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configure.ac
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configure.ac
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dnl
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
#
# http://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(pcap, m4_esyscmd_s([cat VERSION]))
AC_CONFIG_SRCDIR(pcap.c)
AC_SUBST(PACKAGE_NAME)
AC_CANONICAL_SYSTEM
AC_LBL_C_INIT_BEFORE_CC(V_CCOPT, 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 "$ac_cv_prog_cc_c99" = "no"; then
AC_MSG_WARN([The C compiler does not support C99; there may be compiler errors])
fi
AC_LBL_C_INIT(V_CCOPT, V_INCLS)
AC_LBL_SHLIBS_INIT
AC_LBL_C_INLINE
#
# Try to arrange for large file support.
#
AC_SYS_LARGEFILE
AC_FUNC_FSEEKO
dnl
dnl Even if <net/bpf.h> were, on all OSes that support BPF, fixed to
dnl include <sys/ioccom.h>, and we were to drop support for older
dnl releases without that fix, so that pcap-bpf.c doesn't need to
dnl include <sys/ioccom.h>, the test program in "AC_LBL_FIXINCLUDES"
dnl in "aclocal.m4" uses it, so we would still have to test for it
dnl and set "HAVE_SYS_IOCCOM_H" if we have it, otherwise
dnl "AC_LBL_FIXINCLUDES" wouldn't work on some platforms such as Solaris.
dnl
AC_CHECK_HEADERS(sys/ioccom.h sys/sockio.h)
AC_CHECK_HEADERS(netpacket/packet.h)
AC_CHECK_HEADERS(net/pfvar.h, , , [#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>])
if test "$ac_cv_header_net_pfvar_h" = yes; then
#
# Check for various PF actions.
#
AC_MSG_CHECKING(whether net/pfvar.h defines PF_NAT through PF_NORDR)
AC_TRY_COMPILE(
[#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/pfvar.h>],
[return PF_NAT+PF_NONAT+PF_BINAT+PF_NOBINAT+PF_RDR+PF_NORDR;],
[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_PF_NAT_THROUGH_PF_NORDR, 1,
[define if net/pfvar.h defines PF_NAT through PF_NORDR])
],
AC_MSG_RESULT(no))
fi
case "$host_os" in
linux*|uclinux*)
#
# linux/if_bonding.h requires sys/socket.h.
#
AC_CHECK_HEADERS(linux/sockios.h linux/if_bonding.h,,,
[
#include <sys/socket.h>
#include <linux/if.h>
])
#
# Check for the eventfd header.
#
AC_CHECK_HEADERS(sys/eventfd.h)
;;
esac
AC_LBL_FIXINCLUDES
AC_CHECK_FUNCS(strerror strerror_r strerror_s)
needsnprintf=no
AC_CHECK_FUNCS(vsnprintf snprintf,,
[needsnprintf=yes])
if test $needsnprintf = yes; then
AC_LIBOBJ([snprintf])
fi
needstrlcat=no
AC_CHECK_FUNCS(strlcat,,
[needstrlcat=yes])
if test $needstrlcat = yes; then
AC_LIBOBJ([strlcat])
fi
needstrlcpy=no
AC_CHECK_FUNCS(strlcpy,,
[needstrlcpy=yes])
if test $needstrlcpy = yes; then
AC_LIBOBJ([strlcpy])
fi
needstrtok_r=no
AC_CHECK_FUNCS(strtok_r,,
[needstrtok_r=yes])
if test $needstrtok_r = yes; then
AC_LIBOBJ([strtok_r])
fi
#
# Do we have ffs(), and is it declared in <strings.h>?
#
AC_CHECK_FUNCS(ffs)
if test "$ac_cv_func_ffs" = yes; then
#
# We have ffs(); is it declared in <strings.h>?
#
# This test fails if we don't have <strings.h> or if we do
# but it doesn't declare ffs().
#
AC_CHECK_DECL(ffs,
[
AC_DEFINE(STRINGS_H_DECLARES_FFS,,
[Define to 1 if strings.h declares `ffs'])
],,
[
#include <strings.h>
])
