summaryrefslogtreecommitdiff
path: root/package/etrax-tools/src/e100boot/libpcap-0.4/aclocal.m4
diff options
context:
space:
mode:
Diffstat (limited to 'package/etrax-tools/src/e100boot/libpcap-0.4/aclocal.m4')
-rw-r--r--package/etrax-tools/src/e100boot/libpcap-0.4/aclocal.m4706
1 files changed, 706 insertions, 0 deletions
diff --git a/package/etrax-tools/src/e100boot/libpcap-0.4/aclocal.m4 b/package/etrax-tools/src/e100boot/libpcap-0.4/aclocal.m4
new file mode 100644
index 000000000..085f9fe18
--- /dev/null
+++ b/package/etrax-tools/src/e100boot/libpcap-0.4/aclocal.m4
@@ -0,0 +1,706 @@
+dnl @(#) $Header: /usr/local/cvs/linux/tools/build/e100boot/libpcap-0.4/aclocal.m4,v 1.1 1999/08/26 10:05:19 johana Exp $ (LBL)
+dnl
+dnl Copyright (c) 1995, 1996, 1997, 1998
+dnl The Regents of the University of California. All rights reserved.
+dnl
+dnl Redistribution and use in source and binary forms, with or without
+dnl modification, are permitted provided that: (1) source code distributions
+dnl retain the above copyright notice and this paragraph in its entirety, (2)
+dnl distributions including binary code include the above copyright notice and
+dnl this paragraph in its entirety in the documentation or other materials
+dnl provided with the distribution, and (3) all advertising materials mentioning
+dnl features or use of this software display the following acknowledgement:
+dnl ``This product includes software developed by the University of California,
+dnl Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+dnl the University nor the names of its contributors may be used to endorse
+dnl or promote products derived from this software without specific prior
+dnl written permission.
+dnl THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+dnl WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+dnl MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+dnl
+dnl LBL autoconf macros
+dnl
+
+dnl
+dnl Determine which compiler we're using (cc or gcc)
+dnl If using gcc, determine the version number
+dnl If using cc, require that it support ansi prototypes
+dnl If using gcc, use -O2 (otherwise use -O)
+dnl If using cc, explicitly specify /usr/local/include
+dnl
+dnl usage:
+dnl
+dnl AC_LBL_C_INIT(copt, incls)
+dnl
+dnl results:
+dnl
+dnl $1 (copt set)
+dnl $2 (incls set)
+dnl CC
+dnl LDFLAGS
+dnl ac_cv_lbl_gcc_vers
+dnl LBL_CFLAGS
+dnl
+AC_DEFUN(AC_LBL_C_INIT,
+ [AC_PREREQ(2.12)
+ AC_BEFORE([$0], [AC_PROG_CC])
+ AC_BEFORE([$0], [AC_LBL_FIXINCLUDES])
+ AC_BEFORE([$0], [AC_LBL_DEVEL])
+ AC_ARG_WITH(gcc, [ --without-gcc don't use gcc])
+ $1="-O"
+ $2=""
+ if test "${srcdir}" != "." ; then
+ $2="-I\$\(srcdir\)"
+ fi
+ if test "${CFLAGS+set}" = set; then
+ LBL_CFLAGS="$CFLAGS"
+ fi
+ if test -z "$CC" ; then
+ case "$target_os" in
+
+ bsdi*)
+ AC_CHECK_PROG(SHLICC2, shlicc2, yes, no)
+ if test $SHLICC2 = yes ; then
+ CC=shlicc2
+ export CC
+ fi
+ ;;
+ esac
+ fi
+ if test -z "$CC" -a "$with_gcc" = no ; then
+ CC=cc
+ export CC
+ fi
+ AC_PROG_CC
+ if test "$GCC" = yes ; then
+ if test "$SHLICC2" = yes ; then
+ ac_cv_lbl_gcc_vers=2
+ $1="-O2"
+ else
+ AC_MSG_CHECKING(gcc version)
+ AC_CACHE_VAL(ac_cv_lbl_gcc_vers,
+ ac_cv_lbl_gcc_vers=`$CC -v 2>&1 | \
+ sed -e '/^gcc version /!d' \
