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495 lines
12 KiB
Plaintext
495 lines
12 KiB
Plaintext
dnl @(#) $Header: acsite.m4,v 1.38 96/09/26 21:18:41 leres Exp $ (LBL)
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dnl
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dnl Copyright (c) 1995, 1996
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dnl The Regents of the University of California. All rights reserved.
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dnl
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dnl Redistribution and use in source and binary forms, with or without
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dnl modification, are permitted provided that: (1) source code distributions
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dnl retain the above copyright notice and this paragraph in its entirety, (2)
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dnl distributions including binary code include the above copyright notice and
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dnl this paragraph in its entirety in the documentation or other materials
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dnl provided with the distribution, and (3) all advertising materials mentioning
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dnl features or use of this software display the following acknowledgement:
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dnl ``This product includes software developed by the University of California,
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dnl Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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dnl the University nor the names of its contributors may be used to endorse
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dnl or promote products derived from this software without specific prior
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dnl written permission.
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dnl THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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dnl WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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dnl MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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dnl
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dnl LBL autoconf macros
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dnl
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dnl
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dnl Determine which compiler we're using (cc or gcc)
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dnl If using gcc, determine the version number
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dnl If using cc, require that it support ansi prototypes
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dnl If using gcc, use -O2 (otherwise use -O)
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dnl If using cc, explicitly specify /usr/local/include
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dnl
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dnl usage:
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dnl
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dnl AC_LBL_C_INIT(copt, incls)
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dnl
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dnl results:
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dnl
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dnl $1 (copt set)
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dnl $2 (incls set)
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dnl CC
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dnl ac_cv_gcc_vers
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dnl
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AC_DEFUN(AC_LBL_C_INIT,
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[$1=-O
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$2=""
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if test -z "$CC" ; then
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case "$target_os" in
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bsdi*)
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AC_CHECK_PROG(SHLICC2, shlicc2, yes, no)
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if test $SHLICC2 = yes ; then
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CC=shlicc2
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export CC
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fi
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;;
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esac
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fi
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AC_PROG_CC
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if test $ac_cv_prog_gcc = yes ; then
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if test "$SHLICC2" = yes ; then
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ac_cv_gcc_vers=2
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$1=-O2
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else
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AC_MSG_CHECKING(gcc version)
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AC_CACHE_VAL(ac_cv_gcc_vers,
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ac_cv_gcc_vers=`$CC -v 2>&1 | \
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sed -n -e '$s/.* //' -e '$s/\..*//p'`)
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AC_MSG_RESULT($ac_cv_gcc_vers)
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if test $ac_cv_gcc_vers -gt 1 ; then
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$1=-O2
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fi
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fi
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else
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AC_MSG_CHECKING(that $CC handles ansi prototypes)
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AC_CACHE_VAL(ac_cv_cc_ansi_prototypes,
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AC_TRY_COMPILE(
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[#include <sys/types.h>],
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[int frob(int, char *)],
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ac_cv_cc_ansi_prototypes=yes,
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ac_cv_cc_ansi_prototypes=no))
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AC_MSG_RESULT($ac_cv_cc_ansi_prototypes)
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if test $ac_cv_cc_ansi_prototypes = no ; then
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case "$target_os" in
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hpux*)
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AC_MSG_CHECKING(for HP-UX ansi compiler ($CC -Aa -D_HPUX_SOURCE))
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savedcflags="$CFLAGS"
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CFLAGS="-Aa -D_HPUX_SOURCE $CFLAGS"
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AC_CACHE_VAL(ac_cv_cc_hpux_cc_aa,
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AC_TRY_COMPILE(
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[#include <sys/types.h>],
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[int frob(int, char *)],
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ac_cv_cc_hpux_cc_aa=yes,
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ac_cv_cc_hpux_cc_aa=no))
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AC_MSG_RESULT($ac_cv_cc_hpux_cc_aa)
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if test $ac_cv_cc_hpux_cc_aa = no ; then
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AC_MSG_ERROR(see the INSTALL for more info)
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fi
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CFLAGS="$savedcflags"
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V_CCOPT="-Aa $V_CCOPT"
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AC_DEFINE(_HPUX_SOURCE)
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;;
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*)
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AC_MSG_ERROR(see the INSTALL for more info)
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;;
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esac
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fi
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$2=-I/usr/local/include
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case "$target_os" in
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irix*)
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V_CCOPT="$V_CCOPT -xansi -signed -g3"
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;;
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osf*)
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V_CCOPT="$V_CCOPT -g3"
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;;
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ultrix*)
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AC_MSG_CHECKING(that Ultrix $CC hacks const in prototypes)
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AC_CACHE_VAL(ac_cv_cc_const_proto,
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AC_TRY_COMPILE(
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[#include <sys/types.h>],
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[struct a { int b; };
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void c(const struct a *)],
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ac_cv_cc_const_proto=yes,
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ac_cv_cc_const_proto=no))
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AC_MSG_RESULT($ac_cv_cc_const_proto)
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if test $ac_cv_cc_const_proto = no ; then
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AC_DEFINE(const,)
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fi
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;;
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esac
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fi
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])
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dnl
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dnl Use pfopen.c if available and pfopen() not in standard libraries
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dnl Require libpcap
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dnl Look for libpcap in ..