fi
#
# Do this before checking for ether_hostton(), as it's a
# "getaddrinfo()-ish function".
#
AC_LBL_LIBRARY_NET
#
# Check for reentrant versions of getnetbyname_r(), as provided by
# Linux (glibc), Solaris/IRIX, and AIX (with three different APIs!).
# If we don't find one, we just use getnetbyname(), which uses
# thread-specific data on many platforms, but doesn't use it on
# NetBSD or OpenBSD, and may not use it on older versions of other
# platforms.
#
# Only do the check if we have a declaration of getnetbyname_r();
# without it, we can't check which API it has. (We assume that
# if there's a declaration, it has a prototype, so that the API
# can be checked.)
#
AC_CHECK_DECL(getnetbyname_r,
[
AC_MSG_CHECKING([for the Linux getnetbyname_r()])
AC_TRY_LINK(
[#include <netdb.h>],
[
struct netent netent_buf;
char buf[1024];
struct netent *resultp;
int h_errnoval;
return getnetbyname_r((const char *)0, &netent_buf, buf, sizeof buf, &resultp, &h_errnoval);
],
[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_LINUX_GETNETBYNAME_R, 1,
[define if we have the Linux getnetbyname_r()])
],
[
AC_MSG_RESULT(no)
AC_MSG_CHECKING([for Solaris/IRIX getnetbyname_r()])
AC_TRY_LINK(
[#include <netdb.h>],
[
struct netent netent_buf;
char buf[1024];
return getnetbyname_r((const char *)0, &netent_buf, buf, (int)sizeof buf) != NULL;
],
[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SOLARIS_IRIX_GETNETBYNAME_R, 1,
[define if we have the Solaris/IRIX getnetbyname_r()])
],
[
AC_MSG_RESULT(no)
AC_MSG_CHECKING([for AIX getnetbyname_r()])
AC_TRY_LINK(
[#include <netdb.h>],
[
struct netent netent_buf;
struct netent_data net_data;
return getnetbyname_r((const char *)0, &netent_buf, &net_data);
],
[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_AIX_GETNETBYNAME_R, 1,
[define if we have the AIX getnetbyname_r()])
],
[
AC_MSG_RESULT(no)
])
])
])
],,[#include <netdb.h>])
#
# Check for reentrant versions of getprotobyname_r(), as provided by
# Linux (glibc), Solaris/IRIX, and AIX (with three different APIs!).
# If we don't find one, we just use getprotobyname(), which uses
# thread-specific data on many platforms, but doesn't use it on
# NetBSD or OpenBSD, and may not use it on older versions of other
# platforms.
#
# Only do the check if we have a declaration of getprotobyname_r();
# without it, we can't check which API it has. (We assume that
# if there's a declaration, it has a prototype, so that the API
# can be checked.)
#
AC_CHECK_DECL(getprotobyname_r,
[
AC_MSG_CHECKING([for the Linux getprotobyname_r()])
AC_TRY_LINK(
[#include <netdb.h>],
[
struct protoent protoent_buf;
char buf[1024];
struct protoent *resultp;
return getprotobyname_r((const char *)0, &protoent_buf, buf, sizeof buf, &resultp);
],
[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_LINUX_GETPROTOBYNAME_R, 1,
[define if we have the Linux getprotobyname_r()])
],
[
AC_MSG_RESULT(no)
AC_MSG_CHECKING([for Solaris/IRIX getprotobyname_r()])
AC_TRY_LINK(
[#include <netdb.h>],
[
struct protoent protoent_buf;
char buf[1024];
return getprotobyname_r((const char *)0, &protoent_buf, buf, (int)sizeof buf) != NULL;
],
[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SOLARIS_IRIX_GETPROTOBYNAME_R, 1,
[define if we have the Solaris/IRIX getprotobyname_r()])
],
[
AC_MSG_RESULT(no)
AC_MSG_CHECKING([for AIX getprotobyname_r()])
AC_TRY_LINK(
[#include <netdb.h>],
[
struct protoent protoent_buf;
struct protoent_data proto_data;
return getprotobyname_r((const char *)0, &protoent_buf, &proto_data);
],
[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_AIX_GETPROTOBYNAME_R, 1,
[define if we have the AIX getprotobyname_r()])
],
[
AC_MSG_RESULT(no)
])
])
])
],,[#include <netdb.h>])
