configure

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