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 $])
  12
  13 AC_INIT([charybdis],[3.1])
  14
  15 AC_CONFIG_HEADER(include/setup.h)
  16
  17 AC_PREFIX_DEFAULT($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 dnl use directory structure of cached as default (hack)
 229 if test "$libexecdir" = '${exec_prefix}/libexec' &&
 230    test "$localstatedir" = '${prefix}/var'; then
 231         libexecdir='${bindir}'
 232         localstatedir='${prefix}'
 233 fi
 234
 235 dnl Checks for header files.
 236 AC_HEADER_STDC
 237
 238 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])
 239
 240 dnl Stuff that the memory manager (imalloc) depends on
 241 dnl ==================================================
 242
 243 AC_C_CONST
 244 if test "$ac_cv_header_machine_endian_h" = "no" ; then
 245     AC_C_BIGENDIAN
 246 fi
 247 AC_TYPE_PID_T
 248 AC_TYPE_SIZE_T
 249 AC_CHECK_SIZEOF(short)
 250 AC_CHECK_SIZEOF(int)
 251 AC_CHECK_SIZEOF(long)
 252 AC_CHECK_SIZEOF(long long)
 253
 254 dnl Networking Functions
 255 dnl ====================
 256
 257 AC_SEARCH_LIBS(socket, socket, , [AC_MSG_ERROR([You have no socket()! Aborting.])])
 258
 259 dnl SunOS/Solaris required libnsl for inet_ntoa()
 260 if test x"$SUN" = xyes; then
 261         AC_SEARCH_LIBS(inet_ntoa, nsl,, [AC_MSG_ERROR([libnsl not found! Aborting.])])
 262 fi
 263
 264 AC_CHECK_TYPE(socklen_t, ,
 265 [AC_DEFINE([socklen_t], [unsigned int],
 266 [If we don't have a real socklen_t, unsigned int is good enough.])],
 267 [#include <sys/types.h>
 268 #include <sys/socket.h>])
 269
 270 AC_ARG_ENABLE(ipv6,
 271 AC_HELP_STRING([--enable-ipv6],[Enable IPv6 support]),[ipv6=$enableval],[ipv6=no])
 272
 273 AC_SEARCH_LIBS(crypt, [crypt descrypt],,)
 274
 275 CRYPT_LIB=$ac_cv_search_crypt
 276
 277 if test "$CRYPT_LIB" = "none required"; then
 278         unset CRYPT_LIB
 279 elif test "$CRYPT_LIB" = no; then
 280         unset CRYPT_LIB
 281 fi
 282
 283 AC_SUBST(CRYPT_LIB)
 284
 285 if test "$ac_cv_header_sys_wait_h" = yes -o "$ac_cv_header_wait_h" = yes; then
 286         VICONF=viconf
 287         dnl We need one of the above to build viconf. Just a sanity check,
 288         dnl we don't want to stop people from building the rest of ircd
 289         dnl just because they can't build viconf.
 290 else
 291         VICONF=""
 292 fi
 293
 294 AC_SUBST(VICONF)
 295
 296 dnl See whether we can include both string.h and strings.h.
 297 AC_CACHE_CHECK([whether string.h and strings.h may both be included],
 298 gcc_cv_header_string,
 299 [
 300         AC_COMPILE_IFELSE(
 301         [#include <string.h>
 302         #include <strings.h>],
 303         [gcc_cv_header_string=yes],
 304         [gcc_cv_header_string=no])
 305 ])
 306
 307 if test "$gcc_cv_header_string" = "yes"; then
 308         AC_DEFINE(STRING_WITH_STRINGS, 1, [Define to 1 if string.h may be included along with strings.h])
 309 fi
 310
 311 AC_C_BIGENDIAN
 312
 313 dnl Check for stdarg.h - if we can't find it, halt configure
 314 AC_CHECK_HEADER(stdarg.h, , [AC_MSG_ERROR([** stdarg.h could not be found - charybdis will not compile without it **])])
 315
 316 dnl Checks for the existence of strlcat, strlcpy, basename...
 317 dnl This more reliable test only works with gcc though.
 318
 319 if test "$ac_cv_c_compiler_gnu" = yes; then
 320
 321 AC_MSG_CHECKING(for strlcpy)
 322 save_CFLAGS=$CFLAGS
 323 CFLAGS="$CFLAGS -Wimplicit -Werror"
 324
 325 AC_LINK_IFELSE(
 326         [AC_LANG_PROGRAM(
 327                 [[#include <string.h>
 328                 #include <stdlib.h>]],
 329                 [[char *a = malloc(6);
 330                 strlcpy(a, "hello", 6);]]
 331         )],
 332         [AC_MSG_RESULT(yes)
 333         AC_DEFINE(HAVE_STRLCPY, 1, [Define if strlcpy is available (most BSDs.)])],
 334         [AC_MSG_RESULT(no)]
 335 )
 336
 337 AC_MSG_CHECKING(for strlcat)
 338 AC_LINK_IFELSE(
 339         [AC_LANG_PROGRAM(
 340                 [[#include <string.h>
 341                 #include <stdlib.h>]],
 342                 [[char *a = malloc(6);
 343                 a[0] = '\0';
 344                 strlcat(a, "hello", 6);]]
 345         )],
 346         [AC_MSG_RESULT(yes)
 347         AC_DEFINE(HAVE_STRLCAT, 1, [Define if strlcat is available (most BSDs.)])],
 348         [AC_MSG_RESULT(no)]
 349 )
 350
 351 CFLAGS=$save_CFLAGS
 352
 353 else
 354
 355 dnl Better than nothing. The more complicated test above probably fixes powerpc,
 356 dnl so who cares.
