configure

   1 #! /bin/bash
   2 # This is not an autconf generated configure
   3 #
   4 INCLUDE=${1:-"$PWD/include"}
   5 : ${PKG_CONFIG:=pkg-config}
   6 : ${CC=gcc}
   7 echo "PKG_CONFIG:=${PKG_CONFIG}" >>Config
   8
   9 # Make a temp directory in build tree.
  10 TMPDIR=$(mktemp -d config.XXXXXX)
  11 trap 'status=$?; rm -rf $TMPDIR; exit $status' EXIT HUP INT QUIT TERM
  12
  13 check_atm()
  14 {
  15 cat >$TMPDIR/atmtest.c <<EOF
  16 #include <atm.h>
  17 int main(int argc, char **argv) {
  18         struct atm_qos qos;
  19         (void) text2qos("aal5,ubr:sdu=9180,rx:none",&qos,0);
  20         return 0;
  21 }
  22 EOF
  23 $CC -I$INCLUDE -o $TMPDIR/atmtest $TMPDIR/atmtest.c -latm >/dev/null 2>&1
  24 if [ $? -eq 0 ]
  25 then
  26     echo "TC_CONFIG_ATM:=y" >>Config
  27     echo yes
  28 else
  29     echo no
  30 fi
  31 rm -f $TMPDIR/atmtest.c $TMPDIR/atmtest
  32 }
  33
  34 check_xt()
  35 {
  36 #check if we have xtables from iptables >= 1.4.5.
  37 cat >$TMPDIR/ipttest.c <<EOF
  38 #include <xtables.h>
  39 #include <linux/netfilter.h>
  40 static struct xtables_globals test_globals = {
  41         .option_offset = 0,
  42         .program_name = "tc-ipt",
  43         .program_version = XTABLES_VERSION,
  44         .orig_opts = NULL,
  45         .opts = NULL,
  46         .exit_err = NULL,
  47 };
  48
  49 int main(int argc, char **argv)
  50 {
  51         xtables_init_all(&test_globals, NFPROTO_IPV4);
  52         return 0;
  53 }
  54
  55 EOF
  56
  57 if $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL $(${PKG_CONFIG} xtables --cflags --libs) -ldl >/dev/null 2>&1
  58 then
  59         echo "TC_CONFIG_XT:=y" >>Config
  60         echo "using xtables"
  61 fi
  62 rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
  63 }
  64
  65 check_xt_old()
  66 {
  67 # bail if previous XT checks has already succeded.
  68 if grep TC_CONFIG_XT Config > /dev/null
  69 then
  70         return
  71 fi
  72
  73 #check if we dont need our internal header ..
  74 cat >$TMPDIR/ipttest.c <<EOF
  75 #include <xtables.h>
  76 char *lib_dir;
  77 unsigned int global_option_offset = 0;
  78 const char *program_version = XTABLES_VERSION;
  79 const char *program_name = "tc-ipt";
  80 struct afinfo afinfo = {
  81         .libprefix      = "libxt_",
  82 };
  83
  84 void exit_error(enum exittype status, const char *msg, ...)
  85 {
  86 }
  87
  88 int main(int argc, char **argv) {
  89
  90         return 0;
  91 }
  92
  93 EOF
  94 $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL -ldl >/dev/null 2>&1
  95
  96 if [ $? -eq 0 ]
  97 then
  98         echo "TC_CONFIG_XT_OLD:=y" >>Config
  99         echo "using old xtables (no need for xt-internal.h)"
 100 fi
 101 rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
 102 }
 103
 104 check_xt_old_internal_h()
 105 {
 106 # bail if previous XT checks has already succeded.
 107 if grep TC_CONFIG_XT Config > /dev/null
 108 then
 109         return
 110 fi
 111
 112 #check if we need our own internal.h
 113 cat >$TMPDIR/ipttest.c <<EOF
 114 #include <xtables.h>
 115 #include "xt-internal.h"
 116 char *lib_dir;
 117 unsigned int global_option_offset = 0;
 118 const char *program_version = XTABLES_VERSION;
 119 const char *program_name = "tc-ipt";
 120 struct afinfo afinfo = {
 121         .libprefix      = "libxt_",
 122 };
 123
 124 void exit_error(enum exittype status, const char *msg, ...)
