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v1.2
m4/acinclude.m4
328 строк
10 KB
Joachim Nilsson
Add missing required defines & libs to libnet.pc.in
06 окт 2019, 08:46
06 окт 2019, 08:46
d0cbd98
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dnl $Id: acinclude.m4,v 1.3 2004/01/15 23:53:06 mike Exp $ dnl dnl Libnet specific autoconf macros dnl Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com> dnl All rights reserved. dnl dnl dnl Check for the Linux /proc filesystem dnl dnl usage: AC_LIBNET_LINUX_PROCFS dnl results: HAVE_LINUX_PROCFS dnl AC_DEFUN([AC_LIBNET_LINUX_PROCFS], [AC_MSG_CHECKING(for Linux proc filesystem) AC_CACHE_VAL(ac_cv_libnet_linux_procfs, if test "x`cat /proc/sys/kernel/ostype 2>&-`" = "xLinux" ; then ac_cv_libnet_linux_procfs=yes else ac_cv_libnet_linux_procfs=no fi) AC_MSG_RESULT($ac_cv_libnet_linux_procfs) if test $ac_cv_libnet_linux_procfs = yes ; then AC_DEFINE(HAVE_LINUX_PROCFS, 1, [Define if you have the Linux /proc filesystem.]) fi]) dnl dnl Checks to see if this linux kernel has a working PF_PACKET dnl dnl usage: dnl dnl AC_LIBNET_CHECK_PF_PACKET dnl dnl results: dnl dnl HAVE_PACKET_SOCKET (DEFINED) dnl AC_DEFUN([AC_LIBNET_CHECK_PF_PACKET], [ AC_MSG_CHECKING(for packet socket (PF_PACKET)) AC_CACHE_VAL(libnet_cv_have_packet_socket, [ cat > pf_packet-test.c << EOF #include <stdio.h> #include <errno.h> #include <stdlib.h> #include <netinet/in.h> #include <sys/socket.h> #include <features.h> /* for the glibc version number */ #if __GLIBC__ >= 2 && __GLIBC_MINOR >= 1 #include <netpacket/packet.h> #include <net/ethernet.h> /* the L2 protocols */ #else #include <asm/types.h> #include <linux/if_packet.h> #include <linux/if_ether.h> /* The L2 protocols */ #endif #ifndef SOL_PACKET #define SOL_PACKET 263 #endif /* SOL_PACKET */ int main(int argc, char **argv) { int fd; fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); if (fd == -1) { if (errno == EPERM) { /* user's UID != 0 */ printf("probably"); exit (EXIT_FAILURE); } printf("no"); exit (EXIT_FAILURE); } printf("yes"); exit (EXIT_SUCCESS); } EOF ${CC-cc} -o pf_packet-test $CFLAGS pf_packet-test.c >/dev/null 2>&1 # Oopz 4.3 BSD doesn't have this. Sorry. if test ! -x ./pf_packet-test ; then libnet_cv_have_packet_socket=choked else libnet_cv_have_packet_socket=`./pf_packet-test`; fi if test $libnet_cv_have_packet_socket = choked; then AC_MSG_RESULT(test program compile choked... assuming no) elif test $libnet_cv_have_packet_socket = yes; then AC_MSG_RESULT(yes) elif test $libnet_cv_have_packet_socket = probably; then AC_MSG_RESULT(test program got EPERM... assuming yes) elif test $libnet_cv_have_packet_socket = no; then AC_MSG_RESULT(no) fi rm -f pf_packet-test* core core.pf_packet-test ]) if test $libnet_cv_have_packet_socket = yes -o $libnet_cv_have_packet_socket = probably; then AC_DEFINE(HAVE_PACKET_SOCKET, 1, [Define if we're running on a Linux system with PF_PACKET sockets.]) fi ]) dnl dnl Looks for a previous libnet version and attempts to determine which version