tcpdump/configure.ac
Denis Ovsienko fbd44158e0 Mend "make check" on Solaris 9 (Autoconf only).
Sun C 5.9 does not support C99. GCC 4.6.4 recognizes -std=gnu99, but
does not support the z length modifier in printf(3). In either case 18
tests fail in the following manner:

<     [...]: domain [length 0 < 12] (invalid)
---
>     [...]: domain [length 0 < zu] (invalid)

Make these tests conditional and disable them when HAVE_NO_PRINTF_Z is
defined. Modify the Autoconf leg of the build process to define the
macro when printf() does not handle %zu as expected. The CMake leg looks
broken on Solaris 9 with 2.8.9 now, so leave it be for now.
2021-07-25 14:44:03 +01:00

1029 lines
26 KiB
Plaintext

dnl Copyright (c) 1994, 1995, 1996, 1997
dnl The Regents of the University of California. All rights reserved.
dnl
dnl Process this file with autoconf to produce a configure script.
dnl
#
# See
#
# https://ftp.gnu.org/gnu/config/README
#
# for the URLs to use to fetch new versions of config.guess and
# config.sub.
#
AC_PREREQ(2.64)
AC_INIT(tcpdump, m4_esyscmd_s([cat VERSION]))
AC_CONFIG_SRCDIR(tcpdump.c)
AC_CANONICAL_HOST
AC_LBL_C_INIT_BEFORE_CC(V_INCLS)
#
# Try to enable as many C99 features as we can.
# At minimum, we want C++/C99-style // comments.
#
AC_PROG_CC_C99
if test "$ac_cv_prog_cc_c99" = "no"; then
AC_MSG_WARN([The C compiler does not support C99; there may be compiler errors])
fi
AC_LBL_C_INIT(V_CCOPT, V_INCLS)
AC_LBL_C_INLINE
AC_CHECK_HEADERS(fcntl.h rpc/rpc.h rpc/rpcent.h net/if.h)
AC_CHECK_HEADERS(net/pfvar.h, , , [#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>])
if test "$ac_cv_header_net_pfvar_h" = yes; then
AC_CHECK_HEADERS(net/if_pflog.h, , , [#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/pfvar.h>])
if test "$ac_cv_header_net_if_pflog_h" = yes; then
LOCALSRC="print-pflog.c $LOCALSRC"
fi
fi
case "$host_os" in
darwin*)
AC_ARG_ENABLE(universal,
AC_HELP_STRING([--disable-universal],[don't build universal on macOS]))
if test "$enable_universal" != "no"; then
case "$host_os" in
darwin9.*)
#
# Leopard. Build for x86 and 32-bit PowerPC, with
# x86 first. (That's what Apple does.)
#
V_CCOPT="$V_CCOPT -arch i386 -arch ppc"
LDFLAGS="$LDFLAGS -arch i386 -arch ppc"
;;
darwin10.*)
#
# Snow Leopard. Build for x86-64 and x86, with
# x86-64 first. (That's what Apple does.)
#
V_CCOPT="$V_CCOPT -arch x86_64 -arch i386"
LDFLAGS="$LDFLAGS -arch x86_64 -arch i386"
;;
esac
fi
;;
esac
AC_ARG_WITH(smi,
[ --with-smi link with libsmi (allows to load MIBs on the fly to decode SNMP packets. [default=yes]
--without-smi don't link with libsmi],,
with_smi=yes)
if test "x$with_smi" != "xno" ; then
AC_CHECK_HEADER(smi.h,
[
#
# OK, we found smi.h. Do we have libsmi with smiInit?
#
AC_CHECK_LIB(smi, smiInit,
[
#
# OK, we have libsmi with smiInit. Can we use it?
#
AC_MSG_CHECKING([whether to enable libsmi])
savedlibs="$LIBS"
LIBS="-lsmi $LIBS"
AC_TRY_RUN(
[
/* libsmi available check */
#include <smi.h>
main()
{
int current, revision, age, n;
const int required = 2;
if (smiInit(""))
exit(1);
if (strcmp(SMI_LIBRARY_VERSION, smi_library_version))
exit(2);
n = sscanf(smi_library_version, "%d:%d:%d", &current, &revision, &age);
if (n != 3)
exit(3);
if (required < current - age || required > current)
exit(4);
exit(0);
}
],
[
AC_MSG_RESULT(yes)
AC_DEFINE(USE_LIBSMI, 1,
[Define if you enable support for libsmi])
],
[
dnl autoconf documentation says that
dnl $? contains the exit value.