 357
 358 AC_CHECK_FUNCS([strlcat strlcpy])
 359
 360 fi
 361
 362 AC_CHECK_TYPE([u_int32_t], [],
 363 [
 364         AC_CHECK_TYPE([uint32_t],
 365         [
 366                 AC_DEFINE(u_int32_t, [uint32_t], [If system does not define u_int32_t, define a reasonable substitute.])
 367         ],
 368         [
 369                 AC_MSG_WARN([system has no u_int32_t or uint32_t, default to unsigned long int])
 370                 AC_DEFINE(u_int32_t, [unsigned long int], [If system does not define u_int32_t, define to unsigned long int here.])
 371         ])
 372 ])
 373
 374 AC_CHECK_TYPE([u_int16_t], [],
 375 [
 376         AC_CHECK_TYPE([uint16_t],
 377         [
 378                 AC_DEFINE(u_int16_t, [uint16_t], [If system does not define u_int16_t, define a usable substitute])
 379         ],
 380         [
 381                 AC_MSG_WARN([system has no u_int16_t or uint16_t, default to unsigned short int])
 382                 AC_DEFINE(u_int16_t, [unsigned short int], [If system does not define u_int16_t, define a usable substitute.])
 383         ])
 384 ])
 385
 386 AC_CHECK_TYPE([in_port_t], [],
 387 [AC_DEFINE(in_port_t, [u_int16_t], [If system does not define in_port_t, define it to what it should be.])],
 388 [[#include <sys/types.h>
 389 #include <netinet/in.h>]])
 390
 391 AC_CHECK_TYPE([sa_family_t], [],
 392 [AC_DEFINE(sa_family_t, [u_int16_t], [If system does not define sa_family_t, define it here.])],
 393 [[#include <sys/types.h>
 394 #include <sys/socket.h>]])
 395
 396 AC_CHECK_TYPES([uintptr_t])
 397
 398 dnl check for various functions...
 399 AC_CHECK_FUNCS([socketpair vsnprintf mmap gettimeofday strdup strndup ])
 400
 401 AC_FUNC_ALLOCA
 402
 403 dnl Specialized functions checks
 404 dnl ============================
 405
 406 dnl check for nanosleep
 407 AC_CHECK_FUNC(nanosleep,,[AC_CHECK_LIB(rt,nanosleep,
 408                  LIBS="${LIBS} -lrt",
 409                  [AC_CHECK_LIB(posix4,nanosleep, LIBS="${LIBS} -lposix4"
 410                  )])])
 411 if test x$ac_cv_func_nanosleep = xno && test x$ac_cv_lib_posix4_nanosleep = xno  && test x$ac_cv_lib_rt_nanosleep = xno
 412 then
 413          AC_MSG_RESULT("nanosleep not found..using select for delay")
 414 else
 415          AC_DEFINE([HAVE_NANOSLEEP], 1, [Define if nanosleep exists])
 416 fi
 417
 418 dnl OpenSSL support
 419 AC_MSG_CHECKING(for OpenSSL)
 420 AC_ARG_ENABLE(openssl,
 421 [AC_HELP_STRING([--enable-openssl[=DIR]],[Enable OpenSSL support (DIR optional).])
 422 AC_HELP_STRING([--disable-openssl],[Disable OpenSSL support.])],
 423 [cf_enable_openssl=$enableval],
 424 [cf_enable_openssl="auto"])
 425
 426 if test "$cf_enable_openssl" != "no" ; then
 427         cf_openssl_basedir=""
 428         if test "$cf_enable_openssl" != "auto" &&
 429         test "$cf_enable_openssl" != "yes" ; then
 430                 dnl Support for --enable-openssl=/some/place
 431                 cf_openssl_basedir="`echo ${cf_enable_openssl} | sed 's/\/$//'`"
 432         else
 433         dnl Do the auto-probe here.  Check some common directory paths.
 434                 for dirs in /usr/local/ssl /usr/pkg /usr/local \
 435                 /usr/local/openssl ; do
 436                         if test -f "${dirs}/include/openssl/opensslv.h" ; then
 437                                 cf_openssl_basedir="${dirs}"
 438                         break
 439                         fi
 440                 done
 441                 unset dirs
 442         fi
 443         dnl Now check cf_openssl_found to see if we found anything.
 444         if test ! -z "$cf_openssl_basedir"; then
 445                 if test -f "${cf_openssl_basedir}/include/openssl/opensslv.h" ; then
 446                         SSL_INCLUDES="-I${cf_openssl_basedir}/include"
 447                         SSL_LIBS="-L${cf_openssl_basedir}/lib"
 448                 else
 449                 dnl OpenSSL wasn't found in the directory specified.  Naughty
 450                 dnl administrator...
 451                 cf_openssl_basedir=""
 452                 fi
 453         else
 454         dnl Check for stock FreeBSD 4.x and 5.x systems, since their files
 455         dnl are in /usr/include and /usr/lib.  In this case, we don't want to
 456         dnl change INCLUDES or LIBS, but still want to enable OpenSSL.
 457         dnl We can't do this check above, because some people want two versions
 458         dnl of OpenSSL installed (stock FreeBSD 4.x/5.x and /usr/local/ssl)
 459         dnl and they want /usr/local/ssl to have preference.
