--- /dev/null
+dnl
+dnl configure.ac:
+dnl Autoconf input for iftop.
+dnl
+dnl I hate autoconf with a passion. It's an utter pain to write these bloody
+dnl things and even once you have you find yourself testing for more and more
+dnl special cases. But that's OK. Paul is going to maintain it :)
+dnl -- Chris Lightfoot
+dnl
+dnl $Id: configure.ac,v 1.2 2014/01/19 20:28:31 pdw Exp $
+dnl
+dnl To regenerate everything from source, do:
+dnl autoheader
+dnl aclocal
+dnl automake
+dnl autoconf
+dnl Now you should have good sources to make into a tarball and distribute.
+dnl ./configure (perhaps with some arguments)
+dnl make
+dnl Tested with automake 1.9.6-1.14 and autoconf 2.59-2.69.
+dnl
+dnl Boilerplate configuration
+dnl
+
+AC_INIT([iftop], [1.0pre4], [pdw@ex-parrot.com], [iftop], [http://www.ex-parrot.com/pdw/iftop/])
+
+AC_CONFIG_AUX_DIR(config)
+
+AC_CANONICAL_SYSTEM
+
+AC_CONFIG_HEADERS([config.h])
+AM_INIT_AUTOMAKE
+
+dnl Make sure we have a C compiler....
+AC_PROG_CC
+AC_HEADER_STDC
+
+dnl
+dnl Options to configure.
+dnl
+
+AC_ARG_WITH(resolver,
+ [ --with-resolver=TYPE Technique iftop should use for name resolution.
+ Valid options are:
+ netdb use gethostbyaddr_r in multiple
+ threads.
+ netdb_1thread use gethostbyaddr_r and
+ assume it is not reentrant.
+ ares use the MIT ARES asynchronous
+ resolver library.
+ forking use the REALLY SUCKY forking resolver.
+ guess run experiments to guess a
+ reasonable value. Only works if you
+ aren't cross-compiling. This
+ is the default. guess will
+ either select netdb or netdb_1thread.
+ none don't do name resolution.],
+ [resolver=$withval],
+ [resolver=guess])
+
+AC_ARG_WITH(libpcap,
+ [ --with-libpcap=WHERE Where the libpcap packet-capture library is found.
+ The pcap library should be installed in WHERE/lib,
+ and the header file in either WHERE/include or
+ WHERE/include/pcap.
+ [default=look in standard locations]],
+ [libpcap_prefix=$withval],
+ [libpcap_prefix=""])
+
+dnl
+dnl Fairly generic checks.
+dnl
+
+dnl Checks for system headers.
+AC_CHECK_HEADERS([sgtty.h sys/ioctl.h sys/time.h sys/sockio.h termio.h termios.h unistd.h])
+
+dnl Checks for typedefs, structures, and compiler characteristics.
+AC_C_CONST
+AC_TYPE_SIZE_T
+AC_HEADER_TIME
+
+dnl
+dnl Are we on a system that uses the STREAMS low-level DLPI interface?
+dnl
+
+AC_CHECK_HEADER([sys/dlpi.h],[AC_DEFINE([HAVE_DLPI],1,[Are we running on a STREAMS system with DLPI?])])
+
+dnl Checks for library functions.
+AC_CHECK_FUNCS(regcomp select strdup strerror strspn)
+
+AC_SEARCH_LIBS(socket, socket)
+AC_SEARCH_LIBS(log, m)
+AC_CHECK_FUNC(gethostbyname, ,
+ [AC_CHECK_LIB(nsl, gethostbyname)] )
+
+AC_SEARCH_LIBS(inet_aton, [socket nsl])
+AC_SEARCH_LIBS(inet_pton, [socket nsl])
+AC_CHECK_FUNCS(inet_aton inet_pton)
+
+dnl
+dnl Find integers of known physical size. This is a pain in the arse because
+dnl we can't use AC_CHECK_SIZEOF to find the original variables, since that
+dnl function doesn't permit us to include a header file. Sigh.
+dnl
+
+for type in u_int8_t u_int16_t u_int32_t ; do
+ AC_MSG_CHECKING([size of $type])
+ AC_RUN_IFELSE([AC_LANG_SOURCE([
+#include <sys/types.h>
+#include <stdio.h>
+int main() {
+ $type dummy;
+ FILE *f=fopen("conftestval", "w");
+ if (!f) exit(1);
+ fprintf(f, "%d\n", sizeof($1));
+ exit(0);
+}
+ ])], [
+ x=`cat conftestval`
+ eval "size_$type=$x"
+ AC_MSG_RESULT([$x])
+ ], [
+ eval "size_$type=0"
+ AC_MSG_RESULT([unknown type])
+ ], [
+ eval "size_$type=0"
+ AC_MSG_RESULT([can't determine when cross-compiling])
+ ])
+done
+
+dnl Groan. Have to do things this way so that autoheader can do its thing....
