1257 lines
32 KiB
Plaintext
1257 lines
32 KiB
Plaintext
dnl @(#) Header: /tcpdump/master/tcpdump/aclocal.m4,v 1.106.2.7 2005/11/08 03:00:52 guy Exp (LBL)
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dnl
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dnl Copyright (c) 1995, 1996, 1997, 1998
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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 LDFLAGS
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dnl ac_cv_lbl_gcc_vers
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dnl LBL_CFLAGS
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dnl
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AC_DEFUN(AC_LBL_C_INIT,
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[AC_PREREQ(2.12)
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AC_BEFORE([$0], [AC_PROG_CC])
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AC_BEFORE([$0], [AC_LBL_FIXINCLUDES])
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AC_BEFORE([$0], [AC_LBL_DEVEL])
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AC_ARG_WITH(gcc, [ --without-gcc don't use gcc])
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$1="-O"
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$2=""
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if test "${srcdir}" != "." ; then
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$2="-I\$(srcdir)"
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fi
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if test "${CFLAGS+set}" = set; then
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LBL_CFLAGS="$CFLAGS"
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fi
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if test -z "$CC" ; then
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case "$host_os" in
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bsdi*)
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AC_CHECK_PROG(SHLICC2, shlicc2, yes, no)
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if test $SHLICC2 = yes ; then
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CC=shlicc2
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export CC
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fi
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;;
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esac
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fi
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if test -z "$CC" -a "$with_gcc" = no ; then
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CC=cc
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export CC
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fi
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AC_PROG_CC
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if test "$GCC" = yes ; then
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if test "$SHLICC2" = yes ; then
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ac_cv_lbl_gcc_vers=2
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$1="-O2"
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else
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AC_MSG_CHECKING(gcc version)
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AC_CACHE_VAL(ac_cv_lbl_gcc_vers,
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ac_cv_lbl_gcc_vers=`$CC -v 2>&1 | \
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sed -e '/^gcc version /!d' \
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-e 's/^gcc version //' \
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-e 's/ .*//' -e 's/^[[[^0-9]]]*//' \
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-e 's/\..*//'`)
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AC_MSG_RESULT($ac_cv_lbl_gcc_vers)
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if test $ac_cv_lbl_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 $CC handles ansi prototypes)
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AC_CACHE_VAL(ac_cv_lbl_cc_ansi_prototypes,
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AC_TRY_COMPILE(
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[#include <sys/types.h>],
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[int frob(int, char *)],
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ac_cv_lbl_cc_ansi_prototypes=yes,
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ac_cv_lbl_cc_ansi_prototypes=no))
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AC_MSG_RESULT($ac_cv_lbl_cc_ansi_prototypes)
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if test $ac_cv_lbl_cc_ansi_prototypes = no ; then
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case "$host_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 $CFLAGS"
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AC_CACHE_VAL(ac_cv_lbl_cc_hpux_cc_aa,
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AC_TRY_COMPILE(
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[#include <sys/types.h>],
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[int frob(int, char *)],
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ac_cv_lbl_cc_hpux_cc_aa=yes,
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ac_cv_lbl_cc_hpux_cc_aa=no))
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AC_MSG_RESULT($ac_cv_lbl_cc_hpux_cc_aa)
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if test $ac_cv_lbl_cc_hpux_cc_aa = no ; then
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AC_MSG_ERROR(see the INSTALL doc for more info)
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fi
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CFLAGS="$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 doc for more info)
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;;
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esac
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fi
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$2="$$2 -I/usr/local/include"
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LDFLAGS="$LDFLAGS -L/usr/local/lib"
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case "$host_os" in
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irix*)
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V_CCOPT="$V_CCOPT -xansi -signed -O"
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;;
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osf*)
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V_CCOPT="$V_CCOPT -std1 -O"
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;;
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ultrix*)
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AC_MSG_CHECKING(that Ultrix $CC hacks const in prototypes)
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AC_CACHE_VAL(ac_cv_lbl_cc_const_proto,
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AC_TRY_COMPILE(
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[#include <sys/types.h>],
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[struct a { int b; };
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void c(const struct a *)],
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ac_cv_lbl_cc_const_proto=yes,
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ac_cv_lbl_cc_const_proto=no))
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AC_MSG_RESULT($ac_cv_lbl_cc_const_proto)
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if test $ac_cv_lbl_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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#
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# Try compiling a sample of the type of code that appears in
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# gencode.c with "inline", "__inline__", and "__inline".
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#
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# Autoconf's AC_C_INLINE, at least in autoconf 2.13, isn't good enough,
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# as it just tests whether a function returning "int" can be inlined;
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# at least some versions of HP's C compiler can inline that, but can't
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# inline a function that returns a struct pointer.
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#
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AC_DEFUN(AC_LBL_C_INLINE,
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[AC_MSG_CHECKING(for inline)
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AC_CACHE_VAL(ac_cv_lbl_inline, [
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ac_cv_lbl_inline=""
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ac_lbl_cc_inline=no
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for ac_lbl_inline in inline __inline__ __inline
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do
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AC_TRY_COMPILE(
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[#define inline $ac_lbl_inline
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static inline struct iltest *foo(void);
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struct iltest {
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int iltest1;
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int iltest2;
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};
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static inline struct iltest *
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foo()
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{
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static struct iltest xxx;
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return &xxx;
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}],,ac_lbl_cc_inline=yes,)
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if test "$ac_lbl_cc_inline" = yes ; then
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break;
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fi
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done
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if test "$ac_lbl_cc_inline" = yes ; then
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ac_cv_lbl_inline=$ac_lbl_inline
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fi])
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if test ! -z "$ac_cv_lbl_inline" ; then
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AC_MSG_RESULT($ac_cv_lbl_inline)
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else
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AC_MSG_RESULT(no)
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fi
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AC_DEFINE_UNQUOTED(inline, $ac_cv_lbl_inline, [Define as token for inline if inlining supported])])
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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 $2 (incls appended)
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dnl LIBS
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dnl LBL_LIBS
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dnl
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AC_DEFUN(AC_LBL_LIBPCAP,
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[AC_REQUIRE([AC_LBL_LIBRARY_NET])
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dnl
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dnl save a copy before locating libpcap.a
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dnl
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LBL_LIBS="$LIBS"
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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 $srcdir/.. | sed -e 's,/$,,' -e "s,^,$srcdir/../," | \
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egrep '/libpcap-[[0-9]]*.[[0-9]]*(.[[0-9]]*)?([[ab]][[0-9]]*)?$'`
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for dir in $places $srcdir/../libpcap $srcdir/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 $dir/libpcap.a ; then
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libpcap=$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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dnl
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dnl Good old Red Hat Linux puts "pcap.h" in
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dnl "/usr/include/pcap"; had the LBL folks done so,
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dnl that would have been a good idea, but for
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dnl the Red Hat folks to do so just breaks source
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dnl compatibility with other systems.