 460                 if test -f "/usr/include/openssl/opensslv.h" ; then
 461                         cf_openssl_basedir="/usr"
 462                 fi
 463         fi
 464
 465         dnl If we have a basedir defined, then everything is okay.  Otherwise,
 466         dnl we have a problem.
 467         if test ! -z "$cf_openssl_basedir"; then
 468                 AC_MSG_RESULT($cf_openssl_basedir)
 469                 cf_enable_openssl="yes"
 470         else
 471                 AC_MSG_RESULT([not found. Specify a correct path?])
 472                 cf_enable_openssl="no"
 473         fi
 474         unset cf_openssl_basedir
 475 else
 476         dnl If --disable-openssl was specified
 477         AC_MSG_RESULT(disabled)
 478 fi
 479
 480 save_CPPFLAGS="$CPPFLAGS"
 481 CPPFLAGS="$CPPFLAGS $SSL_INCLUDES"
 482 save_LIBS="$LIBS"
 483 LIBS="$LIBS $SSL_LIBS"
 484 if test "$cf_enable_openssl" != no; then
 485         dnl Check OpenSSL version (must be 0.9.6 or above!)
 486         AC_MSG_CHECKING(for OpenSSL 0.9.6 or above)
 487         AC_RUN_IFELSE(
 488                 AC_LANG_PROGRAM(
 489                 [#include <openssl/opensslv.h>
 490                 #include <stdlib.h>],
 491                 [[if ( OPENSSL_VERSION_NUMBER >= 0x00906000)
 492                 exit(0); else exit(1);]]),
 493         cf_openssl_version_ok=yes,
 494         cf_openssl_version_ok=no,
 495         cf_openssl_version_ok=no)
 496
 497         if test "$cf_openssl_version_ok" = yes; then
 498                 AC_MSG_RESULT(found)
 499
 500                 dnl Work around pmake/gmake conditional incompatibilities
 501                 AC_SUBST(ENCSPEED, encspeed)
 502
 503                 dnl Do all the HAVE_LIBCRYPTO magic -- and check for ciphers
 504                 CPPFLAGS="$CPPFLAGS $SSL_LIBS"
 505                 AC_CHECK_LIB(crypto, RSA_free)
 506                 SSL_LIBS="$SSL_LIBS -lcrypto"
 507                 SSL_SRCS_ENABLE='$(SSL_SRCS)'
 508         else
 509                 AC_MSG_RESULT(no - OpenSSL support disabled)
 510         fi
 511 fi
 512
 513 CPPFLAGS="$save_CPPFLAGS"
 514 LIBS="$save_LIBS"
 515
 516 dnl End OpenSSL detection
 517
 518
 519 dnl Specialized functions and libraries
 520 dnl ===================================
 521
 522 AC_ARG_WITH(zlib-path,
 523 AC_HELP_STRING([--with-zlib-path=DIR],[Path to libz.so for ziplinks support.]),
 524 [LIBS="$LIBS -L$withval"],)
 525
 526 AC_ARG_ENABLE(zlib,
 527 AC_HELP_STRING([--disable-zlib],[Disable ziplinks support]),
 528 [zlib=$enableval],[zlib=yes])
 529
 530 if test "$zlib" = yes; then
 531
 532 AC_CHECK_HEADER(zlib.h, [
 533         AC_CHECK_LIB(z, zlibVersion,
 534         [
 535                 AC_SUBST(ZLIB_LD, -lz)
 536                 AC_DEFINE(HAVE_LIBZ, 1, [Define to 1 if zlib (-lz) is available.])
 537         ], zlib=no)
 538 ], zlib=no)
 539
 540 fi
 541
 542 dnl IO Loop Selection
 543 dnl =================
 544
 545 AC_ARG_ENABLE(ports, AC_HELP_STRING([--enable-ports],[Force solaris I/O ports subsystem usage.]),
 546 [ if test $enableval = yes; then
 547         SELECT_TYPE_EXPLICIT="ports"
 548   else
 549         use_ports=no
 550   fi
 551 ],)
 552
 553 AC_ARG_ENABLE(poll, AC_HELP_STRING([--enable-poll],[Force poll() usage.]),
 554 [ if test $enableval = yes; then
 555         SELECT_TYPE_EXPLICIT="poll"
 556   else
 557         use_poll=no
 558   fi
 559 ],)
 560
 561 AC_ARG_ENABLE(select, AC_HELP_STRING([--enable-select],[Force select() usage.]),
 562 [ if test $enableval = yes; then
 563         SELECT_TYPE_EXPLICIT="select"
 564   else
 565         use_select=no
 566   fi
 567 ],)
 568
 569 AC_ARG_ENABLE(kqueue, AC_HELP_STRING([--enable-kqueue],[Force kqueue() usage.]),
 570 [ if test $enableval = yes; then
 571         SELECT_TYPE_EXPLICIT="kqueue"
 572   else
 573         use_kqueue=no
 574   fi
 575 ],)
 576
 577 AC_ARG_ENABLE(epoll, AC_HELP_STRING([--enable-epoll],[Force sys_epoll usage (Linux only).]),
 578 [ if test $enableval = yes; then
 579         SELECT_TYPE_EXPLICIT="epoll"
 580         AC_CHECK_FUNCS(epoll_ctl, [haveepoll=yes], [haveepoll=no])
 581   else
 582         use_epoll=no
 583   fi
 584 ],)