#
# You are in a twisty little maze of UN*Xes, all different.
# Some might not have ether_hostton().
# 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_hostton)
if test "$ac_cv_func_ether_hostton" = yes; then
#
# OK, we have ether_hostton(). Is it declared in <net/ethernet.h>?
#
# This test fails if we don't have <net/ethernet.h> or if we do
# but it doesn't declare ether_hostton().
#
AC_CHECK_DECL(ether_hostton,
[
AC_DEFINE(NET_ETHERNET_H_DECLARES_ETHER_HOSTTON,,
[Define to 1 if net/ethernet.h declares `ether_hostton'])
],,
[
#include <net/ethernet.h>
])
#
# Did that succeed?
#
if test "$ac_cv_have_decl_ether_hostton" != 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_hostton().
#
# Unset ac_cv_have_decl_ether_hostton so we don't
# treat the previous failure as a cached value and
# suppress the next test.
#
unset ac_cv_have_decl_ether_hostton
AC_CHECK_DECL(ether_hostton,
[
AC_DEFINE(NETINET_ETHER_H_DECLARES_ETHER_HOSTTON,,
[Define to 1 if netinet/ether.h declares `ether_hostton'])
],,
[
#include <netinet/ether.h>
])
fi
#
# Did that succeed?
#
if test "$ac_cv_have_decl_ether_hostton" != yes; then
#
# No, how about <sys/ethernet.h>, as on Solaris 10
# and later?
#
# This test fails if we don't have <sys/ethernet.h>
# or if we do but it doesn't declare ether_hostton().
#
# Unset ac_cv_have_decl_ether_hostton so we don't
# treat the previous failure as a cached value and
# suppress the next test.
#
unset ac_cv_have_decl_ether_hostton
AC_CHECK_DECL(ether_hostton,
[
AC_DEFINE(SYS_ETHERNET_H_DECLARES_ETHER_HOSTTON,,
[Define to 1 if sys/ethernet.h declares `ether_hostton'])
],,
[
#include <sys/ethernet.h>
])
fi
#
# Did that succeed?
#
if test "$ac_cv_have_decl_ether_hostton" != 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_hostton(), we should have
# networking, and if we have networking, we should
# have <arapa/inet.h>) or if we do but it doesn't
# declare ether_hostton().
#
# Unset ac_cv_have_decl_ether_hostton so we don't
# treat the previous failure as a cached value and
# suppress the next test.
#
unset ac_cv_have_decl_ether_hostton
AC_CHECK_DECL(ether_hostton,
[
AC_DEFINE(ARPA_INET_H_DECLARES_ETHER_HOSTTON,,
[Define to 1 if arpa/inet.h declares `ether_hostton'])
],,
[
#include <arpa/inet.h>
])
fi
#
# Did that succeed?
#
if test "$ac_cv_have_decl_ether_hostton" != yes; then
#
# No, how about <netinet/if_ether.h>?
# On some platforms, it requires <net/if.h> and
# <netinet/in.h>, and we always include it with
# both of them, so test it with both of them.
#
# This test fails if we don't have <netinet/if_ether.h>
# and the headers we include before it, or if we do but
# <netinet/if_ether.h> doesn't declare ether_hostton().
#
# Unset ac_cv_have_decl_ether_hostton so we don't
# treat the previous failure as a cached value and
# suppress the next test.
#
unset ac_cv_have_decl_ether_hostton
AC_CHECK_DECL(ether_hostton,
[
AC_DEFINE(NETINET_IF_ETHER_H_DECLARES_ETHER_HOSTTON,,
[Define to 1 if netinet/if_ether.h declares `ether_hostton'])
],,
[
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
])
fi
#
# After all that, is ether_hostton() declared?
#
if test "$ac_cv_have_decl_ether_hostton" = yes; then
#
# Yes.
#
AC_DEFINE(HAVE_DECL_ETHER_HOSTTON, 1,
[Define to 1 if you have the declaration of `ether_hostton'])
