dnl Macros that test for specific features. dnl This file is part of the Autoconf packaging for Ethereal. dnl Copyright (C) 1998-2000 by Gerald Combs. dnl dnl $Id$ dnl dnl This program is free software; you can redistribute it and/or modify dnl it under the terms of the GNU General Public License as published by dnl the Free Software Foundation; either version 2, or (at your option) dnl any later version. dnl dnl This program is distributed in the hope that it will be useful, dnl but WITHOUT ANY WARRANTY; without even the implied warranty of dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the dnl GNU General Public License for more details. dnl dnl You should have received a copy of the GNU General Public License dnl along with this program; if not, write to the Free Software dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA dnl 02111-1307, USA. dnl dnl As a special exception, the Free Software Foundation gives unlimited dnl permission to copy, distribute and modify the configure scripts that dnl are the output of Autoconf. You need not follow the terms of the GNU dnl General Public License when using or distributing such scripts, even dnl though portions of the text of Autoconf appear in them. The GNU dnl General Public License (GPL) does govern all other use of the material dnl that constitutes the Autoconf program. dnl dnl Certain portions of the Autoconf source text are designed to be copied dnl (in certain cases, depending on the input) into the output of dnl Autoconf. We call these the "data" portions. The rest of the Autoconf dnl source text consists of comments plus executable code that decides which dnl of the data portions to output in any given case. We call these dnl comments and executable code the "non-data" portions. Autoconf never dnl copies any of the non-data portions into its output. dnl dnl This special exception to the GPL applies to versions of Autoconf dnl released by the Free Software Foundation. When you make and dnl distribute a modified version of Autoconf, you may extend this special dnl exception to the GPL to apply to your modified version as well, *unless* dnl your modified version has the potential to copy into its output some dnl of the text that was the non-data portion of the version that you started dnl with. (In other words, unless your change moves or copies text from dnl the non-data portions to the data portions.) If your modification has dnl such potential, you must delete any notice of this special exception dnl to the GPL from your modified version. dnl dnl Written by David MacKenzie, with help from dnl Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor, dnl Roland McGrath, Noah Friedman, david d zuhn, and many others. # # AC_ETHEREAL_ADD_DASH_L # # Add to the variable specified as the first argument a "-L" flag for the # directory specified as the second argument, and, on Solaris, add a # "-R" flag for it as well. # # XXX - IRIX, and other OSes, may require some flag equivalent to # "-R" here. # AC_DEFUN([AC_ETHEREAL_ADD_DASH_L], [$1="$$1 -L$2" case "$host_os" in solaris*) $1="$$1 -R$2" ;; esac ]) # # AC_ETHEREAL_STRUCT_SA_LEN # dnl AC_STRUCT_ST_BLKSIZE extracted from the file in question, dnl "acspecific.m4" in GNU Autoconf 2.12, and turned into dnl AC_ETHEREAL_STRUCT_SA_LEN, which checks if "struct sockaddr" dnl has the 4.4BSD "sa_len" member, and defines HAVE_SA_LEN; that's dnl what's in this file. dnl Done by Guy Harris on 1998-11-14. dnl ### Checks for structure members AC_DEFUN([AC_ETHEREAL_STRUCT_SA_LEN], [AC_CACHE_CHECK([for sa_len in struct sockaddr], ac_cv_ethereal_struct_sa_len, [AC_TRY_COMPILE([#include #include ], [struct sockaddr s; s.sa_len;], ac_cv_ethereal_struct_sa_len=yes, ac_cv_ethereal_struct_sa_len=no)]) if test $ac_cv_ethereal_struct_sa_len = yes; then AC_DEFINE(HAVE_SA_LEN, 1, [Define if sa_len field exists in struct sockaddr]) fi ]) dnl dnl Check whether a given format can be used to print 64-bit integers dnl AC_DEFUN([AC_ETHEREAL_CHECK_64BIT_FORMAT], [ AC_MSG_CHECKING([whether %$1x can be used to format 64-bit integers]) AC_RUN_IFELSE( [ AC_LANG_SOURCE( [[ # ifdef HAVE_INTTYPES_H #include # endif #include #include #include main() { guint64 t = 1; char strbuf[16+1]; sprintf(strbuf, "%016$1x", t << 32); if (strcmp(strbuf, "0000000100000000") == 0) exit(0); else exit(1); } ]]) ], [ AC_DEFINE(PRId64, "$1d", [Format for printing 64-bit signed decimal numbers]) AC_DEFINE(PRIo64, "$1o", [Format for printing 64-bit unsigned octal numbers]) AC_DEFINE(PRIx64, "$1x", [Format for printing 64-bit unsigned hexadecimal numbers]) AC_DEFINE(PRIu64, "$1u", [Format for printing 64-bit unsigned decimal numbers]) AC_MSG_RESULT(yes) ], [ AC_MSG_RESULT(no) $2 ]) ]) # # AC_ETHEREAL_IPV6_STACK # # By Jun-ichiro "itojun" Hagino, # AC_DEFUN([AC_ETHEREAL_IPV6_STACK], [ v6type=unknown v6lib=none AC_MSG_CHECKING([ipv6 stack type]) for i in v6d toshiba kame inria zeta linux linux-glibc solaris8; do case $i in v6d) AC_EGREP_CPP(yes, [ #include #ifdef __V6D__ yes #endif], [v6type=$i; v6lib=v6; v6libdir=/usr/local/v6/lib; CFLAGS="-I/usr/local/v6/include $CFLAGS"]) ;; toshiba) AC_EGREP_CPP(yes, [ #include #ifdef _TOSHIBA_INET6 yes #endif], [v6type=$i; v6lib=inet6; v6libdir=/usr/local/v6/lib; CFLAGS="-DINET6 $CFLAGS"]) ;; kame) AC_EGREP_CPP(yes, [ #include #ifdef __KAME__ yes #endif], [v6type=$i; v6lib=inet6; v6libdir=/usr/local/v6/lib; CFLAGS="-DINET6 $CFLAGS"]) ;; inria) AC_EGREP_CPP(yes, [ #include #ifdef IPV6_INRIA_VERSION yes #endif], [v6type=$i; CFLAGS="-DINET6 $CFLAGS"]) ;; zeta) AC_EGREP_CPP(yes, [ #include #ifdef _ZETA_MINAMI_INET6 yes #endif], [v6type=$i; v6lib=inet6; v6libdir=/usr/local/v6/lib; CFLAGS="-DINET6 $CFLAGS"]) ;; linux) if test -d /usr/inet6; then v6type=$i v6lib=inet6 v6libdir=/usr/inet6 CFLAGS="-DINET6 $CFLAGS" fi ;; linux-glibc) AC_EGREP_CPP(yes, [ #include #if defined(__GLIBC__) && defined(__GLIBC_MINOR__) #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || __GLIBC__ > 2 yes #endif #endif], [v6type=$i; v6lib=inet6; CFLAGS="-DINET6 $CFLAGS"]) ;; solaris8) if test "`uname -s`" = "SunOS" && test "`uname -r`" = "5.8"; then v6type=$i v6lib=inet6 [CFLAGS="-DINET6 -DSOLARIS8_INET6 $CFLAGS"] fi ;; esac if test "$v6type" != "unknown"; then break fi done if test "$v6lib" != "none"; then for dir in $v6libdir /usr/local/v6/lib /usr/local/lib; do if test -d $dir -a -f $dir/lib$v6lib.a; then LIBS="-L$dir $LIBS -l$v6lib" break fi done enable_ipv6="yes" else enable_ipv6="no" fi AC_MSG_RESULT(["$v6type, $v6lib"]) ]) # # AC_ETHEREAL_GETHOSTBY_LIB_CHECK # # Checks whether we need "-lnsl" to get "gethostby*()", which we use # in "resolv.c". # # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in # GNU Autoconf 2.13; the comment came from there. # Done by Guy Harris on 2000-01-14. # AC_DEFUN([AC_ETHEREAL_GETHOSTBY_LIB_CHECK], [ # msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT, # to get the SysV transport functions. # chad@anasazi.com says the Pyramid MIS-ES running DC/OSx (SVR4) # needs -lnsl. # The nsl library prevents programs from opening the X display # on Irix 5.2, according to dickey@clark.net. AC_CHECK_FUNC(gethostbyname, , AC_CHECK_LIB(nsl, gethostbyname, NSL_LIBS="-lnsl")) AC_SUBST(NSL_LIBS) ]) # # AC_ETHEREAL_SOCKET_LIB_CHECK # # Checks whether we need "-lsocket" to get "socket()", which is used # by libpcap on some platforms - and, in effect, "gethostby*()" on # most if not all platforms (so that it can use NIS or DNS or... # to look up host names). # # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in # GNU Autoconf 2.13; the comment came from there. # Done by Guy Harris on 2000-01-14. # # We use "connect" because that's what AC_PATH_XTRA did. # AC_DEFUN([AC_ETHEREAL_SOCKET_LIB_CHECK], [ # lieder@skyler.mavd.honeywell.com says without -lsocket, # socket/setsockopt and other routines are undefined under SCO ODT # 2.0. But -lsocket is broken on IRIX 5.2 (and is not necessary # on later versions), says simon@lia.di.epfl.ch: it contains # gethostby* variants that don't use the nameserver (or something). # -lsocket must be given before -lnsl if both are needed. # We assume that if connect needs -lnsl, so does gethostbyname. AC_CHECK_FUNC(connect, , AC_CHECK_LIB(socket, connect, SOCKET_LIBS="-lsocket", AC_MSG_ERROR(Function 'socket' not found.), $NSL_LIBS)) AC_SUBST(SOCKET_LIBS) ]) # # AC_ETHEREAL_PCAP_CHECK # AC_DEFUN([AC_ETHEREAL_PCAP_CHECK], [ if test -z "$pcap_dir" then # Pcap header checks # XXX need to set a var AC_CHECK_HEADER(pcap.h,,) # # The user