 125 {
 126 }
 127
 128 int main(int argc, char **argv) {
 129
 130         return 0;
 131 }
 132
 133 EOF
 134 $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL -ldl >/dev/null 2>&1
 135
 136 if [ $? -eq 0 ]
 137 then
 138         echo "using old xtables with xt-internal.h"
 139         echo "TC_CONFIG_XT_OLD_H:=y" >>Config
 140 fi
 141 rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
 142 }
 143
 144 check_ipt()
 145 {
 146         if ! grep TC_CONFIG_XT Config > /dev/null
 147         then
 148                 echo "using iptables"
 149         fi
 150 }
 151
 152 check_ipt_lib_dir()
 153 {
 154         IPT_LIB_DIR=$(${PKG_CONFIG} --variable=xtlibdir xtables)
 155         if [ -n "$IPT_LIB_DIR" ]; then
 156                 echo $IPT_LIB_DIR
 157                 echo "IPT_LIB_DIR:=$IPT_LIB_DIR" >> Config
 158                 return
 159         fi
 160
 161         for dir in /lib /usr/lib /usr/local/lib
 162         do
 163                 for file in $dir/{xtables,iptables}/lib*t_*so ; do
 164                         if [ -f $file ]; then
 165                                 echo ${file%/*}
 166                                 echo "IPT_LIB_DIR:=${file%/*}" >> Config
 167                                 return
 168                         fi
 169                 done
 170         done
 171         echo "not found!"
 172 }
 173
 174 check_setns()
 175 {
 176 cat >$TMPDIR/setnstest.c <<EOF
 177 #include <sched.h>
 178 int main(int argc, char **argv)
 179 {
 180         (void)setns(0,0);
 181         return 0;
 182 }
 183 EOF
 184 $CC -I$INCLUDE -o $TMPDIR/setnstest $TMPDIR/setnstest.c >/dev/null 2>&1
 185 if [ $? -eq 0 ]
 186 then
 187         echo "IP_CONFIG_SETNS:=y" >>Config
 188         echo "yes"
 189 else
 190         echo "no"
 191 fi
 192 rm -f $TMPDIR/setnstest.c $TMPDIR/setnstest
 193 }
 194
 195 check_ipset()
 196 {
 197 cat >$TMPDIR/ipsettest.c <<EOF
 198 #include <linux/netfilter/ipset/ip_set.h>
 199 #ifndef IP_SET_INVALID
 200 #define IPSET_DIM_MAX 3
 201 typedef unsigned short ip_set_id_t;
 202 #endif
 203 #include <linux/netfilter/xt_set.h>
 204
 205 struct xt_set_info info;
 206 #if IPSET_PROTOCOL == 6
 207 int main(void)
 208 {
 209         return IPSET_MAXNAMELEN;
 210 }
 211 #else
 212 #error unknown ipset version
 213 #endif
 214 EOF
 215
 216 if $CC -I$INCLUDE -o $TMPDIR/ipsettest $TMPDIR/ipsettest.c >/dev/null 2>&1
 217 then
 218         echo "TC_CONFIG_IPSET:=y" >>Config
 219         echo "yes"
 220 else
 221         echo "no"
 222 fi
 223 rm -f $TMPDIR/ipsettest.c $TMPDIR/ipsettest
 224 }
 225
 226 echo "# Generated config based on" $INCLUDE >Config
 227
 228 echo "TC schedulers"
 229
 230 echo -n " ATM   "
 231 check_atm
 232
 233 echo -n " IPT   "
 234 check_xt
 235 check_xt_old
 236 check_xt_old_internal_h
 237 check_ipt
 238
 239 echo -n " IPSET  "
 240 check_ipset
 241
 242 echo -n "iptables modules directory: "
 243 check_ipt_lib_dir
 244
 245 echo -n "libc has setns: "
 246 check_setns