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dnl
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dnl We work around this by assuming that, as we didn't
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dnl find a local libpcap, libpcap is in /usr/lib or
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dnl /usr/local/lib and that the corresponding header
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dnl file is under one of those directories; if we don't
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dnl find it in either of those directories, we check to
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dnl see if it's in a "pcap" subdirectory of them and,
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dnl if so, add that subdirectory to the "-I" list.
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dnl
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AC_MSG_CHECKING(for extraneous pcap header directories)
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if test \( ! -r /usr/local/include/pcap.h \) -a \
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\( ! -r /usr/include/pcap.h \); then
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if test -r /usr/local/include/pcap/pcap.h; then
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d="/usr/local/include/pcap"
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elif test -r /usr/include/pcap/pcap.h; then
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d="/usr/include/pcap"
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fi
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fi
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if test -z "$d" ; then
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AC_MSG_RESULT(not found)
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else
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$2="-I$d $$2"
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AC_MSG_RESULT(found -- -I$d added)
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fi
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else
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$1=$libpcap
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places=`ls $srcdir/.. | sed -e 's,/$,,' -e "s,^,$srcdir/../," | \
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egrep '/libpcap-[[0-9]]*.[[0-9]]*(.[[0-9]]*)?([[ab]][[0-9]]*)?$'`
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if test -r $d/pcap.h; then
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$2="-I$d $$2"
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elif test -r $places/pcap.h; then
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$2="-I$places $$2"
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else
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AC_MSG_ERROR(cannot find pcap.h, see INSTALL)
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fi
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AC_MSG_RESULT($libpcap)
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fi
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LIBS="$libpcap $LIBS"
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case "$host_os" in
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aix*)
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pseexe="/lib/pse.exp"
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AC_MSG_CHECKING(for $pseexe)
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if test -f $pseexe ; then
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AC_MSG_RESULT(yes)
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LIBS="$LIBS -I:$pseexe"
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fi
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#
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# We need "-lodm" and "-lcfg", as libpcap requires them on
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# AIX, and we just build a static libpcap.a and thus can't
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# arrange that when you link with libpcap you automatically
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# link with those libraries.
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#
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LIBS="$LIBS -lodm -lcfg"
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;;
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esac
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dnl
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dnl Check for "pcap_list_datalinks()", "pcap_set_datalink()",
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dnl and "pcap_datalink_name_to_val()", and use substitute versions
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dnl if they're not present.
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dnl
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AC_CHECK_FUNC(pcap_list_datalinks,
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AC_DEFINE(HAVE_PCAP_LIST_DATALINKS),
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[
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AC_LIBOBJ(datalinks)
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])
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AC_CHECK_FUNC(pcap_set_datalink,
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AC_DEFINE(HAVE_PCAP_SET_DATALINK))
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AC_CHECK_FUNC(pcap_datalink_name_to_val,
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[
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AC_DEFINE(HAVE_PCAP_DATALINK_NAME_TO_VAL)
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AC_CHECK_FUNC(pcap_datalink_val_to_description,
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AC_DEFINE(HAVE_PCAP_DATALINK_VAL_TO_DESCRIPTION),
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[
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AC_LIBOBJ(dlnames)
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])
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],
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[
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AC_LIBOBJ(dlnames)
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])
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dnl
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dnl Check for "pcap_breakloop()"; you can't substitute for it if
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dnl it's absent (it has hooks into the live capture routines),
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dnl so just define the HAVE_ value if it's there.
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dnl
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AC_CHECK_FUNCS(pcap_breakloop)
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dnl
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dnl Check for "pcap_dump_ftell()" and use a substitute version
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dnl if it's not present.
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AC_CHECK_FUNC(pcap_dump_ftell,
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AC_DEFINE(HAVE_PCAP_DUMP_FTELL),
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[
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AC_LIBOBJ(pcap_dump_ftell)
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])
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])
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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_BEFORE([$0], [AC_LBL_LIBPCAP])
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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 "$host_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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dnl prefer sigaction() to sigset()
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AC_CHECK_FUNCS(sigaction)
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|
if test $ac_cv_func_sigaction = no ; then
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AC_CHECK_FUNCS(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, make sure we have ANSI ioctl definitions
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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,
|
|
[if test "$GCC" = yes ; then
|
|
AC_MSG_CHECKING(for ANSI ioctl definitions)
|
|
AC_CACHE_VAL(ac_cv_lbl_gcc_fixincludes,
|
|
AC_TRY_COMPILE(
|
|
[/*
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|
* This generates a "duplicate case value" when fixincludes
|
|
* has not be run.