didn't specify a directory in which libpcap resides; # we assume that the current library search path will work, # but we may have to look for the header in a "pcap" # subdirectory of "/usr/include" or "/usr/local/include", # as some systems apparently put "pcap.h" in a "pcap" # subdirectory, and we also check "$prefix/include" - and # "$prefix/include/pcap", in case $prefix is set to # "/usr/include" or "/usr/local/include". # # XXX - should we just add "$prefix/include" to the include # search path and "$prefix/lib" to the library search path? # AC_MSG_CHECKING(for extraneous pcap header directories) found_pcap_dir="" pcap_dir_list="/usr/include/pcap $prefix/include/pcap $prefix/include" if test "x$ac_cv_enable_usr_local" = "xyes" ; then pcap_dir_list="$pcap_dir_list /usr/local/include/pcap" fi for pcap_dir in $pcap_dir_list do if test -d $pcap_dir ; then if test x$pcap_dir != x/usr/include -a x$pcap_dir != x/usr/local/include ; then CFLAGS="$CFLAGS -I$pcap_dir" CPPFLAGS="$CPPFLAGS -I$pcap_dir" fi found_pcap_dir=" $found_pcap_dir -I$pcap_dir" break fi done if test "$found_pcap_dir" != "" ; then AC_MSG_RESULT(found --$found_pcap_dir added to CFLAGS) else AC_MSG_RESULT(not found) fi else # # The user specified a directory in which libpcap resides, # so add the "include" subdirectory of that directory to # the include file search path and the "lib" subdirectory # of that directory to the library search path. # # XXX - if there's also a libpcap in a directory that's # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't # make us find the version in the specified directory, # as the compiler and/or linker will search that other # directory before it searches the specified directory. # CFLAGS="$CFLAGS -I$pcap_dir/include" CPPFLAGS="$CPPFLAGS -I$pcap_dir/include" AC_ETHEREAL_ADD_DASH_L(LDFLAGS, $pcap_dir/lib) fi # Pcap header check AC_CHECK_HEADER(pcap.h,, AC_MSG_ERROR([[Header file pcap.h not found; if you installed libpcap from source, did you also do \"make install-incl\", and if you installed a binary package of libpcap, is there also a developer's package of libpcap, and did you also install that package?]])) # # Check to see if we find "pcap_open_live" in "-lpcap". # AC_CHECK_LIB(pcap, pcap_open_live, [ PCAP_LIBS=-lpcap AC_DEFINE(HAVE_LIBPCAP, 1, [Define to use libpcap library]) ], [ AC_MSG_CHECKING([for pcap_open_live in -lpcap -lcfg -lodm]) ac_save_LIBS="$LIBS" LIBS="-lpcap -lcfg -lodm" AC_TRY_LINK( [ # include ], [ pcap_open_live(NULL, 0, 0, 0, NULL); ], [ AC_MSG_RESULT([yes]) PCAP_LIBS="-lpcap -lcfg -lodm" AC_DEFINE(HAVE_LIBPCAP, 1, [Define to use libpcap library]) ], [ AC_MSG_RESULT([no]) AC_MSG_ERROR([Library libpcap not found.]) ]) LIBS=$ac_save_LIBS ], $SOCKET_LIBS $NSL_LIBS) AC_SUBST(PCAP_LIBS) # # Check whether various variables and functions are defined by # libpcap. # ac_save_LIBS="$LIBS" AC_MSG_CHECKING(whether pcap_version is defined by libpcap) LIBS="$PCAP_LIBS $SOCKET_LIBS $NSL_LIBS $LIBS" AC_TRY_LINK( [ # include extern char *pcap_version; ], [ printf ("%s\n", pcap_version); ], ac_cv_pcap_version_defined=yes, ac_cv_pcap_version_defined=no, [echo $ac_n "cross compiling; assumed OK... $ac_c"]) if test "$ac_cv_pcap_version_defined" = yes ; then AC_MSG_RESULT(yes) AC_DEFINE(HAVE_PCAP_VERSION, 1, [Define if libpcap version is known]) else AC_MSG_RESULT(no) fi AC_CHECK_FUNCS(pcap_open_dead pcap_freecode) # # Later versions of Mac OS X 10.3[.x] ship a pcap.h that # doesn't define pcap_if_t but ship an 0.8[.x] libpcap, # so the library has "pcap_findalldevs()", but pcap.h # doesn't define "pcap_if_t" so you can't actually *use* # "pcap_findalldevs()". # # That even appears to be true of systems shipped with # 10.3.4, so it doesn't appear only to be a case of # Software Update not updating header files. # # (You can work around this by installing the 0.8 header # files.) # AC_CACHE_CHECK([whether pcap_findalldevs is present and usable], [ac_cv_func_pcap_findalldevs], [ AC_LINK_IFELSE( [ AC_LANG_SOURCE( [[ #include main() { pcap_if_t *devpointer; char errbuf[1]; pcap_findalldevs(&devpointer, errbuf); } ]]) ], [ ac_cv_func_pcap_findalldevs=yes ], [ ac_cv_func_pcap_findalldevs=no ]) ]) # # Don't check for other new routines that showed up after # "pcap_findalldevs()" if