configure.ac

   1 dnl $Id: configure.ac 3516 2007-06-10 16:14:03Z jilles $
   2 dnl Process this file with autoconf to produce a configure script.
   3
   4 dnl TODO: clean up all the OpenSSL and shared module checking stuff;
   5 dnl the most major changes have already been made and it looks like
   6 dnl said functions need to be just about as complex as they already are.
   7
   8 AC_PREREQ(2.57)
   9
  10 dnl Sneaky way to get an Id tag into the configure script
  11 AC_COPYRIGHT([$Id: configure.ac 3516 2007-06-10 16:14:03Z jilles $])
  12
  13 AC_INIT([shadowircd],[6.3.2.1])
  14
  15 AC_CONFIG_HEADER(include/setup.h)
  16
  17 AC_PREFIX_DEFAULT($HOME/ircd)
  18
  19 AC_GNU_SOURCE
  20
  21 OLD_CFLAGS="$CFLAGS"
  22 dnl Checks for programs.
  23 AC_PROG_CC
  24 AC_LANG(C)
  25
  26 dnl Make sure autoconf doesn't interfere with cflags -jmallett
  27 CFLAGS="$OLD_CFLAGS"
  28
  29 AC_CONFIG_SUBDIRS(libratbox)
  30
  31 dnl Check for various compilers. -jmallett
  32 dnl But if $CC turns out to be gcc, sure as hell it's, well, gcc. -joshk
  33
  34 if test "$ac_cv_c_compiler_gnu" != yes; then
  35
  36 SGS=no
  37 AC_MSG_CHECKING($CC -version for TenDRA or MIPSpro)
  38 case `$CC -version 2>&1` in
  39 *TenDRA*)
  40         AC_MSG_RESULT([yes, TenDRA])
  41         IRC_CFLAGS=""
  42         CPPFLAGS="$CPPFLAGS -Ylonglong -Yansi -I/usr/include"
  43         SGS=yes
  44         TenDRA=yes
  45 ;;
  46 *MIPSpro*)
  47         AC_MSG_RESULT([yes, MIPSpro])
  48         MIPSpro=yes
  49         SGS=yes
  50 ;;
  51 *)
  52         AC_MSG_RESULT(no)
  53         TenDRA=no
  54         MIPSpro=no
  55 ;;
  56 esac
  57
  58 AC_MSG_CHECKING([$CC -V for Sun Workshop, Forte, HPUX or Tru64 cc])
  59 case `$CC -V 2>&1` in
  60 *Sun*WorkShop* | *Forte*Developer*)
  61         AC_MSG_RESULT(Sun Workshop/Forte)
  62         IRC_CFLAGS="-fast -xinline=dlinkAdd,dlinkAddBefore,dlinkAddTail,dlinkDelete,dlink_list_length,dlink_node,dlinkMoveList,_MyMalloc,_MyRealloc,_MyFree,_DupString"
  63         SunWorkShop=yes
  64         SGS=yes
  65 ;;
  66 *Tru64*)
  67         AC_MSG_RESULT(Tru64 cc)
  68         IRC_CFLAGS="-O2"
  69         CPPFLAGS="-I/usr/local/include"
  70         Tru=yes
  71 ;;
  72 *HP*ANSI*)
  73         AC_MSG_RESULT(HPUX cc)
  74         HPUX=yes
  75         IRC_CFLAGS="+e"
  76 ;;
  77 *)
  78         AC_MSG_RESULT(no)
  79 ;;
  80 esac
  81
  82 fi
  83
  84 AC_MSG_CHECKING([uname -s for Solaris, AIX or HPUX])
  85 OSNAME=`uname -s`
  86 case "$OSNAME" in
  87         HP-UX*)
  88         dnl only do this if we haven't already detected the newer one
  89         dnl and we're not already using gcc
  90
  91                 if test "$HPUX" != yes -a "$ac_cv_c_compiler_gnu" = no; then
  92                         AC_MSG_RESULT(assuming old HPUX with its own cc)
  93                         IRC_CFLAGS="$IRC_CFLAGS +e"
  94                         HPUX=yes
  95                 else
  96                         AC_MSG_RESULT(already using newer HPUX)
  97                 fi
  98         ;;
  99         SunOS*)
 100                 AC_MSG_RESULT(SunOS or Solaris)
 101                 AC_DEFINE(__EXTENSIONS__, 1, [This is needed to use strtok_r on Solaris.])
 102                 SUN=yes
 103         ;;
 104         AIX*)
 105                 AC_MSG_RESULT(AIX - Sorry you poor bastard..really we are)
 106                 IRC_CFLAGS="$IRC_CFLAGS -Wl,-brtl -Wl,-G"
 107         ;;
 108         *)
 109                 AC_MSG_RESULT(no)
 110         ;;
 111 esac
 112
 113 if test "$ac_cv_c_compiler_gnu" = yes; then
 114         AC_MSG_CHECKING(if $CC is Apple GCC)
 115
 116         case `$CC -v 2>&1 | tail -n 1` in
 117         *Apple*)
 118                 AC_MSG_RESULT(yes)
 119                 AppleGCC=yes
 120         ;;
 121         *)
 122                 AC_MSG_RESULT(no)
 123                 AppleGCC=no
 124         ;;
 125         esac
 126
 127         IRC_CFLAGS="$IRC_CFLAGS -O0 -Wall -std=gnu99"
 128 fi
 129
 130 dnl If we support -g, use it!
 131 if test "$ac_cv_prog_cc_g" = yes; then
 132         dnl Tru64 needs -g3 for -O2
 133         if test "$Tru" = yes; then
 134                 IRC_CFLAGS="$IRC_CFLAGS -g3"
 135         else
 136                 IRC_CFLAGS="$IRC_CFLAGS -g"
 137         fi
 138 fi
 139
 140 dnl SVR4 SGS based on what we know about the compiler -jmallett
 141 AC_MSG_CHECKING(if $CC supports the SVR4 SGS interfaces)
 142 if test "$SGS" = "yes"; then
 143         AC_MSG_RESULT(yes)
 144 else
 145         AC_MSG_RESULT(no)
 146 fi
 147
 148 dnl We prefer gcc -MM because it's a lot less bloated
 149 AC_PATH_PROG(MKDEP, mkdep)
 150 AC_PATH_PROG(MAKEDEPEND, makedepend)
 151
 152 AC_MSG_CHECKING(how to generate dependency info)
 153
 154 STDOUT="> .depend"
 155
 156 if test "$ac_cv_c_compiler_gnu" = yes; then
 157         AC_MSG_RESULT(gcc -MM)
 158         MKDEP="$CC -MM"
 159 elif test ! -z "$MKDEP"; then
 160         AC_MSG_RESULT(mkdep)
 161
 162         dnl Tru64's mkdep is very loud
 163         if test -z "$Tru"; then
 164                 STDOUT=""
 165         else
 166                 STDOUT=" 2> /dev/null"
 167         fi
 168 elif test "$SunWorkShop" = yes; then
 169         AC_MSG_RESULT($CC -xM)
 170         MKDEP="$CC -xM"
 171         STDOUT="> .depend 2> /dev/null"
 172 elif test ! -z "$MAKEDEPEND"; then
 173         AC_MSG_RESULT(makedepend)
 174         MKDEP="$MAKEDEPEND -f-"
 175 else
 176         AC_MSG_RESULT([nothing suitable.. forget it!])
 177         MKDEP=":"
 178 fi
 179
 180 AC_SUBST(MKDEP)
 181 AC_SUBST(STDOUT)
 182
 183 dnl check for /dev/null so we can use it to hold evil fd's
 184 AC_MSG_CHECKING([for /dev/null])
 185 if test -c /dev/null ; then
 186         AC_DEFINE(PATH_DEVNULL, "/dev/null", [Path to /dev/null])
 187         AC_MSG_RESULT(yes)
 188 else
 189         AC_DEFINE(PATH_DEVNULL, "devnull.log", [Path to /dev/null])
 190         AC_MSG_RESULT(no - using devnull.log)
 191 fi
 192
 193 dnl jdc -- If CFLAGS is defined, best use it everywhere...