dnl reality is that it does not.
dnl We leave this in just in case
dnl autoconf ever comes back to
dnl match the documentation.
case $? in
1) AC_MSG_RESULT(no - smiInit failed) ;;
2) AC_MSG_RESULT(no - header/library version mismatch) ;;
3) AC_MSG_RESULT(no - can't determine library version) ;;
4) AC_MSG_RESULT(no - too old) ;;
*) AC_MSG_RESULT(no) ;;
esac
LIBS="$savedlibs"
],
[
AC_MSG_RESULT(not when cross-compiling)
LIBS="$savedlibs"
]
)
])
])
fi
AC_MSG_CHECKING([whether to enable the possibly-buggy SMB printer])
AC_ARG_ENABLE(smb,
[ --enable-smb enable possibly-buggy SMB printer [default=no]
--disable-smb disable possibly-buggy SMB printer],,
enableval=no)
case "$enableval" in
yes) AC_MSG_RESULT(yes)
AC_DEFINE(ENABLE_SMB, 1,
[define if you want to build the possibly-buggy SMB printer])
LOCALSRC="print-smb.c smbutil.c $LOCALSRC"
;;
*) AC_MSG_RESULT(no)
;;
esac
AC_ARG_WITH(user, [ --with-user=USERNAME drop privileges by default to USERNAME])
AC_MSG_CHECKING([whether to drop root privileges by default])
if test ! -z "$with_user" ; then
AC_DEFINE_UNQUOTED(WITH_USER, "$withval",
[define if should drop privileges by default])
AC_MSG_RESULT(to \"$withval\")
else
AC_MSG_RESULT(no)
fi
AC_ARG_WITH(chroot, [ --with-chroot=DIRECTORY when dropping privileges, chroot to DIRECTORY])
AC_MSG_CHECKING([whether to chroot])
if test ! -z "$with_chroot" && test "$with_chroot" != "no" ; then
AC_DEFINE_UNQUOTED(WITH_CHROOT, "$withval",
[define if should chroot when dropping privileges])
AC_MSG_RESULT(to \"$withval\")
else
AC_MSG_RESULT(no)
fi
AC_ARG_WITH(sandbox-capsicum,
AS_HELP_STRING([--with-sandbox-capsicum],
[use Capsicum security functions @<:@default=yes, if available@:>@]))
#
# Check whether various functions are available. If any are, set
# ac_lbl_capsicum_function_seen to yes; if any are not, set
# ac_lbl_capsicum_function_not_seen to yes.
#
# We don't check cap_rights_init(), as it's a macro, wrapping another
# function, in at least some versions of FreeBSD, and AC_CHECK_FUNCS()
# doesn't handle that.
#
# All of the ones we check for must be available in order to enable
# capsicum sandboxing.
#
# XXX - do we need to check for all of them, or are there some that, if
# present, imply others are present?
#
if test ! -z "$with_sandbox_capsicum" && test "$with_sandbox_capsicum" != "no" ; then
#
# First, make sure we have the required header.
#
AC_CHECK_HEADER(sys/capsicum.h,
[
#
# We do; now make sure we have the required functions.
#
AC_CHECK_FUNCS(cap_enter cap_rights_limit cap_ioctls_limit openat,
ac_lbl_capsicum_function_seen=yes,
ac_lbl_capsicum_function_not_seen=yes)
])
AC_CHECK_LIB(casper, cap_init, LIBS="$LIBS -lcasper")
AC_CHECK_LIB(cap_dns, cap_gethostbyaddr, LIBS="$LIBS -lcap_dns")
fi
AC_MSG_CHECKING([whether to sandbox using capsicum])
if test "x$ac_lbl_capsicum_function_seen" = "xyes" -a "x$ac_lbl_capsicum_function_not_seen" != "xyes"; then
AC_DEFINE(HAVE_CAPSICUM, 1, [capsicum support available])
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
AC_MSG_CHECKING([whether to sandbox using Casper library])
if test "x$ac_cv_lib_casper_cap_init" = "xyes" -a "x$ac_cv_lib_cap_dns_cap_gethostbyaddr" = "xyes"; then
AC_DEFINE(HAVE_CASPER, 1, [Casper support available])