+ -e 's/^gcc version //' \
+ -e 's/ .*//' -e 's/^[[[^0-9]]]*//' \
+ -e 's/\..*//'`)
+ AC_MSG_RESULT($ac_cv_lbl_gcc_vers)
+ if test $ac_cv_lbl_gcc_vers -gt 1 ; then
+ $1="-O2"
+ fi
+ fi
+ else
+ AC_MSG_CHECKING(that $CC handles ansi prototypes)
+ AC_CACHE_VAL(ac_cv_lbl_cc_ansi_prototypes,
+ AC_TRY_COMPILE(
+ [#include <sys/types.h>],
+ [int frob(int, char *)],
+ ac_cv_lbl_cc_ansi_prototypes=yes,
+ ac_cv_lbl_cc_ansi_prototypes=no))
+ AC_MSG_RESULT($ac_cv_lbl_cc_ansi_prototypes)
+ if test $ac_cv_lbl_cc_ansi_prototypes = no ; then
+ case "$target_os" in
+
+ hpux*)
+ AC_MSG_CHECKING(for HP-UX ansi compiler ($CC -Aa -D_HPUX_SOURCE))
+ savedcflags="$CFLAGS"
+ CFLAGS="-Aa -D_HPUX_SOURCE $CFLAGS"
+ AC_CACHE_VAL(ac_cv_lbl_cc_hpux_cc_aa,
+ AC_TRY_COMPILE(
+ [#include <sys/types.h>],
+ [int frob(int, char *)],
+ ac_cv_lbl_cc_hpux_cc_aa=yes,
+ ac_cv_lbl_cc_hpux_cc_aa=no))
+ AC_MSG_RESULT($ac_cv_lbl_cc_hpux_cc_aa)
+ if test $ac_cv_lbl_cc_hpux_cc_aa = no ; then
+ AC_MSG_ERROR(see the INSTALL doc for more info)
+ fi
+ CFLAGS="$savedcflags"
+ V_CCOPT="-Aa $V_CCOPT"
+ AC_DEFINE(_HPUX_SOURCE)
+ ;;
+
+ *)
+ AC_MSG_ERROR(see the INSTALL doc for more info)
+ ;;
+ esac
+ fi
+ $2="$$2 -I/usr/local/include"
+ LDFLAGS="$LDFLAGS -L/usr/local/lib"
+
+ case "$target_os" in
+
+ irix*)
+ V_CCOPT="$V_CCOPT -xansi -signed -g3"
+ ;;
+
+ osf*)
+ V_CCOPT="$V_CCOPT -std1 -g3"
+ ;;
+
+ ultrix*)
+ AC_MSG_CHECKING(that Ultrix $CC hacks const in prototypes)
+ AC_CACHE_VAL(ac_cv_lbl_cc_const_proto,
+ AC_TRY_COMPILE(
+ [#include <sys/types.h>],
+ [struct a { int b; };
+ void c(const struct a *)],
+ ac_cv_lbl_cc_const_proto=yes,
+ ac_cv_lbl_cc_const_proto=no))
+ AC_MSG_RESULT($ac_cv_lbl_cc_const_proto)
+ if test $ac_cv_lbl_cc_const_proto = no ; then
+ AC_DEFINE(const,)
+ fi
+ ;;
+ esac
+ fi
+])
+
+dnl
+dnl Use pfopen.c if available and pfopen() not in standard libraries
+dnl Require libpcap
+dnl Look for libpcap in ..
+dnl Use the installed libpcap if there is no local version
+dnl
+dnl usage:
+dnl
+dnl AC_LBL_LIBPCAP(pcapdep, incls)
+dnl
+dnl results:
+dnl
+dnl $1 (pcapdep set)
+dnl $2 (incls appended)
+dnl LIBS
+dnl LBL_LIBS
+dnl
+AC_DEFUN(AC_LBL_LIBPCAP,
+ [AC_REQUIRE([AC_LBL_LIBRARY_NET])
+ dnl
+ dnl save a copy before locating libpcap.a
+ dnl
+ LBL_LIBS="$LIBS"
+ pfopen=/usr/examples/packetfilter/pfopen.c
+ if test -f $pfopen ; then
+ AC_CHECK_FUNCS(pfopen)
+ if test $ac_cv_func_pfopen = "no" ; then
+ AC_MSG_RESULT(Using $pfopen)
+ LIBS="$LIBS $pfopen"
+ fi
+ fi
+ AC_MSG_CHECKING(for local pcap library)
+ libpcap=FAIL
+ lastdir=FAIL
+ places=`ls .. | sed -e 's,/$,,' -e 's,^,../,' | \
+ egrep '/libpcap-[[0-9]]*\.[[0-9]]*(\.[[0-9]]*)?([[ab]][[0-9]]*)?$'`
+ for dir in $places ../libpcap libpcap ; do
+ basedir=`echo $dir | sed -e 's/[[ab]][[0-9]]*$//'`
+ if test $lastdir = $basedir ; then
+ dnl skip alphas when an actual release is present
+ continue;
+ fi
+ lastdir=$dir
+ if test -r $dir/pcap.c ; then
+ libpcap=$dir/libpcap.a
+ d=$dir
+ dnl continue and select the last one that exists
+ fi
+ done
+ if test $libpcap = FAIL ; then
+ AC_MSG_RESULT(not found)
+ AC_CHECK_LIB(pcap, main, libpcap="-lpcap")
+ if test $libpcap = FAIL ; then
+ AC_MSG_ERROR(see the INSTALL doc for more info)
+ fi
+ else
+ $1=$libpcap
