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_prog()
  11 {
  12     echo -n "$2"
  13     command -v $1 >/dev/null 2>&1 && (echo "$3:=y" >> Config; echo "yes") || (echo "no"; return 1)
  14 }
  15
  16 check_docs()
  17 {
  18     if check_prog latex " latex: " HAVE_LATEX; then
  19         check_prog pdflatex " pdflatex: " HAVE_PDFLATEX || echo " WARNING: no PDF docs can be built from LaTeX files"
  20         check_prog sgml2latex " sgml2latex: " HAVE_SGML2LATEX || echo " WARNING: no LaTeX files can be build from SGML files"
  21     else
  22         echo " WARNING: no docs can be built from LaTeX files"
  23     fi
  24
  25     check_prog sgml2html " sgml2html: " HAVE_SGML2HTML || echo " WARNING: no HTML docs can be built from SGML"
  26 }
  27
  28 check_toolchain()
  29 {
  30     : ${PKG_CONFIG:=pkg-config}
  31     : ${AR=ar}
  32     : ${CC=gcc}
  33     echo "PKG_CONFIG:=${PKG_CONFIG}" >>Config
  34     echo "AR:=${AR}" >>Config
  35     echo "CC:=${CC}" >>Config
  36 }
  37
  38 check_atm()
  39 {
  40     cat >$TMPDIR/atmtest.c <<EOF
  41 #include <atm.h>
  42 int main(int argc, char **argv) {
  43         struct atm_qos qos;
  44         (void) text2qos("aal5,ubr:sdu=9180,rx:none",&qos,0);
  45         return 0;
  46 }
  47 EOF
  48
  49     $CC -I$INCLUDE -o $TMPDIR/atmtest $TMPDIR/atmtest.c -latm >/dev/null 2>&1
  50     if [ $? -eq 0 ]
  51     then
  52         echo "TC_CONFIG_ATM:=y" >>Config
  53         echo yes
  54     else
  55         echo no
  56     fi
  57     rm -f $TMPDIR/atmtest.c $TMPDIR/atmtest
  58 }
  59
  60 check_xtables()
  61 {
  62         if ! ${PKG_CONFIG} xtables --exists
  63         then
  64                 echo "TC_CONFIG_NO_XT:=y" >>Config
  65         fi
  66 }
  67
  68 check_xt()
  69 {
  70     #check if we have xtables from iptables >= 1.4.5.
  71     cat >$TMPDIR/ipttest.c <<EOF
  72 #include <xtables.h>
  73 #include <linux/netfilter.h>
  74 static struct xtables_globals test_globals = {
  75         .option_offset = 0,
  76         .program_name = "tc-ipt",
  77         .program_version = XTABLES_VERSION,
  78         .orig_opts = NULL,
  79         .opts = NULL,
  80         .exit_err = NULL,
  81 };
  82
  83 int main(int argc, char **argv)
  84 {
  85         xtables_init_all(&test_globals, NFPROTO_IPV4);
  86         return 0;
  87 }
  88 EOF
  89
  90     if $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL \
  91         $(${PKG_CONFIG} xtables --cflags --libs) -ldl >/dev/null 2>&1
  92     then
  93         echo "TC_CONFIG_XT:=y" >>Config
  94         echo "using xtables"
  95     fi
  96     rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
  97 }
  98
  99 check_xt_old()
 100 {
 101     # bail if previous XT checks has already succeded.
 102     if grep -q TC_CONFIG_XT Config
 103     then
 104         return
 105     fi
 106
 107     #check if we dont need our internal header ..
 108     cat >$TMPDIR/ipttest.c <<EOF
 109 #include <xtables.h>
 110 char *lib_dir;
 111 unsigned int global_option_offset = 0;
 112 const char *program_version = XTABLES_VERSION;
 113 const char *program_name = "tc-ipt";
 114 struct afinfo afinfo = {
 115         .libprefix      = "libxt_",
 116 };
 117
 118 void exit_error(enum exittype status, const char *msg, ...)
 119 {
 120 }
 121
 122 int main(int argc, char **argv) {
 123
 124         return 0;
 125 }
 126
 127 EOF
 128
 129     $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL -ldl >/dev/null 2>&1
 130     if [ $? -eq 0 ]
 131     then
 132         echo "TC_CONFIG_XT_OLD:=y" >>Config
 133         echo "using old xtables (no need for xt-internal.h)"
 134     fi
 135     rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
 136 }
 137
 138 check_xt_old_internal_h()
 139 {
 140     # bail if previous XT checks has already succeded.