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
#
# For various things that might use pthreads.
#
AC_CHECK_HEADER(pthread.h,
[
#
# OK, we have pthread.h. Do we have pthread_create in the
# system libraries?
#
AC_CHECK_FUNC(pthread_create,
[
#
# Yes.
#
ac_lbl_have_pthreads="found"
],
[
#
# No - do we have it in -lpthreads?
#
AC_CHECK_LIB(pthreads, pthread_create,
[
#
# Yes - add -lpthreads.
#
ac_lbl_have_pthreads="found"
PTHREAD_LIBS="$PTHREAD_LIBS -lpthreads"
],
[
#
# No - do we have it in -lpthread?
#
AC_CHECK_LIB(pthread, pthread_create,
[
#
# Yes - add -lpthread.
#
ac_lbl_have_pthreads="found"
PTHREAD_LIBS="$PTHREAD_LIBS -lpthread"
],
[
#
# No.
#
ac_lbl_have_pthreads="not found"
])
])
])
],
[
#
# We didn't find pthread.h.
#
ac_lbl_have_pthreads="not found"
]
)
dnl to pacify those who hate protochain insn
AC_MSG_CHECKING(if --disable-protochain option is specified)
AC_ARG_ENABLE(protochain,
AC_HELP_STRING([--disable-protochain],[disable \"protochain\" insn]))
case "x$enable_protochain" in
xyes) enable_protochain=enabled ;;
xno) enable_protochain=disabled ;;
x) enable_protochain=enabled ;;
esac
if test "$enable_protochain" = "disabled"; then
AC_DEFINE(NO_PROTOCHAIN,1,[do not use protochain])
fi
AC_MSG_RESULT(${enable_protochain})
#
# valgrindtest directly uses the native capture mechanism, but
# only tests with BPF and PF_PACKET sockets; only enable it if
# we have BPF or PF_PACKET sockets.
#
VALGRINDTEST_SRC=
AC_ARG_WITH(pcap,
AC_HELP_STRING([--with-pcap=TYPE],[use packet capture TYPE]))
if test ! -z "$with_pcap" ; then
V_PCAP="$withval"
else
#
# Check for a bunch of headers for various packet
# capture mechanisms.
#
AC_CHECK_HEADERS(net/bpf.h)
if test "$ac_cv_header_net_bpf_h" = yes; then
#
# Does it define BIOCSETIF?
# I.e., is it a header for an LBL/BSD-style capture
# mechanism, or is it just a header for a BPF filter
# engine? Some versions of Arch Linux, for example,
# have a net/bpf.h that doesn't define BIOCSETIF;
# as it's a Linux, it should use packet sockets,
# instead.
#
# We need:
#
# sys/types.h, because FreeBSD 10's net/bpf.h
# requires that various BSD-style integer types
# be defined;
#
# sys/time.h, because AIX 5.2 and 5.3's net/bpf.h
# doesn't include it but does use struct timeval
# in ioctl definitions;
#
# sys/ioctl.h and, if we have it, sys/ioccom.h,
# because net/bpf.h defines ioctls;
#
# net/if.h, because it defines some structures
# used in ioctls defined by net/bpf.h;
#
# sys/socket.h, because OpenBSD 5.9's net/bpf.h
# defines some structure fields as being
# struct sockaddrs;
#
# and net/bpf.h doesn't necessarily include all
# of those headers itself.
#
AC_MSG_CHECKING(if net/bpf.h defines BIOCSETIF)
AC_CACHE_VAL(ac_cv_lbl_bpf_h_defines_biocsetif,
AC_TRY_COMPILE(
[
#include <sys/types.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#ifdef HAVE_SYS_IOCCOM_H
#include <sys/ioccom.h>
#endif
#include <net/bpf.h>
#include <net/if.h>
],
[u_int i = BIOCSETIF;],
ac_cv_lbl_bpf_h_defines_biocsetif=yes,
ac_cv_lbl_bpf_h_defines_biocsetif=no))
AC_MSG_RESULT($ac_cv_lbl_bpf_h_defines_biocsetif)
fi
AC_CHECK_HEADERS(net/pfilt.h net/enet.h)
AC_CHECK_HEADERS(net/nit.h sys/net/nit.h)
AC_CHECK_HEADERS(linux/socket.h net/raw.h sys/dlpi.h)