we don't have a usable # "pcap_findalldevs()", so we don't end up using them if the # "pcap.h" is crufty and old and doesn't declare them. # if test $ac_cv_func_pcap_findalldevs = "yes" ; then AC_DEFINE(HAVE_PCAP_FINDALLDEVS, 1, [Define to 1 if you have the `pcap_findalldevs' function and a pcap.h that declares pcap_if_t.]) AC_CHECK_FUNCS(pcap_datalink_val_to_name pcap_datalink_name_to_val) AC_CHECK_FUNCS(pcap_list_datalinks pcap_set_datalink pcap_lib_version) fi LIBS="$ac_save_LIBS" ]) # # AC_ETHEREAL_ZLIB_CHECK # AC_DEFUN([AC_ETHEREAL_ZLIB_CHECK], [ if test "x$zlib_dir" != "x" then # # The user specified a directory in which zlib resides, # so add the "include" subdirectory of that directory to # the include file search path and the "lib" subdirectory # of that directory to the library search path. # # XXX - if there's also a zlib in a directory that's # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't # make us find the version in the specified directory, # as the compiler and/or linker will search that other # directory before it searches the specified directory. # ethereal_save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -I$zlib_dir/include" ethereal_save_CPPFLAGS="$CPPFLAGS" CPPFLAGS="$CPPFLAGS -I$zlib_dir/include" ethereal_save_LIBS="$LIBS" AC_ETHEREAL_ADD_DASH_L(LIBS, $zlib_dir/lib) fi # # Make sure we have "zlib.h". If we don't, it means we probably # don't have zlib, so don't use it. # AC_CHECK_HEADER(zlib.h,, [ if test "x$zlib_dir" != "x" then # # The user used "--with-zlib=" to specify a directory # containing zlib, but we didn't find the header file # there; that either means they didn't specify the # right directory or are confused about whether zlib # is, in fact, installed. Report the error and give up. # AC_MSG_ERROR([zlib header not found in directory specified in --with-zlib]) else if test "x$want_zlib" = "xyes" then # # The user tried to force us to use the library, but we # couldn't find the header file; report an error. # AC_MSG_ERROR(Header file zlib.h not found.) else # # We couldn't find the header file; don't use the # library, as it's probably not present. # want_zlib=no fi fi ]) if test "x$want_zlib" != "xno" then # # Well, we at least have the zlib header file. # # Check for "gzgets()" in zlib, because we need it, but # some older versions of zlib don't have it. It appears # from the zlib ChangeLog that any released version of zlib # with "gzgets()" should have the other routines we # depend on, such as "gzseek()", "gztell()", and "zError()". # # Another reason why we require "gzgets()" is that # some versions of zlib that didn't have it, such # as 1.0.8, had a bug in "gzseek()" that meant that it # doesn't work correctly on uncompressed files; this # means we cannot use version 1.0.8. (Unfortunately, # that's the version that comes with recent X11 source, # and many people who install XFree86 on their Slackware # boxes don't realize that they should configure it to # use the native zlib rather than building and installing # the crappy old version that comes with XFree86.) # # I.e., we can't just avoid using "gzgets()", as # versions of zlib without "gzgets()" are likely to have # a broken "gzseek()". # AC_CHECK_LIB(z, gzgets, [ if test "x$zlib_dir" != "x" then # # Put the "-I" and "-L" flags for zlib at # the beginning of CFLAGS, CPPFLAGS, and # LIBS. # LIBS="" AC_ETHEREAL_ADD_DASH_L(LIBS, $zlib_dir/lib) LIBS="$LIBS -lz $ethereal_save_LIBS" else LIBS="-lz $LIBS" fi AC_DEFINE(HAVE_LIBZ, 1, [Define to use libz library]) ],[ if test "x$zlib_dir" != "x" then # # Restore the versions of CFLAGS, CPPFLAGS, # and LIBS before we added the "-with-zlib=" # directory, as we didn't actually find # zlib there, or didn't find a zlib that # contains gzgets there. # CFLAGS="$ethereal_save_CFLAGS" CPPFLAGS="$ethereal_save_CPPFLAGS" LIBS="$ethereal_save_LIBS" fi want_zlib=no ]) fi if test "x$want_zlib" != "xno" then # # Well, we at least have the zlib header file and a zlib # with "gzgets()". # # Now check for "gzgets()" in zlib when linking with the # linker flags for GTK+ applications; people often grab # XFree86 source and build and install it on their systems, # and they appear sometimes to misconfigure XFree86 so that, # even on systems