|
|
*/
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|
# include <sys/types.h>
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|
# include <sys/time.h>
|
|
# include <sys/ioctl.h>
|
|
# ifdef HAVE_SYS_IOCCOM_H
|
|
# include <sys/ioccom.h>
|
|
# endif],
|
|
[switch (0) {
|
|
case _IO('A', 1):;
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|
case _IO('B', 1):;
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|
}],
|
|
ac_cv_lbl_gcc_fixincludes=yes,
|
|
ac_cv_lbl_gcc_fixincludes=no))
|
|
AC_MSG_RESULT($ac_cv_lbl_gcc_fixincludes)
|
|
if test $ac_cv_lbl_gcc_fixincludes = no ; then
|
|
# Don't cache failure
|
|
unset ac_cv_lbl_gcc_fixincludes
|
|
AC_MSG_ERROR(see the INSTALL for more info)
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|
fi
|
|
fi])
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|
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|
dnl
|
|
dnl Check for flex, default to lex
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|
dnl Require flex 2.4 or higher
|
|
dnl Check for bison, default to yacc
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|
dnl Default to lex/yacc if both flex and bison are not available
|
|
dnl Define the yy prefix string if using flex and bison
|
|
dnl
|
|
dnl usage:
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|
dnl
|
|
dnl AC_LBL_LEX_AND_YACC(lex, yacc, yyprefix)
|
|
dnl
|
|
dnl results:
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|
dnl
|
|
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
|
|
AC_DEFUN(AC_LBL_LEX_AND_YACC,
|
|
[AC_ARG_WITH(flex, [ --without-flex don't use flex])
|
|
AC_ARG_WITH(bison, [ --without-bison don't use bison])
|
|
if test "$with_flex" = no ; then
|
|
$1=lex
|
|
else
|
|
AC_CHECK_PROGS($1, flex, lex)
|
|
fi
|
|
if test "$$1" = flex ; then
|
|
# The -V flag was added in 2.4
|
|
AC_MSG_CHECKING(for flex 2.4 or higher)
|
|
AC_CACHE_VAL(ac_cv_lbl_flex_v24,
|
|
if flex -V >/dev/null 2>&1; then
|
|
ac_cv_lbl_flex_v24=yes
|
|
else
|
|
ac_cv_lbl_flex_v24=no
|
|
fi)
|
|
AC_MSG_RESULT($ac_cv_lbl_flex_v24)
|
|
if test $ac_cv_lbl_flex_v24 = no ; then
|
|
s="2.4 or higher required"
|
|
AC_MSG_WARN(ignoring obsolete flex executable ($s))
|
|
$1=lex
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|
fi
|
|
fi
|
|
if test "$with_bison" = no ; then
|
|
$2=yacc
|
|
else
|
|
AC_CHECK_PROGS($2, bison, yacc)
|
|
fi
|
|
if test "$$2" = bison ; then
|
|
$2="$$2 -y"
|
|
fi
|
|
if test "$$1" != lex -a "$$2" = yacc -o "$$1" = lex -a "$$2" != yacc ; then
|
|
AC_MSG_WARN(don't have both flex and bison; reverting to lex/yacc)
|
|
$1=lex
|
|
$2=yacc
|
|
fi
|
|
if test "$$1" = flex -a -n "$3" ; then
|
|
$1="$$1 -P$3"
|
|
$2="$$2 -p $3"
|
|
fi])
|
|
|
|
dnl
|
|
dnl Checks to see if union wait is used with WEXITSTATUS()
|
|
dnl
|
|
dnl usage:
|
|
dnl
|
|
dnl AC_LBL_UNION_WAIT
|
|
dnl
|
|
dnl results:
|
|
dnl
|
|
dnl DECLWAITSTATUS (defined)
|
|
dnl
|
|
AC_DEFUN(AC_LBL_UNION_WAIT,
|
|
[AC_MSG_CHECKING(if union wait is used)
|
|
AC_CACHE_VAL(ac_cv_lbl_union_wait,
|
|
AC_TRY_COMPILE([
|
|
# include <sys/types.h>
|
|
# include <sys/wait.h>],
|
|
[int status;
|
|
u_int i = WEXITSTATUS(status);
|
|
u_int j = waitpid(0, &status, 0);],
|
|
ac_cv_lbl_union_wait=no,
|
|
ac_cv_lbl_union_wait=yes))
|
|
AC_MSG_RESULT($ac_cv_lbl_union_wait)
|
|
if test $ac_cv_lbl_union_wait = yes ; then
|
|
AC_DEFINE(DECLWAITSTATUS,union wait)
|
|
else
|
|
AC_DEFINE(DECLWAITSTATUS,int)
|
|
fi])
|
|
|
|
dnl
|
|
dnl Checks to see if the sockaddr struct has the 4.4 BSD sa_len member
|
|
dnl
|
|
dnl usage:
|
|
dnl
|
|
dnl AC_LBL_SOCKADDR_SA_LEN
|
|
dnl
|
|
dnl results:
|
|
dnl
|
|
dnl HAVE_SOCKADDR_SA_LEN (defined)
|
|
dnl
|
|
AC_DEFUN(AC_LBL_SOCKADDR_SA_LEN,
|
|
[AC_MSG_CHECKING(if sockaddr struct has sa_len member)
|
|
AC_CACHE_VAL(ac_cv_lbl_sockaddr_has_sa_len,
|
|
AC_TRY_COMPILE([
|
|
# include <sys/types.h>
|
|
# include <sys/socket.h>],
|
|
[u_int i = sizeof(((struct sockaddr *)0)->sa_len)],
|
|
ac_cv_lbl_sockaddr_has_sa_len=yes,
|
|
ac_cv_lbl_sockaddr_has_sa_len=no))
|
|
AC_MSG_RESULT($ac_cv_lbl_sockaddr_has_sa_len)
|
|
