| dnl Copyright (c) 1995, 1996, 1997, 1998 |
| dnl The Regents of the University of California. All rights reserved. |
| dnl |
| dnl Redistribution and use in source and binary forms, with or without |
| dnl modification, are permitted provided that: (1) source code distributions |
| dnl retain the above copyright notice and this paragraph in its entirety, (2) |
| dnl distributions including binary code include the above copyright notice and |
| dnl this paragraph in its entirety in the documentation or other materials |
| dnl provided with the distribution, and (3) all advertising materials mentioning |
| dnl features or use of this software display the following acknowledgement: |
| dnl ``This product includes software developed by the University of California, |
| dnl Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
| dnl the University nor the names of its contributors may be used to endorse |
| dnl or promote products derived from this software without specific prior |
| dnl written permission. |
| dnl THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
| dnl WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
| dnl MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| dnl |
| dnl LBL autoconf macros |
| dnl |
| |
| dnl |
| dnl Do whatever AC_LBL_C_INIT work is necessary before using AC_PROG_CC. |
| dnl |
| dnl It appears that newer versions of autoconf (2.64 and later) will, |
| dnl if you use AC_TRY_COMPILE in a macro, stick AC_PROG_CC at the |
| dnl beginning of the macro, even if the macro itself calls AC_PROG_CC. |
| dnl See the "Prerequisite Macros" and "Expanded Before Required" sections |
| dnl in the Autoconf documentation. |
| dnl |
| dnl This causes a steaming heap of fail in our case, as we were, in |
| dnl AC_LBL_C_INIT, doing the tests we now do in AC_LBL_C_INIT_BEFORE_CC, |
| dnl calling AC_PROG_CC, and then doing the tests we now do in |
| dnl AC_LBL_C_INIT. Now, we run AC_LBL_C_INIT_BEFORE_CC, AC_PROG_CC, |
| dnl and AC_LBL_C_INIT at the top level. |
| dnl |
| AC_DEFUN(AC_LBL_C_INIT_BEFORE_CC, |
| [ |
| AC_BEFORE([$0], [AC_LBL_C_INIT]) |
| AC_BEFORE([$0], [AC_PROG_CC]) |
| AC_BEFORE([$0], [AC_LBL_FIXINCLUDES]) |
| AC_BEFORE([$0], [AC_LBL_DEVEL]) |
| AC_ARG_WITH(gcc, [ --without-gcc don't use gcc]) |
| $1="" |
| if test "${srcdir}" != "." ; then |
| $1="-I$srcdir" |
| fi |
| if test "${CFLAGS+set}" = set; then |
| LBL_CFLAGS="$CFLAGS" |
| fi |
| if test -z "$CC" ; then |
| case "$host_os" in |
| |
| bsdi*) |
| AC_CHECK_PROG(SHLICC2, shlicc2, yes, no) |
| if test $SHLICC2 = yes ; then |
| CC=shlicc2 |
| export CC |
| fi |
| ;; |
| esac |
| fi |
| if test -z "$CC" -a "$with_gcc" = no ; then |
| CC=cc |
| export CC |
| fi |
| ]) |
| |
| dnl |
| dnl Determine which compiler we're using (cc or gcc) |
| dnl If using gcc, determine the version number |
| dnl If using cc: |
| dnl require that it support ansi prototypes |
| dnl use -O (AC_PROG_CC will use -g -O2 on gcc, so we don't need to |
| dnl do that ourselves for gcc) |
| dnl add -g flags, as appropriate |
| dnl explicitly specify /usr/local/include |
| dnl |
| dnl NOTE WELL: with newer versions of autoconf, "gcc" means any compiler |
| dnl that defines __GNUC__, which means clang, for example, counts as "gcc". |
| dnl |
| dnl usage: |
| dnl |
| dnl AC_LBL_C_INIT(copt, incls) |
| dnl |
| dnl results: |
| dnl |
| dnl $1 (copt set) |
| dnl $2 (incls set) |
| dnl CC |
| dnl LDFLAGS |
| dnl LBL_CFLAGS |
| dnl |
| AC_DEFUN(AC_LBL_C_INIT, |
| [ |
| AC_BEFORE([$0], [AC_LBL_FIXINCLUDES]) |
| AC_BEFORE([$0], [AC_LBL_DEVEL]) |
