1 dnl @(#) $Header: /tcpdump/master/tcpdump/aclocal.m4,v 1.116 2008-09-25 21:45:50 guy Exp $ (LBL)
3 dnl Copyright (c) 1995, 1996, 1997, 1998
4 dnl The Regents of the University of California. All rights reserved.
6 dnl Redistribution and use in source and binary forms, with or without
7 dnl modification, are permitted provided that: (1) source code distributions
8 dnl retain the above copyright notice and this paragraph in its entirety, (2)
9 dnl distributions including binary code include the above copyright notice and
10 dnl this paragraph in its entirety in the documentation or other materials
11 dnl provided with the distribution, and (3) all advertising materials mentioning
12 dnl features or use of this software display the following acknowledgement:
13 dnl ``This product includes software developed by the University of California,
14 dnl Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
15 dnl the University nor the names of its contributors may be used to endorse
16 dnl or promote products derived from this software without specific prior
17 dnl written permission.
18 dnl THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
19 dnl WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
20 dnl MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22 dnl LBL autoconf macros
26 dnl Do whatever AC_LBL_C_INIT work is necessary before using AC_PROG_CC.
28 dnl It appears that newer versions of autoconf (2.64 and later) will,
29 dnl if you use AC_TRY_COMPILE in a macro, stick AC_PROG_CC at the
30 dnl beginning of the macro, even if the macro itself calls AC_PROG_CC.
31 dnl See the "Prerequisite Macros" and "Expanded Before Required" sections
32 dnl in the Autoconf documentation.
34 dnl This causes a steaming heap of fail in our case, as we were, in
35 dnl AC_LBL_C_INIT, doing the tests we now do in AC_LBL_C_INIT_BEFORE_CC,
36 dnl calling AC_PROG_CC, and then doing the tests we now do in
37 dnl AC_LBL_C_INIT. Now, we run AC_LBL_C_INIT_BEFORE_CC, AC_PROG_CC,
38 dnl and AC_LBL_C_INIT at the top level.
40 AC_DEFUN(AC_LBL_C_INIT_BEFORE_CC,
42 AC_BEFORE([$0], [AC_LBL_C_INIT])
43 AC_BEFORE([$0], [AC_PROG_CC])
44 AC_BEFORE([$0], [AC_LBL_FIXINCLUDES])
45 AC_BEFORE([$0], [AC_LBL_DEVEL])
46 AC_ARG_WITH(gcc, [ --without-gcc don't use gcc])
49 if test "${srcdir}" != "." ; then
52 if test "${CFLAGS+set}" = set; then
55 if test -z "$CC" ; then
59 AC_CHECK_PROG(SHLICC2, shlicc2, yes, no)
60 if test $SHLICC2 = yes ; then
67 if test -z "$CC" -a "$with_gcc" = no ; then
74 dnl Determine which compiler we're using (cc or gcc)
75 dnl If using gcc, determine the version number
76 dnl If using cc, require that it support ansi prototypes
77 dnl If using gcc, use -O2 (otherwise use -O)
78 dnl If using cc, explicitly specify /usr/local/include
82 dnl AC_LBL_C_INIT(copt, incls)
90 dnl ac_cv_lbl_gcc_vers
93 AC_DEFUN(AC_LBL_C_INIT,
95 AC_BEFORE([$0], [AC_LBL_FIXINCLUDES])
96 AC_BEFORE([$0], [AC_LBL_DEVEL])
97 AC_BEFORE([$0], [AC_LBL_SHLIBS_INIT])
98 if test "$GCC" = yes ; then
99 if test "$SHLICC2" = yes ; then
103 AC_MSG_CHECKING(gcc version)
104 AC_CACHE_VAL(ac_cv_lbl_gcc_vers,
105 ac_cv_lbl_gcc_vers=`$CC -v 2>&1 | \
106 sed -e '/^gcc version /!d' \
107 -e 's/^gcc version //' \
108 -e 's/ .*//' -e 's/^[[[^0-9]]]*//' \
110 AC_MSG_RESULT($ac_cv_lbl_gcc_vers)
111 if test $ac_cv_lbl_gcc_vers -gt 1 ; then
116 AC_MSG_CHECKING(that $CC handles ansi prototypes)
117 AC_CACHE_VAL(ac_cv_lbl_cc_ansi_prototypes,
119 [#include <sys/types.h>],
120 [int frob(int, char *)],
121 ac_cv_lbl_cc_ansi_prototypes=yes,
122 ac_cv_lbl_cc_ansi_prototypes=no))
123 AC_MSG_RESULT($ac_cv_lbl_cc_ansi_prototypes)
124 if test $ac_cv_lbl_cc_ansi_prototypes = no ; then
128 AC_MSG_CHECKING(for HP-UX ansi compiler ($CC -Aa -D_HPUX_SOURCE))
129 savedcflags="$CFLAGS"
130 CFLAGS="-Aa -D_HPUX_SOURCE $CFLAGS"