 585
 586 dnl **********************************************************************
 587 dnl Check for --with-confdir
 588 dnl **********************************************************************
 589
 590 AC_MSG_CHECKING([whether to modify confdir])
 591 AC_ARG_WITH(confdir,
 592 AC_HELP_STRING([--with-confdir=DIR],
 593                [Directory to install config files.]),
 594                [ confdir=`echo $withval | sed 's/\/$//'`
 595                  AC_MSG_RESULT(yes)
 596                  AC_DEFINE_DIR(ETC_DIR, confdir, [Prefix where config files are installed.])
 597                  AC_SUBST_DIR([confdir]) ],
 598                [ confdir='${prefix}/etc'
 599                  AC_MSG_RESULT(no)
 600                  AC_DEFINE_DIR(ETC_DIR, confdir, [Prefix where config files are installed.])
 601                  AC_SUBST_DIR([confdir])]
 602 )
 603
 604 dnl **********************************************************************
 605 dnl Check for --with-logdir
 606 dnl **********************************************************************
 607
 608 AC_MSG_CHECKING([whether to modify logdir])
 609 AC_ARG_WITH(logdir,
 610 AC_HELP_STRING([--with-logdir=DIR],
 611                [Directory where to write logfiles.]),
 612                [ logdir=`echo $withval | sed 's/\/$//'`
 613                  AC_MSG_RESULT(yes)
 614                  AC_DEFINE_DIR(LOG_DIR, logdir, [Prefix where to write logfiles.])
 615                  AC_SUBST_DIR([logdir]) ],
 616                [ logdir='${prefix}/logs'
 617                  AC_MSG_RESULT(no)
 618                  AC_DEFINE_DIR(LOG_DIR, logdir, [Prefix where to write logfiles.])
 619                  AC_SUBST_DIR([logdir])]
 620 )
 621
 622 dnl **********************************************************************
 623 dnl Check for --with-helpdir
 624 dnl **********************************************************************
 625
 626 AC_MSG_CHECKING([whether to modify helpdir])
 627 AC_ARG_WITH(helpdir,
 628 AC_HELP_STRING([--with-helpdir=DIR],
 629                [Directory to install help files.]),
 630                [ helpdir=`echo $withval | sed 's/\/$//'`
 631                  AC_MSG_RESULT(yes)
 632                  AC_DEFINE_DIR(HELP_DIR, helpdir, [Prefix where help files are installed.])
 633                  AC_SUBST_DIR([helpdir]) ],
 634                [ helpdir='${prefix}/help'
 635                  AC_MSG_RESULT(no)
 636                  AC_DEFINE_DIR(HELP_DIR, helpdir, [Prefix where help file are installed.])
 637                  AC_SUBST_DIR([helpdir])]
 638 )
 639
 640 dnl **********************************************************************
 641 dnl Check for --with-moduledir
 642 dnl **********************************************************************
 643
 644 AC_MSG_CHECKING([whether to modify moduledir])
 645 AC_ARG_WITH(moduledir,
 646 AC_HELP_STRING([--with-moduledir=DIR],
 647                [Directory to install modules.]),
 648                [ moduledir=`echo $withval | sed 's/\/$//'`
 649                  AC_MSG_RESULT(yes)
 650                  AC_DEFINE_DIR(MODULE_DIR, moduledir, [Prefix where modules are installed.])
 651                  AC_SUBST_DIR([moduledir]) ],
 652                [ moduledir='${prefix}/modules'
 653                  AC_MSG_RESULT(no)
 654                  AC_DEFINE_DIR(MODULE_DIR, moduledir, [Prefix where modules are installed.])
 655                  AC_SUBST_DIR([moduledir])]
 656 )
 657
 658 if test ! -z "$SELECT_TYPE_EXPLICIT"; then
 659         SELECT_TYPE="$SELECT_TYPE_EXPLICIT";
 660         echo "Forcing $SELECT_TYPE to be enabled"
 661 else
 662
 663 if test ! "x$use_ports" = "xno"; then
 664         AC_CHECK_FUNCS(port_getn, [haveports=yes], [haveports=no])
 665         if test "x$haveports" = "xyes" ; then
 666                 SELECT_TYPE="ports"
 667         fi
 668 fi
 669
 670 if test ! "x$use_select" = "xno"; then
 671         AC_CHECK_FUNCS(select, [haveselect=yes], [haveselect=no])
 672         if test "x$haveselect" = "xyes" ; then
 673                 SELECT_TYPE="select"
 674         fi
 675 fi
 676
 677 if test ! "x$use_poll" = "xno"; then
 678         AC_CHECK_FUNCS(poll, [havepoll=yes], [havepoll=no])
 679         if test "x$havepoll" = "xyes" ; then
 680                 SELECT_TYPE="poll"
 681         fi
 682 fi
 683
 684 if test ! "x$use_kqueue" = "xno"; then
 685         AC_CHECK_FUNCS(kevent, [havekqueue=yes], [havekqueue=no])
 686         if test "x$havekqueue" = "xyes" ; then