| AC_BEFORE([$0], [AC_LBL_SHLIBS_INIT]) |
| if test "$GCC" = yes ; then |
| # |
| # -Werror forces warnings to be errors. |
| # |
| ac_lbl_cc_force_warning_errors=-Werror |
| else |
| $2="$$2 -I/usr/local/include" |
| LDFLAGS="$LDFLAGS -L/usr/local/lib" |
| |
| case "$host_os" in |
| |
| darwin*) |
| # |
| # This is assumed either to be GCC or clang, both |
| # of which use -Werror to force warnings to be errors. |
| # |
| ac_lbl_cc_force_warning_errors=-Werror |
| ;; |
| |
| hpux*) |
| # |
| # HP C, which is what we presume we're using, doesn't |
| # exit with a non-zero exit status if we hand it an |
| # invalid -W flag, can't be forced to do so even with |
| # +We, and doesn't handle GCC-style -W flags, so we |
| # don't want to try using GCC-style -W flags. |
| # |
| ac_lbl_cc_dont_try_gcc_dashW=yes |
| ;; |
| |
| irix*) |
| # |
| # MIPS C, which is what we presume we're using, doesn't |
| # necessarily exit with a non-zero exit status if we |
| # hand it an invalid -W flag, can't be forced to do |
| # so, and doesn't handle GCC-style -W flags, so we |
| # don't want to try using GCC-style -W flags. |
| # |
| ac_lbl_cc_dont_try_gcc_dashW=yes |
| # |
| # It also, apparently, defaults to "char" being |
| # unsigned, unlike most other C implementations; |
| # I suppose we could say "signed char" whenever |
| # we want to guarantee a signed "char", but let's |
| # just force signed chars. |
| # |
| # -xansi is normally the default, but the |
| # configure script was setting it; perhaps -cckr |
| # was the default in the Old Days. (Then again, |
| # that would probably be for backwards compatibility |
| # in the days when ANSI C was Shiny and New, i.e. |
| # 1989 and the early '90's, so maybe we can just |
| # drop support for those compilers.) |
| # |
| # -g is equivalent to -g2, which turns off |
| # optimization; we choose -g3, which generates |
| # debugging information but doesn't turn off |
| # optimization (even if the optimization would |
| # cause inaccuracies in debugging). |
| # |
| $1="$$1 -xansi -signed -g3" |
| ;; |
| |
| osf*) |
| # |
| # Presumed to be DEC OSF/1, Digital UNIX, or |
| # Tru64 UNIX. |
| # |
| # The DEC C compiler, which is what we presume we're |
| # using, doesn't exit with a non-zero exit status if we |
| # hand it an invalid -W flag, can't be forced to do |
| # so, and doesn't handle GCC-style -W flags, so we |
| # don't want to try using GCC-style -W flags. |
| # |
| ac_lbl_cc_dont_try_gcc_dashW=yes |
| # |
| # -g is equivalent to -g2, which turns off |
| # optimization; we choose -g3, which generates |
| # debugging information but doesn't turn off |
| # optimization (even if the optimization would |
| # cause inaccuracies in debugging). |
| # |
| $1="$$1 -g3" |
| ;; |
| |
| solaris*) |
| # |
| # Assumed to be Sun C, which requires -errwarn to force |
| # warnings to be treated as errors. |
| # |
| ac_lbl_cc_force_warning_errors=-errwarn |
| ;; |
| |
| ultrix*) |
| AC_MSG_CHECKING(that Ultrix $CC hacks const in prototypes) |
| AC_CACHE_VAL(ac_cv_lbl_cc_const_proto, |
| AC_TRY_COMPILE( |
| [#include <sys/types.h>], |
| [struct a { int b; }; |
| void c(const struct a *)], |
| ac_cv_lbl_cc_const_proto=yes, |
| ac_cv_lbl_cc_const_proto=no)) |
| AC_MSG_RESULT($ac_cv_lbl_cc_const_proto) |
| if test $ac_cv_lbl_cc_const_proto = no ; then |
| AC_DEFINE(const,[], |
| [to handle Ultrix compilers that don't support const in prototypes]) |
| fi |
| ;; |
| esac |
| $1="$$1 -O" |
| fi |
| ]) |
| |
| dnl |
| dnl Check whether, if you pass an unknown warning option to the |