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
#
# We must check this before checking whether to check the OS's IPv6,
# support because, on some platforms (such as SunOS 5.x), the test
# program requires the extra networking libraries.
#
AC_LBL_LIBRARY_NET
#
# Check whether AF_INET6 and struct in6_addr are defined.
# If they aren't both defined, we don't have sufficient OS
# support for IPv6, so we don't look for IPv6 support libraries,
# and we define AF_INET6 and struct in6_addr ourselves.
#
AC_MSG_CHECKING([whether the operating system supports IPv6])
AC_COMPILE_IFELSE(
[
AC_LANG_SOURCE(
[[
/* AF_INET6 available check */
#include <sys/types.h>
#ifdef _WIN32
#include <ws2tcpip.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#endif
#ifdef AF_INET6
void
foo(struct in6_addr *addr)
{
memset(addr, 0, sizeof (struct in6_addr));
}
#else
#error "AF_INET6 not defined"
#endif
]])
],
[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_OS_IPV6_SUPPORT, 1,
[define if the OS provides AF_INET6 and struct in6_addr])
ipv6=yes
],
[
AC_MSG_RESULT(no)
ipv6=no
]
)
ipv6type=unknown
ipv6lib=none
ipv6trylibc=no
if test "$ipv6" = "yes"; then
AC_MSG_CHECKING([ipv6 stack type])
for i in inria kame linux-glibc linux-libinet6 toshiba v6d zeta; do
case $i in
inria)
dnl http://www.kame.net/
AC_EGREP_CPP(yes,
[#include <netinet/in.h>
#ifdef IPV6_INRIA_VERSION
yes
#endif],
[ipv6type=$i])
;;
kame)
dnl http://www.kame.net/
AC_EGREP_CPP(yes,
[#include <netinet/in.h>
#ifdef __KAME__
yes
#endif],
[ipv6type=$i;
ipv6lib=inet6;
ipv6libdir=/usr/local/v6/lib;
ipv6trylibc=yes])
;;
linux-glibc)
dnl http://www.v6.linux.or.jp/
AC_EGREP_CPP(yes,
[#include <features.h>
#if defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
yes
#endif],
[ipv6type=$i])
;;
linux-libinet6)
dnl http://www.v6.linux.or.jp/
dnl
dnl This also matches Solaris 8 and Tru64 UNIX 5.1,
dnl and possibly other versions of those OSes
dnl
if test -d /usr/inet6 -o -f /usr/include/netinet/ip6.h; then
ipv6type=$i
ipv6lib=inet6
ipv6libdir=/usr/inet6/lib
ipv6trylibc=yes;
CFLAGS="-I/usr/inet6/include $CFLAGS"
fi
;;
toshiba)
AC_EGREP_CPP(yes,
[#include <sys/param.h>
#ifdef _TOSHIBA_INET6
yes
#endif],
[ipv6type=$i;
ipv6lib=inet6;
ipv6libdir=/usr/local/v6/lib])
;;
v6d)
AC_EGREP_CPP(yes,
[#include </usr/local/v6/include/sys/v6config.h>
#ifdef __V6D__
yes
#endif],
[ipv6type=$i;
ipv6lib=v6;
ipv6libdir=/usr/local/v6/lib;
CFLAGS="-I/usr/local/v6/include $CFLAGS"])
;;
zeta)
AC_EGREP_CPP(yes,
[#include <sys/param.h>
#ifdef _ZETA_MINAMI_INET6
yes
#endif],
[ipv6type=$i;
ipv6lib=inet6;
ipv6libdir=/usr/local/v6/lib])
;;
esac
if test "$ipv6type" != "unknown"; then
break
fi
done
AC_MSG_RESULT($ipv6type)
fi
if test "$ipv6" = "yes" -a "$ipv6lib" != "none"; then
if test -d $ipv6libdir -a -f $ipv6libdir/lib$ipv6lib.a; then
LIBS="-L$ipv6libdir -l$ipv6lib $LIBS"
echo "You have $ipv6lib library, using it"
else
if test "$ipv6trylibc" = "yes"; then
echo "You do not have $ipv6lib library, using libc"
else
echo 'Fatal: no $ipv6lib library found. cannot continue.'