with zlib, it assumes there is no zlib, # so the XFree86 build process builds and installs its # own zlib in the X11 library directory. # # The XFree86 zlib is an older version that lacks # "gzgets()", and that's the zlib with which Ethereal # gets linked, so the build of Ethereal fails. # ac_save_CFLAGS="$CFLAGS" ac_save_LIBS="$LIBS" CFLAGS="$CFLAGS $GTK_CFLAGS" LIBS="$GTK_LIBS -lz $LIBS" AC_MSG_CHECKING([for gzgets missing when linking with X11]) AC_TRY_LINK_FUNC(gzgets, AC_MSG_RESULT(no), [ AC_MSG_RESULT(yes) AC_MSG_ERROR(old zlib found when linking with X11 - get rid of old zlib.) ]) CFLAGS="$ac_save_CFLAGS" LIBS="$ac_save_LIBS" fi ]) # # AC_ETHEREAL_LIBPCRE_CHECK # AC_DEFUN([AC_ETHEREAL_LIBPCRE_CHECK], [ if test "x$pcre_dir" != "x" then # # The user specified a directory in which libpcre resides, # so add the "include" subdirectory of that directory to # the include file search path and the "lib" subdirectory # of that directory to the library search path. # # XXX - if there's also a libpcre in a directory that's # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't # make us find the version in the specified directory, # as the compiler and/or linker will search that other # directory before it searches the specified directory. # ethereal_save_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -I$pcre_dir/include" ethereal_save_CPPFLAGS="$CPPFLAGS" CPPFLAGS="$CPPFLAGS -I$pcre_dir/include" ethereal_save_LIBS="$LIBS" LIBS="$LIBS -lpcre" ethereal_save_LDFLAGS="$LDFLAGS" LDFLAGS="$LDFLAGS -L$pcre_dir/lib" fi # # Make sure we have "pcre.h". If we don't, it means we probably # don't have libpcre, so don't use it. # AC_CHECK_HEADER(pcre.h,, [ if test "x$pcre_dir" != "x" then # # The user used "--with-pcre=" to specify a directory # containing libpcre, but we didn't find the header file # there; that either means they didn't specify the # right directory or are confused about whether libpcre # is, in fact, installed. Report the error and give up. # AC_MSG_ERROR([libpcre header not found in directory specified in --with-pcre]) else if test "x$want_pcre" = "xyes" then # # The user tried to force us to use the library, but we # couldn't find the header file; report an error. # AC_MSG_ERROR(Header file pcre.h not found.) else # # We couldn't find the header file; don't use the # library, as it's probably not present. # want_pcre=no fi fi ]) if test "x$want_pcre" != "xno" then # # Well, we at least have the pcre header file. # # We're only using standard functions from libpcre, # so we don't need to perform extra checks. # AC_CHECK_LIB(pcre, pcre_compile, [ if test "x$pcre_dir" != "x" then # # Put the "-I" and "-L" flags for pcre at # the beginning of CFLAGS, CPPFLAGS, # LDFLAGS, and LIBS. # PCRE_LIBS="-L$pcre_dir/lib -lpcre $ethereal_save_LIBS" else PCRE_LIBS="-lpcre" fi AC_DEFINE(HAVE_LIBPCRE, 1, [Define to use libpcre library]) ],[ if test "x$pcre_dir" != "x" then # # Restore the versions of CFLAGS, CPPFLAGS, # LDFLAGS, and LIBS before we added the # "--with-pcre=" directory, as we didn't # actually find pcre there. # CFLAGS="$ethereal_save_CFLAGS" CPPFLAGS="$ethereal_save_CPPFLAGS" LDFLAGS="$ethereal_save_LDFLAGS" LIBS="$ethereal_save_LIBS" PCRE_LIBS="" fi want_pcre=no ]) AC_SUBST(PCRE_LIBS) fi ]) # # AC_ETHEREAL_NETSNMP_CHECK # AC_DEFUN([AC_ETHEREAL_NETSNMP_CHECK], [ dnl get the net-snmp-config binary if test "x$netsnmpconfig" = "x" ; then # # The user didn't specify where net-snmp-config is # located; search for it. # AC_PATH_PROG(NETSNMPCONFIG, net-snmp-config) else NETSNMPCONFIG=$netsnmpconfig if test ! -x $NETSNMPCONFIG -o ! -f $NETSNMPCONFIG ; then NETSNMPCONFIG=$netsnmpconfig/bin/net-snmp-config if test ! -x $NETSNMPCONFIG -o ! -f $NETSNMPCONFIG ; then AC_MSG_ERROR(Invalid net-snmp-config: $netsnmpconfig) fi fi fi # # XXX - check whether $NETSNMPCONFIG is executable? # if test "x$NETSNMPCONFIG" != "xno" -a "x$NETSNMPCONFIG" != "x" -a -x "$NETSNMPCONFIG" ; then # We already did that if it was set; presumably AC_PATH_PROG # will fail if it doesn't find an executable version. # if test "x$NETSNMPCONFIG" != "x" ; then dnl other choices for flags to use here: could also use dnl --prefix or --exec-prefix if you don't want the full list. # # Save the current settings of