| dnl compiler, it fails or just prints a warning message and succeeds. |
| dnl Set ac_lbl_unknown_warning_option_error to the appropriate flag |
| dnl to force an error if it would otherwise just print a warning message |
| dnl and succeed. |
| dnl |
| AC_DEFUN(AC_LBL_CHECK_UNKNOWN_WARNING_OPTION_ERROR, |
| [ |
| AC_MSG_CHECKING([whether the compiler fails when given an unknown warning option]) |
| save_CFLAGS="$CFLAGS" |
| CFLAGS="$CFLAGS -Wxyzzy-this-will-never-succeed-xyzzy" |
| AC_TRY_COMPILE( |
| [], |
| [return 0], |
| [ |
| AC_MSG_RESULT([no]) |
| # |
| # We're assuming this is clang, where |
| # -Werror=unknown-warning-option is the appropriate |
| # option to force the compiler to fail. |
| # |
| ac_lbl_unknown_warning_option_error="-Werror=unknown-warning-option" |
| ], |
| [ |
| AC_MSG_RESULT([yes]) |
| ]) |
| CFLAGS="$save_CFLAGS" |
| ]) |
| |
| dnl |
| dnl Check whether the compiler option specified as the second argument |
| dnl is supported by the compiler and, if so, add it to the macro |
| dnl specified as the first argument |
| dnl |
| AC_DEFUN(AC_LBL_CHECK_COMPILER_OPT, |
| [ |
| AC_MSG_CHECKING([whether the compiler supports the $2 option]) |
| save_CFLAGS="$CFLAGS" |
| if expr "x$2" : "x-W.*" >/dev/null |
| then |
| CFLAGS="$CFLAGS $ac_lbl_unknown_warning_option_error $2" |
| elif expr "x$2" : "x-f.*" >/dev/null |
| then |
| CFLAGS="$CFLAGS -Werror $2" |
| elif expr "x$2" : "x-m.*" >/dev/null |
| then |
| CFLAGS="$CFLAGS -Werror $2" |
| else |
| CFLAGS="$CFLAGS $2" |
| fi |
| AC_TRY_COMPILE( |
| [], |
| [return 0], |
| [ |
| AC_MSG_RESULT([yes]) |
| CFLAGS="$save_CFLAGS" |
| $1="$$1 $2" |
| ], |
| [ |
| AC_MSG_RESULT([no]) |
| CFLAGS="$save_CFLAGS" |
| ]) |
| ]) |
| |
| dnl |
| dnl Check whether the compiler supports an option to generate |
| dnl Makefile-style dependency lines |
| dnl |
| dnl GCC uses -M for this. Non-GCC compilers that support this |
| dnl use a variety of flags, including but not limited to -M. |
| dnl |
| dnl We test whether the flag in question is supported, as older |
| dnl versions of compilers might not support it. |
| dnl |
| dnl We don't try all the possible flags, just in case some flag means |
| dnl "generate dependencies" on one compiler but means something else |
| dnl on another compiler. |
| dnl |
| dnl Most compilers that support this send the output to the standard |
| dnl output by default. IBM's XLC, however, supports -M but sends |
| dnl the output to {sourcefile-basename}.u, and AIX has no /dev/stdout |
| dnl to work around that, so we don't bother with XLC. |
| dnl |
| AC_DEFUN(AC_LBL_CHECK_DEPENDENCY_GENERATION_OPT, |
| [ |
| AC_MSG_CHECKING([whether the compiler supports generating dependencies]) |
| if test "$GCC" = yes ; then |
| # |
| # GCC, or a compiler deemed to be GCC by AC_PROG_CC (even |
| # though it's not); we assume that, in this case, the flag |
| # would be -M. |
| # |
| ac_lbl_dependency_flag="-M" |
| else |
| # |
| # Not GCC or a compiler deemed to be GCC; what platform is |
| # this? (We're assuming that if the compiler isn't GCC |
| # it's the compiler from the vendor of the OS; that won't |
| # necessarily be true for x86 platforms, where it might be |
| # the Intel C compiler.) |
| # |
| case "$host_os" in |
| |
| irix*|osf*|darwin*) |
| # |
| # MIPS C for IRIX, DEC C, and clang all use -M. |
| # |
| ac_lbl_dependency_flag="-M" |
| ;; |
| |
| solaris*) |
| # |
| # Sun C uses -xM. |
| # |
| ac_lbl_dependency_flag="-xM" |
| ;; |
| |
| hpux*) |
| # |
| # HP's older C compilers don't support this. |