if test $ac_cv_lbl_sockaddr_has_sa_len = yes ; then
|
|
AC_DEFINE(HAVE_SOCKADDR_SA_LEN)
|
|
fi])
|
|
|
|
dnl
|
|
dnl Checks to see if -R is used
|
|
dnl
|
|
dnl usage:
|
|
dnl
|
|
dnl AC_LBL_HAVE_RUN_PATH
|
|
dnl
|
|
dnl results:
|
|
dnl
|
|
dnl ac_cv_lbl_have_run_path (yes or no)
|
|
dnl
|
|
AC_DEFUN(AC_LBL_HAVE_RUN_PATH,
|
|
[AC_MSG_CHECKING(for ${CC-cc} -R)
|
|
AC_CACHE_VAL(ac_cv_lbl_have_run_path,
|
|
[echo 'main(){}' > conftest.c
|
|
${CC-cc} -o conftest conftest.c -R/a1/b2/c3 >conftest.out 2>&1
|
|
if test ! -s conftest.out ; then
|
|
ac_cv_lbl_have_run_path=yes
|
|
else
|
|
ac_cv_lbl_have_run_path=no
|
|
fi
|
|
rm -f conftest*])
|
|
AC_MSG_RESULT($ac_cv_lbl_have_run_path)
|
|
])
|
|
|
|
dnl
|
|
dnl Check whether a given format can be used to print 64-bit integers
|
|
dnl
|
|
AC_DEFUN(AC_LBL_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 <inttypes.h>
|
|
# endif
|
|
# ifdef HAVE_SYS_BITYPES_H
|
|
#include <sys/bitypes.h>
|
|
# endif
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
|
|
main()
|
|
{
|
|
u_int64_t 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")
|
|
AC_DEFINE(PRIo64, "$1o")
|
|
AC_DEFINE(PRIx64, "$1x")
|
|
AC_DEFINE(PRIu64, "$1u")
|
|
AC_MSG_RESULT(yes)
|
|
],
|
|
[
|
|
AC_MSG_RESULT(no)
|
|
$2
|
|
])
|
|
])
|
|
|
|
dnl
|
|
dnl Checks to see if unaligned memory accesses fail
|
|
dnl
|
|
dnl usage:
|
|
dnl
|
|
dnl AC_LBL_UNALIGNED_ACCESS
|
|
dnl
|
|
dnl results:
|
|
dnl
|
|
dnl LBL_ALIGN (DEFINED)
|
|
dnl
|
|
AC_DEFUN(AC_LBL_UNALIGNED_ACCESS,
|
|
[AC_MSG_CHECKING(if unaligned accesses fail)
|
|
AC_CACHE_VAL(ac_cv_lbl_unaligned_fail,
|
|
[case "$host_cpu" in
|
|
|
|
#
|
|
# These are CPU types where:
|
|
#
|
|
# the CPU faults on an unaligned access, but at least some
|
|
# OSes that support that CPU catch the fault and simulate
|
|
# the unaligned access (e.g., Alpha/{Digital,Tru64} UNIX) -
|
|
# the simulation is slow, so we don't want to use it;
|
|
#
|
|
# the CPU, I infer (from the old
|
|
#
|
|
# XXX: should also check that they don't do weird things (like on arm)
|
|
#
|
|
# comment) doesn't fault on unaligned accesses, but doesn't
|
|
# do a normal unaligned fetch, either (e.g., presumably, ARM);
|
|
#
|
|
# for whatever reason, the test program doesn't work
|
|
# (this has been claimed to be the case for several of those
|
|
# CPUs - I don't know what the problem is; the problem
|
|
# was reported as "the test program dumps core" for SuperH,
|
|
# but that's what the test program is *supposed* to do -
|
|
# it dumps core before it writes anything, so the test
|
|
# for an empty output file should find an empty output
|
|
# file and conclude that unaligned accesses don't work).
|
|
#
|
|
# This run-time test won't work if you're cross-compiling, so
|
|
# in order to support cross-compiling for a particular CPU,
|
|
# we have to wire in the list of CPU types anyway, as far as
|
|
# I know, so perhaps we should just have a set of CPUs on
|
|
# which we know it doesn't work, a set of CPUs on which we
|
|
# know it does work, and have the script just fail on other
|
|
# cpu types and update it when such a failure occurs.
|
|
#
|
|
alpha*|arm*|hp*|mips*|sh*|sparc*|ia64|nv1)
|
|
ac_cv_lbl_unaligned_fail=yes
|
|
;;
|
|
|
|
*)
|
|
cat >conftest.c <<EOF
|
|
# include <sys/types.h>
|
|
# include <sys/wait.h>
|
|
# include <stdio.h>
|
|
unsigned char a[[5]] = { 1, 2, 3, 4, 5 };
|
|
main() {
|
|
unsigned int i;
|
|
pid_t pid;
|
|
int status;
|
|
/* avoid "core dumped" message */
|
|
pid = fork();
|
|
if (pid < 0)
|
|
exit(2);
|
|
if (pid > 0) {
|
|
/* parent */
|
|
pid = waitpid(pid, &status, 0);
|
|
if (pid < 0)
|
|
exit(3);
|
|
exit(!WIFEXITED(status));
|
|
}
|
|
/* child */
|
|
i = *(unsigned int *)&a[[1]];
|
|
printf("%d\n", i);
|
|
exit(0);
|
|
}
|
|
EOF
|
|
${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS \
|
|
conftest.c $LIBS >/dev/null 2>&1
|
|
if test ! -x conftest ; then
|
|
dnl failed to compile for some reason
|
|
ac_cv_lbl_unaligned_fail=yes
|
|
else
|
|
./conftest >conftest.out
|
|
if test ! -s conftest.out ; then
|
|
ac_cv_lbl_unaligned_fail=yes
|
|
else
|
|
ac_cv_lbl_unaligned_fail=no