 194 dnl NOTE: jv says it must be added to the *END*, because things like
 195 dnl "gcc -O9 -O2" will result in -O2 getting preference.  How stupid.
 196 if test ! -z "$CFLAGS"; then
 197         IRC_CFLAGS="$IRC_CFLAGS $CFLAGS"
 198 fi
 199
 200 AC_ISC_POSIX
 201 AC_C_INLINE
 202 AC_PROG_GCC_TRADITIONAL
 203 AC_PROG_MAKE_SET
 204 AC_PROG_INSTALL
 205 AC_PATH_PROG(RM, rm)
 206 AC_PATH_PROG(CP, cp)
 207 AC_PATH_PROG(MV, mv)
 208 AC_PATH_PROG(LN, ln)
 209 AC_PATH_PROG(SED, sed)
 210 AC_PATH_PROG(AR, ar)
 211 AC_PATH_PROG(LD, ld)
 212 AC_PATH_PROG(RANLIB, ranlib)
 213 AC_PATH_PROG(TOUCH, touch)
 214
 215 AC_PROG_YACC
 216
 217 dnl AC_PROG_YACC defaults to yacc unconditionally if nothing can be found
 218 if test "$YACC" = "yacc" -a -z "`which $YACC 2>/dev/null`"; then
 219         AC_MSG_ERROR([could not locate a suitable parser generator; install bison, yacc, or byacc])
 220 fi
 221
 222 AC_PROG_LEX
 223
 224 if test "$LEX" = ":"; then
 225         AC_MSG_ERROR([could not locate a suitable lexical generator, install flex or lex.])
 226 fi
 227
 228 AC_ARG_ENABLE([fhs-paths],
 229         [AS_HELP_STRING([--enable-fhs-paths], [Use more FHS-like pathnames (for packagers).])],
 230         [],
 231         [dnl detect if the user appears to want --enable-fhs-paths
 232         AS_IF([test "$libexecdir" = '${exec_prefix}/libexec' && \
 233                 test "$localstatedir" = '${prefix}/var' && \
 234                 test "$libdir" = '${exec_prefix}/lib'],
 235                 [enable_fhs_paths=no],
 236                 [enable_fhs_paths=yes])
 237         ])
 238 dnl use directory structure of cached as default (hack)
 239 AS_IF([test "x$enable_fhs_paths" = "xyes"],
 240         [dnl Avoid name collisions.
 241         pkglibexecdir='${libexecdir}/${PACKAGE_TARNAME}'
 242         rundir=${rundir-'${prefix}/run'}
 243         pkgrundir='${rundir}/${PACKAGE_TARNAME}'
 244         pkglocalstatedir='${localstatedir}/${PACKAGE_TARNAME}'],
 245         [libexecdir='${bindir}'
 246         pkglibexecdir='${libexecdir}'
 247         rundir='${sysconfdir}'
 248         pkgrundir='${rundir}'
 249         localstatedir='${prefix}'
 250         pkglocalstatedir='${sysconfdir}'])
 251 pkglibdir='${libdir}/${PACKAGE_TARNAME}'
 252 AC_SUBST([pkglibdir])
 253 AC_SUBST([rundir])
 254 AC_SUBST([pkgrundir])
 255 AC_SUBST([pkglocalstatedir])
 256 AC_DEFINE_DIR([PKGLOCALSTATEDIR], [pkglocalstatedir], [[Directory in which to store state, such as band database]])
 257 AC_SUBST([pkglibexecdir])
 258 AC_DEFINE_DIR([PKGLIBEXECDIR], [pkglibexecdir], [Directory where binaries the IRCd itself spawns live])
 259
 260 dnl Checks for header files.
 261 AC_HEADER_STDC
 262
 263 AC_CHECK_HEADERS([crypt.h sys/resource.h sys/param.h errno.h sys/syslog.h stddef.h sys/wait.h wait.h sys/epoll.h sys/uio.h machine/endian.h])
 264
 265 dnl Stuff that the memory manager (imalloc) depends on
 266 dnl ==================================================
 267
 268 AC_C_CONST
 269 if test "$ac_cv_header_machine_endian_h" = "no" ; then
 270     AC_C_BIGENDIAN
 271 fi
 272 AC_TYPE_PID_T
 273 AC_TYPE_SIZE_T
 274 AC_CHECK_SIZEOF(short)
 275 AC_CHECK_SIZEOF(int)
 276 AC_CHECK_SIZEOF(long)
 277 AC_CHECK_SIZEOF(long long)
 278
 279 dnl Networking Functions
 280 dnl ====================
 281
 282 AC_SEARCH_LIBS(socket, socket, , [AC_MSG_ERROR([You have no socket()! Aborting.])])
 283
 284 dnl SunOS/Solaris required libnsl for inet_ntoa()
 285 if test x"$SUN" = xyes; then
 286         AC_SEARCH_LIBS(inet_ntoa, nsl,, [AC_MSG_ERROR([libnsl not found! Aborting.])])
 287 fi
 288
 289 AC_CHECK_TYPE(socklen_t, ,
 290 [AC_DEFINE([socklen_t], [unsigned int],
 291 [If we don't have a real socklen_t, unsigned int is good enough.])],
 292 [#include <sys/types.h>
 293 #include <sys/socket.h>])
 294
 295 AC_ARG_ENABLE(ipv6,
 296 AC_HELP_STRING([--enable-ipv6],[Enable IPv6 support]),[ipv6=$enableval],[ipv6=no])
 297
 298 AC_SEARCH_LIBS(crypt, [crypt descrypt],,)
 299
 300 CRYPT_LIB=$ac_cv_search_crypt
 301
 302 if test "$CRYPT_LIB" = "none required"; then
 303         unset CRYPT_LIB
 304 elif test "$CRYPT_LIB" = no; then
 305         unset CRYPT_LIB
 306 fi
 307
 308 AC_SUBST(CRYPT_LIB)
 309
 310 if test "$ac_cv_header_sys_wait_h" = yes -o "$ac_cv_header_wait_h" = yes; then
 311         VICONF=viconf
 312         dnl We need one of the above to build viconf. Just a sanity check,
 313         dnl we don't want to stop people from building the rest of ircd
 314         dnl just because they can't build viconf.
 315 else
 316         VICONF=""
 317 fi
 318
 319 AC_SUBST(VICONF)
 320
 321 dnl See whether we can include both string.h and strings.h.
 322 AC_CACHE_CHECK([whether string.h and strings.h may both be included],
 323 gcc_cv_header_string,
 324 [
 325         AC_COMPILE_IFELSE(
 326         [#include <string.h>
 327         #include <strings.h>],
 328         [gcc_cv_header_string=yes],
 329         [gcc_cv_header_string=no])
 330 ])
 331
 332 if test "$gcc_cv_header_string" = "yes"; then
 333         AC_DEFINE(STRING_WITH_STRINGS, 1, [Define to 1 if string.h may be included along with strings.h])
 334 fi
 335
 336 AC_C_BIGENDIAN
 337
 338 dnl Check for stdarg.h - if we can't find it, halt configure
 339 AC_CHECK_HEADER(stdarg.h, , [AC_MSG_ERROR([** stdarg.h could not be found - charybdis will not compile without it **])])
 340
 341 dnl Checks for the existence of strlcat, strlcpy, basename...