if test "$ac_cv_lbl_bpf_h_defines_biocsetif" = yes; then
#
# BPF.
# Check this before DLPI, so that we pick BPF on
# Solaris 11 and later.
#
V_PCAP=bpf
#
# We have BPF, so build valgrindtest with "make test"
# on macOS and FreeBSD (add your OS once there's a
# valgrind for it).
#
case "$host_os" in
freebsd*|darwin*|linux*)
VALGRINDTEST_SRC=valgrindtest.c
;;
esac
elif test "$ac_cv_header_linux_socket_h" = yes; then
#
# No prizes for guessing this one.
#
V_PCAP=linux
#
# XXX - this won't work with older kernels that have
# SOCK_PACKET sockets but not PF_PACKET sockets.
#
VALGRINDTEST_SRC=valgrindtest.c
elif test "$ac_cv_header_net_pfilt_h" = yes; then
#
# DEC OSF/1, Digital UNIX, Tru64 UNIX
#
V_PCAP=pf
elif test "$ac_cv_header_net_enet_h" = yes; then
#
# Stanford Enetfilter.
#
V_PCAP=enet
elif test "$ac_cv_header_net_nit_h" = yes; then
#
# SunOS 4.x STREAMS NIT.
#
V_PCAP=snit
elif test "$ac_cv_header_sys_net_nit_h" = yes; then
#
# Pre-SunOS 4.x non-STREAMS NIT.
#
V_PCAP=nit
elif test "$ac_cv_header_net_raw_h" = yes; then
#
# IRIX snoop.
#
V_PCAP=snoop
elif test "$ac_cv_header_sys_dlpi_h" = yes; then
#
# DLPI on pre-Solaris 11 SunOS 5, HP-UX, possibly others.
#
V_PCAP=dlpi
else
#
# Nothing we support.
#
V_PCAP=null
AC_MSG_WARN(cannot determine packet capture interface)
AC_MSG_WARN((see the INSTALL doc for more info))
fi
fi
AC_MSG_CHECKING(packet capture type)
AC_MSG_RESULT($V_PCAP)
AC_SUBST(VALGRINDTEST_SRC)
#
# Do capture-mechanism-dependent tests.
#
case "$V_PCAP" in
dlpi)
#
# Needed for common functions used by pcap-[dlpi,libdlpi].c
#
SSRC="dlpisubs.c"
#
# Checks for some header files.
#
AC_CHECK_HEADERS(sys/bufmod.h sys/dlpi_ext.h)
#
# Checks to see if Solaris has the public libdlpi(3LIB) library.
# Note: The existence of /usr/include/libdlpi.h does not mean it is the
# public libdlpi(3LIB) version. Before libdlpi was made public, a
# private version also existed, which did not have the same APIs.
# Due to a gcc bug, the default search path for 32-bit libraries does
# not include /lib, we add it explicitly here.
# [http://bugs.opensolaris.org/view_bug.do?bug_id=6619485].
# Also, due to the bug above applications that link to libpcap with
# libdlpi will have to add "-L/lib" option to "configure".
#
saved_ldflags=$LDFLAGS
LDFLAGS="$LIBS -L/lib"
AC_CHECK_LIB(dlpi, dlpi_walk,
[
LIBS="-ldlpi $LIBS"
V_PCAP=libdlpi
AC_DEFINE(HAVE_LIBDLPI,1,[if libdlpi exists])
],
V_PCAP=dlpi)
