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