 342 dnl This more reliable test only works with gcc though.
 343
 344 if test "$ac_cv_c_compiler_gnu" = yes; then
 345
 346 AC_MSG_CHECKING(for strlcpy)
 347 save_CFLAGS=$CFLAGS
 348 CFLAGS="$CFLAGS -Wimplicit -Werror"
 349
 350 AC_LINK_IFELSE(
 351         [AC_LANG_PROGRAM(
 352                 [[#include <string.h>
 353                 #include <stdlib.h>]],
 354                 [[char *a = malloc(6);
 355                 strlcpy(a, "hello", 6);]]
 356         )],
 357         [AC_MSG_RESULT(yes)
 358         AC_DEFINE(HAVE_STRLCPY, 1, [Define if strlcpy is available (most BSDs.)])],
 359         [AC_MSG_RESULT(no)]
 360 )
 361
 362 AC_MSG_CHECKING(for strlcat)
 363 AC_LINK_IFELSE(
 364         [AC_LANG_PROGRAM(
 365                 [[#include <string.h>
 366                 #include <stdlib.h>]],
 367                 [[char *a = malloc(6);
 368                 a[0] = '\0';
 369                 strlcat(a, "hello", 6);]]
 370         )],
 371         [AC_MSG_RESULT(yes)
 372         AC_DEFINE(HAVE_STRLCAT, 1, [Define if strlcat is available (most BSDs.)])],
 373         [AC_MSG_RESULT(no)]
 374 )
 375
 376 CFLAGS=$save_CFLAGS
 377
 378 else
 379
 380 dnl Better than nothing. The more complicated test above probably fixes powerpc,
 381 dnl so who cares.
 382
 383 AC_CHECK_FUNCS([strlcat strlcpy])
 384
 385 fi
 386
 387 AC_CHECK_TYPE([u_int32_t], [],
 388 [
 389         AC_CHECK_TYPE([uint32_t],
 390         [
 391                 AC_DEFINE(u_int32_t, [uint32_t], [If system does not define u_int32_t, define a reasonable substitute.])
 392         ],
 393         [
 394                 AC_MSG_WARN([system has no u_int32_t or uint32_t, default to unsigned long int])
 395                 AC_DEFINE(u_int32_t, [unsigned long int], [If system does not define u_int32_t, define to unsigned long int here.])
 396         ])
 397 ])
 398
 399 AC_CHECK_TYPE([u_int16_t], [],
 400 [
 401         AC_CHECK_TYPE([uint16_t],
 402         [
 403                 AC_DEFINE(u_int16_t, [uint16_t], [If system does not define u_int16_t, define a usable substitute])
 404         ],
 405         [
 406                 AC_MSG_WARN([system has no u_int16_t or uint16_t, default to unsigned short int])
 407                 AC_DEFINE(u_int16_t, [unsigned short int], [If system does not define u_int16_t, define a usable substitute.])
 408         ])
 409 ])
 410
 411 AC_CHECK_TYPE([in_port_t], [],
 412 [AC_DEFINE(in_port_t, [u_int16_t], [If system does not define in_port_t, define it to what it should be.])],
 413 [[#include <sys/types.h>
 414 #include <netinet/in.h>]])
 415
 416 AC_CHECK_TYPE([sa_family_t], [],
 417 [AC_DEFINE(sa_family_t, [u_int16_t], [If system does not define sa_family_t, define it here.])],
 418 [[#include <sys/types.h>
 419 #include <sys/socket.h>]])
 420
 421 AC_CHECK_TYPES([uintptr_t])
 422
 423 dnl check for various functions...
 424 AC_CHECK_FUNCS([socketpair vsnprintf mmap gettimeofday strdup strndup ])
 425
 426 AC_FUNC_ALLOCA
 427
 428 dnl Specialized functions checks
 429 dnl ============================
 430
 431 dnl check for nanosleep
 432 AC_CHECK_FUNC(nanosleep,,[AC_CHECK_LIB(rt,nanosleep,
 433                  LIBS="${LIBS} -lrt",
 434                  [AC_CHECK_LIB(posix4,nanosleep, LIBS="${LIBS} -lposix4"
 435                  )])])
 436 if test x$ac_cv_func_nanosleep = xno && test x$ac_cv_lib_posix4_nanosleep = xno  && test x$ac_cv_lib_rt_nanosleep = xno
 437 then
 438          AC_MSG_RESULT("nanosleep not found..using select for delay")
 439 else
 440          AC_DEFINE([HAVE_NANOSLEEP], 1, [Define if nanosleep exists])
 441 fi
 442
 443 dnl OpenSSL support
 444 AC_MSG_CHECKING(for OpenSSL)
 445 AC_ARG_ENABLE(openssl,
 446 [AC_HELP_STRING([--enable-openssl[=DIR]],[Enable OpenSSL support (DIR optional).])
 447 AC_HELP_STRING([--disable-openssl],[Disable OpenSSL support.])],
 448 [cf_enable_openssl=$enableval],
 449 [cf_enable_openssl="auto"])
 450
 451 if test "$cf_enable_openssl" != "no" ; then
 452         cf_openssl_basedir=""
 453         if test "$cf_enable_openssl" != "auto" &&
 454         test "$cf_enable_openssl" != "yes" ; then
 455                 dnl Support for --enable-openssl=/some/place
 456                 cf_openssl_basedir="`echo ${cf_enable_openssl} | sed 's/\/$//'`"
 457         else
 458         dnl Do the auto-probe here.  Check some common directory paths.
 459                 for dirs in /usr/local/ssl /usr/pkg /usr/local \
 460                 /usr/local/openssl ; do
 461                         if test -f "${dirs}/include/openssl/opensslv.h" ; then
 462                                 cf_openssl_basedir="${dirs}"
 463                         break
 464                         fi
 465                 done
 466                 unset dirs
 467         fi
 468         dnl Now check cf_openssl_found to see if we found anything.
 469         if test ! -z "$cf_openssl_basedir"; then
 470                 if test -f "${cf_openssl_basedir}/include/openssl/opensslv.h" ; then
 471                         SSL_INCLUDES="-I${cf_openssl_basedir}/include"
 472                         SSL_LIBS="-L${cf_openssl_basedir}/lib"
 473                 else
 474                 dnl OpenSSL wasn't found in the directory specified.  Naughty
 475                 dnl administrator...
 476                 cf_openssl_basedir=""
 477                 fi
 478         else
 479         dnl Check for stock FreeBSD 4.x and 5.x systems, since their files
 480         dnl are in /usr/include and /usr/lib.  In this case, we don't want to
 481         dnl change INCLUDES or LIBS, but still want to enable OpenSSL.
 482         dnl We can't do this check above, because some people want two versions
 483         dnl of OpenSSL installed (stock FreeBSD 4.x/5.x and /usr/local/ssl)
 484         dnl and they want /usr/local/ssl to have preference.
 485                 if test -f "/usr/include/openssl/opensslv.h" ; then
 486                         cf_openssl_basedir="/usr"
 487                 fi
 488         fi
 489
 490         dnl If we have a basedir defined, then everything is okay.  Otherwise,
 491         dnl we have a problem.