131 AC_CACHE_VAL(ac_cv_lbl_cc_hpux_cc_aa,
133 [#include <sys/types.h>],
134 [int frob(int, char *)],
135 ac_cv_lbl_cc_hpux_cc_aa=yes,
136 ac_cv_lbl_cc_hpux_cc_aa=no))
137 AC_MSG_RESULT($ac_cv_lbl_cc_hpux_cc_aa)
138 if test $ac_cv_lbl_cc_hpux_cc_aa = no ; then
139 AC_MSG_ERROR(see the INSTALL doc for more info)
141 CFLAGS="$savedcflags"
143 AC_DEFINE(_HPUX_SOURCE,1,[needed on HP-UX])
147 AC_MSG_CHECKING(for ansi mode in DEC compiler ($CC -std1))
148 savedcflags="$CFLAGS"
150 AC_CACHE_VAL(ac_cv_lbl_cc_osf1_cc_std1,
152 [#include <sys/types.h>],
153 [int frob(int, char *)],
154 ac_cv_lbl_cc_osf1_cc_std1=yes,
155 ac_cv_lbl_cc_osf1_cc_std1=no))
156 AC_MSG_RESULT($ac_cv_lbl_cc_osf1_cc_std1)
157 if test $ac_cv_lbl_cc_osf1_cc_std1 = no ; then
158 AC_MSG_ERROR(see the INSTALL doc for more info)
160 CFLAGS="$savedcflags"
165 AC_MSG_ERROR(see the INSTALL doc for more info)
169 $2="$$2 -I/usr/local/include"
170 LDFLAGS="$LDFLAGS -L/usr/local/lib"
175 $1="$$1 -xansi -signed -O"
180 # Presumed to be DEC OSF/1, Digital UNIX, or
187 AC_MSG_CHECKING(that Ultrix $CC hacks const in prototypes)
188 AC_CACHE_VAL(ac_cv_lbl_cc_const_proto,
190 [#include <sys/types.h>],
191 [struct a { int b; };
192 void c(const struct a *)],
193 ac_cv_lbl_cc_const_proto=yes,
194 ac_cv_lbl_cc_const_proto=no))
195 AC_MSG_RESULT($ac_cv_lbl_cc_const_proto)
196 if test $ac_cv_lbl_cc_const_proto = no ; then
198 [to handle Ultrix compilers that don't support const in prototypes])
206 # Try compiling a sample of the type of code that appears in
207 # gencode.c with "inline", "__inline__", and "__inline".
209 # Autoconf's AC_C_INLINE, at least in autoconf 2.13, isn't good enough,
210 # as it just tests whether a function returning "int" can be inlined;
211 # at least some versions of HP's C compiler can inline that, but can't
212 # inline a function that returns a struct pointer.
214 # Make sure we use the V_CCOPT flags, because some of those might
217 AC_DEFUN(AC_LBL_C_INLINE,
218 [AC_MSG_CHECKING(for inline)
219 save_CFLAGS="$CFLAGS"
221 AC_CACHE_VAL(ac_cv_lbl_inline, [
224 for ac_lbl_inline in inline __inline__ __inline
227 [#define inline $ac_lbl_inline
228 static inline struct iltest *foo(void);
234 static inline struct iltest *
237 static struct iltest xxx;
240 }],,ac_lbl_cc_inline=yes,)
241 if test "$ac_lbl_cc_inline" = yes ; then
245 if test "$ac_lbl_cc_inline" = yes ; then
246 ac_cv_lbl_inline=$ac_lbl_inline
248 CFLAGS="$save_CFLAGS"
249 if test ! -z "$ac_cv_lbl_inline" ; then
250 AC_MSG_RESULT($ac_cv_lbl_inline)
254 AC_DEFINE_UNQUOTED(inline, $ac_cv_lbl_inline, [Define as token for inline if inlining supported])])
257 dnl Use pfopen.c if available and pfopen() not in standard libraries
259 dnl Look for libpcap in ..
260 dnl Use the installed libpcap if there is no local version
264 dnl AC_LBL_LIBPCAP(pcapdep, incls)
269 dnl $2 (incls appended)
273 AC_DEFUN(AC_LBL_LIBPCAP,
274 [AC_REQUIRE([AC_LBL_LIBRARY_NET])
276 dnl save a copy before locating libpcap.a
279 pfopen=/usr/examples/packetfilter/pfopen.c
280 if test -f $pfopen ; then
281 AC_CHECK_FUNCS(pfopen)
282 if test $ac_cv_func_pfopen = "no" ; then
283 AC_MSG_RESULT(Using $pfopen)
287 AC_MSG_CHECKING(for local pcap library)
290 places=`ls $srcdir/.. | sed -e 's,/$,,' -e "s,^,$srcdir/../," | \
291 egrep '/libpcap-[[0-9]]+\.[[0-9]]+(\.[[0-9]]*)?([[ab]][[0-9]]*|-PRE-GIT)?$'`
292 for dir in $places $srcdir/../libpcap $srcdir/libpcap ; do
293 basedir=`echo $dir | sed -e 's/[[ab]][[0-9]]*$//' | \
294 sed -e 's/-PRE-GIT$//' `
295 if test $lastdir = $basedir ; then
296 dnl skip alphas when an actual release is present
300 if test -r $dir/libpcap.a ; then
301 libpcap=$dir/libpcap.a
303 dnl continue and select the last one that exists
306 if test $libpcap = FAIL ; then
307 AC_MSG_RESULT(not found)
310 # Look for pcap-config.