echo "You need to fetch lib$ipv6lib.a from appropriate"
echo 'ipv6 kit and compile beforehand.'
exit 1
fi
fi
fi
AC_REPLACE_FUNCS(strlcat strlcpy strdup strsep getservent getopt_long)
AC_CHECK_FUNCS(fork vfork strftime)
AC_CHECK_FUNCS(setlinebuf)
#
# Make sure we have vsnprintf() and snprintf(); we require them.
#
AC_CHECK_FUNC(vsnprintf,,
AC_MSG_ERROR([vsnprintf() is required but wasn't found]))
AC_CHECK_FUNC(snprintf,,
AC_MSG_ERROR([snprintf() is required but wasn't found]))
#
# Define HAVE_NO_PRINTF_Z to make it possible to disable test cases that
# depend on %zu.
#
AC_MSG_CHECKING([whether printf(3) supports the z length modifier])
AC_RUN_IFELSE(
[
AC_LANG_SOURCE([[
#include <stdio.h>
#include <string.h>
int main()
{
char buf[100];
snprintf(buf, sizeof(buf), "%zu", sizeof(buf));
return strncmp(buf, "100", sizeof(buf)) ? 1 : 0;
}
]])
],
[
AC_MSG_RESULT(yes)
],
[
AC_MSG_RESULT(no)
AC_DEFINE(HAVE_NO_PRINTF_Z, 1,
[Define to 1 if printf(3) does not support the z length modifier.])
]
)
AC_CHECK_LIB(rpc, main) dnl It's unclear why we might need -lrpc
dnl Some platforms may need -lnsl for getrpcbynumber.
AC_SEARCH_LIBS(getrpcbynumber, nsl,
AC_DEFINE(HAVE_GETRPCBYNUMBER, 1, [define if you have getrpcbynumber()]))
AC_LBL_LIBPCAP(V_PCAPDEP, V_INCLS)
#
# Check for these after AC_LBL_LIBPCAP, so we link with the appropriate
# libraries (e.g., "-lsocket -lnsl" on Solaris).
#
# You are in a twisty little maze of UN*Xes, all different.
# Some might not have ether_ntohost().
# Some might have it and declare it in <net/ethernet.h>.
# Some might have it and declare it in <netinet/ether.h>
# Some might have it and declare it in <sys/ethernet.h>.
# Some might have it and declare it in <arpa/inet.h>.
# Some might have it and declare it in <netinet/if_ether.h>.
# Some might have it and not declare it in any header file.
#
# Before you is a C compiler.
#
AC_CHECK_FUNCS(ether_ntohost, [
AC_CACHE_CHECK(for buggy ether_ntohost, ac_cv_buggy_ether_ntohost, [
AC_TRY_RUN([
#include <netdb.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
int
main(int argc, char **argv)
{
u_char ea[6] = { 0xff, 0xff, 0xff, 0xff, 0xff };
char name[MAXHOSTNAMELEN];
ether_ntohost(name, (struct ether_addr *)ea);
exit(0);
}
], [ac_cv_buggy_ether_ntohost=no],
[ac_cv_buggy_ether_ntohost=yes],
[ac_cv_buggy_ether_ntohost="not while cross-compiling"])])
if test "$ac_cv_buggy_ether_ntohost" = "no"; then
AC_DEFINE(USE_ETHER_NTOHOST, 1,
[define if you have ether_ntohost() and it works])
fi
])
if test "$ac_cv_func_ether_ntohost" = yes -a \
"$ac_cv_buggy_ether_ntohost" = "no"; then
#
# OK, we have ether_ntohost(). Is it declared in <net/ethernet.h>?
#
# This test fails if we don't have <net/ethernet.h> or if we do
# but it doesn't declare ether_ntohost().
#
AC_CHECK_DECL(ether_ntohost,
[
AC_DEFINE(NET_ETHERNET_H_DECLARES_ETHER_NTOHOST,,
[Define to 1 if net/ethernet.h declares `ether_ntohost'])
],,
[
#include <net/ethernet.h>
])