 492         if test ! -z "$cf_openssl_basedir"; then
 493                 AC_MSG_RESULT($cf_openssl_basedir)
 494                 cf_enable_openssl="yes"
 495         else
 496                 AC_MSG_RESULT([not found. Specify a correct path?])
 497                 cf_enable_openssl="no"
 498         fi
 499         unset cf_openssl_basedir
 500 else
 501         dnl If --disable-openssl was specified
 502         AC_MSG_RESULT(disabled)
 503 fi
 504
 505 save_CPPFLAGS="$CPPFLAGS"
 506 CPPFLAGS="$CPPFLAGS $SSL_INCLUDES"
 507 save_LIBS="$LIBS"
 508 LIBS="$LIBS $SSL_LIBS"
 509 if test "$cf_enable_openssl" != no; then
 510         dnl Check OpenSSL version (must be 0.9.6 or above!)
 511         AC_MSG_CHECKING(for OpenSSL 0.9.6 or above)
 512         AC_RUN_IFELSE(
 513                 AC_LANG_PROGRAM(
 514                 [#include <openssl/opensslv.h>
 515                 #include <stdlib.h>],
 516                 [[if ( OPENSSL_VERSION_NUMBER >= 0x00906000)
 517                 exit(0); else exit(1);]]),
 518         cf_openssl_version_ok=yes,
 519         cf_openssl_version_ok=no,
 520         cf_openssl_version_ok=no)
 521
 522         if test "$cf_openssl_version_ok" = yes; then
 523                 AC_MSG_RESULT(found)
 524
 525                 dnl Work around pmake/gmake conditional incompatibilities
 526                 AC_SUBST(ENCSPEED, encspeed)
 527
 528                 dnl Do all the HAVE_LIBCRYPTO magic -- and check for ciphers
 529                 CPPFLAGS="$CPPFLAGS $SSL_LIBS"
 530                 AC_CHECK_LIB(crypto, RSA_free)
 531                 SSL_LIBS="$SSL_LIBS -lcrypto"
 532                 SSL_SRCS_ENABLE='$(SSL_SRCS)'
 533         else
 534                 AC_MSG_RESULT(no - OpenSSL support disabled)
 535         fi
 536 fi
 537
 538 CPPFLAGS="$save_CPPFLAGS"
 539 LIBS="$save_LIBS"
 540
 541 dnl End OpenSSL detection
 542
 543
 544 dnl Specialized functions and libraries
 545 dnl ===================================
 546
 547 AC_ARG_WITH(zlib-path,
 548 AC_HELP_STRING([--with-zlib-path=DIR],[Path to libz.so for ziplinks support.]),
 549 [LIBS="$LIBS -L$withval"],)
 550
 551 AC_ARG_ENABLE(zlib,
 552 AC_HELP_STRING([--disable-zlib],[Disable ziplinks support]),
 553 [zlib=$enableval],[zlib=yes])
 554
 555 if test "$zlib" = yes; then
 556
 557 AC_CHECK_HEADER(zlib.h, [
 558         AC_CHECK_LIB(z, zlibVersion,
 559         [
 560                 AC_SUBST(ZLIB_LD, -lz)
 561                 AC_DEFINE(HAVE_LIBZ, 1, [Define to 1 if zlib (-lz) is available.])
 562         ], zlib=no)
 563 ], zlib=no)
 564
 565 fi
 566
 567 dnl IO Loop Selection
 568 dnl =================
 569
 570 AC_ARG_ENABLE(ports, AC_HELP_STRING([--enable-ports],[Force solaris I/O ports subsystem usage.]),
 571 [ if test $enableval = yes; then
 572         SELECT_TYPE_EXPLICIT="ports"
 573   else
 574         use_ports=no
 575   fi
 576 ],)
 577
 578 AC_ARG_ENABLE(poll, AC_HELP_STRING([--enable-poll],[Force poll() usage.]),
 579 [ if test $enableval = yes; then
 580         SELECT_TYPE_EXPLICIT="poll"
 581   else
 582         use_poll=no
 583   fi
 584 ],)
 585
 586 AC_ARG_ENABLE(select, AC_HELP_STRING([--enable-select],[Force select() usage.]),
 587 [ if test $enableval = yes; then
 588         SELECT_TYPE_EXPLICIT="select"
 589   else
 590         use_select=no
 591   fi
 592 ],)
 593
 594 AC_ARG_ENABLE(kqueue, AC_HELP_STRING([--enable-kqueue],[Force kqueue() usage.]),
 595 [ if test $enableval = yes; then
 596         SELECT_TYPE_EXPLICIT="kqueue"
 597   else
 598         use_kqueue=no
 599   fi
 600 ],)
 601
 602 AC_ARG_ENABLE(epoll, AC_HELP_STRING([--enable-epoll],[Force sys_epoll usage (Linux only).]),
 603 [ if test $enableval = yes; then
 604         SELECT_TYPE_EXPLICIT="epoll"
 605         AC_CHECK_FUNCS(epoll_ctl, [haveepoll=yes], [haveepoll=no])
 606   else
 607         use_epoll=no
 608   fi
 609 ],)
 610
 611 dnl **********************************************************************
 612 dnl Check for --with-confdir [deprecated, use --sysconfdir instead]
 613 dnl **********************************************************************
 614
 615 AC_ARG_WITH([confdir],
 616         [AC_HELP_STRING([--with-confdir=DIR],
 617                [Directory to install config files [deprecated, use --sysconfdir instead].])],
 618         [ sysconfdir=`echo $withval | sed 's/\/$//'` ],
 619         [ confdir='${sysconfdir}' ])
 620 AC_DEFINE_DIR([ETC_DIR], [sysconfdir], [Prefix where config files are installed.])
 621
 622 dnl **********************************************************************
 623 dnl Check for --with-logdir
 624 dnl **********************************************************************
 625
 626 AC_MSG_CHECKING([whether to modify logdir])
 627 AC_ARG_WITH(logdir,
 628 AC_HELP_STRING([--with-logdir=DIR],
 629                [Directory where to write logfiles.]),
 630                [ logdir=`echo $withval | sed 's/\/$//'`
 631                  AC_MSG_RESULT(yes)],
 632                [ AS_IF([test "x$enable_fhs_paths" = "xyes"],
 633                         [logdir='${localstatedir}/log/${PACKAGE_TARNAME}'],
 634                         [logdir='${prefix}/logs'])
 635                  AC_MSG_RESULT(no)])
 636 AC_DEFINE_DIR([LOG_DIR], [logdir], [Prefix where to write logfiles.])
 637 AC_SUBST_DIR([logdir])
 638
 639 dnl **********************************************************************
 640 dnl Check for --with-helpdir
 641 dnl **********************************************************************
 642
 643 AC_MSG_CHECKING([whether to modify helpdir])
 644 AC_ARG_WITH(helpdir,
 645 AC_HELP_STRING([--with-helpdir=DIR],
 646                [Directory to install help files.]),
 647                [ helpdir=`echo $withval | sed 's/\/$//'`
 648                  AC_MSG_RESULT(yes) ],
 649                [ AS_IF([test "x$enable_fhs_paths" = "xyes"],
 650                         [helpdir='${datadir}/${PACKAGE_TARNAME}/help'],
 651                         [helpdir='${prefix}/help'])
 652                  AC_MSG_RESULT(no) ])
 653 AC_DEFINE_DIR([HELP_DIR], [helpdir], [Prefix where help files are installed.])
 654 AC_SUBST_DIR([helpdir])
 655
 656 dnl **********************************************************************
 657 dnl Check for --with-moduledir
 658 dnl **********************************************************************
 659
 660 AC_MSG_CHECKING([whether to modify moduledir])
 661 AC_ARG_WITH(moduledir,
 662         [AC_HELP_STRING([--with-moduledir=DIR],
 663                [Directory to install modules.])],
 664                [ moduledir=`echo $withval | sed 's/\/$//'`
 665                  AC_MSG_RESULT(yes)],
 666                [ AS_IF([test "x$enable_fhs_paths" = "xyes"],
 667                         [moduledir='${pkglibdir}/modules'],
 668                         [moduledir='${prefix}/modules'])
 669                  AC_MSG_RESULT(no)
 670                 ])