312 AC_PATH_PROG(PCAP_CONFIG, pcap-config)
313 if test -n "$PCAP_CONFIG" ; then
315 # Found - use it to get the include flags for
316 # libpcap and the flags to link with libpcap.
318 $2="`\"$PCAP_CONFIG\" --cflags` $$2"
319 libpcap="`\"$PCAP_CONFIG\" --libs`"
322 # Not found; look for pcap.
324 AC_CHECK_LIB(pcap, main, libpcap="-lpcap")
325 if test $libpcap = FAIL ; then
326 AC_MSG_ERROR(see the INSTALL doc for more info)
329 dnl Some versions of Red Hat Linux put "pcap.h" in
330 dnl "/usr/include/pcap"; had the LBL folks done so,
331 dnl that would have been a good idea, but for
332 dnl the Red Hat folks to do so just breaks source
333 dnl compatibility with other systems.
335 dnl We work around this by assuming that, as we didn't
336 dnl find a local libpcap, libpcap is in /usr/lib or
337 dnl /usr/local/lib and that the corresponding header
338 dnl file is under one of those directories; if we don't
339 dnl find it in either of those directories, we check to
340 dnl see if it's in a "pcap" subdirectory of them and,
341 dnl if so, add that subdirectory to the "-I" list.
343 dnl (We now also put pcap.h in /usr/include/pcap, but we
344 dnl leave behind a /usr/include/pcap.h that includes it,
345 dnl so you can still just include <pcap.h>.)
347 AC_MSG_CHECKING(for extraneous pcap header directories)
348 if test \( ! -r /usr/local/include/pcap.h \) -a \
349 \( ! -r /usr/include/pcap.h \); then
350 if test -r /usr/local/include/pcap/pcap.h; then
351 d="/usr/local/include/pcap"
352 elif test -r /usr/include/pcap/pcap.h; then
353 d="/usr/include/pcap"
356 if test -z "$d" ; then
357 AC_MSG_RESULT(not found)
360 AC_MSG_RESULT(found -- -I$d added)
365 places=`ls $srcdir/.. | sed -e 's,/$,,' -e "s,^,$srcdir/../," | \
366 egrep '/libpcap-[[0-9]]*.[[0-9]]*(.[[0-9]]*)?([[ab]][[0-9]]*)?$'`
367 if test -r $d/pcap.h; then
369 elif test -r $places/pcap.h; then
372 AC_MSG_ERROR(cannot find pcap.h, see INSTALL)
374 AC_MSG_RESULT($libpcap)
375 AC_PATH_PROG(PCAP_CONFIG, pcap-config,, $d)
376 if test -n "$PCAP_CONFIG"; then
378 # The libpcap directory has a pcap-config script.
379 # Use it to get any additioal libraries needed
380 # to link with the libpcap archive library in
383 libpcap="$libpcap `\"$PCAP_CONFIG\" --additional-libs --static`"
386 LIBS="$libpcap $LIBS"
387 if ! test -n "$PCAP_CONFIG" ; then
389 # We don't have pcap-config; find out any additional link flags
390 # we need. (If we have pcap-config, we assume it tells us what
397 # If libpcap is DLPI-based, we have to use /lib/pse.exp if
398 # present, as we use the STREAMS routines.
400 # (XXX - true only if we're linking with a static libpcap?)
402 pseexe="/lib/pse.exp"
403 AC_MSG_CHECKING(for $pseexe)
404 if test -f $pseexe ; then
406 LIBS="$LIBS -I:$pseexe"
410 # If libpcap is BPF-based, we need "-lodm" and "-lcfg", as
411 # we use them to load the BPF module.
413 # (XXX - true only if we're linking with a static libpcap?)
415 LIBS="$LIBS -lodm -lcfg"
421 dnl Check for "pcap_list_datalinks()", "pcap_set_datalink()",
422 dnl and "pcap_datalink_name_to_val()", and use substitute versions
423 dnl if they're not present.
425 AC_CHECK_FUNC(pcap_list_datalinks,
426 AC_DEFINE(HAVE_PCAP_LIST_DATALINKS),
430 AC_CHECK_FUNC(pcap_set_datalink,
431 AC_DEFINE(HAVE_PCAP_SET_DATALINK))
432 AC_CHECK_FUNC(pcap_datalink_name_to_val,
434 AC_DEFINE(HAVE_PCAP_DATALINK_NAME_TO_VAL)
435 AC_CHECK_FUNC(pcap_datalink_val_to_description,
436 AC_DEFINE(HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION),
446 dnl Check for "pcap_breakloop()"; you can't substitute for it if
447 dnl it's absent (it has hooks into the live capture routines),
448 dnl so just define the HAVE_ value if it's there.