|
|
fi
|
|
fi
|
|
rm -f conftest* core core.conftest
|
|
;;
|
|
esac])
|
|
AC_MSG_RESULT($ac_cv_lbl_unaligned_fail)
|
|
if test $ac_cv_lbl_unaligned_fail = yes ; then
|
|
AC_DEFINE(LBL_ALIGN)
|
|
fi])
|
|
|
|
dnl
|
|
dnl If using gcc and the file .devel exists:
|
|
dnl Compile with -g (if supported) and -Wall
|
|
dnl If using gcc 2 or later, do extra prototype checking and some other
|
|
dnl checks
|
|
dnl If an os prototype include exists, symlink os-proto.h to it
|
|
dnl
|
|
dnl usage:
|
|
dnl
|
|
dnl AC_LBL_DEVEL(copt)
|
|
dnl
|
|
dnl results:
|
|
dnl
|
|
dnl $1 (copt appended)
|
|
dnl HAVE_OS_PROTO_H (defined)
|
|
dnl os-proto.h (symlinked)
|
|
dnl
|
|
AC_DEFUN(AC_LBL_DEVEL,
|
|
[rm -f os-proto.h
|
|
if test "${LBL_CFLAGS+set}" = set; then
|
|
$1="$$1 ${LBL_CFLAGS}"
|
|
fi
|
|
if test -f .devel ; then
|
|
if test "$GCC" = yes ; then
|
|
if test "${LBL_CFLAGS+set}" != set; then
|
|
if test "$ac_cv_prog_cc_g" = yes ; then
|
|
$1="-g $$1"
|
|
fi
|
|
$1="$$1 -Wall"
|
|
if test $ac_cv_lbl_gcc_vers -gt 1 ; then
|
|
$1="$$1 -Wmissing-prototypes -Wstrict-prototypes -Wwrite-strings -Wpointer-arith -W"
|
|
fi
|
|
fi
|
|
else
|
|
case "$host_os" in
|
|
|
|
irix6*)
|
|
V_CCOPT="$V_CCOPT -n32"
|
|
;;
|
|
|
|
*)
|
|
;;
|
|
esac
|
|
fi
|
|
os=`echo $host_os | sed -e 's/\([[0-9]][[0-9]]*\)[[^0-9]].*$/\1/'`
|
|
name="lbl/os-$os.h"
|
|
if test -f $name ; then
|
|
ln -s $name os-proto.h
|
|
AC_DEFINE(HAVE_OS_PROTO_H)
|
|
else
|
|
AC_MSG_WARN(can't find $name)
|
|
fi
|
|
fi])
|
|
|
|
dnl
|
|
dnl Improved version of AC_CHECK_LIB
|
|
dnl
|
|
dnl Thanks to John Hawkinson (jhawk@mit.edu)
|
|
dnl
|
|
dnl usage:
|
|
dnl
|
|
dnl AC_LBL_CHECK_LIB(LIBRARY, FUNCTION [, ACTION-IF-FOUND [,
|
|
dnl ACTION-IF-NOT-FOUND [, OTHER-LIBRARIES]]])
|
|
dnl
|
|
dnl results:
|
|
dnl
|
|
dnl LIBS
|
|
dnl
|
|
dnl XXX - "AC_LBL_LIBRARY_NET" was redone to use "AC_SEARCH_LIBS"
|
|
dnl rather than "AC_LBL_CHECK_LIB", so this isn't used any more.
|
|
dnl We keep it around for reference purposes in case it's ever
|
|
dnl useful in the future.
|
|
dnl
|
|
|
|
define(AC_LBL_CHECK_LIB,
|
|
[AC_MSG_CHECKING([for $2 in -l$1])
|
|
dnl Use a cache variable name containing the library, function
|
|
dnl name, and extra libraries to link with, because the test really is
|
|
dnl for library $1 defining function $2, when linked with potinal
|
|
dnl library $5, not just for library $1. Separate tests with the same
|
|
dnl $1 and different $2's or $5's may have different results.
|
|
ac_lib_var=`echo $1['_']$2['_']$5 | sed 'y%./+- %__p__%'`
|
|
AC_CACHE_VAL(ac_cv_lbl_lib_$ac_lib_var,
|
|
[ac_save_LIBS="$LIBS"
|
|
LIBS="-l$1 $5 $LIBS"
|
|
AC_TRY_LINK(dnl
|
|
ifelse([$2], [main], , dnl Avoid conflicting decl of main.
|
|
[/* Override any gcc2 internal prototype to avoid an error. */
|
|
]ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
|
|
extern "C"
|
|
#endif
|
|
])dnl
|
|
[/* We use char because int might match the return type of a gcc2
|
|
builtin and then its argument prototype would still apply. */
|
|
char $2();
|
|
]),
|
|
[$2()],
|
|
eval "ac_cv_lbl_lib_$ac_lib_var=yes",
|
|
eval "ac_cv_lbl_lib_$ac_lib_var=no")
|
|
LIBS="$ac_save_LIBS"
|
|
])dnl
|
|
if eval "test \"`echo '$ac_cv_lbl_lib_'$ac_lib_var`\" = yes"; then
|
|
AC_MSG_RESULT(yes)
|
|
ifelse([$3], ,
|
|
[changequote(, )dnl
|
|
ac_tr_lib=HAVE_LIB`echo $1 | sed -e 's/[^a-zA-Z0-9_]/_/g' \
|
|
-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
|
|
changequote([, ])dnl
|
|
AC_DEFINE_UNQUOTED($ac_tr_lib)
|
|
LIBS="-l$1 $LIBS"
|
|
], [$3])
|
|
else
|
|
AC_MSG_RESULT(no)
|
|
ifelse([$4], , , [$4
|
|
])dnl
|
|
fi
|
|
])
|
|
|
|
dnl
|
|
dnl AC_LBL_LIBRARY_NET
|
|
dnl
|
|
dnl This test is for network applications that need socket() and
|
|
dnl gethostbyname() -ish functions. Under Solaris, those applications
|
|
dnl need to link with "-lsocket -lnsl". Under IRIX, they need to link
|
|
dnl with "-lnsl" but should *not* link with "-lsocket" because
|
|
dnl libsocket.a breaks a number of things (for instance:
|
|
dnl gethostbyname() under IRIX 5.2, and snoop sockets under most
|
|
dnl versions of IRIX).
