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Diffstat (limited to '')
| -rw-r--r-- | configure.ac | 1027 |
1 files changed, 1027 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac new file mode 100644 index 0000000..18d59b6 --- /dev/null +++ b/configure.ac @@ -0,0 +1,1027 @@ +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(2.69) +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 "$ac_cv_prog_cc_c99" = "no"; then + AC_MSG_WARN([The C compiler does not support C99; there may be compiler errors]) +fi +AC_LBL_C_INIT(V_CCOPT, V_INCLS) +AC_LBL_C_INLINE + +AC_CHECK_HEADERS(fcntl.h rpc/rpc.h rpc/rpcent.h net/if.h) + +case "$host_os" in + +darwin*) + AC_ARG_ENABLE(universal, + AS_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], + [AS_HELP_STRING([--with-smi], + [link with libsmi (allows to load MIBs on the fly to decode SNMP packets) [default=yes, if available]])], + [], + [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 <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <smi.h> +int 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", ¤t, &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="$savedlibs" + ] + ) + ]) + ]) +fi + +AC_MSG_CHECKING([whether to enable the possibly-buggy SMB printer]) +AC_ARG_ENABLE([smb], + [AS_HELP_STRING([--enable-smb], + [enable possibly-buggy SMB printer [default=no]])], + [], + [enableval=no]) +case "$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( + [[ +#include <string.h> +/* 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) +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_MSG_RESULT(not while cross-compiling) + ] +) + +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 <netinet/ether.h> + #include <stdlib.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 |