| # HP's newer C compilers support this with |
| # either +M or +Make; the older compilers |
| # interpret +M as something completely |
| # different, so we use +Make so we don't |
| # think it works with the older compilers. |
| # |
| ac_lbl_dependency_flag="+Make" |
| ;; |
| |
| *) |
| # |
| # Not one of the above; assume no support for |
| # generating dependencies. |
| # |
| ac_lbl_dependency_flag="" |
| ;; |
| esac |
| fi |
| |
| # |
| # Is ac_lbl_dependency_flag defined and, if so, does the compiler |
| # complain about it? |
| # |
| # Note: clang doesn't seem to exit with an error status when handed |
| # an unknown non-warning error, even if you pass it |
| # -Werror=unknown-warning-option. However, it always supports |
| # -M, so the fact that this test always succeeds with clang |
| # isn't an issue. |
| # |
| if test ! -z "$ac_lbl_dependency_flag"; then |
| AC_LANG_CONFTEST( |
| [AC_LANG_SOURCE([[int main(void) { return 0; }]])]) |
| if AC_RUN_LOG([eval "$CC $ac_lbl_dependency_flag conftest.c >/dev/null 2>&1"]); then |
| AC_MSG_RESULT([yes, with $ac_lbl_dependency_flag]) |
| DEPENDENCY_CFLAG="$ac_lbl_dependency_flag" |
| MKDEP='${top_srcdir}/mkdep' |
| else |
| AC_MSG_RESULT([no]) |
| # |
| # We can't run mkdep, so have "make depend" do |
| # nothing. |
| # |
| MKDEP=: |
| fi |
| rm -rf conftest* |
| else |
| AC_MSG_RESULT([no]) |
| # |
| # We can't run mkdep, so have "make depend" do |
| # nothing. |
| # |
| MKDEP=: |
| fi |
| AC_SUBST(DEPENDENCY_CFLAG) |
| AC_SUBST(MKDEP) |
| ]) |
| |
| # |
| # Try compiling a sample of the type of code that appears in |
| # gencode.c with "inline", "__inline__", and "__inline". |
| # |
| # Autoconf's AC_C_INLINE, at least in autoconf 2.13, isn't good enough, |
| # as it just tests whether a function returning "int" can be inlined; |
| # at least some versions of HP's C compiler can inline that, but can't |
| # inline a function that returns a struct pointer. |
| # |
| # Make sure we use the V_CCOPT flags, because some of those might |
| # disable inlining. |
| # |
| AC_DEFUN(AC_LBL_C_INLINE, |
| [AC_MSG_CHECKING(for inline) |
| save_CFLAGS="$CFLAGS" |
| CFLAGS="$V_CCOPT" |
| AC_CACHE_VAL(ac_cv_lbl_inline, [ |
| ac_cv_lbl_inline="" |
| ac_lbl_cc_inline=no |
| for ac_lbl_inline in inline __inline__ __inline |
| do |
| AC_TRY_COMPILE( |
| [#define inline $ac_lbl_inline |
| static inline struct iltest *foo(void); |
| struct iltest { |
| int iltest1; |
| int iltest2; |
| }; |
| |
| static inline struct iltest * |
| foo() |
| { |
| static struct iltest xxx; |
| |
| return &xxx; |
| }],,ac_lbl_cc_inline=yes,) |
| if test "$ac_lbl_cc_inline" = yes ; then |
| break; |
| fi |
| done |
| if test "$ac_lbl_cc_inline" = yes ; then |
| ac_cv_lbl_inline=$ac_lbl_inline |
| fi]) |
| CFLAGS="$save_CFLAGS" |
| if test ! -z "$ac_cv_lbl_inline" ; then |
| AC_MSG_RESULT($ac_cv_lbl_inline) |
| else |
| AC_MSG_RESULT(no) |
| fi |
| AC_DEFINE_UNQUOTED(inline, $ac_cv_lbl_inline, [Define as token for inline if inlining supported])]) |
| |
| dnl |
| dnl Use pfopen.c if available and pfopen() not in standard libraries |
| dnl Require libpcap |
| dnl Look for libpcap in directories under ..; those are local versions. |
| dnl Look for an installed libpcap if there is no local version or if |
| dnl the user said not to look for a local version. |
| dnl |
| dnl usage: |
| dnl |
| dnl AC_LBL_LIBPCAP(pcapdep, incls) |
| dnl |
| dnl results: |
| dnl |
| dnl $1 (pcapdep set) |
| dnl $2 (incls appended) |
| dnl LIBS |
| dnl LBL_LIBS |
| dnl |
| AC_DEFUN(AC_LBL_LIBPCAP, |
| [AC_REQUIRE([AC_LBL_LIBRARY_NET]) |