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dnl Use the installed libpcap if there is no local version
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dnl
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dnl usage:
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dnl
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dnl AC_LBL_LIBPCAP(pcapdep, incls)
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dnl
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dnl results:
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dnl
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dnl $1 (pcapdep set)
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dnl $2 (incls appended)
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dnl LIBS
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dnl
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AC_DEFUN(AC_LBL_LIBPCAP,
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[pfopen=/usr/examples/packetfilter/pfopen.c
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if test -f $pfopen ; then
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AC_CHECK_FUNCS(pfopen)
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if test $ac_cv_func_pfopen = "no" ; then
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AC_MSG_RESULT(Using $pfopen)
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LIBS="$LIBS $pfopen"
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fi
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fi
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AC_MSG_CHECKING(for local pcap library)
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libpcap=FAIL
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lastdir=FAIL
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places=`ls .. | sed -e 's,/$,,' -e 's,^,../,' | \
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egrep '/libpcap-[[0-9]]*\.[[0-9]]*(\.[[0-9]]*)?([[ab]][[0-9]]*)?$'`
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for dir in $places ../libpcap libpcap ; do
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basedir=`echo $dir | sed -e 's/[[ab]][[0-9]]*$//'`
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if test $lastdir = $basedir ; then
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dnl skip alphas when an actual release is present
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continue;
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fi
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lastdir=$dir
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if test -r $dir/pcap.c ; then
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libpcap=$dir/libpcap.a
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d=$dir
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dnl continue and select the last one that exists
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fi
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done
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if test $libpcap = FAIL ; then
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AC_MSG_RESULT(not found)
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AC_CHECK_LIB(pcap, main, libpcap="-lpcap")
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if test $libpcap = FAIL ; then
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AC_MSG_ERROR(see the INSTALL doc for more info)
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fi
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else
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$1=$libpcap
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$2="-I$d $$2"
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AC_MSG_RESULT($libpcap)
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fi
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LIBS="$libpcap $LIBS"])
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dnl
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dnl Define RETSIGTYPE and RETSIGVAL
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dnl
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dnl usage:
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dnl
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dnl AC_LBL_TYPE_SIGNAL
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dnl
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dnl results:
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dnl
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dnl RETSIGTYPE (defined)
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dnl RETSIGVAL (defined)
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dnl
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AC_DEFUN(AC_LBL_TYPE_SIGNAL,
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[AC_TYPE_SIGNAL
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if test "$ac_cv_type_signal" = void ; then
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AC_DEFINE(RETSIGVAL,)
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else
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AC_DEFINE(RETSIGVAL,(0))
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fi
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case "$target_os" in
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irix*)
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AC_DEFINE(_BSD_SIGNALS)
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;;
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*)
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AC_CHECK_FUNCS(sigset)
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if test $ac_cv_func_sigset = yes ; then
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AC_DEFINE(signal, sigset)
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fi
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;;
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esac])
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dnl
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dnl If using gcc, see if fixincludes should be run
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dnl
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dnl usage:
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dnl
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dnl AC_LBL_FIXINCLUDES
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dnl
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AC_DEFUN(AC_LBL_FIXINCLUDES,
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[if test $ac_cv_prog_gcc = yes ; then
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AC_MSG_CHECKING(if fixincludes is needed)
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AC_CACHE_VAL(ac_cv_gcc_fixincludes,
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AC_TRY_COMPILE(
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[/*
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* This generates a "duplicate case value" when fixincludes
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* has not be run.