|
|
dnl
|
|
dnl Unfortunately, many application developers are not aware of this,
|
|
dnl and mistakenly write tests that cause -lsocket to be used under
|
|
dnl IRIX. It is also easy to write tests that cause -lnsl to be used
|
|
dnl under operating systems where neither are necessary (or useful),
|
|
dnl such as SunOS 4.1.4, which uses -lnsl for TLI.
|
|
dnl
|
|
dnl This test exists so that every application developer does not test
|
|
dnl this in a different, and subtly broken fashion.
|
|
|
|
dnl It has been argued that this test should be broken up into two
|
|
dnl seperate tests, one for the resolver libraries, and one for the
|
|
dnl libraries necessary for using Sockets API. Unfortunately, the two
|
|
dnl are carefully intertwined and allowing the autoconf user to use
|
|
dnl them independantly potentially results in unfortunate ordering
|
|
dnl dependancies -- as such, such component macros would have to
|
|
dnl carefully use indirection and be aware if the other components were
|
|
dnl executed. Since other autoconf macros do not go to this trouble,
|
|
dnl and almost no applications use sockets without the resolver, this
|
|
dnl complexity has not been implemented.
|
|
dnl
|
|
dnl The check for libresolv is in case you are attempting to link
|
|
dnl statically and happen to have a libresolv.a lying around (and no
|
|
dnl libnsl.a).
|
|
dnl
|
|
AC_DEFUN(AC_LBL_LIBRARY_NET, [
|
|
# Most operating systems have gethostbyname() in the default searched
|
|
# libraries (i.e. libc):
|
|
# Some OSes (eg. Solaris) place it in libnsl
|
|
# Some strange OSes (SINIX) have it in libsocket:
|
|
AC_SEARCH_LIBS(gethostbyname, nsl socket resolv)
|
|
# Unfortunately libsocket sometimes depends on libnsl and
|
|
# AC_SEARCH_LIBS isn't up to the task of handling dependencies like this.
|
|
if test "$ac_cv_search_gethostbyname" = "no"
|
|
then
|
|
AC_CHECK_LIB(socket, gethostbyname,
|
|
LIBS="-lsocket -lnsl $LIBS", , -lnsl)
|
|
fi
|
|
AC_SEARCH_LIBS(socket, socket, ,
|
|
AC_CHECK_LIB(socket, socket, LIBS="-lsocket -lnsl $LIBS", , -lnsl))
|
|
# DLPI needs putmsg under HPUX so test for -lstr while we're at it
|
|
AC_SEARCH_LIBS(putmsg, str)
|
|
])
|
|
|
|
dnl Copyright (c) 1999 WIDE Project. All rights reserved.
|
|
dnl
|
|
dnl Redistribution and use in source and binary forms, with or without
|
|
dnl modification, are permitted provided that the following conditions
|
|
dnl are met:
|
|
dnl 1. Redistributions of source code must retain the above copyright
|
|
dnl notice, this list of conditions and the following disclaimer.
|
|
dnl 2. Redistributions in binary form must reproduce the above copyright
|
|
dnl notice, this list of conditions and the following disclaimer in the
|
|
dnl documentation and/or other materials provided with the distribution.
|
|
dnl 3. Neither the name of the project nor the names of its contributors
|
|
dnl may be used to endorse or promote products derived from this software
|
|
dnl without specific prior written permission.
|
|
dnl
|
|
dnl THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
|
|
dnl ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
dnl IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
dnl ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
|
|
dnl FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
dnl DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
dnl OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
dnl HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
dnl LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
dnl OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
dnl SUCH DAMAGE.
|
|
|
|
dnl
|
|
dnl Checks to see if AF_INET6 is defined
|
|
AC_DEFUN(AC_CHECK_AF_INET6, [
|
|
AC_MSG_CHECKING(for AF_INET6)
|
|
AC_CACHE_VAL($1,
|
|
AC_TRY_COMPILE([
|
|
# include <sys/types.h>
|
|
# include <sys/socket.h>],
|
|
[int a = AF_INET6],
|
|
$1=yes,
|
|
$1=no))
|
|
AC_MSG_RESULT($$1)
|
|
if test $$1 = yes ; then
|
|
AC_DEFINE(HAVE_AF_INET6)