 141     if grep -q TC_CONFIG_XT Config
 142     then
 143         return
 144     fi
 145
 146     #check if we need our own internal.h
 147     cat >$TMPDIR/ipttest.c <<EOF
 148 #include <xtables.h>
 149 #include "xt-internal.h"
 150 char *lib_dir;
 151 unsigned int global_option_offset = 0;
 152 const char *program_version = XTABLES_VERSION;
 153 const char *program_name = "tc-ipt";
 154 struct afinfo afinfo = {
 155         .libprefix      = "libxt_",
 156 };
 157
 158 void exit_error(enum exittype status, const char *msg, ...)
 159 {
 160 }
 161
 162 int main(int argc, char **argv) {
 163
 164         return 0;
 165 }
 166
 167 EOF
 168         $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL -ldl >/dev/null 2>&1
 169
 170         if [ $? -eq 0 ]
 171         then
 172             echo "using old xtables with xt-internal.h"
 173             echo "TC_CONFIG_XT_OLD_H:=y" >>Config
 174         fi
 175         rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
 176 }
 177
 178 check_ipt()
 179 {
 180         if ! grep TC_CONFIG_XT Config > /dev/null
 181         then
 182                 echo "using iptables"
 183         fi
 184 }
 185
 186 check_ipt_lib_dir()
 187 {
 188         IPT_LIB_DIR=$(${PKG_CONFIG} --variable=xtlibdir xtables)
 189         if [ -n "$IPT_LIB_DIR" ]; then
 190                 echo $IPT_LIB_DIR
 191                 echo "IPT_LIB_DIR:=$IPT_LIB_DIR" >> Config
 192                 return
 193         fi
 194
 195         for dir in /lib /usr/lib /usr/local/lib
 196         do
 197                 for file in $dir/{xtables,iptables}/lib*t_*so ; do
 198                         if [ -f $file ]; then
 199                                 echo ${file%/*}
 200                                 echo "IPT_LIB_DIR:=${file%/*}" >> Config
 201                                 return
 202                         fi
 203                 done
 204         done
 205         echo "not found!"
 206 }
 207
 208 check_setns()
 209 {
 210     cat >$TMPDIR/setnstest.c <<EOF
 211 #include <sched.h>
 212 int main(int argc, char **argv)
 213 {
 214         (void)setns(0,0);
 215         return 0;
 216 }
 217 EOF
 218     $CC -I$INCLUDE -o $TMPDIR/setnstest $TMPDIR/setnstest.c >/dev/null 2>&1
 219     if [ $? -eq 0 ]
 220     then
 221         echo "IP_CONFIG_SETNS:=y" >>Config
 222         echo "yes"
 223     else
 224         echo "no"
 225     fi
 226     rm -f $TMPDIR/setnstest.c $TMPDIR/setnstest
 227 }
 228
 229 check_ipset()
 230 {
 231     cat >$TMPDIR/ipsettest.c <<EOF
 232 #include <linux/netfilter/ipset/ip_set.h>
 233 #ifndef IP_SET_INVALID
 234 #define IPSET_DIM_MAX 3
 235 typedef unsigned short ip_set_id_t;
 236 #endif
 237 #include <linux/netfilter/xt_set.h>
 238
 239 struct xt_set_info info;
 240 #if IPSET_PROTOCOL == 6
 241 int main(void)
 242 {
 243         return IPSET_MAXNAMELEN;
 244 }
 245 #else
 246 #error unknown ipset version
 247 #endif
 248 EOF
 249
 250     if $CC -I$INCLUDE -o $TMPDIR/ipsettest $TMPDIR/ipsettest.c >/dev/null 2>&1
 251     then
 252         echo "TC_CONFIG_IPSET:=y" >>Config
 253         echo "yes"
 254     else
 255         echo "no"
 256     fi
 257     rm -f $TMPDIR/ipsettest.c $TMPDIR/ipsettest
 258 }
 259
 260 check_elf()
 261 {
 262     cat >$TMPDIR/elftest.c <<EOF
 263 #include <libelf.h>
 264 #include <gelf.h>