 671 AC_DEFINE_DIR(MODULE_DIR, moduledir, [Prefix where modules are installed.])
 672 AC_SUBST_DIR([moduledir])
 673
 674 dnl Check for --with-rundir
 675
 676 AC_MSG_CHECKING([whether or modify rundir])
 677 AC_ARG_WITH([rundir],
 678         [AC_HELP_STRING([--with-rundir=DIR],
 679                 [Directory in which to store pidfile.])],
 680         [AC_MSG_RESULT([yes])
 681         rundir=`echo $withval | sed 's/\/$//'`],
 682         [AC_MSG_RESULT([no])
 683         AS_IF([test "x$enable_fhs_paths" = "xyes"],
 684                 [rundir='${prefix}/run'],
 685                 [rundir='${sysconfdir}'])])
 686 AC_SUBST([rundir])
 687 AC_DEFINE_DIR([PKGRUNDIR], [pkgrundir], [Directory to store pidfile in.])
 688
 689 dnl Installed utility program prefixes (does not affect binaries
 690 dnl installed into pkglibexecdir)
 691 AC_MSG_CHECKING([for program prefix])
 692 AC_ARG_WITH([program-prefix],
 693         [AS_HELP_STRING([--with-program-prefix=], [If set, programs installed into PATH will be installed with names prefixed by this prefix.])],
 694         [test "x$with_program_prefix" = "xno" && with_program_prefix=],
 695         [with_program_prefix=])
 696 AC_MSG_RESULT(["$with_program_prefix"])
 697 PROGRAM_PREFIX="$with_program_prefix"
 698 AC_SUBST([PROGRAM_PREFIX])
 699 AC_DEFINE_UNQUOTED([PROGRAM_PREFIX], ["$with_program_prefix"], [String with which all programs intended to be in PATH are prefixed.])
 700
 701 if test ! -z "$SELECT_TYPE_EXPLICIT"; then
 702         SELECT_TYPE="$SELECT_TYPE_EXPLICIT";
 703         echo "Forcing $SELECT_TYPE to be enabled"
 704 else
 705
 706 if test ! "x$use_ports" = "xno"; then
 707         AC_CHECK_FUNCS(port_getn, [haveports=yes], [haveports=no])
 708         if test "x$haveports" = "xyes" ; then
 709                 SELECT_TYPE="ports"
 710         fi
 711 fi
 712
 713 if test ! "x$use_select" = "xno"; then
 714         AC_CHECK_FUNCS(select, [haveselect=yes], [haveselect=no])
 715         if test "x$haveselect" = "xyes" ; then
 716                 SELECT_TYPE="select"
 717         fi
 718 fi
 719
 720 if test ! "x$use_poll" = "xno"; then
 721         AC_CHECK_FUNCS(poll, [havepoll=yes], [havepoll=no])
 722         if test "x$havepoll" = "xyes" ; then
 723                 SELECT_TYPE="poll"
 724         fi
 725 fi
 726
 727 if test ! "x$use_kqueue" = "xno"; then
 728         AC_CHECK_FUNCS(kevent, [havekqueue=yes], [havekqueue=no])
 729         if test "x$havekqueue" = "xyes" ; then
 730                 SELECT_TYPE="kqueue"
 731         fi
 732 fi
 733
 734 if test ! "x$use_epoll" = "xno"; then
 735         AC_CHECK_FUNCS(epoll_ctl, [haveepoll=yes], [haveepoll=no])
 736         if test "x$ac_cv_header_sys_epoll_h" = "xyes"; then
 737                 if test "x$haveepoll" = "xyes" ; then
 738                         AC_MSG_CHECKING(for epoll support in kernel)
 739                         AC_TRY_RUN(
 740 #include <stdint.h>
 741 #include <sys/param.h>
 742 #include <sys/types.h>
 743 #include <sys/epoll.h>
 744 #include <sys/syscall.h>
 745 #include <unistd.h>
 746
 747 int
 748 main(int argc, char **argv)
 749 {
 750         int epfd;
 751
 752         epfd = epoll_create(256);
 753         return (epfd == -1 ? 1 : 0);
 754 }, [AC_MSG_RESULT(yes)
 755             AC_DEFINE(HAVE_EPOLL, 1,
 756                 [Define if your system supports the epoll system calls])
 757             SELECT_TYPE="epoll"],
 758             AC_MSG_RESULT(no), AC_MSG_RESULT(no))
 759                 fi
 760         fi
 761
 762 haveepollsyscall=no
 763
 764 if test "x$ac_cv_header_sys_epoll_h" = "xyes"; then
 765         if test "x$haveepoll" = "xno" ; then
 766                 AC_MSG_CHECKING(for epoll system call)
 767                 AC_TRY_RUN(
 768 #include <stdint.h>
 769 #include <sys/param.h>
 770 #include <sys/types.h>
 771 #include <sys/epoll.h>
 772 #include <sys/syscall.h>
 773 #include <unistd.h>
 774
 775 int
 776 epoll_create(int size)
 777 {
 778         return (syscall(__NR_epoll_create, size));
 779 }
 780
 781 int
 782 main(int argc, char **argv)
 783 {
 784         int epfd;
 785
 786         epfd = epoll_create(256);
 787         exit (epfd == -1 ? 1 : 0);
 788 }, [AC_MSG_RESULT(yes)
 789     AC_DEFINE(HAVE_EPOLL, 1,
 790         [Define if your system supports the epoll system calls])
 791     SELECT_TYPE="epoll"],
 792     AC_MSG_RESULT(no), AC_MSG_RESULT(no))
 793         fi
 794 fi
 795
 796 fi
 797
 798 fi
 799
 800 if test -z "$SELECT_TYPE"; then
 801         AC_MSG_ERROR([Unable to find a usable IO interface],)
 802 fi
 803
 804 echo "Using $SELECT_TYPE for select loop."
 805
 806 AC_DEFINE_UNQUOTED(SELECT_TYPE, "$SELECT_TYPE", [This is the type of IO loop we are using])
 807 AC_SUBST(SELECT_TYPE)
 808
 809
 810 dnl Debug-related options
 811 dnl =====================
 812
 813 AC_ARG_ENABLE(assert,
 814 AC_HELP_STRING([--enable-assert],[Enable assert(). Choose between soft(warnings) and hard(aborts the daemon)]),
 815 [assert=$enableval], [assert=no])
 816
 817 if test "$assert" = no; then
 818         AC_DEFINE(NDEBUG, 1, [Define this to disable debugging support.])
 819 elif test "$assert" = soft; then
 820         AC_DEFINE(SOFT_ASSERT, 1, [Define this to enable soft asserts.])
 821         AC_DEFINE(NDEBUG, 1, [Define this to disable debugging support.])
 822 elif test "$assert" = yes; then
 823         assert = "hard";
 824 fi
 825
 826 AC_MSG_CHECKING(if you want IO Debugging hooks)
 827 AC_ARG_ENABLE(iodebug,
 828 AC_HELP_STRING([--enable-iodebug],[Enable IO Debugging hooks]),
 829 [iodebug=$enableval], [iodebug=no])