450 AC_CHECK_FUNCS(pcap_breakloop)
453 dnl Check for "pcap_dump_ftell()" and use a substitute version
454 dnl if it's not present.
455 AC_CHECK_FUNC(pcap_dump_ftell,
456 AC_DEFINE(HAVE_PCAP_DUMP_FTELL),
458 AC_LIBOBJ(pcap_dump_ftell)
463 dnl Define RETSIGTYPE and RETSIGVAL
467 dnl AC_LBL_TYPE_SIGNAL
471 dnl RETSIGTYPE (defined)
472 dnl RETSIGVAL (defined)
474 AC_DEFUN(AC_LBL_TYPE_SIGNAL,
475 [AC_BEFORE([$0], [AC_LBL_LIBPCAP])
477 if test "$ac_cv_type_signal" = void ; then
478 AC_DEFINE(RETSIGVAL,[],[return value of signal handlers])
480 AC_DEFINE(RETSIGVAL,(0),[return value of signal handlers])
485 AC_DEFINE(_BSD_SIGNALS,1,[get BSD semantics on Irix])
489 dnl prefer sigaction() to sigset()
490 AC_CHECK_FUNCS(sigaction)
491 if test $ac_cv_func_sigaction = no ; then
492 AC_CHECK_FUNCS(sigset)
498 dnl If using gcc, make sure we have ANSI ioctl definitions
502 dnl AC_LBL_FIXINCLUDES
504 AC_DEFUN(AC_LBL_FIXINCLUDES,
505 [if test "$GCC" = yes ; then
506 AC_MSG_CHECKING(for ANSI ioctl definitions)
507 AC_CACHE_VAL(ac_cv_lbl_gcc_fixincludes,
510 * This generates a "duplicate case value" when fixincludes
513 # include <sys/types.h>
514 # include <sys/time.h>
515 # include <sys/ioctl.h>
516 # ifdef HAVE_SYS_IOCCOM_H
517 # include <sys/ioccom.h>
523 ac_cv_lbl_gcc_fixincludes=yes,
524 ac_cv_lbl_gcc_fixincludes=no))
525 AC_MSG_RESULT($ac_cv_lbl_gcc_fixincludes)
526 if test $ac_cv_lbl_gcc_fixincludes = no ; then
527 # Don't cache failure
528 unset ac_cv_lbl_gcc_fixincludes
529 AC_MSG_ERROR(see the INSTALL for more info)
534 dnl Checks to see if union wait is used with WEXITSTATUS()
538 dnl AC_LBL_UNION_WAIT
542 dnl DECLWAITSTATUS (defined)
544 AC_DEFUN(AC_LBL_UNION_WAIT,
545 [AC_MSG_CHECKING(if union wait is used)
546 AC_CACHE_VAL(ac_cv_lbl_union_wait,
548 # include <sys/types.h>
549 # include <sys/wait.h>],
551 u_int i = WEXITSTATUS(status);
552 u_int j = waitpid(0, &status, 0);],
553 ac_cv_lbl_union_wait=no,
554 ac_cv_lbl_union_wait=yes))
555 AC_MSG_RESULT($ac_cv_lbl_union_wait)
556 if test $ac_cv_lbl_union_wait = yes ; then
557 AC_DEFINE(DECLWAITSTATUS,union wait,[type for wait])
559 AC_DEFINE(DECLWAITSTATUS,int,[type for wait])
563 dnl Checks to see if the sockaddr struct has the 4.4 BSD sa_len member
567 dnl AC_LBL_SOCKADDR_SA_LEN
571 dnl HAVE_SOCKADDR_SA_LEN (defined)
573 AC_DEFUN(AC_LBL_SOCKADDR_SA_LEN,
574 [AC_MSG_CHECKING(if sockaddr struct has the sa_len member)
575 AC_CACHE_VAL(ac_cv_lbl_sockaddr_has_sa_len,
577 # include <sys/types.h>
578 # include <sys/socket.h>],
579 [u_int i = sizeof(((struct sockaddr *)0)->sa_len)],
580 ac_cv_lbl_sockaddr_has_sa_len=yes,
581 ac_cv_lbl_sockaddr_has_sa_len=no))
582 AC_MSG_RESULT($ac_cv_lbl_sockaddr_has_sa_len)
583 if test $ac_cv_lbl_sockaddr_has_sa_len = yes ; then
584 AC_DEFINE(HAVE_SOCKADDR_SA_LEN,1,[if struct sockaddr has the sa_len member])
588 dnl Checks to see if -R is used
592 dnl AC_LBL_HAVE_RUN_PATH
596 dnl ac_cv_lbl_have_run_path (yes or no)
598 AC_DEFUN(AC_LBL_HAVE_RUN_PATH,
599 [AC_MSG_CHECKING(for ${CC-cc} -R)
600 AC_CACHE_VAL(ac_cv_lbl_have_run_path,
601 [echo 'main(){}' > conftest.c
602 ${CC-cc} -o conftest conftest.c -R/a1/b2/c3 >conftest.out 2>&1
603 if test ! -s conftest.out ; then
604 ac_cv_lbl_have_run_path=yes
606 ac_cv_lbl_have_run_path=no
609 AC_MSG_RESULT($ac_cv_lbl_have_run_path)
613 dnl Check whether a given format can be used to print 64-bit integers
615 AC_DEFUN(AC_LBL_CHECK_64BIT_FORMAT,
617 AC_MSG_CHECKING([whether %$1x can be used to format 64-bit integers])
622 # ifdef HAVE_INTTYPES_H
623 #include <inttypes.h>
625 # ifdef HAVE_SYS_BITYPES_H
626 #include <sys/bitypes.h>
629 #include <sys/types.h>
635 sprintf(strbuf, "%016$1x", t << 32);
636 if (strcmp(strbuf, "0000000100000000") == 0)
644 AC_DEFINE(PRId64, "$1d")
645 AC_DEFINE(PRIo64, "$1o")
646 AC_DEFINE(PRIx64, "$1x")
647 AC_DEFINE(PRIu64, "$1u")
657 dnl Checks to see if unaligned memory accesses fail
