configure

   1 #! /bin/bash
   2 # This is not an autconf generated configure
   3 #
   4 INCLUDE=${1:-"$PWD/include"}
   5
   6 # Make a temp directory in build tree.
   7 TMPDIR=$(mktemp -d config.XXXXXX)
   8 trap 'status=$?; rm -rf $TMPDIR; exit $status' EXIT HUP INT QUIT TERM
   9
  10 check_toolchain()
  11 {
  12 : ${PKG_CONFIG:=pkg-config}
  13 : ${CC=gcc}
  14 echo "CC:=${CC}" >>Config
  15 echo "PKG_CONFIG:=${PKG_CONFIG}" >>Config
  16 }
  17
  18 check_atm()
  19 {
  20 cat >$TMPDIR/atmtest.c <<EOF
  21 #include <atm.h>
  22 int main(int argc, char **argv) {
  23         struct atm_qos qos;
  24         (void) text2qos("aal5,ubr:sdu=9180,rx:none",&qos,0);
  25         return 0;
  26 }
  27 EOF
  28 $CC -I$INCLUDE -o $TMPDIR/atmtest $TMPDIR/atmtest.c -latm >/dev/null 2>&1
  29 if [ $? -eq 0 ]
  30 then
  31     echo "TC_CONFIG_ATM:=y" >>Config
  32     echo yes
  33 else
  34     echo no
  35 fi
  36 rm -f $TMPDIR/atmtest.c $TMPDIR/atmtest
  37 }
  38
  39 check_xt()
  40 {
  41 #check if we have xtables from iptables >= 1.4.5.
  42 cat >$TMPDIR/ipttest.c <<EOF
  43 #include <xtables.h>
  44 #include <linux/netfilter.h>
  45 static struct xtables_globals test_globals = {
  46         .option_offset = 0,
  47         .program_name = "tc-ipt",
  48         .program_version = XTABLES_VERSION,
  49         .orig_opts = NULL,
  50         .opts = NULL,
  51         .exit_err = NULL,
  52 };
  53
  54 int main(int argc, char **argv)
  55 {
  56         xtables_init_all(&test_globals, NFPROTO_IPV4);
  57         return 0;
  58 }
  59
  60 EOF
  61
  62 if $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL $(${PKG_CONFIG} xtables --cflags --libs) -ldl >/dev/null 2>&1
  63 then
  64         echo "TC_CONFIG_XT:=y" >>Config
  65         echo "using xtables"
  66 fi
  67 rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
  68 }
  69
  70 check_xt_old()
  71 {
  72 # bail if previous XT checks has already succeded.
  73 if grep TC_CONFIG_XT Config > /dev/null
  74 then
  75         return
  76 fi
  77
  78 #check if we dont need our internal header ..
  79 cat >$TMPDIR/ipttest.c <<EOF
  80 #include <xtables.h>
  81 char *lib_dir;
  82 unsigned int global_option_offset = 0;
  83 const char *program_version = XTABLES_VERSION;
  84 const char *program_name = "tc-ipt";
  85 struct afinfo afinfo = {
  86         .libprefix      = "libxt_",
  87 };
  88
  89 void exit_error(enum exittype status, const char *msg, ...)
  90 {
  91 }
  92
  93 int main(int argc, char **argv) {
  94
  95         return 0;
  96 }
  97
  98 EOF
  99 $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL -ldl >/dev/null 2>&1
 100
 101 if [ $? -eq 0 ]
 102 then
 103         echo "TC_CONFIG_XT_OLD:=y" >>Config
 104         echo "using old xtables (no need for xt-internal.h)"
 105 fi
 106 rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
 107 }
 108
 109 check_xt_old_internal_h()
 110 {
 111 # bail if previous XT checks has already succeded.
 112 if grep TC_CONFIG_XT Config > /dev/null
 113 then
 114         return
 115 fi
 116
 117 #check if we need our own internal.h
 118 cat >$TMPDIR/ipttest.c <<EOF
 119 #include <xtables.h>
 120 #include "xt-internal.h"
 121 char *lib_dir;
 122 unsigned int global_option_offset = 0;
 123 const char *program_version = XTABLES_VERSION;
 124 const char *program_name = "tc-ipt";
 125 struct afinfo afinfo = {
 126         .libprefix      = "libxt_",
 127 };
 128
 129 void exit_error(enum exittype status, const char *msg, ...)