CFLAGS and CPPFLAGS, and add # the output of "$NETSNMPCONFIG --cflags" to it, so that when # searching for the Net-SNMP headers, we look in whatever # directory that output specifies. # ethereal_save_CFLAGS="$CFLAGS" ethereal_save_CPPFLAGS="$CPPFLAGS" CFLAGS="$CFLAGS `$NETSNMPCONFIG --cflags`" CPPFLAGS="$CPPFLAGS `$NETSNMPCONFIG --cflags`" AC_CHECK_HEADERS(net-snmp/net-snmp-config.h net-snmp/library/default_store.h) if test "x$ac_cv_header_net_snmp_net_snmp_config_h" = "xyes" -a "x$ac_cv_header_net_snmp_library_default_store_h" = "xyes" ; then SNMP_LIBS=`$NETSNMPCONFIG --libs` if echo "$SNMP_LIBS" | grep crypto >/dev/null && test "x$SSL_LIBS" = "x"; then if test "x$want_netsnmp" = "xyes" ; then AC_MSG_ERROR(Net-SNMP requires openssl but ssl not enabled) else AC_MSG_RESULT(Net-SNMP requires openssl but ssl not enabled - disabling Net-SNMP) fi CFLAGS="$ethereal_save_CFLAGS" CPPFLAGS="$ethereal_save_CPPFLAGS" SNMP_LIBS= else AC_DEFINE(HAVE_NET_SNMP, 1, [Define to enable support for Net-SNMP]) have_net_snmp="yes" fi else if test "x$want_netsnmp" = "xyes" ; then AC_MSG_ERROR(Net-SNMP not found) else # # Restore the versions of CFLAGS and # CPPFLAGS before we added the output # of '$NETSNMPCONFIG --cflags", as we # didn't actually find Net-SNMP there. # CFLAGS="$ethereal_save_CFLAGS" CPPFLAGS="$ethereal_save_CPPFLAGS" fi fi fi ]) # # AC_ETHEREAL_UCDSNMP_CHECK # AC_DEFUN([AC_ETHEREAL_UCDSNMP_CHECK], [ if test "x$ucdsnmp_dir" != "x" then # # The user specified a directory in which UCD SNMP resides, # so add the "include" subdirectory of that directory to # the include file search path and the "lib" subdirectory # of that directory to the library search path. # # XXX - if there's also a libpcap in a directory that's # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't # make us find the version in the specified directory, # as the compiler and/or linker will search that other # directory before it searches the specified directory. # CFLAGS="$CFLAGS -I$ucdsnmp_dir/include" CPPFLAGS="$CPPFLAGS -I$ucdsnmp_dir/include" AC_ETHEREAL_ADD_DASH_L(LDFLAGS, $ucdsnmp_dir/lib) fi # # Check for one of the UCD SNMP header files we include, # to see whether we have UCD SNMP installed. # AC_CHECK_HEADER(ucd-snmp/ucd-snmp-config.h, [ # # UCD SNMP or Net-SNMP might require various helper # libraries on various platforms, such as "-ldes425" # in "/usr/kerberos/lib" on some versions of Red # Hat Linux, or "-lkstat" on Solaris. # # It might also require "-lcrypto" on some platforms; # if the user didn't specify --with-ssl, we check # whether it would have made a difference and, if so, # we tell the user that they needed to request it. # (There are annoying licensing issues with it and # GPL'ed code, so we don't include it by default.) # # XXX - autoconf really needs a way to test for # a given routine in a given library *and* to test # whether additional "-L"/"-R"/whatever flags are # needed *before* the "-l" flag for the library # and to test whether additional libraries are # needed after the library *and* to cache all that # information. # ethereal_save_LIBS="$LIBS" found_sprint_realloc_objid=no for extras in "" "-L/usr/kerberos/lib -ldes425" "-lkstat" do LIBS="-lsnmp $extras $SOCKET_LIBS $NSL_LIBS $SSL_LIBS" if test -z "$extras" then AC_MSG_CHECKING([whether UCD SNMP includes sprint_realloc_objid]) else AC_MSG_CHECKING([whether UCD SNMP includes sprint_realloc_objid (linking with $extras)]) fi AC_TRY_LINK( [ ], [ sprint_realloc_objid(); ], [ # # We found "sprint_realloc_objid()", # and required the libraries in # extras as well. # AC_MSG_RESULT(yes) SNMP_LIBS="-lsnmp $extras"; break; found_sprint_realloc_objid=yes break ], [ # # The link failed. If they didn't ask # for SSL, try linking with -lcrypto # as well, and if *that* succeeds, # tell them they'll need to specify # --want-ssl. # AC_MSG_RESULT(no) if test "x$want_ssl" = "xno" then LIBS="$LIBS -lcrypto" AC_TRY_LINK( [ ], [ sprint_realloc_objid(); ], [ # # It worked with -lcrypto; tell # them they'll need to specify # --with-ssl. # AC_MSG_ERROR([UCD SNMP requires -lcrypto but --with-ssl not specified]) ]) fi ]) done LIBS="$ethereal_save_LIBS" # # If we didn't find "sprint_realloc_objid()", fail. # Either the user needs a newer version of UCD