|
|
fi
|
|
])
|
|
|
|
dnl
|
|
dnl Checks to see if the sockaddr struct has the 4.4 BSD sa_len member
|
|
dnl borrowed from LBL libpcap
|
|
AC_DEFUN(AC_CHECK_SA_LEN, [
|
|
AC_MSG_CHECKING(if sockaddr struct has sa_len member)
|
|
AC_CACHE_VAL($1,
|
|
AC_TRY_COMPILE([
|
|
# include <sys/types.h>
|
|
# include <sys/socket.h>],
|
|
[u_int i = sizeof(((struct sockaddr *)0)->sa_len)],
|
|
$1=yes,
|
|
$1=no))
|
|
AC_MSG_RESULT($$1)
|
|
if test $$1 = yes ; then
|
|
AC_DEFINE(HAVE_SOCKADDR_SA_LEN)
|
|
fi
|
|
])
|
|
|
|
dnl
|
|
dnl Checks for portable prototype declaration macro
|
|
AC_DEFUN(AC_CHECK_PORTABLE_PROTO, [
|
|
AC_MSG_CHECKING(for __P)
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|
AC_CACHE_VAL($1,
|
|
AC_TRY_COMPILE([
|
|
# include <unistd.h>],
|
|
[int f __P(())],
|
|
$1=yes,
|
|
$1=no))
|
|
AC_MSG_RESULT($$1)
|
|
if test $$1 = yes; then
|
|
AC_DEFINE(HAVE_PORTABLE_PROTOTYPE)
|
|
fi
|
|
])
|
|
|
|
dnl checks for u_intXX_t
|
|
AC_DEFUN(AC_CHECK_BITTYPES, [
|
|
$1=yes
|
|
dnl check for u_int8_t
|
|
AC_MSG_CHECKING(for u_int8_t)
|
|
AC_CACHE_VAL(ac_cv_u_int8_t,
|
|
AC_TRY_COMPILE([
|
|
# include <sys/types.h>],
|
|
[u_int8_t i],
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|
ac_cv_u_int8_t=yes,
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|
ac_cv_u_int8_t=no))
|
|
AC_MSG_RESULT($ac_cv_u_int8_t)
|
|
if test $ac_cv_u_int8_t = yes; then
|
|
AC_DEFINE(HAVE_U_INT8_T)
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|
else
|
|
$1=no
|
|
fi
|
|
dnl check for u_int16_t
|
|
AC_MSG_CHECKING(for u_int16_t)
|
|
AC_CACHE_VAL(ac_cv_u_int16_t,
|
|
AC_TRY_COMPILE([
|
|
# include <sys/types.h>],
|
|
[u_int16_t i],
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|
ac_cv_u_int16_t=yes,
|
|
ac_cv_u_int16_t=no))
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|
AC_MSG_RESULT($ac_cv_u_int16_t)
|
|
if test $ac_cv_u_int16_t = yes; then
|
|
AC_DEFINE(HAVE_U_INT16_T)
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|
else
|
|
$1=no
|
|
fi
|
|
dnl check for u_int32_t
|
|
AC_MSG_CHECKING(for u_int32_t)
|
|
AC_CACHE_VAL(ac_cv_u_int32_t,
|
|
AC_TRY_COMPILE([
|
|
# include <sys/types.h>],
|
|
[u_int32_t i],
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|
ac_cv_u_int32_t=yes,
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|
ac_cv_u_int32_t=no))
|
|
AC_MSG_RESULT($ac_cv_u_int32_t)
|
|
if test $ac_cv_u_int32_t = yes; then
|
|
AC_DEFINE(HAVE_U_INT32_T)
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|
else
|
|
$1=no
|
|
fi
|
|
dnl check for u_int64_t
|
|
AC_MSG_CHECKING(for u_int64_t)
|
|
AC_CACHE_VAL(ac_cv_u_int64_t,
|
|
AC_TRY_COMPILE([
|
|
# include <sys/types.h>],
|
|
[u_int64_t i],
|
|
ac_cv_u_int64_t=yes,
|
|
ac_cv_u_int64_t=no))
|
|
AC_MSG_RESULT($ac_cv_u_int64_t)
|
|
if test $ac_cv_u_int64_t = yes; then
|
|
AC_DEFINE(HAVE_U_INT64_T)
|
|
else
|
|
$1=no
|
|
fi
|
|
])
|
|
|
|
dnl
|
|
dnl Checks for addrinfo structure
|
|
AC_DEFUN(AC_STRUCT_ADDRINFO, [
|
|
AC_MSG_CHECKING(for addrinfo)
|
|
AC_CACHE_VAL($1,
|
|
AC_TRY_COMPILE([
|
|
# include <netdb.h>],
|
|
[struct addrinfo a],
|
|
$1=yes,
|
|
$1=no))
|
|
AC_MSG_RESULT($$1)
|
|
if test $$1 = yes; then
|
|
AC_DEFINE(HAVE_ADDRINFO)
|
|
else
|
|
AC_DEFINE(NEED_ADDRINFO_H)
|
|
fi
|
|
])
|
|
|
|
dnl
|
|
dnl Checks for NI_MAXSERV
|
|
AC_DEFUN(AC_NI_MAXSERV, [
|
|
AC_MSG_CHECKING(for NI_MAXSERV)
|
|
AC_CACHE_VAL($1,
|
|
AC_EGREP_CPP(yes, [#include <netdb.h>
|
|
#ifdef NI_MAXSERV
|
|
yes
|
|
#endif],
|
|
$1=yes,
|
|
$1=no))
|
|
AC_MSG_RESULT($$1)
|
|
if test $$1 != yes; then
|
|
AC_DEFINE(NEED_ADDRINFO_H)
|
|
fi
|
|
])
|
|
|
|
dnl
|
|
dnl Checks for NI_NAMEREQD
|
|
AC_DEFUN(AC_NI_NAMEREQD, [
|
|
AC_MSG_CHECKING(for NI_NAMEREQD)
|
|
AC_CACHE_VAL($1,
|
|
AC_EGREP_CPP(yes, [#include <netdb.h>
|
|
#ifdef NI_NOFQDN
|
|
yes
|
|
#endif],
|
|
$1=yes,
|
|
$1=no))
|
|
AC_MSG_RESULT($$1)
|
|
if test $$1 != yes; then
|
|
AC_DEFINE(NEED_ADDRINFO_H)
|
|
fi
|
|
])
|
|
|
|
dnl
|
|
dnl Checks for sockaddr_storage structure
|
|