#
# Did that succeed?
#
if test "$ac_cv_have_decl_ether_ntohost" != yes; then
#
# No, how about <netinet/ether.h>, as on Linux?
#
# This test fails if we don't have <netinet/ether.h>
# or if we do but it doesn't declare ether_ntohost().
#
# Unset ac_cv_have_decl_ether_ntohost so we don't
# treat the previous failure as a cached value and
# suppress the next test.
#
unset ac_cv_have_decl_ether_ntohost
AC_CHECK_DECL(ether_ntohost,
[
AC_DEFINE(NETINET_ETHER_H_DECLARES_ETHER_NTOHOST,,
[Define to 1 if netinet/ether.h declares `ether_ntohost'])
],,
[
#include <netinet/ether.h>
])
fi
#
# Did that succeed?
#
if test "$ac_cv_have_decl_ether_ntohost" != yes; then
#
# No, how about <sys/ethernet.h>, as on Solaris 10
# and later?
#
# This test fails if we don't have <sys/ethernet.h>
# or if we do but it doesn't declare ether_ntohost().
#
# Unset ac_cv_have_decl_ether_ntohost so we don't
# treat the previous failure as a cached value and
# suppress the next test.
#
unset ac_cv_have_decl_ether_ntohost
AC_CHECK_DECL(ether_ntohost,
[
AC_DEFINE(SYS_ETHERNET_H_DECLARES_ETHER_NTOHOST,,
[Define to 1 if sys/ethernet.h declares `ether_ntohost'])
],,
[
#include <sys/ethernet.h>
])
fi
#
# Did that succeed?
#
if test "$ac_cv_have_decl_ether_ntohost" != yes; then
#
# No, how about <arpa/inet.h>, as in AIX?
#
# This test fails if we don't have <arpa/inet.h>
# (if we have ether_ntohost(), we should have
# networking, and if we have networking, we should
# have <arpa/inet.h>) or if we do but it doesn't
# declare ether_ntohost().
#
# Unset ac_cv_have_decl_ether_ntohost so we don't
# treat the previous failure as a cached value and
# suppress the next test.
#
unset ac_cv_have_decl_ether_ntohost
AC_CHECK_DECL(ether_ntohost,
[
AC_DEFINE(ARPA_INET_H_DECLARES_ETHER_NTOHOST,,
[Define to 1 if arpa/inet.h declares `ether_ntohost'])
],,
[
#include <arpa/inet.h>
])
fi
#
# Did that succeed?
#
if test "$ac_cv_have_decl_ether_ntohost" != yes; then
#
# No, how about <netinet/if_ether.h>?
# On some platforms, it requires <net/if.h> and
# <netinet/in.h>, and we always include it with
# both of them, so test it with both of them.
#
# This test fails if we don't have <netinet/if_ether.h>
# and the headers we include before it, or if we do but
# <netinet/if_ether.h> doesn't declare ether_hostton().
#
# Unset ac_cv_have_decl_ether_ntohost so we don't
# treat the previous failure as a cached value and
# suppress the next test.
#
unset ac_cv_have_decl_ether_ntohost
AC_CHECK_DECL(ether_ntohost,
[
AC_DEFINE(NETINET_IF_ETHER_H_DECLARES_ETHER_NTOHOST,,
[Define to 1 if netinet/if_ether.h declares `ether_ntohost'])
],,
[
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
])
fi
#
# After all that, is ether_ntohost() declared?
#
if test "$ac_cv_have_decl_ether_ntohost" = yes; then
#
# Yes.
#
AC_DEFINE(HAVE_DECL_ETHER_NTOHOST, 1,
[Define to 1 if you have the declaration of `ether_ntohost'])
else
#
# No, we'll have to declare it ourselves.
# Do we have "struct ether_addr" if we include
# <netinet/if_ether.h>?
#
AC_CHECK_TYPES(struct ether_addr,,,
[
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
])
fi
fi
dnl
dnl Check for "pcap_list_datalinks()" and use a substitute version if
dnl it's not present. If it is present, check for "pcap_free_datalinks()";
dnl if it's not present, we don't replace it for now. (We could do so
dnl on UN*X, but not on Windows, where hilarity ensues if a program
dnl built with one version of the MSVC support library tries to free
dnl something allocated by a library built with another version of
dnl the MSVC support library.)