 687                 SELECT_TYPE="kqueue"
 688         fi
 689 fi
 690
 691 if test ! "x$use_epoll" = "xno"; then
 692         AC_CHECK_FUNCS(epoll_ctl, [haveepoll=yes], [haveepoll=no])
 693         if test "x$ac_cv_header_sys_epoll_h" = "xyes"; then
 694                 if test "x$haveepoll" = "xyes" ; then
 695                         AC_MSG_CHECKING(for epoll support in kernel)
 696                         AC_TRY_RUN(
 697 #include <stdint.h>
 698 #include <sys/param.h>
 699 #include <sys/types.h>
 700 #include <sys/epoll.h>
 701 #include <sys/syscall.h>
 702 #include <unistd.h>
 703
 704 int
 705 main(int argc, char **argv)
 706 {
 707         int epfd;
 708
 709         epfd = epoll_create(256);
 710         return (epfd == -1 ? 1 : 0);
 711 }, [AC_MSG_RESULT(yes)
 712             AC_DEFINE(HAVE_EPOLL, 1,
 713                 [Define if your system supports the epoll system calls])
 714             SELECT_TYPE="epoll"],
 715             AC_MSG_RESULT(no), AC_MSG_RESULT(no))
 716                 fi
 717         fi
 718
 719 haveepollsyscall=no
 720
 721 if test "x$ac_cv_header_sys_epoll_h" = "xyes"; then
 722         if test "x$haveepoll" = "xno" ; then
 723                 AC_MSG_CHECKING(for epoll system call)
 724                 AC_TRY_RUN(
 725 #include <stdint.h>
 726 #include <sys/param.h>
 727 #include <sys/types.h>
 728 #include <sys/epoll.h>
 729 #include <sys/syscall.h>
 730 #include <unistd.h>
 731
 732 int
 733 epoll_create(int size)
 734 {
 735         return (syscall(__NR_epoll_create, size));
 736 }
 737
 738 int
 739 main(int argc, char **argv)
 740 {
 741         int epfd;
 742
 743         epfd = epoll_create(256);
 744         exit (epfd == -1 ? 1 : 0);
 745 }, [AC_MSG_RESULT(yes)
 746     AC_DEFINE(HAVE_EPOLL, 1,
 747         [Define if your system supports the epoll system calls])
 748     SELECT_TYPE="epoll"],
 749     AC_MSG_RESULT(no), AC_MSG_RESULT(no))
 750         fi
 751 fi
 752
 753 fi
 754
 755 fi
 756
 757 if test -z "$SELECT_TYPE"; then
 758         AC_MSG_ERROR([Unable to find a usable IO interface],)
 759 fi
 760
 761 echo "Using $SELECT_TYPE for select loop."
 762
 763 AC_DEFINE_UNQUOTED(SELECT_TYPE, "$SELECT_TYPE", [This is the type of IO loop we are using])
 764 AC_SUBST(SELECT_TYPE)
 765
 766
 767 dnl Debug-related options
 768 dnl =====================
 769
 770 AC_ARG_ENABLE(assert,
 771 AC_HELP_STRING([--enable-assert],[Enable assert(). Choose between soft(warnings) and hard(aborts the daemon)]),
 772 [assert=$enableval], [assert=no])
 773
 774 if test "$assert" = no; then
 775         AC_DEFINE(NDEBUG, 1, [Define this to disable debugging support.])
 776 elif test "$assert" = soft; then
 777         AC_DEFINE(SOFT_ASSERT, 1, [Define this to enable soft asserts.])
 778         AC_DEFINE(NDEBUG, 1, [Define this to disable debugging support.])
 779 elif test "$assert" = yes; then
 780         assert = "hard";
 781 fi
 782
 783 AC_MSG_CHECKING(if you want IO Debugging hooks)
 784 AC_ARG_ENABLE(iodebug,
 785 AC_HELP_STRING([--enable-iodebug],[Enable IO Debugging hooks]),
 786 [iodebug=$enableval], [iodebug=no])
 787
 788 if test "$iodebug" = yes; then
 789         AC_DEFINE(USE_IODEBUG_HOOKS, 1, [Define this to enable IO Debug hooks.])
 790         AC_MSG_RESULT(yes)
 791 else
 792         AC_MSG_RESULT(no)
 793 fi
 794
 795
 796 AC_MSG_CHECKING(if you want to do a profile build)
 797 AC_ARG_ENABLE(profile,
 798 AC_HELP_STRING([--enable-profile],[Enable profiling]),
 799 [profile=$enableval], [profile=no])
 800
 801 if test "$profile" = yes; then
 802         if test "$ac_cv_c_compiler_gnu" = yes; then
 803                 IRC_CFLAGS="$IRC_CFLAGS -pg"
 804                 AC_MSG_RESULT([yes, adding -pg])
 805                 AC_DEFINE(CHARYBDIS_PROFILE, 1, [Define this if you are profiling.])
 806         else
 807                 AC_MSG_RESULT([no, profile builds only work with gcc])
 808         fi
 809 else
 810         AC_MSG_RESULT(no)
 811 fi
 812
 813 AC_ARG_ENABLE(balloc,
 814 AC_HELP_STRING([--disable-balloc],[Disable the block allocator.]),
 815 [balloc=$enableval], [balloc=yes])
 816
 817 if test "$balloc" = no; then
 818         AC_DEFINE([NOBALLOC], 1, [Define to 1 if you wish to disable the block allocator.])
 819 fi
 820
 821 AC_ARG_ENABLE(small-net,
 822 AC_HELP_STRING([--enable-small-net],[Enable small network support.]),
 823 [small_net=$enableval], [small_net=no])
 824
 825 if test "$small_net" = yes; then
 826 dnl     AC_DEFINE([HASHSIZE], 4096, [Max number of buckets in hash tables.])