dnl it is. Version 0.8 was the first version that actually knew internally dnl what version it was. dnl dnl usage: dnl dnl AC_LIBNET_CHECK_LIBNET_VERSION dnl dnl results: dnl dnl dnl AC_DEFUN([AC_LIBNET_CHECK_LIBNET_VER], [ AC_CHECK_LIB(net, libnet_build_ip, AC_MSG_CHECKING(version) \ changequote(<<, >>)dnl if [[ ! -f $LIB_PREFIX/libnet.a ]] ; then changequote([, ])dnl AC_MSG_RESULT($LIB_PREFIX/libnet.a doesn't exist) AC_MSG_RESULT(previous libnet install lives elsewhere, you should probably find it) else __LIBNET_VERSION=`strings $LIB_PREFIX/libnet.a | grep "libnet version"\ | cut -f3 -d" "`;\ if test -z "$__LIBNET_VERSION"; then AC_MSG_RESULT(<0.8) else AC_MSG_RESULT($__LIBNET_VERSION) fi fi\ ) ]) dnl dnl Checks to see if this linux kernel uses ip_sum or ip_csum dnl (Pulled from queso) dnl dnl usage: dnl dnl AC_LIBNET_CHECK_IP_CSUM dnl dnl results: dnl dnl HAVE_STRUCT_IP_CSUM (DEFINED) dnl AC_DEFUN([AC_LIBNET_CHECK_IP_CSUM], [ AC_MSG_CHECKING([struct ip contains ip_csum]) AC_TRY_COMPILE([ #define __BSD_SOURCE #define _BSD_SOURCE #define _DEFAULT_SOURCE #include <sys/types.h> #include <netinet/in.h> #include <netinet/in_systm.h> #include <netinet/ip.h>], [ struct ip ip; ip.ip_csum = 0; ], [AC_MSG_RESULT(yes); AC_DEFINE(HAVE_STRUCT_IP_CSUM)], [AC_MSG_RESULT(no); ]) ]) dnl dnl Checks endianess dnl dnl usage: dnl dnl AC_LIBNET_ENDIAN_CHECK dnl dnl results: dnl dnl LIBNET_BIG_ENDIAN = 1 or dnl LIBNET_LIL_ENDIAN = 1 dnl AC_DEFUN([AC_LIBNET_ENDIAN_CHECK], [AC_C_BIGENDIAN if test $ac_cv_c_bigendian = yes ; then AC_DEFINE(LIBNET_BIG_ENDIAN, 1, [We are running on a big-endian machine.]) ENDIANESS="LIBNET_BIG_ENDIAN" PKG_CONFIG_DEFINES="$PKG_CONFIG_DEFINES -DLIBNET_BIG_ENDIAN" else AC_DEFINE(LIBNET_LIL_ENDIAN, 1, [We are running on a little-endian machine.]) ENDIANESS="LIBNET_LIL_ENDIAN" PKG_CONFIG_DEFINES="$PKG_CONFIG_DEFINES -DLIBNET_LIL_ENDIAN" 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 define([AC_LBL_CHECK_LIB], [AC_MSG_CHECKING([for $2 in -l$1]) dnl Use a cache variable name containing both the library and function name, dnl because the test really is for library $1 defining function $2, not dnl just for library $1. Separate tests with the same $1 and different $2's dnl 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 of 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): AC_CHECK_FUNC(gethostbyname, , # Some OSes (eg. Solaris) place it in libnsl: AC_LBL_CHECK_LIB(nsl, gethostbyname, , # Some strange OSes (SINIX) have it in libsocket: AC_LBL_CHECK_LIB(socket, gethostbyname, , # Unfortunately libsocket sometimes depends on libnsl. # AC_CHECK_LIB's API is essentially broken so the # following ugliness is necessary: AC_LBL_CHECK_LIB(socket, gethostbyname, LIBS="-lsocket -lnsl $LIBS", AC_CHECK_LIB(resolv, gethostbyname), -lnsl)))) AC_CHECK_FUNC(socket, , AC_CHECK_LIB(socket, socket, , AC_LBL_CHECK_LIB(socket, socket, LIBS="-lsocket -lnsl $LIBS", , -lnsl))) # DLPI needs putmsg under HPUX so test for -lstr while we're at it AC_CHECK_LIB(str, putmsg) ])