dnl
AC_CHECK_FUNC(pcap_list_datalinks,
[
AC_DEFINE(HAVE_PCAP_LIST_DATALINKS, 1,
[define if libpcap has pcap_list_datalinks()])
AC_CHECK_FUNCS(pcap_free_datalinks)
],
[
AC_LIBOBJ(datalinks)
])
dnl
dnl Check for "pcap_datalink_name_to_val()", and use a substitute
dnl version if it's not present. If it is present, check for
dnl "pcap_datalink_val_to_description()", and if we don't have it,
dnl use a substitute version.
dnl
AC_CHECK_FUNC(pcap_datalink_name_to_val,
[
AC_DEFINE(HAVE_PCAP_DATALINK_NAME_TO_VAL, 1,
[define if libpcap has pcap_datalink_name_to_val()])
AC_CHECK_FUNC(pcap_datalink_val_to_description,
AC_DEFINE(HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION, 1,
[define if libpcap has pcap_datalink_val_to_description()]),
[
AC_LIBOBJ(dlnames)
])
],
[
AC_LIBOBJ(dlnames)
])
dnl
dnl Check for "pcap_set_datalink()"; you can't substitute for it if
dnl it's absent (it has hooks into libpcap), so just define the
dnl HAVE_ value if it's there.
dnl
AC_CHECK_FUNCS(pcap_set_datalink)
dnl
dnl Check for "pcap_breakloop()"; you can't substitute for it if
dnl it's absent (it has hooks into the live capture routines),
dnl so just define the HAVE_ value if it's there.
dnl
AC_CHECK_FUNCS(pcap_breakloop)
#
# Do we have the new open API? Check for pcap_create, and assume that,
# if we do, we also have pcap_activate() and the other new routines
# introduced in libpcap 1.0.0.
#
AC_CHECK_FUNCS(pcap_create)
if test $ac_cv_func_pcap_create = "yes" ; then
#
# OK, do we have pcap_set_tstamp_type? If so, assume we have
# pcap_list_tstamp_types and pcap_free_tstamp_types as well.
#
AC_CHECK_FUNCS(pcap_set_tstamp_type)
#
# And do we have pcap_set_tstamp_precision? If so, we assume
# we also have pcap_open_offline_with_tstamp_precision.
#
AC_CHECK_FUNCS(pcap_set_tstamp_precision)
fi
#
# Check for a miscellaneous collection of functions which we use
# if we have them.
#
AC_CHECK_FUNCS(pcap_findalldevs)
if test $ac_cv_func_pcap_findalldevs = "yes" ; then
dnl Check for libpcap having pcap_findalldevs() but the pcap.h header
dnl not having pcap_if_t; some versions of Mac OS X shipped with pcap.h
dnl from 0.6 and libpcap 0.8, so that libpcap had pcap_findalldevs but
dnl pcap.h didn't have pcap_if_t.
savedcppflags="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $V_INCLS"
AC_CHECK_TYPES(pcap_if_t, , , [#include <pcap.h>])
CPPFLAGS="$savedcppflags"
fi
AC_CHECK_FUNCS(pcap_dump_flush pcap_lib_version)
if test $ac_cv_func_pcap_lib_version = "no" ; then
AC_MSG_CHECKING(whether pcap_version is defined by libpcap)
AC_TRY_LINK([],
[
extern char pcap_version[];
return (int)pcap_version;
],
ac_lbl_cv_pcap_version_defined=yes,
ac_lbl_cv_pcap_version_defined=no)
if test "$ac_lbl_cv_pcap_version_defined" = yes ; then
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_PCAP_VERSION, 1, [define if libpcap has pcap_version])
else
AC_MSG_RESULT(no)
fi
fi
AC_CHECK_FUNCS(pcap_setdirection pcap_set_immediate_mode pcap_dump_ftell64)
AC_CHECK_FUNCS(pcap_open pcap_findalldevs_ex)
AC_REPLACE_FUNCS(pcap_dump_ftell)
#
# Check for special debugging functions
#
AC_CHECK_FUNCS(pcap_set_parser_debug)