 827         AC_DEFINE([NICKNAMEHISTORYLENGTH], 1500, [Size of the WHOWAS array.])
 828         AC_DEFINE([CHANNEL_HEAP_SIZE], 256, [Size of the channel heap.])
 829         AC_DEFINE([BAN_HEAP_SIZE], 128, [Size of the ban heap.])
 830         AC_DEFINE([CLIENT_HEAP_SIZE], 256, [Size of the client heap.])
 831         AC_DEFINE([LCLIENT_HEAP_SIZE], 128, [Size of the local client heap.])
 832         AC_DEFINE([PCLIENT_HEAP_SIZE], 32, [Size of the pre-client heap.])
 833         AC_DEFINE([USER_HEAP_SIZE], 128, [Size of the user heap.])
 834         AC_DEFINE([DNODE_HEAP_SIZE], 256, [Size of the dlink_node heap.])
 835         AC_DEFINE([TOPIC_HEAP_SIZE], 256, [Size of the topic heap.])
 836         AC_DEFINE([LINEBUF_HEAP_SIZE], 128, [Size of the linebuf heap.])
 837         AC_DEFINE([MEMBER_HEAP_SIZE], 256, [Sizeof member heap.])
 838         AC_DEFINE([ND_HEAP_SIZE], 128, [Size of the nick delay heap.])
 839         AC_DEFINE([CONFITEM_HEAP_SIZE], 128, [Size of the confitem heap.])
 840         AC_DEFINE([MONITOR_HEAP_SIZE], 128, [Size of the monitor heap.])
 841         AC_DEFINE([FD_HEAP_SIZE], 128, [Size of fd heap.])
 842         AC_DEFINE([AWAY_HEAP_SIZE], 128, [Size of away heap.])
 843 else
 844 dnl These settings are for a large network like efnet..they will use lots of memory
 845 dnl so enable small net unless you really need this much support
 846         AC_DEFINE([NICKNAMEHISTORYLENGTH], 15000, [Size of the WHOWAS array.])
 847         AC_DEFINE([CHANNEL_HEAP_SIZE], 8192, [Size of the channel heap.])
 848         AC_DEFINE([BAN_HEAP_SIZE], 4096, [Size of the ban heap.])
 849         AC_DEFINE([CLIENT_HEAP_SIZE], 8192, [Size of the client heap.])
 850         AC_DEFINE([LCLIENT_HEAP_SIZE], 1024, [Size of the local client heap.])
 851         AC_DEFINE([PCLIENT_HEAP_SIZE], 256, [Size of the pre-client heap.])
 852         AC_DEFINE([USER_HEAP_SIZE], 8192, [Size of the user heap.])
 853         AC_DEFINE([DNODE_HEAP_SIZE], 8192, [Size of the dlink_node heap.])
 854         AC_DEFINE([TOPIC_HEAP_SIZE], 4096, [Size of the topic heap.])
 855         AC_DEFINE([LINEBUF_HEAP_SIZE], 2048, [Size of the linebuf heap.])
 856         AC_DEFINE([MEMBER_HEAP_SIZE], 32768, [Sizeof member heap.])
 857         AC_DEFINE([ND_HEAP_SIZE], 512, [Size of the nick delay heap.])
 858         AC_DEFINE([CONFITEM_HEAP_SIZE], 256, [Size of the confitem heap.])
 859         AC_DEFINE([MONITOR_HEAP_SIZE], 1024, [Size of the monitor heap.])
 860         AC_DEFINE([FD_HEAP_SIZE], 1024, [Size of fd heap.])
 861         AC_DEFINE([AWAY_HEAP_SIZE], 512, [Size of away heap.])
 862 fi
 863
 864 AC_ARG_WITH(nicklen,
 865 AC_HELP_STRING([--with-nicklen=LENGTH],[Set the nick length to LENGTH (default 15, max 50)]),
 866 [
 867   if test $withval -ge 50; then
 868         NICKLEN=50
 869         AC_MSG_WARN([NICKLEN has a hard limit of 50. Setting NICKLEN=50])
 870   else
 871         NICKLEN="$withval"
 872   fi
 873 ], [NICKLEN=15])
 874
 875 AC_ARG_WITH(topiclen,
 876 AC_HELP_STRING([--with-topiclen=NUMBER],[Set the max topic length to NUMBER (default 390, max 390)]),
 877 [
 878  if test $withval -ge 390; then
 879         TOPICLEN=390
 880         AC_MSG_WARN([TOPICLEN has a hard limit of 390. Setting TOPICLEN=390])
 881  else
 882         TOPICLEN=$withval
 883  fi
 884 ], [TOPICLEN=390])
 885
 886 AC_DEFINE_UNQUOTED(TOPICLEN, ${TOPICLEN}, [Maximum topic length (<=390)])
 887 AC_DEFINE_UNQUOTED(NICKLEN, (${NICKLEN}+1), [Nickname length])
 888
 889 shared_modules="yes"
 890 dnl Some first-stage sanity checks.
 891 if test "$shared_modules" = yes; then
 892         dnl TenDRA's cc is called tcc too.
 893         if test "$CC" = tcc -a "$TenDRA" = "no"; then
 894                 AC_MSG_WARN([disabling shared modules: Tiny C Compiler can't create PIC])
 895                 shared_modules="no"
 896         fi
 897 fi
 898
 899 dnl Second stage: check for functions and headers.