+AC_DEFINE_UNQUOTED(SIZEOF_U_INT8_T, [$size_u_int8_t], [size of u_int8_t])
+AC_DEFINE_UNQUOTED(SIZEOF_U_INT16_T, [$size_u_int16_t], [size of u_int16_t])
+AC_DEFINE_UNQUOTED(SIZEOF_U_INT32_T, [$size_u_int32_t], [size of u_int32_t])
+
+dnl If we already have these types, don't piss about any more....
+
+if test $size_u_int8_t != 1 || test $size_u_int16_t != 2 || test $size_u_int32_t != 4 ; then
+dnl XXXif test $size_u_int8_t != 1 -o $size_u_int16_t != 2 -o $size_u_int32_t != 4 ; then
+ do_int_types=1
+ AC_CHECK_HEADERS(
+ stdint.h dnl C99
+ sys/inttypes.h, dnl Solaris
+ [do_int_types=0; break])
+
+ if test $do_int_types = 1 ; then
+ dnl No C99 int types, so figure them out from basic types.
+ AC_CHECK_SIZEOF(unsigned short int)
+ AC_CHECK_SIZEOF(unsigned int)
+ AC_CHECK_SIZEOF(unsigned long int)
+ else
+ dnl Just use the C99 ones.
+ AC_DEFINE(HAVE_C99_INTS, 1, [C99 fixed-width int types available])
+ fi
+fi
+
+dnl
+dnl Name resolution.
+dnl
+dnl This is complicated because we need some sort of reentrant mechanism for
+dnl name resolution. Naturally, UNIX vendors have come up with a variety of
+dnl incompatible schemes for this, many of which don't work at all.
+dnl
+
+dnl First, the default resolver, which uses getnameinfo or gethostbyaddr_r. If
+dnl not available, we fall back to gethostbyaddr. We could fall back to ARES,
+dnl but that's probably not available on typical machines.
+
+dnl If we've been asked to guess, remember that fact in specified_resolver.
+dnl From this point on, resolver is our preferred resolver given the
+dnl experiments we've done so far, or "guess" if we have no idea.
+specified_resolver=$resolver
+if test x$specified_resolver = xguess ; then
+ dnl Best possibility is getnameinfo.
+ use_getnameinfo=0
+ AC_SEARCH_LIBS(getnameinfo, [nsl], [use_getnameinfo=1])
+
+ dnl XXX For the moment, don't use getnameinfo, since it isn't actually
+ dnl thread safe on, e.g., NetBSD.
+ use_getnameinfo=0
+
+ if test $use_getnameinfo = 1 ; then
+ dnl Done.
+ AC_DEFINE(USE_GETNAMEINFO, 1, [use getnameinfo for name resolution])
+ else
+ dnl Best hope is netdb, which presently means gethostbyaddr_r.
+ resolver=netdb
+ fi
+fi
+
+if test x$resolver = xnetdb ; then
+ dnl Can use gethostbyaddr_r?
+ AC_SEARCH_LIBS(gethostbyaddr_r, [nsl], , [resolver=guess])
+ if test x$resolver = xguess && test x$specified_resolver != xguess ; then
+ dnl They wanted gethostbyaddr_r, but they can't have it, so stop.
+ AC_MSG_ERROR([no library defines gethostbyaddr_r])
+ fi
+fi
+
+dnl We still might do gethostbyaddr_r. Figure out whether we have
+dnl glibc-style or Solaris-style gethostbyaddr_r (or neither...).
+dnl Separate determining how to call gethostbyaddr_r from testing
+dnl whether it works so we can support cross-compilation.
+if test x$resolver = xnetdb ; then
+ AC_MSG_CHECKING([how to call gethostbyaddr_r])
+ dnl Try 7 arguments returning a struct hostent*.
+ AC_LINK_IFELSE([AC_LANG_SOURCE([`cat config/hostentp_ghba_r.c`])],
+ [AC_MSG_RESULT([7 args])
+ ghba_args=8
+ AC_DEFINE(GETHOSTBYADDR_R_RETURNS_HOSTENT_P, 1,
+ [7-argument gethostbyaddr_r returns struct hostent*])], [
+ dnl Try 8 arguments returning an int.
+ AC_LINK_IFELSE([AC_LANG_SOURCE([`cat config/int_ghba_r.c`])],
+ [AC_MSG_RESULT([8 args, int return])
+ ghba_args=8
+ AC_DEFINE(GETHOSTBYADDR_R_RETURNS_INT, 1,
+ [8-argument gethostbyaddr_r returns int])], [
+ dnl Neither.