if test "$ac_cv_func_pcap_set_parser_debug" = "no" ; then
#
# OK, we don't have pcap_set_parser_debug() to set the libpcap
# filter expression parser debug flag; can we directly set the
# flag?
AC_MSG_CHECKING(whether pcap_debug is defined by libpcap)
AC_TRY_LINK([],
[
extern int pcap_debug;
return pcap_debug;
],
ac_lbl_cv_pcap_debug_defined=yes,
ac_lbl_cv_pcap_debug_defined=no)
if test "$ac_lbl_cv_pcap_debug_defined" = yes ; then
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_PCAP_DEBUG, 1, [define if libpcap has pcap_debug])
else
AC_MSG_RESULT(no)
#
# OK, what about "yydebug"?
#
AC_MSG_CHECKING(whether yydebug is defined by libpcap)
AC_TRY_LINK([],
[
extern int yydebug;
return yydebug;
],
ac_lbl_cv_yydebug_defined=yes,
ac_lbl_cv_yydebug_defined=no)
if test "$ac_lbl_cv_yydebug_defined" = yes ; then
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_YYDEBUG, 1, [define if libpcap has yydebug])
else
AC_MSG_RESULT(no)
fi
fi
fi
AC_CHECK_FUNCS(pcap_set_optimizer_debug)
AC_REPLACE_FUNCS(bpf_dump) dnl moved to libpcap in 0.6
V_GROUP=0
if test -f /etc/group -a ! -z "`grep '^wheel:' /etc/group`" ; then
V_GROUP=wheel
fi
#
# Assume V7/BSD convention for man pages (file formats in section 5,
# miscellaneous info in section 7).
#
MAN_FILE_FORMATS=5
MAN_MISC_INFO=7
case "$host_os" in
aix*)
dnl Workaround to enable certain features
AC_DEFINE(_SUN,1,[define on AIX to get certain functions])
;;
hpux*)
#
# Use System V conventions for man pages.
#
MAN_FILE_FORMATS=4
MAN_MISC_INFO=5
;;
irix*)
V_GROUP=sys
#
# Use System V conventions for man pages.
#
MAN_FILE_FORMATS=4
MAN_MISC_INFO=5
;;
osf*)
V_GROUP=system
#
# Use System V conventions for man pages.
#
MAN_FILE_FORMATS=4
MAN_MISC_INFO=5
;;
solaris*)
V_GROUP=sys
#
# Use System V conventions for man pages.
#
MAN_FILE_FORMATS=4
MAN_MISC_INFO=5
;;
esac
if test -f /dev/bpf0 ; then
V_GROUP=bpf
fi
#
# Make sure we have a definition for C99's uintptr_t (regardless of
# whether the environment is a C99 environment or not).
#
AC_TYPE_UINTPTR_T
#
# Check whether we have pcap/pcap-inttypes.h.
# If we do, we use that to get the C99 types defined.
#
savedcppflags="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $V_INCLS"
AC_CHECK_HEADERS(pcap/pcap-inttypes.h)
CPPFLAGS="$savedcppflags"
#
# Define the old BSD specified-width types in terms of the C99 types;
# we may need them with libpcap include files.
#
AC_CHECK_TYPE([u_int8_t], ,
[AC_DEFINE([u_int8_t], [uint8_t],
[Define to `uint8_t' if u_int8_t not defined.])],
[AC_INCLUDES_DEFAULT
#include <sys/types.h>
])
AC_CHECK_TYPE([u_int16_t], ,
[AC_DEFINE([u_int16_t], [uint16_t],
[Define to `uint16_t' if u_int16_t not defined.])],
[AC_INCLUDES_DEFAULT
#include <sys/types.h>
])
AC_CHECK_TYPE([u_int32_t], ,
[AC_DEFINE([u_int32_t], [uint32_t],
[Define to `uint32_t' if u_int32_t not defined.])],
[AC_INCLUDES_DEFAULT
#include <sys/types.h>
])
AC_CHECK_TYPE([u_int64_t], ,
[AC_DEFINE([u_int64_t], [uint64_t],
[Define to `uint64_t' if u_int64_t not defined.])],
[AC_INCLUDES_DEFAULT
#include <sys/types.h>
])
AC_PROG_RANLIB
AC_CHECK_TOOL([AR], [ar])
AC_LBL_DEVEL(V_CCOPT)
# Check for OpenSSL/libressl libcrypto
AC_MSG_CHECKING(whether to use OpenSSL/libressl libcrypto)
# Specify location for both includes and libraries.
want_libcrypto=ifavailable
AC_ARG_WITH(crypto,
AS_HELP_STRING([--with-crypto]@<:@=DIR@:>@,
[use OpenSSL/libressl libcrypto (located in directory DIR, if specified) @<:@default=yes, if available@:>@]),
[
if test $withval = no
then
# User doesn't want to link with libcrypto.
want_libcrypto=no
AC_MSG_RESULT(no)
elif test $withval = yes
then
# User wants to link with libcrypto but hasn't specified
# a directory.
want_libcrypto=yes
AC_MSG_RESULT(yes)
else
# User wants to link with libcrypto and has specified
# a directory, so use the provided value.
want_libcrypto=yes
libcrypto_root=$withval
AC_MSG_RESULT([yes, using the version installed in $withval])