| dnl |
| dnl save a copy before locating libpcap.a |
| dnl |
| LBL_LIBS="$LIBS" |
| pfopen=/usr/examples/packetfilter/pfopen.c |
| if test -f $pfopen ; then |
| AC_CHECK_FUNCS(pfopen) |
| if test $ac_cv_func_pfopen = "no" ; then |
| AC_MSG_RESULT(Using $pfopen) |
| LIBS="$LIBS $pfopen" |
| fi |
| fi |
| libpcap=FAIL |
| AC_MSG_CHECKING([whether to look for a local libpcap]) |
| AC_ARG_ENABLE(local-libpcap, |
| AS_HELP_STRING([--disable-local-libpcap], |
| [don't look for a local libpcap @<:@default=check for a local libpcap@:>@]),, |
| enableval=yes) |
| case "$enableval" in |
| |
| no) |
| AC_MSG_RESULT(no) |
| # |
| # Don't look for a local libpcap. |
| # |
| using_local_libpcap=no |
| ;; |
| |
| *) |
| AC_MSG_RESULT(yes) |
| # |
| # Look for a local pcap library. |
| # |
| AC_MSG_CHECKING(for local pcap library) |
| lastdir=FAIL |
| places=`ls $srcdir/.. | sed -e 's,/$,,' -e "s,^,$srcdir/../," | \ |
| egrep '/libpcap-[[0-9]]+\.[[0-9]]+(\.[[0-9]]*)?([[ab]][[0-9]]*|-PRE-GIT|rc.)?$'` |
| places2=`ls .. | sed -e 's,/$,,' -e "s,^,../," | \ |
| egrep '/libpcap-[[0-9]]+\.[[0-9]]+(\.[[0-9]]*)?([[ab]][[0-9]]*|-PRE-GIT|rc.)?$'` |
| for dir in $places $srcdir/../libpcap ../libpcap $srcdir/libpcap $places2 ; do |
| basedir=`echo $dir | sed -e 's/[[ab]][[0-9]]*$//' | \ |
| sed -e 's/-PRE-GIT$//' ` |
| if test $lastdir = $basedir ; then |
| dnl skip alphas when an actual release is present |
| continue; |
| fi |
| lastdir=$dir |
| if test -r $dir/libpcap.a ; then |
| libpcap=$dir/libpcap.a |
| local_pcap_dir=$dir |
| dnl continue and select the last one that exists |
| fi |
| done |
| if test $libpcap = FAIL ; then |
| # |
| # We didn't find a local libpcap. |
| # |
| AC_MSG_RESULT(not found) |
| using_local_libpcap=no; |
| else |
| # |
| # We found a local libpcap. |
| # |
| AC_MSG_RESULT($libpcap) |
| using_local_libpcap=yes |
| fi |
| ;; |
| esac |
| |
| if test $using_local_libpcap = no ; then |
| # |
| # We didn't find a local libpcap. |
| # Look for an installed pkg-config. |
| # |
| AC_PATH_TOOL(PKG_CONFIG, pkg-config) |
| if test -n "$PKG_CONFIG" ; then |
| # |
| # We have it. Are there .pc files for libpcap? |
| # |
| # --exists was introduced in pkg-config 0.4.0; that |
| # dates back to late 2000, so we won't worry about |
| # earlier releases that lack it. |
| # |
| AC_MSG_CHECKING(whether there are .pc files for libpcap) |
| if "$PKG_CONFIG" libpcap --exists ; then |
| # |
| # Yes, so we can use pkg-config to get configuration |
| # information for libpcap. |
| # |
| AC_MSG_RESULT(yes) |
| pkg_config_usable=yes |
| else |
| # |
| # No, so we can't use pkg-config to get configuration |
| # information for libpcap. |
| # |
| AC_MSG_RESULT(no) |
| pkg_config_usable=no |
| fi |
| else |
| # |
| # We don't have it, so we obviously can't use it. |
| # |
| pkg_config_usable=no |
| fi |
| if test "$pkg_config_usable" = "yes" ; then |
| # |
| # Found both - use pkg-config to get the include flags for |
| # libpcap and the flags to link with libpcap. |
| # |
| # Please read section 11.6 "Shell Substitutions" |
| # in the autoconf manual before doing anything |
| # to this that involves quoting. Especially note |
| # the statement "There is just no portable way to use |
| # double-quoted strings inside double-quoted back-quoted |
| # expressions (pfew!)." |
| # |
| cflags=`"$PKG_CONFIG" libpcap --cflags` |
| $2="$cflags $$2" |
| libpcap=`"$PKG_CONFIG" libpcap --libs` |
| else |
| # |
| # No pkg-config |
| # Look for an installed pcap-config. |
| # |
| AC_PATH_TOOL(PCAP_CONFIG, pcap-config) |