SNMP # with "sprint_realloc_objid()", or they may need to # specify "--with-ssl". # if test "$found_snmp_sprint_realloc_objid" = no; then AC_MSG_ERROR([UCD SNMP header files found, but sprint_realloc_objid not found in SNMP library.]) fi # # We found it, so we have UCD SNMP. # AC_DEFINE(HAVE_UCD_SNMP, 1, [Define to enable support for UCD-SNMP]) have_ucd_snmp="yes" ],[ # # No, we don't have it. # If the user explicitly asked for UCD SNMP, fail, # otherwise just don't use the UCD SNMP library. # if test "x$want_ucdsnmp" = "xyes" ; then AC_MSG_ERROR(Header file ucd-snmp/snmp.h not found.) fi ]) ]) # # AC_ETHEREAL_RPM_CHECK # Looks for the rpm program, and checks to see if we can redefine "_topdir". # AC_DEFUN([AC_ETHEREAL_RPM_CHECK], [ AC_CHECK_PROG(ac_cv_ethereal_have_rpm, rpm, "yes", "no") if test "x$ac_cv_ethereal_have_rpm" = "xyes"; then rpm --define '_topdir /tmp' > /dev/null 2>&1 AC_MSG_CHECKING(to see if we can redefine _topdir) if test $? -eq 0 ; then AC_MSG_RESULT(yes) HAVE_RPM=yes else AC_MSG_RESULT(no. You'll have to build packages manually.) HAVE_RPM=no fi fi ]) # # AC_ETHEREAL_GNU_SED_CHECK # Checks if GNU sed is the first sed in PATH. # AC_DEFUN([AC_ETHEREAL_GNU_SED_CHECK], [ AC_MSG_CHECKING(for GNU sed as first sed in PATH) if ( sh -c "sed --version" /dev/null | grep "GNU sed" 2>&1 > /dev/null ) ; then AC_MSG_RESULT(yes) HAVE_GNU_SED=yes else AC_MSG_RESULT(no) HAVE_GNU_SED=no fi ]) # # AC_ETHEREAL_ADNS_CHECK # AC_DEFUN([AC_ETHEREAL_ADNS_CHECK], [ want_adns=defaultyes if test "x$want_adns" = "xdefaultyes"; then want_adns=yes withval=/usr/local if test -d "$withval"; then AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${withval}/lib) fi fi if test "x$want_adns" = "xyes"; then AC_CHECK_LIB(adns, adns_init, [ ADNS_LIBS=-ladns AC_DEFINE(HAVE_GNU_ADNS, 1, [Define to use GNU ADNS library]) have_good_adns=yes ],, $SOCKET_LIBS $NSL_LIBS ) else AC_MSG_RESULT(not required) fi ]) # # AC_ETHEREAL_KRB5_CHECK # AC_DEFUN([AC_ETHEREAL_KRB5_CHECK], [ ethereal_save_CFLAGS="$CFLAGS" ethereal_save_CPPFLAGS="$CPPFLAGS" if test "x$krb5_dir" != "x" then # # The user specified a directory in which kerberos resides, # so add the "include" subdirectory of that directory to # the include file search path and the "lib" subdirectory # of that directory to the library search path. # # XXX - if there's also a kerberos in a directory that's # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't # make us find the version in the specified directory, # as the compiler and/or linker will search that other # directory before it searches the specified directory. # CFLAGS="$CFLAGS -I$krb5_dir/include" CPPFLAGS="$CPPFLAGS -I$krb5_dir/include" ac_heimdal_version=`grep heimdal $krb5_dir/include/krb5.h | head -n 1 | sed 's/^.*heimdal.*$/HEIMDAL/'` ac_mit_version=`grep 'Massachusetts Institute of Technology' $krb5_dir/include/krb5.h | head -n 1 | sed 's/^.*Massachusetts Institute of Technology.*$/MIT/'` ac_krb5_version="$ac_heimdal_version$ac_mit_version" if test "x$ac_krb5_version" = "xHEIMDAL" KRB5_LIBS="-L$krb5_dir/lib -lkrb5 -lasn1 $SSL_LIBS -lroken -lcrypt" then KRB5_LIBS="-L$krb5_dir/lib -lkrb5 -lk5crypto -lcom_err" fi if test "x$ac_krb5_version" = "xMIT" then AC_DEFINE(HAVE_MIT_KERBEROS, 1, [Define to use MIT kerberos]) fi else AC_PATH_PROG(KRB5_CONFIG, krb5-config) if test -x "$KRB5_CONFIG" then KRB5_FLAGS=`"$KRB5_CONFIG" --cflags` KRB5_LIBS=`"$KRB5_CONFIG" --libs` CFLAGS="$CFLAGS $KRB5_FLAGS" CPPFLAGS="$CPPFLAGS $KRB5_FLAGS" # # If -lcrypto is in KRB5_FLAGS, we require it to build # with Heimdal/MIT. We don't want to built with it by # default, due to annoying license incompatibilities # between the OpenSSL license and the GPL, so: # # if SSL_LIBS is set to a non-empty string, we # remove -lcrypto from KRB5_LIBS and replace # it with SSL_LIBS; # # if SSL_LIBS is not set to a non-empty string # we fail with an appropriate error message. # case "$KRB5_LIBS" in *-lcrypto*) if test ! -z "$SSL_LIBS" then KRB5_LIBS=`echo $KRB5_LIBS | sed 's/-lcrypto//'` KRB5_LIBS="$KRB5_LIBS $SSL_LIBS" else AC_MSG_ERROR([Kerberos library requires -lcrypto but --with-ssl not specified]) fi ;; esac ac_krb5_version=`"$KRB5_CONFIG" --version | head -n 1 | sed -e 's/^.*heimdal.*$/HEIMDAL/' -e 's/^Kerberos .