#
# Put the subdirectories of the libcrypto root directory
# at the front of the header and library search path.
#
CFLAGS="-I$withval/include $CFLAGS"
LIBS="-L$withval/lib $LIBS"
fi
],[
#
# Use libcrypto if it's present, otherwise don't; no directory
# was specified.
#
want_libcrypto=ifavailable
AC_MSG_RESULT([yes, if available])
])
if test "$want_libcrypto" != "no"; then
#
# Don't check for libcrypto unless we have its headers;
# Apple, bless their pointy little heads, apparently ship
# libcrypto as a library, but not the header files, in
# El Capitan, probably because they don't want you writing
# nasty portable code that could run on other UN*Xes, they
# want you writing code that uses their Shiny New Crypto
# Library and that only runs on macOS.
#
AC_CHECK_HEADER(openssl/crypto.h,
[
AC_CHECK_LIB(crypto, DES_cbc_encrypt)
if test "$ac_cv_lib_crypto_DES_cbc_encrypt" = "yes"; then
AC_CHECK_HEADERS(openssl/evp.h)
#
# OK, then:
#
# 1) do we have EVP_CIPHER_CTX_new?
# If so, we use it to allocate an
# EVP_CIPHER_CTX, as EVP_CIPHER_CTX may be
# opaque; otherwise, we allocate it ourselves.
#
# 2) do we have EVP_DecryptInit_ex()?
# If so, we use it, because we need to be
# able to make two "initialize the cipher"
# calls, one with the cipher and key, and
# one with the IV, and, as of OpenSSL 1.1,
# You Can't Do That with EVP_DecryptInit(),
# because a call to EVP_DecryptInit() will
# unconditionally clear the context, and
# if you don't supply a cipher, it'll
# clear the cipher, rendering the context
# unusable and causing a crash.
#
AC_CHECK_FUNCS(EVP_CIPHER_CTX_new EVP_DecryptInit_ex)
fi
])
fi
# Check for libcap-ng
AC_MSG_CHECKING(whether to use libcap-ng)
# Specify location for both includes and libraries.
want_libcap_ng=ifavailable
AC_ARG_WITH(cap_ng,
AS_HELP_STRING([--with-cap-ng],
[use libcap-ng @<:@default=yes, if available@:>@]),
[
if test $withval = no
then
want_libcap_ng=no
AC_MSG_RESULT(no)
elif test $withval = yes
then
want_libcap_ng=yes
AC_MSG_RESULT(yes)
fi
],[
#
# Use libcap-ng if it's present, otherwise don't.
#
want_libcap_ng=ifavailable
AC_MSG_RESULT([yes, if available])
])
if test "$want_libcap_ng" != "no"; then
AC_CHECK_LIB(cap-ng, capng_change_id)
AC_CHECK_HEADERS(cap-ng.h)
fi
dnl
dnl set additional include path if necessary
if test "$missing_includes" = "yes"; then
CPPFLAGS="$CPPFLAGS -I$srcdir/missing"
V_INCLS="$V_INCLS -I$srcdir/missing"
fi
AC_SUBST(V_CCOPT)
AC_SUBST(V_DEFS)
AC_SUBST(V_GROUP)
AC_SUBST(V_INCLS)
AC_SUBST(V_PCAPDEP)
AC_SUBST(LOCALSRC)
AC_SUBST(MAN_FILE_FORMATS)
AC_SUBST(MAN_MISC_INFO)
AC_PROG_INSTALL
AC_CONFIG_HEADER(config.h)
AC_OUTPUT_COMMANDS([if test -f .devel; then
echo timestamp > stamp-h
cat $srcdir/Makefile-devel-adds >> Makefile
make depend || exit 1
fi])
AC_OUTPUT(Makefile tcpdump.1)
exit 0