| if test -n "$PCAP_CONFIG" ; then |
| # |
| # Found - use it to get the include flags for |
| # libpcap and the flags to link with libpcap. |
| # |
| # Please read section 11.6 "Shell Substitutions" |
| # in the autoconf manual before doing anything |
| # to this that involves quoting. Especially note |
| # the statement "There is just no portable way to use |
| # double-quoted strings inside double-quoted back-quoted |
| # expressions (pfew!)." |
| # |
| cflags=`"$PCAP_CONFIG" --cflags` |
| $2="$cflags $$2" |
| libpcap=`"$PCAP_CONFIG" --libs` |
| else |
| # |
| # Not found; look for an installed pcap. |
| # |
| AC_CHECK_LIB(pcap, main, libpcap="-lpcap") |
| if test $libpcap = FAIL ; then |
| AC_MSG_ERROR(see the INSTALL doc for more info) |
| fi |
| dnl |
| dnl Some versions of Red Hat Linux put "pcap.h" in |
| dnl "/usr/include/pcap"; had the LBL folks done so, |
| dnl that would have been a good idea, but for |
| dnl the Red Hat folks to do so just breaks source |
| dnl compatibility with other systems. |
| dnl |
| dnl We work around this by assuming that, as we didn't |
| dnl find a local libpcap, libpcap is in /usr/lib or |
| dnl /usr/local/lib and that the corresponding header |
| dnl file is under one of those directories; if we don't |
| dnl find it in either of those directories, we check to |
| dnl see if it's in a "pcap" subdirectory of them and, |
| dnl if so, add that subdirectory to the "-I" list. |
| dnl |
| dnl (We now also put pcap.h in /usr/include/pcap, but we |
| dnl leave behind a /usr/include/pcap.h that includes it, |
| dnl so you can still just include <pcap.h>.) |
| dnl |
| AC_MSG_CHECKING(for extraneous pcap header directories) |
| if test \( ! -r /usr/local/include/pcap.h \) -a \ |
| \( ! -r /usr/include/pcap.h \); then |
| if test -r /usr/local/include/pcap/pcap.h; then |
| d="/usr/local/include/pcap" |
| elif test -r /usr/include/pcap/pcap.h; then |
| d="/usr/include/pcap" |
| fi |
| fi |
| if test -z "$d" ; then |
| AC_MSG_RESULT(not found) |
| else |
| $2="-I$d $$2" |
| AC_MSG_RESULT(found -- -I$d added) |
| fi |
| fi |
| fi |
| else |
| # |
| # We found a local libpcap. Add it to the dependencies for |
| # tcpdump. |
| # |
| $1=$libpcap |
| |
| # |
| # Look for its pcap-config script. |
| # |
| AC_PATH_PROG(PCAP_CONFIG, pcap-config,, $local_pcap_dir) |
| |
| if test -n "$PCAP_CONFIG"; then |
| # |
| # We don't want its --cflags or --libs output, because |
| # those presume it's installed. For the C compiler flags, |
| # we add the source directory for the local libpcap, so |
| # we pick up its header files. |
| # |
| # We do, however, want its additional libraries, as required |
| # when linking statically, because it makes calls to |
| # routines in those libraries, so we'll need to link with |
| # them, because we'll be linking statically with it. |
| # |
| $2="-I$local_pcap_dir $$2" |
| additional_libs=`"$PCAP_CONFIG" --static --additional-libs` |
| libpcap="$libpcap $additional_libs" |
| else |
| # |
| # It doesn't have a pcap-config script. |
| # Make sure it has a pcap.h file. |
| # |
| places=`ls $srcdir/.. | sed -e 's,/$,,' -e "s,^,$srcdir/../," | \ |
| egrep '/libpcap-[[0-9]]*.[[0-9]]*(.[[0-9]]*)?([[ab]][[0-9]]*)?$'` |
| places2=`ls .. | sed -e 's,/$,,' -e "s,^,../," | \ |
| egrep '/libpcap-[[0-9]]*.[[0-9]]*(.[[0-9]]*)?([[ab]][[0-9]]*)?$'` |
| pcapH=FAIL |
| if test -r $local_pcap_dir/pcap.h; then |
| pcapH=$local_pcap_dir |
| else |
| for dir in $places $srcdir/../libpcap ../libpcap $srcdir/libpcap $places2 ; do |
| if test -r $dir/pcap.h ; then |
| pcapH=$dir |