+ $2="-I$d $$2"
+ AC_MSG_RESULT($libpcap)
+ fi
+ LIBS="$libpcap $LIBS"
+ case "$target_os" in
+
+ aix*)
+ pseexe="/lib/pse.exp"
+ AC_MSG_CHECKING(for $pseexe)
+ if test -f $pseexe ; then
+ AC_MSG_RESULT(yes)
+ LIBS="$LIBS -I:$pseexe"
+ fi
+ ;;
+ esac])
+
+dnl
+dnl Define RETSIGTYPE and RETSIGVAL
+dnl
+dnl usage:
+dnl
+dnl AC_LBL_TYPE_SIGNAL
+dnl
+dnl results:
+dnl
+dnl RETSIGTYPE (defined)
+dnl RETSIGVAL (defined)
+dnl
+AC_DEFUN(AC_LBL_TYPE_SIGNAL,
+ [AC_BEFORE([$0], [AC_LBL_LIBPCAP])
+ AC_TYPE_SIGNAL
+ if test "$ac_cv_type_signal" = void ; then
+ AC_DEFINE(RETSIGVAL,)
+ else
+ AC_DEFINE(RETSIGVAL,(0))
+ fi
+ case "$target_os" in
+
+ irix*)
+ AC_DEFINE(_BSD_SIGNALS)
+ ;;
+
+ *)
+ dnl prefer sigset() to sigaction()
+ AC_CHECK_FUNCS(sigset)
+ if test $ac_cv_func_sigset = no ; then
+ AC_CHECK_FUNCS(sigaction)
+ fi
+ ;;
+ esac])
+
+dnl
+dnl If using gcc, make sure we have ANSI ioctl definitions
+dnl
+dnl usage:
+dnl
+dnl AC_LBL_FIXINCLUDES
+dnl
+AC_DEFUN(AC_LBL_FIXINCLUDES,
+ [if test "$GCC" = yes ; then
+ AC_MSG_CHECKING(for ANSI ioctl definitions)
+ AC_CACHE_VAL(ac_cv_lbl_gcc_fixincludes,
+ AC_TRY_COMPILE(
+ [/*
+ * This generates a "duplicate case value" when fixincludes
+ * has not be run.
+ */
+# include <sys/types.h>
+# include <sys/time.h>
+# include <sys/ioctl.h>
+# ifdef HAVE_SYS_IOCCOM_H
+# include <sys/ioccom.h>
+# endif],
+ [switch (0) {
+ case _IO('A', 1):;
+ case _IO('B', 1):;
+ }],
+ ac_cv_lbl_gcc_fixincludes=yes,
+ ac_cv_lbl_gcc_fixincludes=no))
+ AC_MSG_RESULT($ac_cv_lbl_gcc_fixincludes)
+ if test $ac_cv_lbl_gcc_fixincludes = no ; then
+ # Don't cache failure
+ unset ac_cv_lbl_gcc_fixincludes
+ AC_MSG_ERROR(see the INSTALL for more info)
+ fi
+ fi])
+
+dnl
+dnl Check for flex, default to lex
+dnl Require flex 2.4 or higher
+dnl Check for bison, default to yacc
+dnl Default to lex/yacc if both flex and bison are not available
+dnl Define the yy prefix string if using flex and bison
+dnl
+dnl usage:
+dnl
+dnl AC_LBL_LEX_AND_YACC(lex, yacc, yyprefix)
+dnl
+dnl results:
+dnl
+dnl $1 (lex set)
+dnl $2 (yacc appended)
+dnl $3 (optional flex and bison -P prefix)
+dnl
+AC_DEFUN(AC_LBL_LEX_AND_YACC,
+ [AC_ARG_WITH(flex, [ --without-flex don't use flex])
+ AC_ARG_WITH(bison, [ --without-bison don't use bison])
+ if test "$with_flex" = no ; then
+ $1=lex
+ else
+ AC_CHECK_PROGS($1, flex, lex)
+ fi
+ if test "$$1" = flex ; then
+ # The -V flag was added in 2.4
+ AC_MSG_CHECKING(for flex 2.4 or higher)
+ AC_CACHE_VAL(ac_cv_lbl_flex_v24,
+ if flex -V >/dev/null 2>&1; then
+ ac_cv_lbl_flex_v24=yes
+ else
+ ac_cv_lbl_flex_v24=no
+ fi)
+ AC_MSG_RESULT($ac_cv_lbl_flex_v24)
+ if test $ac_cv_lbl_flex_v24 = no ; then
+ s="2.4 or higher required"
+ AC_MSG_WARN(ignoring obsolete flex executable ($s))
+ $1=lex
+ fi
+ fi
+ if test "$with_bison" = no ; then
+ $2=yacc
+ else
+ AC_CHECK_PROGS($2, bison, yacc)
+ fi
+ if test "$$2" = bison ; then
+ $2="$$2 -y"
+ fi
+ if test "$$1" != lex -a "$$2" = yacc -o "$$1" = lex -a "$$2" != yacc ; then
+ AC_MSG_WARN(don't have both flex and bison; reverting to lex/yacc)
+ $1=lex
+ $2=yacc
+ fi
+ if test "$$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 (jhawk@mit.edu)
+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)
+ ])