 900 if test "$shared_modules" = yes; then
 901         DYNLINK_C=dynlink.c
 902         AC_CHECK_HEADERS(dlfcn.h)
 903         AC_SEARCH_LIBS(shl_load, dld,
 904         [
 905           AC_DEFINE(HAVE_SHL_LOAD, 1, [Define if the shl_load function is available.])
 906           SUFFIX=".sl"
 907           MOD_TARGET=hpux_shared
 908           SEDOBJ="s/\.o/.sl/g"
 909         ],
 910         dnl !shl_load:
 911         [
 912           dnl standard dlopen
 913           AC_SEARCH_LIBS(dlopen, [dl c_r],
 914           [
 915             AC_DEFINE(HAVE_DLOPEN, 1, [Define if the dlopen function is available.])
 916             SUFFIX=".so"
 917             MOD_TARGET=shared_modules
 918             SEDOBJ="s/\.o/.so/g"
 919             if test "$AppleGCC" = yes; then
 920               AC_CHECK_HEADERS([mach-o/dyld.h])
 921             fi
 922             AC_CHECK_FUNC(dlsym, ,
 923             [
 924               AC_MSG_WARN([dlsym is not available, shared modules disabled])
 925               shared_modules=no
 926             ])
 927             AC_CHECK_FUNCS(dlfunc)
 928           ],
 929           [
 930             shared_modules=no
 931           ])
 932         ])
 933 fi
 934
 935 AC_DEFINE_UNQUOTED(SHARED_SUFFIX, "$SUFFIX", [Suffix for shared libraries on this platform.])
 936
 937 dnl Third stage - wrangling the linker.
 938 if test "$shared_modules" = yes; then
 939         # The GNU linker requires the -export-dynamic option to make
 940         # all symbols visible in the dynamic symbol table.
 941         hold_ldflags=$LDFLAGS
 942         AC_MSG_CHECKING(for the ld -export-dynamic flag)
 943         LDFLAGS="${LDFLAGS} -Wl,-export-dynamic -Werror"
 944         AC_LINK_IFELSE(AC_LANG_PROGRAM([],[int i;]), found=yes, found=no)
 945         LDFLAGS=$hold_ldflags
 946
 947         if expr "`uname -s`" : ^IRIX >/dev/null 2>&1; then
 948                 found="no, IRIX ld uses -B,dynamic"
 949                 LDFLAGS="${LDFLAGS} -Wl,-B,dynamic"
 950         fi
 951
 952         if expr "`uname -s`" : ^AIX >/dev/null 2>&1; then
 953                 found="no, AIX ld uses -G -brtl"
 954                 LDFLAGS="${LDFLAGS} -Wl,-G,-brtl"
 955         fi
 956
 957         AC_MSG_RESULT($found)
 958
 959         if test "$found" = yes; then
 960                 LDFLAGS="${LDFLAGS} -Wl,-export-dynamic"
 961         fi
 962
 963         AC_MSG_CHECKING(for compiler option to produce PIC)
 964         dnl The order should be here to check for groups of compilers,
 965         dnl then for odd compilers, then if no PICFLAGS were set up,
 966         dnl check for GCC and set defaults, or else error. -jmallett
 967         if test "$SGS" = "yes"; then
 968                 AC_MSG_RESULT([SVR4 SGS interfaces: -KPIC -DPIC -G])
 969                 PICFLAGS="-KPIC -DPIC -G"
 970         fi
 971
 972         if test "$AppleGCC" = "yes"; then
 973                 AC_MSG_RESULT([Darwin Mach-O bundles: -fno-common -bundle -flat_namespace -undefined suppress])
 974                 PICFLAGS="-fno-common -bundle -flat_namespace -undefined suppress"
 975         fi
 976         dnl Please note, that on HPUX two different stages of module compilation occurs, since
 977         dnl while compiling modules, the compiler does not allow you to give arguments
 978         dnl to the linker. (I did not design this)
 979         dnl So we need -c in the first stage of module compilation.
 980         dnl In the second stage, we link the modules via ld -b.
 981         dnl Additionally, HPUX does not like -export-dynamic, it likes -E instead.