| fi |
| done |
| fi |
| |
| if test $pcapH = FAIL ; then |
| AC_MSG_ERROR(cannot find pcap.h: see INSTALL) |
| fi |
| |
| # |
| # Force the compiler to look for header files in the |
| # directory containing pcap.h. |
| # |
| $2="-I$pcapH $$2" |
| fi |
| fi |
| |
| if test -z "$PKG_CONFIG" -a -z "$PCAP_CONFIG"; then |
| # |
| # We don't have pkg-config or pcap-config; find out any additional |
| # link flags we need. (If we have pkg-config or pcap-config, we |
| # assume it tells us what we need.) |
| # |
| case "$host_os" in |
| |
| aix*) |
| # |
| # If libpcap is DLPI-based, we have to use /lib/pse.exp if |
| # present, as we use the STREAMS routines. |
| # |
| # (XXX - true only if we're linking with a static libpcap?) |
| # |
| pseexe="/lib/pse.exp" |
| AC_MSG_CHECKING(for $pseexe) |
| if test -f $pseexe ; then |
| AC_MSG_RESULT(yes) |
| LIBS="$LIBS -I:$pseexe" |
| fi |
| |
| # |
| # If libpcap is BPF-based, we need "-lodm" and "-lcfg", as |
| # we use them to load the BPF module. |
| # |
| # (XXX - true only if we're linking with a static libpcap?) |
| # |
| LIBS="$LIBS -lodm -lcfg" |
| ;; |
| |
| solaris*) |
| # libdlpi is needed for Solaris 11 and later. |
| AC_CHECK_LIB(dlpi, dlpi_walk, LIBS="$LIBS -ldlpi" LDFLAGS="-L/lib $LDFLAGS", ,-L/lib) |
| ;; |
| esac |
| fi |
| |
| LIBS="$libpcap $LIBS" |
| |
| dnl |
| dnl Check for "pcap_loop()", to make sure we found a working |
| dnl libpcap and have all the right other libraries with which |
| dnl to link. (Otherwise, the checks below will fail, not |
| dnl because the routines are missing from the library, but |
| dnl because we aren't linking properly with libpcap, and |
| dnl that will cause confusing errors at build time.) |
| dnl |
| AC_CHECK_FUNC(pcap_loop,, |
| [ |
| AC_MSG_ERROR( |
| [This is a bug, please follow the guidelines in CONTRIBUTING and include the |
| config.log file in your report. If you have downloaded libpcap from |
| tcpdump.org, and built it yourself, please also include the config.log |
| file from the libpcap source directory, the Makefile from the libpcap |
| source directory, and the output of the make process for libpcap, as |
| this could be a problem with the libpcap that was built, and we will |
| not be able to determine why this is happening, and thus will not be |
| able to fix it, without that information, as we have not been able to |
| reproduce this problem ourselves.]) |
| ]) |
| ]) |
| |
| dnl |
| dnl If using gcc, make sure we have ANSI ioctl definitions |
| dnl |
| dnl usage: |
| dnl |
| dnl AC_LBL_FIXINCLUDES |
| dnl |
| 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( |
| [/* |
| * This generates a "duplicate case value" when fixincludes |
| * has not be run. |
| */ |
| # include <sys/types.h> |
| # include <sys/time.h> |
| # include <sys/ioctl.h> |
| # ifdef HAVE_SYS_IOCCOM_H |
| # include <sys/ioccom.h> |
| # endif], |
| [switch (0) { |
| case _IO('A', 1):; |
| case _IO('B', 1):; |
| }], |
| 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) |
| fi |
| 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,[type for wait]) |
| else |
| AC_DEFINE(DECLWAITSTATUS,int,[type for wait]) |
| 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 -r 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 |
| #include <stdio.h> |
| #include <sys/types.h> |
| |
| main() |
| { |
| uint64_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", [define if the platform doesn't define PRId64]) |
| AC_DEFINE(PRIo64, "$1o", [define if the platform doesn't define PRIo64]) |