661 dnl AC_LBL_UNALIGNED_ACCESS
665 dnl LBL_ALIGN (DEFINED)
667 AC_DEFUN(AC_LBL_UNALIGNED_ACCESS,
668 [AC_MSG_CHECKING(if unaligned accesses fail)
669 AC_CACHE_VAL(ac_cv_lbl_unaligned_fail,
673 # These are CPU types where:
675 # the CPU faults on an unaligned access, but at least some
676 # OSes that support that CPU catch the fault and simulate
677 # the unaligned access (e.g., Alpha/{Digital,Tru64} UNIX) -
678 # the simulation is slow, so we don't want to use it;
680 # the CPU, I infer (from the old
682 # XXX: should also check that they don't do weird things (like on arm)
684 # comment) doesn't fault on unaligned accesses, but doesn't
685 # do a normal unaligned fetch, either (e.g., presumably, ARM);
687 # for whatever reason, the test program doesn't work
688 # (this has been claimed to be the case for several of those
689 # CPUs - I don't know what the problem is; the problem
690 # was reported as "the test program dumps core" for SuperH,
691 # but that's what the test program is *supposed* to do -
692 # it dumps core before it writes anything, so the test
693 # for an empty output file should find an empty output
694 # file and conclude that unaligned accesses don't work).
696 # This run-time test won't work if you're cross-compiling, so
697 # in order to support cross-compiling for a particular CPU,
698 # we have to wire in the list of CPU types anyway, as far as
699 # I know, so perhaps we should just have a set of CPUs on
700 # which we know it doesn't work, a set of CPUs on which we
701 # know it does work, and have the script just fail on other
702 # cpu types and update it when such a failure occurs.
704 alpha*|arm*|bfin*|hp*|mips*|sh*|sparc*|ia64|nv1)
705 ac_cv_lbl_unaligned_fail=yes
709 cat >conftest.c <<EOF
710 # include <sys/types.h>
711 # include <sys/wait.h>
713 unsigned char a[[5]] = { 1, 2, 3, 4, 5 };
718 /* avoid "core dumped" message */
724 pid = waitpid(pid, &status, 0);
727 exit(!WIFEXITED(status));
730 i = *(unsigned int *)&a[[1]];
735 ${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS \
736 conftest.c $LIBS >/dev/null 2>&1
737 if test ! -x conftest ; then
738 dnl failed to compile for some reason
739 ac_cv_lbl_unaligned_fail=yes
741 ./conftest >conftest.out
742 if test ! -s conftest.out ; then
743 ac_cv_lbl_unaligned_fail=yes
745 ac_cv_lbl_unaligned_fail=no
748 rm -f -r conftest* core core.conftest
751 AC_MSG_RESULT($ac_cv_lbl_unaligned_fail)
752 if test $ac_cv_lbl_unaligned_fail = yes ; then
753 AC_DEFINE(LBL_ALIGN,1,[if unaligned access fails])
757 dnl If using gcc and the file .devel exists:
758 dnl Compile with -g (if supported) and -Wall
759 dnl If using gcc 2 or later, do extra prototype checking and some other
761 dnl If an os prototype include exists, symlink os-proto.h to it
765 dnl AC_LBL_DEVEL(copt)
769 dnl $1 (copt appended)
770 dnl HAVE_OS_PROTO_H (defined)
771 dnl os-proto.h (symlinked)
773 AC_DEFUN(AC_LBL_DEVEL,
775 if test "${LBL_CFLAGS+set}" = set; then
776 $1="$$1 ${LBL_CFLAGS}"
778 if test -f .devel ; then
779 if test "$GCC" = yes ; then
780 if test "${LBL_CFLAGS+set}" != set; then
781 if test "$ac_cv_prog_cc_g" = yes ; then
785 if test $ac_cv_lbl_gcc_vers -gt 1 ; then
786 $1="$$1 -Wmissing-prototypes -Wstrict-prototypes -Wwrite-strings -Wpointer-arith -W"
793 V_CCOPT="$V_CCOPT -n32"
800 os=`echo $host_os | sed -e 's/\([[0-9]][[0-9]]*\)[[^0-9]].*$/\1/'`
802 if test -f $name ; then
803 ln -s $name os-proto.h
804 AC_DEFINE(HAVE_OS_PROTO_H, 1,
805 [if there's an os_proto.h for this platform, to use additional prototypes])
807 AC_MSG_WARN(can't find $name)
812 dnl Improved version of AC_CHECK_LIB
814 dnl Thanks to John Hawkinson (jhawk@mit.edu)
818 dnl AC_LBL_CHECK_LIB(LIBRARY, FUNCTION [, ACTION-IF-FOUND [,
819 dnl ACTION-IF-NOT-FOUND [, OTHER-LIBRARIES]]])
825 dnl XXX - "AC_LBL_LIBRARY_NET" was redone to use "AC_SEARCH_LIBS"
826 dnl rather than "AC_LBL_CHECK_LIB", so this isn't used any more.