+ AC_MSG_RESULT([don't know how])
+ resolver=guess])])
+ if test x$resolver = xguess && test x$specified_resolver != xguess ; then
+ dnl They wanted gethostbyaddr_r, but they can't have it, so stop.
+ AC_MSG_ERROR([gethostbyaddr_r has no known calling convention])
+ fi
+fi
+
+dnl If we still want to do gethostbyaddr_r, and we aren't
+dnl cross-compiling, test it.
+if test x$resolver = xnetdb ; then
+ if test x$ghba_args = x8 ; then
+ testfile=int_ghba_r
+ else
+ testfile=hostentp_ghba_r
+ fi
+ AC_MSG_CHECKING(gethostbyaddr_r usability)
+ AC_RUN_IFELSE([AC_LANG_SOURCE([`cat config/$testfile.c`])],
+ [AC_MSG_RESULT([yes])],
+ [AC_MSG_RESULT([no])
+ resolver=guess],
+ [AC_MSG_RESULT([can't test because we are cross-compiling])])
+ if test x$resolver = xguess ; then
+ if test x$specified_resolver = xguess ; then
+ AC_MSG_RESULT([gethostbyaddr_r doesn't work, so we'll try something else])
+ else
+ dnl They wanted gethostbyaddr_r, but it doesn't work, so stop.
+ AC_MSG_ERROR([gethostbyaddr_r doesn't work])
+ fi
+ fi
+fi
+
+dnl We found a gethostbyaddr_r we know how to use and which seems to
+dnl work.
+if test x$resolver = xnetdb ; then
+ AC_DEFINE(USE_GETHOSTBYADDR_R, 1, [use gethostbyaddr_r for name resolution])
+fi
+
+dnl They may have asked for ares.
+if test x$resolver = xares ; then
+ dnl See if ares is to hand....
+ AC_SEARCH_LIBS(ares_init, [ares], [
+ AC_DEFINE(USE_ARES, 1, [use ARES for name resolution])
+ ], [
+ dnl They asked for ares, but we can't give it to them, so stop.
+ AC_MSG_ERROR([can't find ARES. Re-run configure and ask for a different resolver.])])
+fi
+
+dnl Last thing to try if we haven't decided yet is netdb_1thread.
+if test x$resolver = xguess ; then
+ resolver=netdb_1thread
+fi
+
+dnl Ugh. Both the single-threaded and the forking resolvers use gethostbyaddr.
+if test x$resolver = xnetdb_1thread || test x$resolver = xforking ; then
+ AC_SEARCH_LIBS(gethostbyaddr, [nsl], , [
+ AC_MSG_ERROR([gethostbyaddr is not available. You will have to
+ recompile with no name resolution at all.])])
+
+ if test x$resolver = xnetdb_1thread ; then
+ AC_MSG_WARN([using single-threaded resolver with gethostbyaddr
+ Consider obtaining ARES or a machine with a working gethostbyaddr_r.])
+ AC_DEFINE(USE_GETHOSTBYADDR, 1, [use gethostbyaddr for name resolution])
+ else
+ AC_DEFINE(USE_FORKING_RESOLVER, 1, [use a REALLY SUCKY forking resolver for name resolution])
+ fi
+fi
+
+dnl Otherwise, no resolver at all. Boo hoo.
+
+dnl
+dnl Find libpcap.
+dnl
+
+if test x$libpcap_prefix = x ; then
+ libpcap_prefix="/usr /usr/local /opt /software"
+fi
+
+AC_MSG_CHECKING([where to find pcap.h])
+foundpcaph=0
+oldCPPFLAGS=$CPPFLAGS
+for test_prefix in "" $libpcap_prefix ; do
+ for x in "" /pcap ; do
+ if test x$test_prefix != x ; then
+ CPPFLAGS="$oldCPPFLAGS -I$test_prefix/include$x"
+ fi
+ AC_TRY_CPP([
+#include <pcap.h>
+ ], [
+ AC_MSG_RESULT([$test_prefix/include$x])
+ foundpcaph=1
+ break
+ ])
+ done
+ if test $foundpcaph = 1 ; then
+ break
+ fi
+done
+
+if test $foundpcaph = 0 ; then
+ AC_MSG_RESULT([no idea])
+ AC_MSG_ERROR([can't find pcap.h
+ You're not going to get very far without libpcap.])
+else
+ dnl assume that -lpcap is under $test_prefix/lib
+ if test x$test_prefix != x ; then
+ LDFLAGS="$LDFLAGS -L$test_prefix/lib"
+ fi
+ AC_CHECK_LIB(pcap, pcap_open_live, , [
+ AC_MSG_ERROR([can't find libpcap
+ You're not going to get very far without libpcap.])
