	LBL_ALIGN (DEFINED)
dnl
AC_DEFUN(AC_LBL_UNALIGNED_ACCESS,
    [AC_MSG_CHECKING(if unaligned accesses fail)
    AC_CACHE_VAL(ac_cv_lbl_unaligned_fail,
	[case "$target_cpu" in

	alpha|hp*|mips|sparc)
		ac_cv_lbl_unaligned_fail=yes
		;;

	*)
		cat >conftest.c <<EOF
#		include <sys/types.h>
#		include <sys/wait.h>
#		include <stdio.h>
		unsigned char a[[5]] = { 1, 2, 3, 4, 5 };
		main() {
		unsigned int i;
		pid_t pid;
		int status;
		/* avoid "core dumped" message */
		pid = fork();
		if (pid <  0)
			exit(2);
		if (pid > 0) {
			/* parent */
			pid = waitpid(pid, &status, 0);
			if (pid < 0)
				exit(3);
			exit(!WIFEXITED(status));
		}
		/* child */
		i = *(unsigned int *)&a[[1]];
		printf("%d\n", i);
		exit(0);
		}
EOF
		${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS \
		    conftest.c $LIBS >/dev/null 2>&1
		if test ! -x conftest ; then
			dnl failed to compile for some reason
			ac_cv_lbl_unaligned_fail=yes
		else
			./conftest >conftest.out
			if test ! -s conftest.out ; then
				ac_cv_lbl_unaligned_fail=yes
			else
				ac_cv_lbl_unaligned_fail=no
			fi
		fi
		rm -f conftest* core core.conftest
		;;
	esac])
    AC_MSG_RESULT($ac_cv_lbl_unaligned_fail)
    if test $ac_cv_lbl_unaligned_fail = yes ; then
	    AC_DEFINE(LBL_ALIGN)
    fi])

dnl
dnl If using gcc and the file .devel exists:
dnl	Compile with -g (if supported) and -Wall
dnl	If using gcc 2, do extra prototype checking
dnl	If an os prototype include exists, symlink os-proto.h to it
dnl
dnl usage:
dnl
dnl	AC_LBL_DEVEL(copt)
dnl
dnl results:
dnl
dnl	$1 (copt appended)
dnl	HAVE_OS_PROTO_H (defined)
dnl	os-proto.h (symlinked)
dnl
AC_DEFUN(AC_LBL_DEVEL,
    [rm -f os-proto.h
    if test "${LBL_CFLAGS+set}" = set; then
	    $1="$$1 ${LBL_CFLAGS}"
    fi
    if test -f .devel ; then
	    if test "$GCC" = yes ; then
		    if test "${LBL_CFLAGS+set}" != set; then
			    if test "$ac_cv_prog_cc_g" = yes ; then
				    $1="-g $$1"
			    fi
			    $1="$$1 -Wall"
			    if test $ac_cv_lbl_gcc_vers -gt 1 ; then
				    $1="$$1 -Wmissing-prototypes -Wstrict-prototypes"
			    fi
		    fi
	    else
		    case "$target_os" in

		    irix6*)
			    V_CCOPT="$V_CCOPT -n32"
			    ;;

		    *)
			    ;;
		    esac
	    fi
	    os=`echo $target_os | sed -e 's/\([[0-9]][[0-9]]*\)[[^0-9]].*$/\1/'`
	    name="lbl/os-$os.h"
	    if test -f $name ; then
		    ln -s $name os-proto.h
		    AC_DEFINE(HAVE_OS_PROTO_H)
	    else
		    AC_MSG_WARN(can't find $name)
	    fi
    fi])

dnl
dnl Improved version of AC_CHECK_LIB
dnl
dnl Thanks to John Hawkinson ([e-mail])
dnl
dnl usage:
dnl
dnl	AC_LBL_CHECK_LIB(LIBRARY, FUNCTION [, ACTION-IF-FOUND [,
dnl	    ACTION-IF-NOT-FOUND [, OTHER-LIBRARIES]]])
dnl
dnl results:
dnl
dnl	LIBS
dnl