*$/MIT/'` fi fi # # Make sure we have "krb5.h". If we don't, it means we probably # don't have kerberos, so don't use it. # AC_CHECK_HEADER(krb5.h,, [ if test "x$krb5_dir" != "x" then # # The user used "--with-krb5=" to specify a directory # containing kerberos, but we didn't find the header file # there; that either means they didn't specify the # right directory or are confused about whether kerberos # is, in fact, installed. Report the error and give up. # AC_MSG_ERROR([kerberos header not found in directory specified in --with-krb5]) else if test "x$want_krb5" = "xyes" then # # The user tried to force us to use the library, but we # couldn't find the header file; report an error. # AC_MSG_ERROR(Header file krb5.h not found.) else # # We couldn't find the header file; don't use the # library, as it's probably not present. # want_krb5=no AC_MSG_RESULT(No Heimdal or MIT header found - disabling dissection for some kerberos data in packet decoding) fi fi ]) if test "x$want_krb5" != "xno" then # # Well, we at least have the krb5 header file. # Check whether this is Heimdal or MIT. # AC_MSG_CHECKING(whether the Kerberos library is Heimdal or MIT) if test "x$ac_krb5_version" = "xHEIMDAL" -o "x$ac_krb5_version" = "xMIT" then # # Yes. # Check whether we have krb5_kt_resolve - and whether # we need to link with -lresolv when linking with # the Kerberos library. # AC_MSG_RESULT($ac_krb5_version) ethereal_save_LIBS="$LIBS" found_krb5_kt_resolve=no for extras in "" "-lresolv" do LIBS="$KRB5_LIBS $extras" if test -z "$extras" then AC_MSG_CHECKING([whether $ac_krb5_version includes krb5_kt_resolve]) else AC_MSG_CHECKING([whether $ac_krb5_version includes krb5_kt_resolve (linking with $extras)]) fi AC_TRY_LINK( [ ], [ krb5_kt_resolve(); ], [ # # We found "krb5_kt_resolve()", and required # the libraries in extras as well. # AC_MSG_RESULT(yes) KRB5_LIBS="$LIBS" AC_DEFINE(HAVE_KERBEROS, 1, [Define to use kerberos]) if test "x$ac_krb5_version" = "xHEIMDAL" then AC_DEFINE(HAVE_HEIMDAL_KERBEROS, 1, [Define to use heimdal kerberos]) elif test "x$ac_krb5_version" = "xMIT" then AC_DEFINE(HAVE_MIT_KERBEROS, 1, [Define to use MIT kerberos]) fi found_krb5_kt_resolve=yes break ], [ AC_MSG_RESULT(no) ]) done if test "$found_krb5_kt_resolve" = no then # # We didn't find "krb5_kt_resolve()" in the # Kerberos library, even when we tried linking # with -lresolv; we can't link with kerberos. # if test "x$want_krb5" = "xyes" then # # The user tried to force us to use the library, # but we can't do so; report an error. # AC_MSG_ERROR(Usable $ac_krb5_version not found) else # # Restore the versions of CFLAGS and CPPFLAGS # from before we added the flags for Kerberos. # AC_MSG_RESULT(Usable $ac_krb5_version not found - disabling dissection for some kerberos data in packet decoding) CFLAGS="$ethereal_save_CFLAGS" CPPFLAGS="$ethereal_save_CPPFLAGS" KRB5_LIBS="" want_krb5=no fi else # # We can link with Kerberos; see whether krb5.h # defines KEYTYPE_ARCFOUR_56 (where "defines" means # "as a #define or as an enum member). # AC_MSG_CHECKING([whether krb5.h defines KEYTYPE_ARCFOUR_56]) AC_COMPILE_IFELSE( [ AC_LANG_SOURCE( [[ #include #include main() { printf("%u\n", KEYTYPE_ARCFOUR_56); } ]]) ], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_KEYTYPE_ARCFOUR_56, 1, [Define if krb5.h defines KEYTYPE_ARCFOUR_56]) ], [ AC_MSG_RESULT(no) ]) fi LIBS="$ethereal_save_LIBS" else # # It's not Heimdal or MIT. # AC_MSG_RESULT(no) if test "x$want_krb5" = "xyes" then # # The user tried to force us to use the library, # but we can't do so; report an error. # AC_MSG_ERROR(Kerberos not found) else # # Restore the versions of CFLAGS and CPPFLAGS # from before we added the flags for Kerberos. # AC_MSG_RESULT(Kerberos not found - disabling dissection for some kerberos data in packet decoding) CFLAGS="$ethereal_save_CFLAGS" CPPFLAGS="$ethereal_save_CPPFLAGS" KRB5_LIBS="" want_krb5=no fi fi else # # The user asked us not to use Kerberos, or they didn't # say whether they wanted us to use it but we found # that we couldn't. # # Restore the versions of CFLAGS and CPPFLAGS # from before we added the flags for Kerberos. # CFLAGS="$ethereal_save_CFLAGS" CPPFLAGS="$ethereal_save_CPPFLAGS" KRB5_LIBS="" want_krb5=no fi AC_SUBST(KRB5_LIBS) ])