 830
 831 if test "$iodebug" = yes; then
 832         AC_DEFINE(USE_IODEBUG_HOOKS, 1, [Define this to enable IO Debug hooks.])
 833         AC_MSG_RESULT(yes)
 834 else
 835         AC_MSG_RESULT(no)
 836 fi
 837
 838
 839 AC_MSG_CHECKING(if you want to do a profile build)
 840 AC_ARG_ENABLE(profile,
 841 AC_HELP_STRING([--enable-profile],[Enable profiling]),
 842 [profile=$enableval], [profile=no])
 843
 844 if test "$profile" = yes; then
 845         if test "$ac_cv_c_compiler_gnu" = yes; then
 846                 IRC_CFLAGS="$IRC_CFLAGS -pg"
 847                 AC_MSG_RESULT([yes, adding -pg])
 848                 AC_DEFINE(CHARYBDIS_PROFILE, 1, [Define this if you are profiling.])
 849         else
 850                 AC_MSG_RESULT([no, profile builds only work with gcc])
 851         fi
 852 else
 853         AC_MSG_RESULT(no)
 854 fi
 855
 856 AC_ARG_ENABLE(balloc,
 857 AC_HELP_STRING([--disable-balloc],[Disable the block allocator.]),
 858 [balloc=$enableval], [balloc=yes])
 859
 860 if test "$balloc" = no; then
 861         AC_DEFINE([NOBALLOC], 1, [Define to 1 if you wish to disable the block allocator.])
 862 fi
 863
 864 AC_ARG_ENABLE(small-net,
 865 AC_HELP_STRING([--disable-small-net],[Disable small network support.]),
 866 [small_net=$enableval], [small_net=yes])
 867
 868 if test "$small_net" = yes; then
 869 dnl     AC_DEFINE([HASHSIZE], 4096, [Max number of buckets in hash tables.])
 870         AC_DEFINE([NICKNAMEHISTORYLENGTH], 1500, [Size of the WHOWAS array.])
 871         AC_DEFINE([CHANNEL_HEAP_SIZE], 256, [Size of the channel heap.])
 872         AC_DEFINE([BAN_HEAP_SIZE], 128, [Size of the ban heap.])
 873         AC_DEFINE([CLIENT_HEAP_SIZE], 256, [Size of the client heap.])
 874         AC_DEFINE([LCLIENT_HEAP_SIZE], 128, [Size of the local client heap.])
 875         AC_DEFINE([PCLIENT_HEAP_SIZE], 32, [Size of the pre-client heap.])
 876         AC_DEFINE([USER_HEAP_SIZE], 128, [Size of the user heap.])
 877         AC_DEFINE([DNODE_HEAP_SIZE], 256, [Size of the dlink_node heap.])
 878         AC_DEFINE([TOPIC_HEAP_SIZE], 256, [Size of the topic heap.])
 879         AC_DEFINE([LINEBUF_HEAP_SIZE], 128, [Size of the linebuf heap.])
 880         AC_DEFINE([MEMBER_HEAP_SIZE], 256, [Sizeof member heap.])
 881         AC_DEFINE([ND_HEAP_SIZE], 128, [Size of the nick delay heap.])
 882         AC_DEFINE([CONFITEM_HEAP_SIZE], 128, [Size of the confitem heap.])
 883         AC_DEFINE([MONITOR_HEAP_SIZE], 128, [Size of the monitor heap.])
 884         AC_DEFINE([FD_HEAP_SIZE], 128, [Size of fd heap.])
 885         AC_DEFINE([AWAY_HEAP_SIZE], 128, [Size of away heap.])
 886 else
 887 dnl These settings are for a large network like efnet..they will use lots of memory
 888 dnl so enable small net unless you really need this much support
 889         AC_DEFINE([NICKNAMEHISTORYLENGTH], 15000, [Size of the WHOWAS array.])
 890         AC_DEFINE([CHANNEL_HEAP_SIZE], 8192, [Size of the channel heap.])
 891         AC_DEFINE([BAN_HEAP_SIZE], 4096, [Size of the ban heap.])
 892         AC_DEFINE([CLIENT_HEAP_SIZE], 8192, [Size of the client heap.])
 893         AC_DEFINE([LCLIENT_HEAP_SIZE], 1024, [Size of the local client heap.])
 894         AC_DEFINE([PCLIENT_HEAP_SIZE], 256, [Size of the pre-client heap.])
 895         AC_DEFINE([USER_HEAP_SIZE], 8192, [Size of the user heap.])
 896         AC_DEFINE([DNODE_HEAP_SIZE], 8192, [Size of the dlink_node heap.])
 897         AC_DEFINE([TOPIC_HEAP_SIZE], 4096, [Size of the topic heap.])
 898         AC_DEFINE([LINEBUF_HEAP_SIZE], 2048, [Size of the linebuf heap.])
 899         AC_DEFINE([MEMBER_HEAP_SIZE], 32768, [Sizeof member heap.])
 900         AC_DEFINE([ND_HEAP_SIZE], 512, [Size of the nick delay heap.])
 901         AC_DEFINE([CONFITEM_HEAP_SIZE], 256, [Size of the confitem heap.])
 902         AC_DEFINE([MONITOR_HEAP_SIZE], 1024, [Size of the monitor heap.])
 903         AC_DEFINE([FD_HEAP_SIZE], 1024, [Size of fd heap.])
 904         AC_DEFINE([AWAY_HEAP_SIZE], 512, [Size of away heap.])
 905 fi
 906
 907 AC_ARG_WITH(nicklen,
 908 AC_HELP_STRING([--with-nicklen=LENGTH],[Set the nick length to LENGTH (default 31, max 50)]),
 909 [
 910   if ! expr "$withval" + 0 >/dev/null 2>&1; then
 911         AC_ERROR([NICKLEN must be a numeric value])
 912   fi
 913   if test $withval -ge 50; then
 914         NICKLEN=50
 915         AC_MSG_WARN([NICKLEN has a hard limit of 50. Setting NICKLEN=50])
 916   else
 917         NICKLEN="$withval"
 918   fi
 919 ], [NICKLEN=31])
 920
 921 AC_ARG_WITH(topiclen,
 922 AC_HELP_STRING([--with-topiclen=NUMBER],[Set the max topic length to NUMBER (default 390, max 390)]),
 923 [
 924  if test $withval -ge 390; then
 925         TOPICLEN=390
 926         AC_MSG_WARN([TOPICLEN has a hard limit of 390. Setting TOPICLEN=390])
 927  else
 928         TOPICLEN=$withval
 929  fi
 930 ], [TOPICLEN=390])
 931
 932 AC_DEFINE_UNQUOTED(TOPICLEN, ${TOPICLEN}, [Maximum topic length (<=390)])
 933 AC_DEFINE_UNQUOTED(NICKLEN, (${NICKLEN}+1), [Nickname length])
 934
 935 shared_modules="yes"
 936 dnl Some first-stage sanity checks.
 937 if test "$shared_modules" = yes; then
 938         dnl TenDRA's cc is called tcc too.
 939         if test "$CC" = tcc -a "$TenDRA" = "no"; then
 940                 AC_MSG_WARN([disabling shared modules: Tiny C Compiler can't create PIC])
 941                 shared_modules="no"
 942         fi
 943 fi
 944
 945 dnl Second stage: check for functions and headers.