827 dnl We keep it around for reference purposes in case it's ever
828 dnl useful in the future.
831 define(AC_LBL_CHECK_LIB,
832 [AC_MSG_CHECKING([for $2 in -l$1])
833 dnl Use a cache variable name containing the library, function
834 dnl name, and extra libraries to link with, because the test really is
835 dnl for library $1 defining function $2, when linked with potinal
836 dnl library $5, not just for library $1. Separate tests with the same
837 dnl $1 and different $2's or $5's may have different results.
838 ac_lib_var=`echo $1['_']$2['_']$5 | sed 'y%./+- %__p__%'`
839 AC_CACHE_VAL(ac_cv_lbl_lib_$ac_lib_var,
840 [ac_save_LIBS="$LIBS"
843 ifelse([$2], [main], , dnl Avoid conflicting decl of main.
844 [/* Override any gcc2 internal prototype to avoid an error. */
845 ]ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
849 [/* We use char because int might match the return type of a gcc2
850 builtin and then its argument prototype would still apply. */
854 eval "ac_cv_lbl_lib_$ac_lib_var=yes",
855 eval "ac_cv_lbl_lib_$ac_lib_var=no")
858 if eval "test \"`echo '$ac_cv_lbl_lib_'$ac_lib_var`\" = yes"; then
862 ac_tr_lib=HAVE_LIB`echo $1 | sed -e 's/[^a-zA-Z0-9_]/_/g' \
863 -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
865 AC_DEFINE_UNQUOTED($ac_tr_lib)
876 dnl AC_LBL_LIBRARY_NET
878 dnl This test is for network applications that need socket() and
879 dnl gethostbyname() -ish functions. Under Solaris, those applications
880 dnl need to link with "-lsocket -lnsl". Under IRIX, they need to link
881 dnl with "-lnsl" but should *not* link with "-lsocket" because
882 dnl libsocket.a breaks a number of things (for instance:
883 dnl gethostbyname() under IRIX 5.2, and snoop sockets under most
884 dnl versions of IRIX).
886 dnl Unfortunately, many application developers are not aware of this,
887 dnl and mistakenly write tests that cause -lsocket to be used under
888 dnl IRIX. It is also easy to write tests that cause -lnsl to be used
889 dnl under operating systems where neither are necessary (or useful),
890 dnl such as SunOS 4.1.4, which uses -lnsl for TLI.
892 dnl This test exists so that every application developer does not test
893 dnl this in a different, and subtly broken fashion.
895 dnl It has been argued that this test should be broken up into two
896 dnl seperate tests, one for the resolver libraries, and one for the
897 dnl libraries necessary for using Sockets API. Unfortunately, the two
898 dnl are carefully intertwined and allowing the autoconf user to use
899 dnl them independantly potentially results in unfortunate ordering
900 dnl dependancies -- as such, such component macros would have to
901 dnl carefully use indirection and be aware if the other components were
902 dnl executed. Since other autoconf macros do not go to this trouble,
903 dnl and almost no applications use sockets without the resolver, this
904 dnl complexity has not been implemented.
906 dnl The check for libresolv is in case you are attempting to link
907 dnl statically and happen to have a libresolv.a lying around (and no
910 AC_DEFUN(AC_LBL_LIBRARY_NET, [
911 # Most operating systems have gethostbyname() in the default searched
912 # libraries (i.e. libc):
913 # Some OSes (eg. Solaris) place it in libnsl
914 # Some strange OSes (SINIX) have it in libsocket:
915 AC_SEARCH_LIBS(gethostbyname, nsl socket resolv)
916 # Unfortunately libsocket sometimes depends on libnsl and
917 # AC_SEARCH_LIBS isn't up to the task of handling dependencies like this.
918 if test "$ac_cv_search_gethostbyname" = "no"
920 AC_CHECK_LIB(socket, gethostbyname,
921 LIBS="-lsocket -lnsl $LIBS", , -lnsl)
923 AC_SEARCH_LIBS(socket, socket, ,
924 AC_CHECK_LIB(socket, socket, LIBS="-lsocket -lnsl $LIBS", , -lnsl))
925 # DLPI needs putmsg under HPUX so test for -lstr while we're at it
926 AC_SEARCH_LIBS(putmsg, str)
929 dnl Copyright (c) 1999 WIDE Project. All rights reserved.