 265 int main(void)
 266 {
 267         Elf_Scn *scn;
 268         GElf_Shdr shdr;
 269         return elf_version(EV_CURRENT);
 270 }
 271 EOF
 272
 273     if $CC -I$INCLUDE -o $TMPDIR/elftest $TMPDIR/elftest.c -lelf >/dev/null 2>&1
 274     then
 275         echo "HAVE_ELF:=y" >>Config
 276         echo "yes"
 277     else
 278         echo "no"
 279     fi
 280     rm -f $TMPDIR/elftest.c $TMPDIR/elftest
 281 }
 282
 283 check_selinux()
 284 # SELinux is a compile time option in the ss utility
 285 {
 286         if ${PKG_CONFIG} libselinux --exists
 287         then
 288                 echo "HAVE_SELINUX:=y" >>Config
 289                 echo "yes"
 290         else
 291                 echo "no"
 292         fi
 293 }
 294
 295 check_mnl()
 296 {
 297         if ${PKG_CONFIG} libmnl --exists
 298         then
 299                 echo "HAVE_MNL:=y" >>Config
 300                 echo "yes"
 301         else
 302                 echo "no"
 303         fi
 304 }
 305
 306 check_berkeley_db()
 307 {
 308     cat >$TMPDIR/dbtest.c <<EOF
 309 #include <fcntl.h>
 310 #include <stdlib.h>
 311 #include <db_185.h>
 312 int main(int argc, char **argv) {
 313         dbopen("/tmp/xxx_test_db.db", O_CREAT|O_RDWR, 0644, DB_HASH, NULL);
 314         return 0;
 315 }
 316 EOF
 317     $CC -I$INCLUDE -o $TMPDIR/dbtest $TMPDIR/dbtest.c -ldb >/dev/null 2>&1
 318     if [ $? -eq 0 ]
 319     then
 320         echo "HAVE_BERKELEY_DB:=y" >>Config
 321         echo "yes"
 322     else
 323         echo "no"
 324     fi
 325     rm -f $TMPDIR/dbtest.c $TMPDIR/dbtest
 326 }
 327
 328 quiet_config()
 329 {
 330         cat <<EOF
 331 # user can control verbosity similar to kernel builds (e.g., V=1)
 332 ifeq ("\$(origin V)", "command line")
 333   VERBOSE = \$(V)
 334 endif
 335 ifndef VERBOSE
 336   VERBOSE = 0
 337 endif
 338 ifeq (\$(VERBOSE),1)
 339   Q =
 340 else
 341   Q = @
 342 endif
 343
 344 ifeq (\$(VERBOSE), 0)
 345     QUIET_CC       = @echo '    CC       '\$@;
 346     QUIET_AR       = @echo '    AR       '\$@;
 347     QUIET_LINK     = @echo '    LINK     '\$@;
 348     QUIET_YACC     = @echo '    YACC     '\$@;
 349     QUIET_LEX      = @echo '    LEX      '\$@;
 350 endif
 351 EOF
 352 }
 353
 354 echo "# Generated config based on" $INCLUDE >Config
 355 quiet_config >> Config
 356
 357 check_toolchain
 358
 359 echo "TC schedulers"
 360
 361 echo -n " ATM   "
 362 check_atm
 363
 364 check_xtables
 365 if ! grep -q TC_CONFIG_NO_XT Config
 366 then
 367         echo -n " IPT   "
 368         check_xt
 369         check_xt_old
 370         check_xt_old_internal_h
 371         check_ipt
 372
 373         echo -n " IPSET  "
 374         check_ipset
 375 fi
 376
 377 echo
 378 if ! grep -q TC_CONFIG_NO_XT Config
 379 then
 380         echo -n "iptables modules directory: "
 381         check_ipt_lib_dir
 382 fi
 383
 384 echo -n "libc has setns: "
 385 check_setns
 386
 387 echo -n "SELinux support: "
 388 check_selinux
 389
 390 echo -n "ELF support: "
 391 check_elf
 392
 393 echo -n "libmnl support: "
 394 check_mnl
 395
 396 echo -n "Berkeley DB: "
 397 check_berkeley_db
 398
 399 echo
 400 echo -n "docs:"
 401 check_docs
 402 echo
 403
 404 echo >> Config
 405 echo "%.o: %.c" >> Config
 406 echo '  $(QUIET_CC)$(CC) $(CFLAGS) $(EXTRA_CFLAGS) -c -o $@ $<' >> Config