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*/
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# include <sys/types.h>
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# include <sys/time.h>
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# include <sys/ioctl.h>
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# ifdef HAVE_SYS_IOCCOM_H
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# include <sys/ioccom.h>
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# endif],
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[switch (0) {
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case _IO('A', 1):;
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case _IO('B', 1):;
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}],
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ac_cv_gcc_fixincludes=yes,
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ac_cv_gcc_fixincludes=no))
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AC_MSG_RESULT($ac_cv_gcc_fixincludes)
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if test $ac_cv_gcc_fixincludes = no ; then
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# Don't cache failure
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unset ac_cv_gcc_fixincludes
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AC_MSG_ERROR(see the INSTALL for more info)
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fi
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fi])
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dnl
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dnl Check for flex, default to lex
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dnl Require flex 2.4 or higher
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dnl Check for bison, default to yacc
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dnl Default to lex/yacc if both flex and bison are not available
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dnl Define the yy prefix string if using flex and bison
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dnl
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dnl usage:
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dnl
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dnl AC_LBL_LEX_AND_YACC(lex, yacc, yyprefix)
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dnl
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dnl results:
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dnl
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dnl $1 (lex set)
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dnl $2 (yacc appended)
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dnl $3 (optional flex and bison -P prefix)
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dnl
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AC_DEFUN(AC_LBL_LEX_AND_YACC,
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[AC_CHECK_PROGS($1, flex, lex)
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if test "$$1" = flex ; then
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# The -V flag was added in 2.4
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AC_MSG_CHECKING(for flex 2.4 or higher)
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AC_CACHE_VAL(ac_cv_flex_v24,
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if flex -V >/dev/null 2>&1; then
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ac_cv_flex_v24=yes
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else
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ac_cv_flex_v24=no
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fi)
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AC_MSG_RESULT($ac_cv_flex_v24)
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if test $ac_cv_flex_v24 = no ; then
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s="2.4 or higher required"
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AC_MSG_WARN(ignoring obsolete flex executable ($s))
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$1=lex
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fi
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fi
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AC_CHECK_PROGS($2, bison, yacc)
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if test "$$2" = bison ; then
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$2="$$2 -y"
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fi
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if test "$$1" != lex -a "$$2" = yacc -o "$$1" = lex -a "$$2" != yacc ; then
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AC_MSG_WARN(don't have both flex and bison; reverting to lex/yacc)
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$1=lex
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$2=yacc
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fi
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if test "$$1" = flex -a -n "$3" ; then
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$1="$$1 -P$3"
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$2="$$2 -p $3"
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fi])
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dnl
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dnl Checks to see if union wait is used with WEXITSTATUS()
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dnl
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dnl usage:
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dnl
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dnl AC_LBL_UNION_WAIT
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dnl
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dnl results:
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dnl
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dnl DECLWAITSTATUS (defined)
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dnl
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AC_DEFUN(AC_LBL_UNION_WAIT,
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[AC_MSG_CHECKING(if union wait is used)
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AC_CACHE_VAL(ac_cv_union_wait,
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AC_TRY_COMPILE([
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# include <sys/types.h>
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# include <sys/wait.h>],
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[int status;
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u_int i = WEXITSTATUS(status);
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u_int j = waitpid(0, &status, 0);],
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ac_cv_union_wait=no,
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ac_cv_union_wait=yes))
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AC_MSG_RESULT($ac_cv_union_wait)
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if test $ac_cv_union_wait = yes ; then
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AC_DEFINE(DECLWAITSTATUS,union wait)
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else
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AC_DEFINE(DECLWAITSTATUS,int)
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fi])
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dnl
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dnl Checks to see if the sockaddr struct has the 4.4 BSD sa_len member
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dnl
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dnl usage:
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dnl
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dnl AC_LBL_SOCKADDR_SA_LEN
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dnl
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dnl results:
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dnl
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dnl HAVE_SOCKADDR_SA_LEN (defined)
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dnl
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AC_DEFUN(AC_LBL_SOCKADDR_SA_LEN,
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[AC_MSG_CHECKING(if sockaddr struct has sa_len member)
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AC_CACHE_VAL(ac_cv_sockaddr_has_sa_len,
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AC_TRY_COMPILE([
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# include <sys/types.h>
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# include <sys/socket.h>],
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[u_int i = sizeof(((struct sockaddr *)0)->sa_len)],
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ac_cv_sockaddr_has_sa_len=yes,
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ac_cv_sockaddr_has_sa_len=no))
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AC_MSG_RESULT($ac_cv_sockaddr_has_sa_len)
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if test $ac_cv_sockaddr_has_sa_len = yes ; then
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AC_DEFINE(HAVE_SOCKADDR_SA_LEN)
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fi])