+ ])
+fi
+
+foundpcap=0
+AC_CHECK_HEADERS([pcap.h pcap/pcap.h], [
+ foundpcap=1
+ break
+ ])
+
+if test $foundpcap = 0 ; then
+ AC_MSG_ERROR([can't find pcap.h
+ You're not going to get very far without libpcap.])
+fi
+
+dnl
+dnl Curses. Really, we need ncurses or something similarly advanced, since
+dnl we use the (apparently obscure) mvchgat function. Unfortunately, there's
+dnl a solid chance that mvchgat is a macro, so we can't just use
+dnl AC_SEARCH_LIBS....
+dnl
+
+AC_MSG_CHECKING([for a curses library containing mvchgat])
+oldLIBS=$LIBS
+for curseslib in ncursesw curses ncurses ; do
+ LIBS="$oldLIBS -l$curseslib"
+ AC_TRY_LINK([
+#include <$curseslib.h>
+ ], [
+ mvchgat(0, 0, 1, A_REVERSE, 0, NULL)
+ ], [
+ foundcurseslib=$curseslib
+ break
+ ])
+done
+
+if test x$foundcurseslib = x ; then
+ AC_MSG_RESULT([none found])
+ AC_MSG_ERROR([Curses! Foiled again!
+ (Can't find a curses library supporting mvchgat.)
+ Consider installing ncurses.])
+else
+ AC_MSG_RESULT([-l$foundcurseslib])
+fi
+
+
+dnl
+dnl POSIX threads. Different systems like different combinations of flags,
+dnl libraries, etc. We use a test program to figure this stuff out.
+dnl
+
+AC_MSG_CHECKING([POSIX threads compilation])
+thrfail=1
+oldCFLAGS=$CFLAGS
+oldLIBS=$LIBS
+for flag in "" -mt -pthread -thread ; do
+ CFLAGS="$oldCFLAGS $flag"
+ for lib in "" -lpthread "-lpthread -lposix4" ; do
+ LIBS="$oldLIBS $lib"
+ AC_LINK_IFELSE([AC_LANG_SOURCE([`cat config/pthread.c`])], [
+ foundthrlib=$lib
+ foundthrflag=$flag
+ thrfail=0
+ break
+ ])
+ done
+ if test $thrfail = 0 ; then
+ break
+ fi
+done
+
+if test $thrfail = 1 ; then
+ AC_MSG_RESULT([no idea])
+ AC_MSG_ERROR([can't figure out how to compile with POSIX threads
+ If your system actually supports POSIX threads, this means we've messed up.])
+fi
+
+AC_MSG_RESULT([CFLAGS=$foundthrflag and LIBS=$foundthrlib])
+AC_MSG_CHECKING([POSIX threads usability])
+AC_RUN_IFELSE([AC_LANG_SOURCE([`cat config/pthread.c`])],
+ [AC_MSG_RESULT([yes])],
+ [AC_MSG_ERROR(
+ [it fails. We probably guessed the wrong CFLAGS.])],
+ [AC_MSG_RESULT([can't test because we are cross-compiling])])
+
+dnl
+dnl Are we on a system (like Solaris) that requires promiscuous mode in order to
+dnl see any outgoing packets?
+dnl
+
+AC_MSG_CHECKING([if we need to enable promiscuous mode by default])
+
+enable_default_promiscuous="no"
+
+case "$host_os" in
+solaris*) enable_default_promiscuous="yes" ;;
+esac
+
+AC_ARG_ENABLE(default-promiscuous,
+ [ --enable-default-promiscuous If enabled, iftop will operate in promiscuous mode
+ to capture outgoing packets])
+
+AC_MSG_RESULT([$enable_default_promiscuous])
+
+if test x"$enable_default_promiscuous" = x"yes"; then
+ AC_DEFINE([NEED_PROMISCUOUS_FOR_OUTGOING],1,[Enable default promiscuous mode to capture outgoing packets])
+fi
+
+dnl
+dnl Wahey! This might even work.
+dnl
+
+AC_SUBST(ac_aux_dir)
+
+AC_OUTPUT(Makefile config/Makefile)
+
+if echo $PACKAGE_VERSION | grep 'pre' > /dev/null ; then
+ AC_MSG_WARN([
+******************************************************************************
+
+This is a pre-release version. Pre-releases are subject to limited
+announcements, and therefore limited circulation, as a means of testing
+the more widely circulated final releases.
+
+Please do not be surprised if this release is broken, and if it is broken, do
+not assume that someone else has spotted it. Instead, please drop a note on
+the mailing list, or a brief email to me on pdw@ex-parrot.com
+
+Thank you for taking the time to be the testing phase of this development
+process.
+
+Paul Warren
+
+******************************************************************************
+])
+fi
projects / iftop.git / blobdiff