| AC_DEFINE(PRIx64, "$1x", [define if the platform doesn't define PRIu64]) |
| AC_DEFINE(PRIu64, "$1u", [define if the platform doesn't define PRIx64]) |
| AC_MSG_RESULT(yes) |
| ], |
| [ |
| AC_MSG_RESULT(no) |
| $2 |
| ]) |
| ]) |
| |
| dnl |
| dnl If the file .devel exists: |
| dnl Add some warning flags if the compiler supports them |
| 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 ${LBL_CFLAGS}" |
| fi |
| if test -f .devel ; then |
| # |
| # Skip all the warning option stuff on some compilers. |
| # |
| if test "$ac_lbl_cc_dont_try_gcc_dashW" != yes; then |
| AC_LBL_CHECK_UNKNOWN_WARNING_OPTION_ERROR() |
| AC_LBL_CHECK_COMPILER_OPT($1, -W) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wall) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wassign-enum) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wcast-qual) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wmissing-prototypes) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wmissing-variable-declarations) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wold-style-definition) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wpedantic) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wpointer-arith) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wpointer-sign) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wshadow) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wsign-compare) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wstrict-prototypes) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wunreachable-code-return) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wused-but-marked-unused) |
| AC_LBL_CHECK_COMPILER_OPT($1, -Wwrite-strings) |
| fi |
| AC_LBL_CHECK_DEPENDENCY_GENERATION_OPT() |
| # |
| # We used to set -n32 for IRIX 6 when not using GCC (presumed |
| # to mean that we're using MIPS C or MIPSpro C); it specified |
| # the "new" faster 32-bit ABI, introduced in IRIX 6.2. I'm |
| # not sure why that would be something to do *only* with a |
| # .devel file; why should the ABI for which we produce code |
| # depend on .devel? |
| # |
| 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, 1, |
| [if there's an os_proto.h for this platform, to use additional prototypes]) |
| 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 separate 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 independently potentially results in unfortunate ordering |
| dnl dependencies -- 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. |
| |
| AC_DEFUN(AC_LBL_SSLEAY, |
| [ |
| # |
| # Find the last component of $libdir; it's not necessarily |
| # "lib" - it might be "lib64" on, for example, x86-64 |
| # Linux systems. |
| # |
| # We assume the directory in which we're looking for |
| # libcrypto has a subdirectory with that as its name. |
| # |
| tmplib=`echo "$libdir" | sed 's,.*/,,'` |
| |
| # |
| # XXX - is there a better way to check if a given library is |
| # in a given directory than checking each of the possible |
| # shared library suffixes? |
| # |
| # Are there any other suffixes we need to look for? Do we |
| # have to worry about ".so.{version}"? |
| # |
| # Or should we just look for "libcrypto.*"? |
| # |
| if test -d "$1/$tmplib" -a \( -f "$1/$tmplib/libcrypto.a" -o \ |
| -f "$1/$tmplib/libcrypto.so" -o \ |
| -f "$1/$tmplib/libcrypto.sl" -o \ |
| -f "$1/$tmplib/libcrypto.dylib" \); then |
| ac_cv_ssleay_path="$1" |
| fi |
| |
| # |
| # Make sure we have the headers as well. |
| # |
| if test -d "$1/include/openssl" -a -f "$1/include/openssl/des.h"; then |
| incdir="-I$1/include" |
| fi |
| ]) |