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dnl
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dnl Checks to see if -R is used
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dnl
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dnl usage:
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dnl
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dnl AC_LBL_HAVE_RUN_PATH
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dnl
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dnl results:
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dnl
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dnl ac_cv_have_run_path (yes or no)
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dnl
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AC_DEFUN(AC_LBL_HAVE_RUN_PATH,
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[AC_MSG_CHECKING(for ${CC-cc} -R)
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AC_CACHE_VAL(ac_cv_have_run_path,
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[echo 'main(){}' > conftest.c
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${CC-cc} -o conftest conftest.c -R/a1/b2/c3 >conftest.out 2>&1
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if test ! -s conftest.out ; then
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ac_cv_have_run_path=yes
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else
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ac_cv_have_run_path=no
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fi
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rm -f conftest*])
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AC_MSG_RESULT($ac_cv_have_run_path)
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])
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dnl
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dnl Checks to see if unaligned memory accesses fail
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dnl
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dnl usage:
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dnl
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dnl AC_LBL_UNALIGNED_ACCESS
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dnl
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dnl results:
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dnl
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dnl LBL_ALIGN (DEFINED)
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dnl
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AC_DEFUN(AC_LBL_UNALIGNED_ACCESS,
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[AC_MSG_CHECKING(if unaligned accesses fail)
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AC_CACHE_VAL(ac_cv_unaligned_fail,
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[case "$target_cpu" in
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alpha|hp*|mips|sparc)
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ac_cv_unaligned_fail=yes
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;;
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*)
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cat >conftest.c <<EOF
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# include <sys/types.h>
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# include <sys/wait.h>
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# include <stdio.h>
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unsigned char a[[5]] = { 1, 2, 3, 4, 5 };
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main() {
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unsigned int i;
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pid_t pid;
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int status;
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/* avoid "core dumped" message */
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pid = fork();
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if (pid < 0)
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exit(2);
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if (pid > 0) {
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/* parent */
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pid = waitpid(pid, &status, 0);
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if (pid < 0)
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exit(3);
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exit(!WIFEXITED(status));
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}
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/* child */
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i = *(unsigned int *)&a[[1]];
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printf("%d\n", i);
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exit(0);
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}
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EOF
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${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS \
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conftest.c $LIBS >/dev/null 2>&1
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if test ! -x conftest ; then
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dnl failed to compile for some reason
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ac_cv_unaligned_fail=yes
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else
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./conftest >conftest.out
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if test ! -s conftest.out ; then
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ac_cv_unaligned_fail=yes
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else
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ac_cv_unaligned_fail=no
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fi
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fi
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rm -f conftest* core core.conftest
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;;
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esac])
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AC_MSG_RESULT($ac_cv_unaligned_fail)
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if test $ac_cv_unaligned_fail = yes ; then
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AC_DEFINE(LBL_ALIGN)
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fi])
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dnl
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dnl If using gcc and the file .devel exists:
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dnl Compile with -g (if supported) and -Wall
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dnl If using gcc 2, do extra prototype checking
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dnl If an os prototype include exists, symlink os-proto.h to it
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dnl
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dnl usage:
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dnl
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dnl AC_LBL_DEVEL(copt)
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dnl
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dnl results:
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dnl
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dnl $1 (copt appended)
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dnl HAVE_OS_PROTO_H (defined)
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dnl os-proto.h (symlinked)
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dnl
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AC_DEFUN(AC_LBL_DEVEL,
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[rm -f os-proto.h
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if test $ac_cv_prog_gcc = yes -a -f .devel ; then
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if test $ac_cv_prog_gcc_g = yes ; then
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$1="-g $$1"
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fi
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$1="$$1 -Wall"
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if test $ac_cv_gcc_vers -gt 1 ; then
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$1="$$1 -Wmissing-prototypes -Wstrict-prototypes"
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fi
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os=`echo $target_os | sed -e 's/\([[0-9]][[0-9]]*\)[[^0-9]].*$/\1/'`
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name="lbl/os-$os.h"
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if test -f $name ; then
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ln -s $name os-proto.h
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AC_DEFINE(HAVE_OS_PROTO_H)
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else
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AC_MSG_WARN(can't find $name)
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fi
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fi])
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