 946 if test "$shared_modules" = yes; then
 947         DYNLINK_C=dynlink.c
 948         AC_CHECK_HEADERS(dlfcn.h)
 949         AC_SEARCH_LIBS(shl_load, dld,
 950         [
 951           AC_DEFINE(HAVE_SHL_LOAD, 1, [Define if the shl_load function is available.])
 952           SUFFIX=".sl"
 953           MOD_TARGET=hpux_shared
 954           SEDOBJ="s/\.o/.sl/g"
 955         ],
 956         dnl !shl_load:
 957         [
 958           dnl standard dlopen
 959           AC_SEARCH_LIBS(dlopen, [dl c_r],
 960           [
 961             AC_DEFINE(HAVE_DLOPEN, 1, [Define if the dlopen function is available.])
 962             SUFFIX=".so"
 963             MOD_TARGET=shared_modules
 964             SEDOBJ="s/\.o/.so/g"
 965             if test "$AppleGCC" = yes; then
 966               AC_CHECK_HEADERS([mach-o/dyld.h])
 967             fi
 968             AC_CHECK_FUNC(dlsym, ,
 969             [
 970               AC_MSG_WARN([dlsym is not available, shared modules disabled])
 971               shared_modules=no
 972             ])
 973             AC_CHECK_FUNCS(dlfunc)
 974           ],
 975           [
 976             shared_modules=no
 977           ])
 978         ])
 979 fi
 980
 981 AC_DEFINE_UNQUOTED(SHARED_SUFFIX, "$SUFFIX", [Suffix for shared libraries on this platform.])
 982
 983 dnl Third stage - wrangling the linker.
 984 if test "$shared_modules" = yes; then
 985         # The GNU linker requires the -export-dynamic option to make
 986         # all symbols visible in the dynamic symbol table.
 987         hold_ldflags=$LDFLAGS
 988         AC_MSG_CHECKING(for the ld -export-dynamic flag)
 989         LDFLAGS="${LDFLAGS} -Wl,-export-dynamic -Werror"
 990         AC_LINK_IFELSE(AC_LANG_PROGRAM([],[int i;]), found=yes, found=no)
 991         LDFLAGS=$hold_ldflags
 992
 993         if expr "`uname -s`" : ^IRIX >/dev/null 2>&1; then
 994                 found="no, IRIX ld uses -B,dynamic"
 995                 LDFLAGS="${LDFLAGS} -Wl,-B,dynamic"
 996         fi
 997
 998         if expr "`uname -s`" : ^AIX >/dev/null 2>&1; then
 999                 found="no, AIX ld uses -G -brtl"
1000                 LDFLAGS="${LDFLAGS} -Wl,-G,-brtl"
1001         fi
1002
1003         AC_MSG_RESULT($found)
1004
1005         if test "$found" = yes; then
1006                 LDFLAGS="${LDFLAGS} -Wl,-export-dynamic"
1007         fi
1008
1009         AC_MSG_CHECKING(for compiler option to produce PIC)
1010         dnl The order should be here to check for groups of compilers,
1011         dnl then for odd compilers, then if no PICFLAGS were set up,
1012         dnl check for GCC and set defaults, or else error. -jmallett
1013         if test "$SGS" = "yes"; then
1014                 AC_MSG_RESULT([SVR4 SGS interfaces: -KPIC -DPIC -G])
1015                 PICFLAGS="-KPIC -DPIC -G"
1016         fi
1017
1018         if test "$AppleGCC" = "yes"; then
1019                 AC_MSG_RESULT([Darwin Mach-O bundles: -fno-common -bundle -flat_namespace -undefined suppress])
1020                 PICFLAGS="-fno-common -bundle -flat_namespace -undefined suppress"
1021         fi
1022         dnl Please note, that on HPUX two different stages of module compilation occurs, since
1023         dnl while compiling modules, the compiler does not allow you to give arguments
1024         dnl to the linker. (I did not design this)
1025         dnl So we need -c in the first stage of module compilation.
1026         dnl In the second stage, we link the modules via ld -b.
1027         dnl Additionally, HPUX does not like -export-dynamic, it likes -E instead.
1028         dnl -TimeMr14C
1029         if test "$HPUX" = "yes" -a "$CC" != gcc; then
1030                 AC_MSG_RESULT(HP-UX cc: +z -r -q -n)
1031                 PICFLAGS="+z -r -q -n -c"
1032                 AC_MSG_CHECKING([if +ESfic is required on this platform])
1033
1034                 if expr "`$CC +ESfic 2>&1`" : ".*neither supported.*" >/dev/null; then
1035                         AC_MSG_RESULT(no)
1036                 else
1037                         AC_MSG_RESULT(yes)
1038                         PICFLAGS="$PICFLAGS +ESfic"
1039                 fi
1040
1041                 LDFLAGS="${LDFLAGS} -Wl,-E"
1042         fi
1043         if test "$Tru" = yes -a "$CC" != gcc; then
1044                 AC_MSG_RESULT([Tru64: -shared -expect_unresolved '*'])
1045                 PICFLAGS="-shared -expect_unresolved '*' "
1046                 LDFLAGS="-call_shared"
1047         fi
1048         if test -z "$PICFLAGS"; then
1049                 if test "$ac_cv_c_compiler_gnu" = "yes"; then
1050                         AC_MSG_RESULT(gcc: -fPIC -DPIC -shared)
1051                         PICFLAGS="-fPIC -DPIC -shared"
1052                 else
1053                         AC_MSG_RESULT(no)
1054                         shared_modules=no
1055                 fi
1056         fi
1057 fi
1058
1059 # rpath, for finding libratbox.so at run time
1060 hold_ldflags=$LDFLAGS
1061 AC_MSG_CHECKING(for the ld -rpath flag)
1062 LDFLAGS="${LDFLAGS} -Wl,-rpath=${libdir}"
1063 AC_LINK_IFELSE(AC_LANG_PROGRAM([],[int i;]), found=yes, found=no)
1064 LDFLAGS=$hold_ldflags
1065 AC_MSG_RESULT($found)
1066 if test "$found" = yes; then
1067         LDFLAGS="${LDFLAGS} -Wl,-rpath=\${libdir}"
1068 fi
1069
1070 # This must be down here, or it will mess up checks like the ones
1071 # for -Wl,-export-dynamic
1072 # -- jilles
1073 CWARNS=""
1074 AC_ARG_ENABLE(warnings,
1075 AC_HELP_STRING([--enable-warnings],[Enable all sorts of warnings for debugging.]),
1076 [
1077 IRC_CFLAGS="$IRC_CFLAGS -O0"
1078 CFLAGS="$IRC_CFLAGS"
1079
1080 CHARYBDIS_C_GCC_TRY_FLAGS([-Wall], charybdis_cv_c_gcc_w_all)
1081 CHARYBDIS_C_GCC_TRY_FLAGS([-Wpointer-arith], charybdis_cv_c_gcc_w_pointer_arith)
1082 CHARYBDIS_C_GCC_TRY_FLAGS([-Wimplicit -Wnested-externs], charybdis_cv_c_gcc_w_implicit)
1083 CHARYBDIS_C_GCC_TRY_FLAGS([-Wcast-align], charybdis_cv_c_gcc_w_cast_align)
1084 CHARYBDIS_C_GCC_TRY_FLAGS([-Wcast-qual], charybdis_cv_c_gcc_w_cast_qual)
1085 CHARYBDIS_C_GCC_TRY_FLAGS([-Wwrite-strings], charybdis_cv_c_gcc_w_write_strings)
1086 CHARYBDIS_C_GCC_TRY_FLAGS([-Werror-implicit-function-declaration], charybdis_cv_c_gcc_w_error_implicit_function_declaration)
1087 CHARYBDIS_C_GCC_TRY_FLAGS([-Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations], charybdis_cv_c_gcc_prototypes)
1088 CHARYBDIS_C_GCC_TRY_FLAGS([-Wparenthesis], charybdis_cv_c_gcc_parenthesis)
1089 CHARYBDIS_C_GCC_TRY_FLAGS([-W -Wno-unused], charybdis_cv_c_gcc_w)
1090 CHARYBDIS_C_GCC_TRY_FLAGS([-Wextra], charybdis_cv_c_gcc_w_extra)
1091 CHARYBDIS_C_GCC_TRY_FLAGS([-Wshadow], charybdis_cv_c_gcc_w_shadow)
1092 CHARYBDIS_C_GCC_TRY_FLAGS([-Wmissing-noreturn], charybdis_cv_c_gcc_w_missing_noreturn)
1093 CHARYBDIS_C_GCC_TRY_FLAGS([-Wundef], charybdis_cv_c_gcc_w_undef)
1094 CHARYBDIS_C_GCC_TRY_FLAGS([-Wpacked], charybdis_cv_c_gcc_w_packed)
1095 CHARYBDIS_C_GCC_TRY_FLAGS([-Wnested-externs], charybdis_cv_c_gcc_w_nested_externs)
1096 CHARYBDIS_C_GCC_TRY_FLAGS([-Wunused-function -Wunused-label -Wunused-value -Wunused-variable], charybdis_cv_c_gcc_w_unused)
1097 CHARYBDIS_C_GCC_TRY_FLAGS([-Wredundant-decls], charybdis_cv_c_gcc_w_redundant_decls)
1098 CHARYBDIS_C_GCC_TRY_FLAGS([-Wfloat-equal], charybdis_cv_c_gcc_w_float_equal)
1099 CHARYBDIS_C_GCC_TRY_FLAGS([-Wformat -Wformat-y2k -Wno-format-security], charybdis_cv_c_gcc_w_format)
1100
1101 IRC_CFLAGS="$CFLAGS"
1102 ],[])