define(AC_LBL_CHECK_LIB,
[AC_MSG_CHECKING([for $2 in -l$1])
dnl Use a cache variable name containing both the library and function name,
dnl because the test really is for library $1 defining function $2, not
dnl just for library $1.  Separate tests with the same $1 and different $2's
dnl may have different results.
ac_lib_var=`echo $1['_']$2['_']$5 | sed 'y%./+- %__p__%'`
AC_CACHE_VAL(ac_cv_lbl_lib_$ac_lib_var,
[ac_save_LIBS="$LIBS"
LIBS="-l$1 $5 $LIBS"
AC_TRY_LINK(dnl
ifelse([$2], [main], , dnl Avoid conflicting decl of main.
[/* Override any gcc2 internal prototype to avoid an error.  */
]ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
extern "C"
#endif
])dnl
[/* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
char $2();
]),
	    [$2()],
	    eval "ac_cv_lbl_lib_$ac_lib_var=yes",
	    eval "ac_cv_lbl_lib_$ac_lib_var=no")
LIBS="$ac_save_LIBS"
])dnl
if eval "test \"`echo '$ac_cv_lbl_lib_'$ac_lib_var`\" = yes"; then
  AC_MSG_RESULT(yes)
  ifelse([$3], ,
[changequote(, )dnl
  ac_tr_lib=HAVE_LIB`echo $1 | sed -e 's/[^a-zA-Z0-9_]/_/g' \
    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
changequote([, ])dnl
  AC_DEFINE_UNQUOTED($ac_tr_lib)
  LIBS="-l$1 $LIBS"
], [$3])
else
  AC_MSG_RESULT(no)
ifelse([$4], , , [$4
])dnl
fi
])

dnl
dnl AC_LBL_LIBRARY_NET
dnl
dnl This test is for network applications that need socket() and
dnl gethostbyname() -ish functions.  Under Solaris, those applications
dnl need to link with "-lsocket -lnsl".  Under IRIX, they need to link
dnl with "-lnsl" but should *not* link with "-lsocket" because
dnl libsocket.a breaks a number of things (for instance:
dnl gethostbyname() under IRIX 5.2, and snoop sockets under most
dnl versions of IRIX).
dnl
dnl Unfortunately, many application developers are not aware of this,
dnl and mistakenly write tests that cause -lsocket to be used under
dnl IRIX.  It is also easy to write tests that cause -lnsl to be used
dnl under operating systems where neither are necessary (or useful),
dnl such as SunOS 4.1.4, which uses -lnsl for TLI.
dnl
dnl This test exists so that every application developer does not test
dnl this in a different, and subtly broken fashion.

dnl It has been argued that this test should be broken up into two
dnl seperate tests, one for the resolver libraries, and one for the
dnl libraries necessary for using Sockets API. Unfortunately, the two
dnl are carefully intertwined and allowing the autoconf user to use
dnl them independantly potentially results in unfortunate ordering
dnl dependancies -- as such, such component macros would have to
dnl carefully use indirection and be aware if the other components were
dnl executed. Since other autoconf macros do not go to this trouble,
dnl and almost no applications use sockets without the resolver, this
dnl complexity has not been implemented.
dnl
dnl The check for libresolv is in case you are attempting to link
dnl statically and happen to have a libresolv.a lying around (and no
dnl libnsl.a).
dnl
AC_DEFUN(AC_LBL_LIBRARY_NET, [
    # Most operating systems have gethostbyname() in the default searched
    # libraries (i.e. libc):
    AC_CHECK_FUNC(gethostbyname, ,
	# Some OSes (eg. Solaris) place it in libnsl:
	AC_LBL_CHECK_LIB(nsl, gethostbyname, , 
	    # Some strange OSes (SINIX) have it in libsocket:
	    AC_LBL_CHECK_LIB(socket, gethostbyname, ,
		# Unfortunately libsocket sometimes depends on libnsl.
		# AC_CHECK_LIB's API is essentially broken so the
		# following ugliness is necessary:
		AC_LBL_CHECK_LIB(socket, gethostbyname,
		    LIBS="-lsocket -lnsl $LIBS",
		    AC_CHECK_LIB(resolv, gethostbyname),
		    -lnsl))))
    AC_CHECK_FUNC(socket, , AC_CHECK_LIB(socket, socket, ,
	AC_LBL_CHECK_LIB(socket, socket, LIBS="-lsocket -lnsl $LIBS", ,
	    -lnsl)))
    # DLPI needs putmsg under HPUX so test for -lstr while we're at it
    AC_CHECK_LIB(str, putmsg)
    ])