931 dnl Redistribution and use in source and binary forms, with or without
932 dnl modification, are permitted provided that the following conditions
934 dnl 1. Redistributions of source code must retain the above copyright
935 dnl notice, this list of conditions and the following disclaimer.
936 dnl 2. Redistributions in binary form must reproduce the above copyright
937 dnl notice, this list of conditions and the following disclaimer in the
938 dnl documentation and/or other materials provided with the distribution.
939 dnl 3. Neither the name of the project nor the names of its contributors
940 dnl may be used to endorse or promote products derived from this software
941 dnl without specific prior written permission.
943 dnl THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
944 dnl ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
945 dnl IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
946 dnl ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
947 dnl FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
948 dnl DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
949 dnl OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
950 dnl HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
951 dnl LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
952 dnl OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
956 dnl Checks to see if AF_INET6 is defined
957 AC_DEFUN(AC_CHECK_AF_INET6, [
958 AC_MSG_CHECKING(for AF_INET6)
961 # include <sys/types.h>
962 # include <sys/socket.h>],
967 if test $$1 = yes ; then
968 AC_DEFINE(HAVE_AF_INET6)
973 dnl Checks to see if the sockaddr struct has the 4.4 BSD sa_len member
974 dnl borrowed from LBL libpcap
975 AC_DEFUN(AC_CHECK_SA_LEN, [
976 AC_MSG_CHECKING(if sockaddr struct has sa_len member)
979 # include <sys/types.h>
980 # include <sys/socket.h>],
981 [u_int i = sizeof(((struct sockaddr *)0)->sa_len)],
985 if test $$1 = yes ; then
986 AC_DEFINE(HAVE_SOCKADDR_SA_LEN)
991 dnl Checks for addrinfo structure
992 AC_DEFUN(AC_STRUCT_ADDRINFO, [
993 AC_MSG_CHECKING(for addrinfo)
996 # include <netdb.h>],
1001 if test $$1 = yes; then
1002 AC_DEFINE(HAVE_ADDRINFO)
1004 AC_DEFINE(NEED_ADDRINFO_H)
1009 dnl Checks for NI_MAXSERV
1010 AC_DEFUN(AC_NI_MAXSERV, [
1011 AC_MSG_CHECKING(for NI_MAXSERV)
1013 AC_EGREP_CPP(yes, [#include <netdb.h>
1020 if test $$1 != yes; then
1021 AC_DEFINE(NEED_ADDRINFO_H)
1026 dnl Checks for NI_NAMEREQD
1027 AC_DEFUN(AC_NI_NAMEREQD, [
1028 AC_MSG_CHECKING(for NI_NAMEREQD)
1030 AC_EGREP_CPP(yes, [#include <netdb.h>
1037 if test $$1 != yes; then
1038 AC_DEFINE(NEED_ADDRINFO_H)
1043 dnl Checks for sockaddr_storage structure
1044 AC_DEFUN(AC_STRUCT_SA_STORAGE, [
1045 AC_MSG_CHECKING(for sockaddr_storage)
1048 # include <sys/types.h>
1049 # include <sys/socket.h>],
1050 [struct sockaddr_storage s],
1054 if test $$1 = yes; then
1055 AC_DEFINE(HAVE_SOCKADDR_STORAGE)
1060 dnl Checks for macro of IP address size
1061 AC_DEFUN(AC_CHECK_ADDRSZ, [
1063 dnl check for INADDRSZ
1064 AC_MSG_CHECKING(for INADDRSZ)
1065 AC_CACHE_VAL(ac_cv_inaddrsz,
1067 # include <arpa/nameser.h>],
1071 AC_MSG_RESULT($ac_cv_inaddrsz)
1072 if test $ac_cv_inaddrsz = yes; then
1073 AC_DEFINE(HAVE_INADDRSZ)
1077 dnl check for IN6ADDRSZ
1078 AC_MSG_CHECKING(for IN6ADDRSZ)
1079 AC_CACHE_VAL(ac_cv_in6addrsz,
1081 # include <arpa/nameser.h>],
1082 [int a = IN6ADDRSZ],
1083 ac_cv_in6addrsz=yes,
1084 ac_cv_in6addrsz=no))
1085 AC_MSG_RESULT($ac_cv_in6addrsz)
1086 if test $ac_cv_in6addrsz = yes; then
1087 AC_DEFINE(HAVE_IN6ADDRSZ)
1094 dnl check for RES_USE_INET6
1095 AC_DEFUN(AC_CHECK_RES_USE_INET6, [
1096 AC_MSG_CHECKING(for RES_USE_INET6)
1099 # include <sys/types.h>
1100 # include <netinet/in.h>
1101 # include <resolv.h>],