AC_DEFUN(AC_STRUCT_SA_STORAGE, [
|
|
AC_MSG_CHECKING(for sockaddr_storage)
|
|
AC_CACHE_VAL($1,
|
|
AC_TRY_COMPILE([
|
|
# include <sys/types.h>
|
|
# include <sys/socket.h>],
|
|
[struct sockaddr_storage s],
|
|
$1=yes,
|
|
$1=no))
|
|
AC_MSG_RESULT($$1)
|
|
if test $$1 = yes; then
|
|
AC_DEFINE(HAVE_SOCKADDR_STORAGE)
|
|
fi
|
|
])
|
|
|
|
dnl
|
|
dnl Checks for macro of IP address size
|
|
AC_DEFUN(AC_CHECK_ADDRSZ, [
|
|
$1=yes
|
|
dnl check for INADDRSZ
|
|
AC_MSG_CHECKING(for INADDRSZ)
|
|
AC_CACHE_VAL(ac_cv_inaddrsz,
|
|
AC_TRY_COMPILE([
|
|
# include <arpa/nameser.h>],
|
|
[int a = INADDRSZ],
|
|
ac_cv_inaddrsz=yes,
|
|
ac_cv_inaddrsz=no))
|
|
AC_MSG_RESULT($ac_cv_inaddrsz)
|
|
if test $ac_cv_inaddrsz = yes; then
|
|
AC_DEFINE(HAVE_INADDRSZ)
|
|
else
|
|
$1=no
|
|
fi
|
|
dnl check for IN6ADDRSZ
|
|
AC_MSG_CHECKING(for IN6ADDRSZ)
|
|
AC_CACHE_VAL(ac_cv_in6addrsz,
|
|
AC_TRY_COMPILE([
|
|
# include <arpa/nameser.h>],
|
|
[int a = IN6ADDRSZ],
|
|
ac_cv_in6addrsz=yes,
|
|
ac_cv_in6addrsz=no))
|
|
AC_MSG_RESULT($ac_cv_in6addrsz)
|
|
if test $ac_cv_in6addrsz = yes; then
|
|
AC_DEFINE(HAVE_IN6ADDRSZ)
|
|
else
|
|
$1=no
|
|
fi
|
|
])
|
|
|
|
dnl
|
|
dnl check for RES_USE_INET6
|
|
AC_DEFUN(AC_CHECK_RES_USE_INET6, [
|
|
AC_MSG_CHECKING(for RES_USE_INET6)
|
|
AC_CACHE_VAL($1,
|
|
AC_TRY_COMPILE([
|
|
# include <sys/types.h>
|
|
# include <netinet/in.h>
|
|
# include <resolv.h>],
|
|
[int a = RES_USE_INET6],
|
|
$1=yes,
|
|
$1=no))
|
|
AC_MSG_RESULT($$1)
|
|
if test $$1 = yes; then
|
|
AC_DEFINE(HAVE_RES_USE_INET6)
|
|
fi
|
|
])
|
|
|
|
dnl
|
|
dnl check for AAAA
|
|
AC_DEFUN(AC_CHECK_AAAA, [
|
|
AC_MSG_CHECKING(for AAAA)
|
|
AC_CACHE_VAL($1,
|
|
AC_TRY_COMPILE([
|
|
# include <sys/types.h>
|
|
# include <arpa/nameser.h>],
|
|
[int a = T_AAAA],
|
|
$1=yes,
|
|
$1=no))
|
|
AC_MSG_RESULT($$1)
|
|
if test $$1 = yes; then
|
|
AC_DEFINE(HAVE_AAAA)
|
|
fi
|
|
])
|
|
|
|
dnl
|
|
dnl check for struct res_state_ext
|
|
AC_DEFUN(AC_STRUCT_RES_STATE_EXT, [
|
|
AC_MSG_CHECKING(for res_state_ext)
|
|
AC_CACHE_VAL($1,
|
|
AC_TRY_COMPILE([
|
|
# include <sys/types.h>
|
|
# include <netinet/in.h>
|
|
# include <netinet6/in6.h>
|
|
# include <resolv.h>],
|
|
[struct __res_state_ext e],
|
|
$1=yes,
|
|
$1=no))
|
|
AC_MSG_RESULT($$1)
|
|
if test $$1 = yes; then
|
|
AC_DEFINE(HAVE_RES_STATE_EXT)
|
|
fi
|
|
])
|
|
|
|
dnl
|
|
dnl check for struct res_state_ext
|
|
AC_DEFUN(AC_STRUCT_RES_STATE, [
|
|
AC_MSG_CHECKING(for nsort in res_state)
|
|
AC_CACHE_VAL($1,
|
|
AC_TRY_COMPILE([
|
|
# include <sys/types.h>
|
|
# include <netinet/in.h>
|
|
# include <netinet6/in6.h>
|
|
# include <resolv.h>],
|
|
[struct __res_state e; e.nsort = 0],
|
|
$1=yes,
|
|
$1=no))
|
|
AC_MSG_RESULT($$1)
|
|
if test $$1 = yes; then
|
|
AC_DEFINE(HAVE_NEW_RES_STATE)
|
|
fi
|
|
])
|
|
|
|
dnl
|
|
dnl check for h_errno
|
|
AC_DEFUN(AC_VAR_H_ERRNO, [
|
|
AC_MSG_CHECKING(for h_errno)
|
|
AC_CACHE_VAL(ac_cv_var_h_errno,
|
|
AC_TRY_COMPILE([
|
|
# include <sys/types.h>
|
|
# include <netdb.h>],
|
|
[int foo = h_errno;],
|
|
ac_cv_var_h_errno=yes,
|
|
ac_cv_var_h_errno=no))
|
|
AC_MSG_RESULT($ac_cv_var_h_errno)
|
|
if test "$ac_cv_var_h_errno" = "yes"; then
|
|
AC_DEFINE(HAVE_H_ERRNO)
|
|
fi
|
|
])
|
|
|
|
dnl
|
|
dnl Test for __attribute__
|
|
dnl
|
|
|
|
AC_DEFUN(AC_C___ATTRIBUTE__, [
|
|
AC_MSG_CHECKING(for __attribute__)
|
|
AC_CACHE_VAL(ac_cv___attribute__, [
|
|
AC_COMPILE_IFELSE(
|
|
AC_LANG_SOURCE([[
|
|
#include <stdlib.h>
|
|
|
|
static void foo(void) __attribute__ ((noreturn));
|
|
|
|
static void
|
|
foo(void)
|
|
{
|
|
exit(1);
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
foo();
|
|
}
|
|
]]),
|
|
ac_cv___attribute__=yes,
|
|
ac_cv___attribute__=no)])
|
|
if test "$ac_cv___attribute__" = "yes"; then
|
|
AC_DEFINE(HAVE___ATTRIBUTE__, 1, [define if your compiler has __attribute__])
|
|
V_DEFS="$V_DEFS -D_U_=\"__attribute__((unused))\""
|
|
else
|
|
V_DEFS="$V_DEFS -D_U_=\"\""
|
|
fi
|
|
AC_MSG_RESULT($ac_cv___attribute__)
|
|
])
|