forked from osmocom/wireshark
9c83306a7e
svn path=/trunk/; revision=10507
237 lines
6.9 KiB
Text
237 lines
6.9 KiB
Text
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: acinclude.m4,v 1.19 2004/03/27 12:07:57 jmayer Exp $
|
|
dnl
|
|
|
|
#
|
|
# AC_WIRETAP_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_WIRETAP_ADD_DASH_L],
|
|
[$1="$$1 -L$2"
|
|
case "$host_os" in
|
|
solaris*)
|
|
$1="$$1 -R$2"
|
|
;;
|
|
esac
|
|
])
|
|
|
|
#
|
|
# AC_WIRETAP_PCAP_CHECK
|
|
#
|
|
AC_DEFUN([AC_WIRETAP_PCAP_CHECK],
|
|
[
|
|
if test -z "$pcap_dir"
|
|
then
|
|
#
|
|
# 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 "$prefix/include".
|
|
#
|
|
# XXX - should we just add "$prefix/include" to the include
|
|
# search path?
|
|
#
|
|
AC_MSG_CHECKING(for extraneous pcap header directories)
|
|
found_pcap_dir=""
|
|
for pcap_dir in /usr/include/pcap $prefix/include /usr/local/include/pcap
|
|
do
|
|
if test -d $pcap_dir ; then
|
|
if test x$pcap_dir != x/usr/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.
|
|
#
|
|
# XXX - if there's also a libpcap in a directory that's
|
|
# already in CFLAGS or CPPFLAGS, this won't make us find
|
|
# the version in the specified directory, as the compiler
|
|
# will search that other directory before it searches the
|
|
# specified directory.
|
|
#
|
|
CFLAGS="$CFLAGS -I$pcap_dir/include"
|
|
CPPFLAGS="$CPPFLAGS -I$pcap_dir/include"
|
|
fi
|
|
|
|
# Pcap header check
|
|
AC_CHECK_HEADERS(pcap.h)
|
|
])
|
|
|
|
#
|
|
# AC_WIRETAP_ZLIB_CHECK
|
|
#
|
|
AC_DEFUN([AC_WIRETAP_ZLIB_CHECK],
|
|
[
|
|
if test "x$zlib_dir" != "x"
|
|
then
|
|
#
|
|
# The user specified a directory in which zlib resides,
|
|
# so add the "include" subdirectory of that directory to
|
|
# the include file search path and the "lib" subdirectory
|
|
# of that directory to the library search path.
|
|
#
|
|
# XXX - if there's also a zlib in a directory that's
|
|
# already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
|
|
# make us find the version in the specified directory,
|
|
# as the compiler and/or linker will search that other
|
|
# directory before it searches the specified directory.
|
|
#
|
|
wiretap_save_CFLAGS="$CFLAGS"
|
|
CFLAGS="$CFLAGS -I$zlib_dir/include"
|
|
wiretap_save_CPPFLAGS="$CPPFLAGS"
|
|
CPPFLAGS="$CPPFLAGS -I$zlib_dir/include"
|
|
wiretap_save_LIBS="$LIBS"
|
|
AC_WIRETAP_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_WIRETAP_ADD_DASH_L(LIBS, $zlib_dir/lib)
|
|
LIBS="$LIBS -lz $wiretap_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="$wiretap_save_CFLAGS"
|
|
CPPFLAGS="$wiretap_save_CPPFLAGS"
|
|
LIBS="$wiretap_save_LIBS"
|
|
fi
|
|
want_zlib=no
|
|
])
|
|
fi
|
|
|
|
if test "x$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
|
|
])
|