1103
1104 if test "$shared_modules" = no; then
1105         DYNLINK_C=""
1106         MOD_TARGET="libmodules.a"
1107         MODULES_LIBS="../modules/libmodules.a"
1108         SEDOBJ=""
1109         AC_DEFINE(STATIC_MODULES, 1, [Define to 1 if dynamic modules can't be used.])
1110         AC_MSG_WARN([shared module support has been disabled!])
1111 fi
1112
1113 dnl Stage 5 - underscores in front of symbol names.
1114 if test "$shared_modules" = yes; then
1115
1116         AC_CHECK_FUNC(nlist,,
1117                 AC_CHECK_LIB(dl, nlist, nlist_lib="-ldl",
1118                         AC_CHECK_LIB(elf, nlist, nlist_lib="-lelf",)
1119                 )
1120         )
1121
1122         dnl We need to find out whether underscores are appended to symbol
1123         dnl names in executable files.  First, though, we need to see
1124         dnl where nlist.h is hiding.
1125         AC_CHECK_HEADER(libelf/nlist.h, [ nlist_h="libelf/nlist.h" ], )
1126         AC_CHECK_HEADER(elf/nlist.h, [ nlist_h="elf/nlist.h" ], )
1127         AC_CHECK_HEADER(nlist.h, [ nlist_h="nlist.h" ], )
1128         if test x"$nlist_h" = "x"; then
1129                 AC_DEFINE_UNQUOTED(SYMBOL_PREFIX, "", [String containing extra underscores prepended to symbols loaded from modules.])
1130         else
1131                 AC_MSG_CHECKING(for extra underscores prepended to symbol names)
1132                 AC_CACHE_VAL(symbol_underscores,
1133                 [
1134 cat << EOF > conftest.c
1135 #include <$nlist_h>
1136 #include <stdio.h>
1137 #include <stdlib.h>
1138 void _modinit(void);
1139 int main(int argc, char *argv[[]]) {
1140         int i;
1141         struct nlist nl[[5]];
1142
1143         /* fill the names in this way, so it'll work almost everywhere */
1144         nl[[0]].n_name = "_modinit";
1145         nl[[1]].n_name = "__modinit";
1146         nl[[2]].n_name = "___modinit";
1147         nl[[3]].n_name = "____modinit";
1148         nl[[0]].n_value = nl[[1]].n_value = nl[[2]].n_value = nl[[3]].n_value = nl[[4]].n_name = NULL;
1149
1150         if(argc < 2 || (nlist(argv[[1]], nl)) == -1) exit(-1);
1151         for(i = 0; i < 4; i++) {
1152                 if(nl[[i]].n_value != NULL)
1153                 {
1154                         int j;
1155                         for(j = 0; j < i; j++)
1156                                 printf("_");
1157                         exit(i);
1158                 }
1159         }
1160         exit(-1);
1161 }
1162 void _modinit(void) { return; }
1163 EOF
1164                 $CC $CPPFLAGS $IRC_CFLAGS -o conftest conftest.c $nlist_lib >/dev/null 2>&1
1165                 symbol_underscores=`./conftest conftest`
1166                 AC_MSG_RESULT($symbol_underscores)
1167                 $RM -f conftest conftest.c
1168                 ])
1169                 AC_DEFINE_UNQUOTED(SYMBOL_PREFIX, "${symbol_underscores}", [String containing extra underscores prepended to symbols loaded from modules.])
1170         fi
1171 fi
1172
1173 IRC_CFLAGS="$IRC_CFLAGS $CWARNS"
1174
1175 AC_SUBST(MODULES_LIBS)
1176 AC_SUBST(MOD_TARGET)
1177
1178 AC_SUBST(SSL_SRCS_ENABLE)
1179 AC_SUBST(SSL_INCLUDES)
1180 AC_SUBST(SSL_LIBS)
1181
1182 AC_SUBST(LDFLAGS)
1183 AC_SUBST(PICFLAGS)
1184 AC_SUBST(IRC_CFLAGS)
1185 AC_SUBST(SEDOBJ)
1186
1187
1188 if test "$prefix" = "NONE"; then
1189         AC_DEFINE_UNQUOTED(IRCD_PREFIX, "$ac_default_prefix", [Prefix where the ircd is installed.])
1190
1191 else
1192
1193 dnl Don't get bitten by Cygwin's stupidity if the user specified
1194 dnl a custom prefix with a trailing slash
1195
1196         prefix=`echo $prefix | sed 's/\/$//'`
1197         AC_DEFINE_UNQUOTED(IRCD_PREFIX, "$prefix", [Prefix where the ircd is installed.])
1198
1199 fi
1200
1201 AC_CONFIG_FILES(                        \
1202         Makefile                        \
1203         bandb/Makefile                  \
1204         ssld/Makefile                   \
1205         extensions/Makefile             \
1206         unsupported/Makefile            \
1207         src/Makefile                    \
1208         modules/Makefile                \
1209         tools/Makefile                  \
1210         tools/genssl.sh                 \
1211         doc/Makefile                    \
1212         help/Makefile                   \
1213 )
1214 AC_CONFIG_COMMANDS([tools/genssl.sh_chmod], [chmod 755 tools/genssl.sh])
1215
1216 AC_OUTPUT
1217
1218 if test "$cf_openssl_version_ok" = yes; then
1219         openssl="yes"
1220 else
1221         openssl="no"
1222 fi
1223
1224 if test "$shared_modules" = yes; then
1225         modules=shared
1226 else
1227         modules=static
1228 fi
1229
1230 echo "
1231 Configuration:
1232         Install directory  : $prefix
1233
1234         Ziplinks           : $zlib
1235         OpenSSL            : $openssl
1236         Socket Engine      : $SELECT_TYPE
1237         Small network      : $small_net
1238         Block allocator    : $balloc
1239
1240         Nickname length    : $NICKLEN
1241         Topic length       : $TOPICLEN
1242
1243 Use (g)make to compile ShadowIRCd, then (g)make install to install it.
1244 "