LDFLAGS=$saved_ldflags
#
# Checks whether <sys/dlpi.h> is usable, to catch weird SCO
# versions of DLPI.
#
AC_MSG_CHECKING(whether <sys/dlpi.h> is usable)
AC_CACHE_VAL(ac_cv_sys_dlpi_usable,
AC_TRY_COMPILE(
[
#include <sys/types.h>
#include <sys/time.h>
#include <sys/dlpi.h>
],
[int i = DL_PROMISC_PHYS;],
ac_cv_sys_dlpi_usable=yes,
ac_cv_sys_dlpi_usable=no))
AC_MSG_RESULT($ac_cv_sys_dlpi_usable)
if test $ac_cv_sys_dlpi_usable = no ; then
AC_MSG_ERROR(<sys/dlpi.h> is not usable on this system; it probably has a non-standard DLPI)
fi
#
# Check to see if Solaris has the dl_passive_req_t struct defined
# in <sys/dlpi.h>.
# This check is for DLPI support for passive modes.
# See dlpi(7P) for more details.
#
AC_CHECK_TYPES(dl_passive_req_t,,,
[
#include <sys/types.h>
#include <sys/dlpi.h>
])
;;
linux)
#
# Do we have the wireless extensions?
#
AC_CHECK_HEADERS(linux/wireless.h, [], [],
[
#include <sys/socket.h>
#include <linux/if.h>
#include <linux/types.h>
])
#
# Do we have libnl?
#
AC_ARG_WITH(libnl,
AC_HELP_STRING([--without-libnl],[disable libnl support @<:@default=yes, on Linux, if present@:>@]),
with_libnl=$withval,with_libnl=if_available)
if test x$with_libnl != xno ; then
have_any_nl="no"
incdir=-I/usr/include/libnl3
libnldir=
case "$with_libnl" in
yes|if_available)
;;
*)
if test -d $withval; then
libnldir=-L${withval}/lib/.libs
incdir=-I${withval}/include
fi
;;
esac
#
# Try libnl 3.x first.
#
AC_CHECK_LIB(nl-3, nl_socket_alloc,
[
#
# Yes, we have libnl 3.x.
#
LIBS="${libnldir} -lnl-genl-3 -lnl-3 $LIBS"
AC_DEFINE(HAVE_LIBNL,1,[if libnl exists])
AC_DEFINE(HAVE_LIBNL_3_x,1,[if libnl exists and is version 3.x])
AC_DEFINE(HAVE_LIBNL_NLE,1,[libnl has NLE_FAILURE])
AC_DEFINE(HAVE_LIBNL_SOCKETS,1,[libnl has new-style socket api])
V_INCLS="$V_INCLS ${incdir}"
have_any_nl="yes"
],[], ${incdir} ${libnldir} -lnl-genl-3 -lnl-3 )
if test x$have_any_nl = xno ; then
#
# Try libnl 2.x
#
AC_CHECK_LIB(nl, nl_socket_alloc,
[
#
# Yes, we have libnl 2.x.
#
LIBS="${libnldir} -lnl-genl -lnl $LIBS"
AC_DEFINE(HAVE_LIBNL,1,[if libnl exists])
AC_DEFINE(HAVE_LIBNL_2_x,1,[if libnl exists and is version 2.x])
AC_DEFINE(HAVE_LIBNL_NLE,1,[libnl has NLE_FAILURE])
AC_DEFINE(HAVE_LIBNL_SOCKETS,1,[libnl has new-style socket api])
have_any_nl="yes"
])
fi
if test x$have_any_nl = xno ; then
#
# No, we don't; do we have libnl 1.x?
#
AC_CHECK_LIB(nl, nl_handle_alloc,
[
#
# Yes.
#
LIBS="${libnldir} -lnl $LIBS"
AC_DEFINE(HAVE_LIBNL,1,[if libnl exists])
have_any_nl="yes"
])
fi
if test x$have_any_nl = xno ; then
#
# No, we don't have libnl at all.
#
if test x$with_libnl = xyes ; then
AC_MSG_ERROR([libnl support requested but libnl not found])
fi
fi
fi
AC_CHECK_HEADERS(linux/ethtool.h,,,
[
AC_INCLUDES_DEFAULT
#include <linux/types.h>
])
#
# Check to see if struct tpacket_stats is defined in
# <linux/if_packet.h>. If so, then pcap-linux.c can use this
# to report proper statistics.
#
# -Scott Barron
#
AC_CHECK_TYPES(struct tpacket_stats,,,
[
#include <linux/if_packet.h>
])