1102 [int a = RES_USE_INET6],
1106 if test $$1 = yes; then
1107 AC_DEFINE(HAVE_RES_USE_INET6)
1113 AC_DEFUN(AC_CHECK_AAAA, [
1114 AC_MSG_CHECKING(for AAAA)
1117 # include <sys/types.h>
1118 # include <arpa/nameser.h>],
1123 if test $$1 = yes; then
1124 AC_DEFINE(HAVE_AAAA)
1129 dnl check for struct res_state_ext
1130 AC_DEFUN(AC_STRUCT_RES_STATE_EXT, [
1131 AC_MSG_CHECKING(for res_state_ext)
1134 # include <sys/types.h>
1135 # include <netinet/in.h>
1136 # include <netinet6/in6.h>
1137 # include <resolv.h>],
1138 [struct __res_state_ext e],
1142 if test $$1 = yes; then
1143 AC_DEFINE(HAVE_RES_STATE_EXT)
1148 dnl check for struct res_state_ext
1149 AC_DEFUN(AC_STRUCT_RES_STATE, [
1150 AC_MSG_CHECKING(for nsort in res_state)
1153 # include <sys/types.h>
1154 # include <netinet/in.h>
1155 # include <netinet6/in6.h>
1156 # include <resolv.h>],
1157 [struct __res_state e; e.nsort = 0],
1161 if test $$1 = yes; then
1162 AC_DEFINE(HAVE_NEW_RES_STATE)
1167 dnl check for h_errno
1168 AC_DEFUN(AC_VAR_H_ERRNO, [
1169 AC_MSG_CHECKING(for h_errno)
1170 AC_CACHE_VAL(ac_cv_var_h_errno,
1172 # include <sys/types.h>
1173 # include <netdb.h>],
1174 [int foo = h_errno;],
1175 ac_cv_var_h_errno=yes,
1176 ac_cv_var_h_errno=no))
1177 AC_MSG_RESULT($ac_cv_var_h_errno)
1178 if test "$ac_cv_var_h_errno" = "yes"; then
1179 AC_DEFINE(HAVE_H_ERRNO)
1184 dnl Test for __attribute__
1187 AC_DEFUN(AC_C___ATTRIBUTE__, [
1188 AC_MSG_CHECKING(for __attribute__)
1189 AC_CACHE_VAL(ac_cv___attribute__, [
1194 static void foo(void) __attribute__ ((noreturn));
1203 main(int argc, char **argv)
1208 ac_cv___attribute__=yes,
1209 ac_cv___attribute__=no)])
1210 if test "$ac_cv___attribute__" = "yes"; then
1211 AC_DEFINE(HAVE___ATTRIBUTE__, 1, [define if your compiler has __attribute__])
1212 V_DEFS="$V_DEFS -D_U_=\"__attribute__((unused))\""
1214 V_DEFS="$V_DEFS -D_U_=\"\""
1216 AC_MSG_RESULT($ac_cv___attribute__)
1221 dnl Test whether __attribute__((format)) can be applied to function
1225 AC_DEFUN(AC_C___ATTRIBUTE___FORMAT_FUNCTION_POINTER, [
1226 AC_MSG_CHECKING([whether __attribute__((format)) can be applied to function pointers])
1227 AC_CACHE_VAL(ac_cv___attribute___format_function_pointer, [
1232 extern int (*foo)(const char *fmt, ...)
1233 __attribute__ ((format (printf, 1, 2)));
1236 main(int argc, char **argv)
1238 (*foo)("%s", "test");
1241 ac_cv___attribute___format_function_pointer=yes,
1242 ac_cv___attribute___format_function_pointer=no)])
1243 if test "$ac_cv___attribute___format_function_pointer" = "yes"; then
1244 AC_DEFINE(__ATTRIBUTE___FORMAT_OK_FOR_FUNCTION_POINTERS, 1,
1245 [define if your compiler allows __attribute__((format)) to be applied to function pointers])
1247 AC_MSG_RESULT($ac_cv___attribute___format_function_pointer)
1250 AC_DEFUN(AC_LBL_SSLEAY,
1253 # Find the last component of $libdir; it's not necessarily
1254 # "lib" - it might be "lib64" on, for example, x86-64
1257 # We assume the directory in which we're looking for
1258 # libcrypto has a subdirectory with that as its name.
1260 tmplib=`echo "$libdir" | sed 's,.*/,,'`
1263 # XXX - is there a better way to check if a given library is
1264 # in a given directory than checking each of the possible
1265 # shared library suffixes?
1267 # Are there any other suffixes we need to look for? Do we
1268 # have to worry about ".so.{version}"?
1270 # Or should we just look for "libcrypto.*"?
1272 if test -d "$1/$tmplib" -a \( -f "$1/$tmplib/libcrypto.a" -o \
1273 -f "$1/$tmplib/libcrypto.so" -o \
1274 -f "$1/$tmplib/libcrypto.sl" -o \
1275 -f "$1/$tmplib/libcrypto.dylib" \); then
1276 ac_cv_ssleay_path="$1"
1280 # Make sure we have the headers as well.
1282 if test -d "$1/include/openssl" -a -f "$1/include/openssl/des.h"; then
1283 incdir="-I$1/include"