 130 {
 131 }
 132
 133 int main(int argc, char **argv) {
 134
 135         return 0;
 136 }
 137
 138 EOF
 139 $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL -ldl >/dev/null 2>&1
 140
 141 if [ $? -eq 0 ]
 142 then
 143         echo "using old xtables with xt-internal.h"
 144         echo "TC_CONFIG_XT_OLD_H:=y" >>Config
 145 fi
 146 rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
 147 }
 148
 149 check_ipt()
 150 {
 151         if ! grep TC_CONFIG_XT Config > /dev/null
 152         then
 153                 echo "using iptables"
 154         fi
 155 }
 156
 157 check_ipt_lib_dir()
 158 {
 159         IPT_LIB_DIR=$(${PKG_CONFIG} --variable=xtlibdir xtables)
 160         if [ -n "$IPT_LIB_DIR" ]; then
 161                 echo $IPT_LIB_DIR
 162                 echo "IPT_LIB_DIR:=$IPT_LIB_DIR" >> Config
 163                 return
 164         fi
 165
 166         for dir in /lib /usr/lib /usr/local/lib
 167         do
 168                 for file in $dir/{xtables,iptables}/lib*t_*so ; do
 169                         if [ -f $file ]; then
 170                                 echo ${file%/*}
 171                                 echo "IPT_LIB_DIR:=${file%/*}" >> Config
 172                                 return
 173                         fi
 174                 done
 175         done
 176         echo "not found!"
 177 }
 178
 179 check_setns()
 180 {
 181 cat >$TMPDIR/setnstest.c <<EOF
 182 #include <sched.h>
 183 int main(int argc, char **argv)
 184 {
 185         (void)setns(0,0);
 186         return 0;
 187 }
 188 EOF
 189 $CC -I$INCLUDE -o $TMPDIR/setnstest $TMPDIR/setnstest.c >/dev/null 2>&1
 190 if [ $? -eq 0 ]
 191 then
 192         echo "IP_CONFIG_SETNS:=y" >>Config
 193         echo "yes"
 194 else
 195         echo "no"
 196 fi
 197 rm -f $TMPDIR/setnstest.c $TMPDIR/setnstest
 198 }
 199
 200 check_ipset()
 201 {
 202 cat >$TMPDIR/ipsettest.c <<EOF
 203 #include <linux/netfilter/ipset/ip_set.h>
 204 #ifndef IP_SET_INVALID
 205 #define IPSET_DIM_MAX 3
 206 typedef unsigned short ip_set_id_t;
 207 #endif
 208 #include <linux/netfilter/xt_set.h>
 209
 210 struct xt_set_info info;
 211 #if IPSET_PROTOCOL == 6
 212 int main(void)
 213 {
 214         return IPSET_MAXNAMELEN;
 215 }
 216 #else
 217 #error unknown ipset version
 218 #endif
 219 EOF
 220
 221 if $CC -I$INCLUDE -o $TMPDIR/ipsettest $TMPDIR/ipsettest.c >/dev/null 2>&1
 222 then
 223         echo "TC_CONFIG_IPSET:=y" >>Config
 224         echo "yes"
 225 else
 226         echo "no"
 227 fi
 228 rm -f $TMPDIR/ipsettest.c $TMPDIR/ipsettest
 229 }
 230
 231 echo "# Generated config based on" $INCLUDE >Config
 232 check_toolchain
 233
 234 echo "TC schedulers"
 235
 236 echo -n " ATM   "
 237 check_atm
 238
 239 echo -n " IPT   "
 240 check_xt
 241 check_xt_old
 242 check_xt_old_internal_h
 243 check_ipt
 244
 245 echo -n " IPSET  "
 246 check_ipset
 247
 248 echo -n "iptables modules directory: "
 249 check_ipt_lib_dir
 250
 251 echo -n "libc has setns: "
 252 check_setns