#
# Check to see if the tpacket_auxdata struct has a tp_vlan_tci member.
#
# NOTE: any failure means we conclude that it doesn't have that
# member, so if we don't have tpacket_auxdata, we conclude it
# doesn't have that member (which is OK, as either we won't be
# using code that would use that member, or we wouldn't compile
# in any case).
AC_CHECK_MEMBERS([struct tpacket_auxdata.tp_vlan_tci],,,
[
#include <sys/types.h>
#include <linux/if_packet.h>
])
;;
bpf)
#
# Check whether we have the *BSD-style ioctls.
#
AC_CHECK_HEADERS(net/if_media.h)
#
# Check whether we have struct BPF_TIMEVAL.
#
AC_CHECK_TYPES(struct BPF_TIMEVAL,,,
[
#include <sys/types.h>
#include <sys/ioctl.h>
#ifdef HAVE_SYS_IOCCOM_H
#include <sys/ioccom.h>
#endif
#include <net/bpf.h>
])
;;
dag)
#
# --with-pcap=dag is the only way to get here, and it means
# "DAG support but nothing else"
#
V_DEFS="$V_DEFS -DDAG_ONLY"
xxx_only=yes
;;
dpdk)
#
# --with-pcap=dpdk is the only way to get here, and it means
# "DPDK support but nothing else"
#
V_DEFS="$V_DEFS -DDPDK_ONLY"
xxx_only=yes
;;
septel)
#
# --with-pcap=septel is the only way to get here, and it means
# "Septel support but nothing else"
#
V_DEFS="$V_DEFS -DSEPTEL_ONLY"
xxx_only=yes
;;
snf)
#
# --with-pcap=snf is the only way to get here, and it means
# "SNF support but nothing else"
#
V_DEFS="$V_DEFS -DSNF_ONLY"
xxx_only=yes
;;
null)
;;
*)
AC_MSG_ERROR($V_PCAP is not a valid pcap type)
;;
esac
dnl
dnl Now figure out how we get a list of interfaces and addresses,
dnl if we support capturing. Don't bother if we don't support
dnl capturing.
dnl
if test "$V_PCAP" != null
then
AC_CHECK_FUNC(getifaddrs,[
#
# We have "getifaddrs()"; make sure we have <ifaddrs.h>
# as well, just in case some platform is really weird.
#
AC_CHECK_HEADER(ifaddrs.h,[
#
# We have the header, so we use "getifaddrs()" to
# get the list of interfaces.
#
V_FINDALLDEVS=fad-getad.c
],[
#
# We don't have the header - give up.
# XXX - we could also fall back on some other
# mechanism, but, for now, this'll catch this
# problem so that we can at least try to figure
# out something to do on systems with "getifaddrs()"
# but without "ifaddrs.h", if there is something
# we can do on those systems.
#
AC_MSG_ERROR([Your system has getifaddrs() but doesn't have a usable <ifaddrs.h>.])
])
],[
#
# Well, we don't have "getifaddrs()", at least not with the
# libraries with which we've decided we need to link
# libpcap with, so we have to use some other mechanism.
#
# Note that this may happen on Solaris, which has
# getifaddrs(), but in -lsocket, not in -lxnet, so we
# won't find it if we link with -lxnet, which we want
# to do for other reasons.
#
# For now, we use either the SIOCGIFCONF ioctl or the
# SIOCGLIFCONF ioctl, preferring the latter if we have
# it; the latter is a Solarisism that first appeared
# in Solaris 8. (Solaris's getifaddrs() appears to
# be built atop SIOCGLIFCONF; using it directly
# avoids a not-all-that-useful middleman.)
#
AC_MSG_CHECKING(whether we have SIOCGLIFCONF)
AC_CACHE_VAL(ac_cv_lbl_have_siocglifconf,
AC_TRY_COMPILE(
[#include <sys/param.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/sockio.h>],
[ioctl(0, SIOCGLIFCONF, (char *)0);],
ac_cv_lbl_have_siocglifconf=yes,
ac_cv_lbl_have_siocglifconf=no))
AC_MSG_RESULT($ac_cv_lbl_have_siocglifconf)
if test $ac_cv_lbl_have_siocglifconf = yes ; then