configure

   1 #! /bin/bash
   2 # This is not an autoconf 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     : ${CC=gcc}
  15     echo "PKG_CONFIG:=${PKG_CONFIG}" >>Config
  16     echo "AR:=${AR}" >>Config
  17     echo "CC:=${CC}" >>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
  31     $CC -I$INCLUDE -o $TMPDIR/atmtest $TMPDIR/atmtest.c -latm >/dev/null 2>&1
  32     if [ $? -eq 0 ]
  33     then
  34         echo "TC_CONFIG_ATM:=y" >>Config
  35         echo yes
  36     else
  37         echo no
  38     fi
  39     rm -f $TMPDIR/atmtest.c $TMPDIR/atmtest
  40 }
  41
  42 check_xt()
  43 {
  44     #check if we have xtables from iptables >= 1.4.5.
  45     cat >$TMPDIR/ipttest.c <<EOF
  46 #include <xtables.h>
  47 #include <linux/netfilter.h>
  48 static struct xtables_globals test_globals = {
  49         .option_offset = 0,
  50         .program_name = "tc-ipt",
  51         .program_version = XTABLES_VERSION,
  52         .orig_opts = NULL,
  53         .opts = NULL,
  54         .exit_err = NULL,
  55 };
  56
  57 int main(int argc, char **argv)
  58 {
  59         xtables_init_all(&test_globals, NFPROTO_IPV4);
  60         return 0;
  61 }
  62 EOF
  63
  64     if $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL \
  65         $(${PKG_CONFIG} xtables --cflags --libs) -ldl >/dev/null 2>&1
  66     then
  67         echo "TC_CONFIG_XT:=y" >>Config
  68         echo "using xtables"
  69     fi
  70     rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
  71 }
  72
  73 check_xt_old()
  74 {
  75     # bail if previous XT checks has already succeded.
  76     if grep -q TC_CONFIG_XT Config
  77     then
  78         return
  79     fi
  80
  81     #check if we dont need our internal header ..
  82     cat >$TMPDIR/ipttest.c <<EOF
  83 #include <xtables.h>
  84 char *lib_dir;
  85 unsigned int global_option_offset = 0;
  86 const char *program_version = XTABLES_VERSION;
  87 const char *program_name = "tc-ipt";
  88 struct afinfo afinfo = {
  89         .libprefix      = "libxt_",
  90 };
  91
  92 void exit_error(enum exittype status, const char *msg, ...)
  93 {
  94 }
  95
  96 int main(int argc, char **argv) {
  97
  98         return 0;
  99 }
 100
 101 EOF
 102
 103     $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL -ldl >/dev/null 2>&1
 104     if [ $? -eq 0 ]
 105     then
 106         echo "TC_CONFIG_XT_OLD:=y" >>Config
 107         echo "using old xtables (no need for xt-internal.h)"
 108     fi
 109     rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
 110 }
 111
 112 check_xt_old_internal_h()
 113 {
 114     # bail if previous XT checks has already succeded.
 115     if grep -q TC_CONFIG_XT Config
 116     then
 117         return
 118     fi
 119
 120     #check if we need our own internal.h
 121     cat >$TMPDIR/ipttest.c <<EOF
 122 #include <xtables.h>
 123 #include "xt-internal.h"
 124 char *lib_dir;
 125 unsigned int global_option_offset = 0;
 126 const char *program_version = XTABLES_VERSION;
 127 const char *program_name = "tc-ipt";
 128 struct afinfo afinfo = {
 129         .libprefix      = "libxt_",
 130 };
 131
 132 void exit_error(enum exittype status, const char *msg, ...)
 133 {
 134 }
 135
 136 int main(int argc, char **argv) {
 137
 138         return 0;
 139 }
 140
 141 EOF
 142         $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL -ldl >/dev/null 2>&1
 143
 144         if [ $? -eq 0 ]
 145         then
 146             echo "using old xtables with xt-internal.h"
 147             echo "TC_CONFIG_XT_OLD_H:=y" >>Config
 148         fi
 149         rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
 150 }
 151
 152 check_ipt()
 153 {
 154         if ! grep TC_CONFIG_XT Config > /dev/null
 155         then
 156                 echo "using iptables"
 157         fi
 158 }
 159
 160 check_ipt_lib_dir()
 161 {
 162         IPT_LIB_DIR=$(${PKG_CONFIG} --variable=xtlibdir xtables)
 163         if [ -n "$IPT_LIB_DIR" ]; then
 164                 echo $IPT_LIB_DIR
 165                 echo "IPT_LIB_DIR:=$IPT_LIB_DIR" >> Config
 166                 return
 167         fi
 168
 169         for dir in /lib /usr/lib /usr/local/lib
 170         do
 171                 for file in $dir/{xtables,iptables}/lib*t_*so ; do
 172                         if [ -f $file ]; then
 173                                 echo ${file%/*}
 174                                 echo "IPT_LIB_DIR:=${file%/*}" >> Config
 175                                 return
 176                         fi
 177                 done
 178         done
 179         echo "not found!"
 180 }
 181
 182 check_setns()
 183 {
 184     cat >$TMPDIR/setnstest.c <<EOF
 185 #include <sched.h>
 186 int main(int argc, char **argv)
 187 {
 188         (void)setns(0,0);
 189         return 0;
 190 }
 191 EOF
 192     $CC -I$INCLUDE -o $TMPDIR/setnstest $TMPDIR/setnstest.c >/dev/null 2>&1
 193     if [ $? -eq 0 ]
 194     then
 195         echo "IP_CONFIG_SETNS:=y" >>Config
 196         echo "yes"
 197     else
 198         echo "no"
 199     fi
 200     rm -f $TMPDIR/setnstest.c $TMPDIR/setnstest
 201 }
 202
 203 check_ipset()
 204 {
 205     cat >$TMPDIR/ipsettest.c <<EOF
 206 #include <linux/netfilter/ipset/ip_set.h>
 207 #ifndef IP_SET_INVALID
 208 #define IPSET_DIM_MAX 3
 209 typedef unsigned short ip_set_id_t;
 210 #endif
 211 #include <linux/netfilter/xt_set.h>
 212
 213 struct xt_set_info info;
 214 #if IPSET_PROTOCOL == 6
 215 int main(void)
 216 {
 217         return IPSET_MAXNAMELEN;
 218 }
 219 #else
 220 #error unknown ipset version
 221 #endif
 222 EOF
 223
 224     if $CC -I$INCLUDE -o $TMPDIR/ipsettest $TMPDIR/ipsettest.c >/dev/null 2>&1
 225     then
 226         echo "TC_CONFIG_IPSET:=y" >>Config
 227         echo "yes"
 228     else
 229         echo "no"
 230     fi
 231     rm -f $TMPDIR/ipsettest.c $TMPDIR/ipsettest
 232 }
 233
 234 echo "# Generated config based on" $INCLUDE >Config
 235 check_toolchain
 236
 237 echo "TC schedulers"
 238
 239 echo -n " ATM   "
 240 check_atm
 241
 242 echo -n " IPT   "
 243 check_xt
 244 check_xt_old
 245 check_xt_old_internal_h
 246 check_ipt
 247
 248 echo -n " IPSET  "
 249 check_ipset
 250
 251 echo -n "iptables modules directory: "
 252 check_ipt_lib_dir
 253
 254 echo -n "libc has setns: "
 255 check_setns