 982         dnl -TimeMr14C
 983         if test "$HPUX" = "yes" -a "$CC" != gcc; then
 984                 AC_MSG_RESULT(HP-UX cc: +z -r -q -n)
 985                 PICFLAGS="+z -r -q -n -c"
 986                 AC_MSG_CHECKING([if +ESfic is required on this platform])
 987
 988                 if expr "`$CC +ESfic 2>&1`" : ".*neither supported.*" >/dev/null; then
 989                         AC_MSG_RESULT(no)
 990                 else
 991                         AC_MSG_RESULT(yes)
 992                         PICFLAGS="$PICFLAGS +ESfic"
 993                 fi
 994
 995                 LDFLAGS="${LDFLAGS} -Wl,-E"
 996         fi
 997         if test "$Tru" = yes -a "$CC" != gcc; then
 998                 AC_MSG_RESULT([Tru64: -shared -expect_unresolved '*'])
 999                 PICFLAGS="-shared -expect_unresolved '*' "
1000                 LDFLAGS="-call_shared"
1001         fi
1002         if test -z "$PICFLAGS"; then
1003                 if test "$ac_cv_c_compiler_gnu" = "yes"; then
1004                         AC_MSG_RESULT(gcc: -fPIC -DPIC -shared)
1005                         PICFLAGS="-fPIC -DPIC -shared"
1006                 else
1007                         AC_MSG_RESULT(no)
1008                         shared_modules=no
1009                 fi
1010         fi
1011 fi
1012
1013 # rpath, for finding libratbox.so at run time
1014 hold_ldflags=$LDFLAGS
1015 AC_MSG_CHECKING(for the ld -rpath flag)
1016 LDFLAGS="${LDFLAGS} -Wl,-rpath=${libdir}"
1017 AC_LINK_IFELSE(AC_LANG_PROGRAM([],[int i;]), found=yes, found=no)
1018 LDFLAGS=$hold_ldflags
1019 AC_MSG_RESULT($found)
1020 if test "$found" = yes; then
1021         LDFLAGS="${LDFLAGS} -Wl,-rpath=\${libdir}"
1022 fi
1023
1024 # This must be down here, or it will mess up checks like the ones
1025 # for -Wl,-export-dynamic
1026 # -- jilles
1027 CWARNS=""
1028 AC_ARG_ENABLE(warnings,
1029 AC_HELP_STRING([--enable-warnings],[Enable all sorts of warnings for debugging.]),
1030 [
1031 IRC_CFLAGS="$IRC_CFLAGS -O0"
1032 CFLAGS="$IRC_CFLAGS"
1033
1034 CHARYBDIS_C_GCC_TRY_FLAGS([-Wall], charybdis_cv_c_gcc_w_all)
1035 CHARYBDIS_C_GCC_TRY_FLAGS([-Wpointer-arith], charybdis_cv_c_gcc_w_pointer_arith)
1036 CHARYBDIS_C_GCC_TRY_FLAGS([-Wimplicit -Wnested-externs], charybdis_cv_c_gcc_w_implicit)
1037 CHARYBDIS_C_GCC_TRY_FLAGS([-Wcast-align], charybdis_cv_c_gcc_w_cast_align)
1038 CHARYBDIS_C_GCC_TRY_FLAGS([-Wcast-qual], charybdis_cv_c_gcc_w_cast_qual)
1039 CHARYBDIS_C_GCC_TRY_FLAGS([-Wwrite-strings], charybdis_cv_c_gcc_w_write_strings)
1040 CHARYBDIS_C_GCC_TRY_FLAGS([-Werror-implicit-function-declaration], charybdis_cv_c_gcc_w_error_implicit_function_declaration)
1041 CHARYBDIS_C_GCC_TRY_FLAGS([-Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations], charybdis_cv_c_gcc_prototypes)
1042 CHARYBDIS_C_GCC_TRY_FLAGS([-Wparenthesis], charybdis_cv_c_gcc_parenthesis)
1043 CHARYBDIS_C_GCC_TRY_FLAGS([-W -Wno-unused], charybdis_cv_c_gcc_w)
1044 CHARYBDIS_C_GCC_TRY_FLAGS([-Wextra], charybdis_cv_c_gcc_w_extra)
1045 CHARYBDIS_C_GCC_TRY_FLAGS([-Wshadow], charybdis_cv_c_gcc_w_shadow)
1046 CHARYBDIS_C_GCC_TRY_FLAGS([-Wmissing-noreturn], charybdis_cv_c_gcc_w_missing_noreturn)
1047 CHARYBDIS_C_GCC_TRY_FLAGS([-Wundef], charybdis_cv_c_gcc_w_undef)
1048 CHARYBDIS_C_GCC_TRY_FLAGS([-Wpacked], charybdis_cv_c_gcc_w_packed)
1049 CHARYBDIS_C_GCC_TRY_FLAGS([-Wnested-externs], charybdis_cv_c_gcc_w_nested_externs)
1050 CHARYBDIS_C_GCC_TRY_FLAGS([-Wbad-function-cast], charybdis_cv_c_gcc_w_bad_function_cast)
1051 CHARYBDIS_C_GCC_TRY_FLAGS([-Wunused-function -Wunused-label -Wunused-value -Wunused-variable], charybdis_cv_c_gcc_w_unused)
1052 CHARYBDIS_C_GCC_TRY_FLAGS([-Wredundant-decls], charybdis_cv_c_gcc_w_redundant_decls)
1053 CHARYBDIS_C_GCC_TRY_FLAGS([-Wfloat-equal], charybdis_cv_c_gcc_w_float_equal)
1054 CHARYBDIS_C_GCC_TRY_FLAGS([-Wformat -Wformat-y2k -Wformat-security], charybdis_cv_c_gcc_w_format)
1055 CHARYBDIS_C_GCC_TRY_FLAGS([-pedantic], charybdis_cv_c_gcc_pedantic)
1056
1057 IRC_CFLAGS="$CFLAGS"
1058 ],[])
1059
1060 if test "$shared_modules" = no; then
1061         DYNLINK_C=""
1062         MOD_TARGET="libmodules.a"
1063         MODULES_LIBS="../modules/libmodules.a"
1064         SEDOBJ=""
1065         AC_DEFINE(STATIC_MODULES, 1, [Define to 1 if dynamic modules can't be used.])
1066         AC_MSG_WARN([shared module support has been disabled!])
1067 fi
1068
1069 dnl Stage 5 - underscores in front of symbol names.
1070 if test "$shared_modules" = yes; then
1071
1072         AC_CHECK_FUNC(nlist,,
1073                 AC_CHECK_LIB(dl, nlist, nlist_lib="-ldl",
1074                         AC_CHECK_LIB(elf, nlist, nlist_lib="-lelf",)
1075                 )
1076         )
1077
1078         dnl We need to find out whether underscores are appended to symbol
1079         dnl names in executable files.  First, though, we need to see
1080         dnl where nlist.h is hiding.
1081         AC_CHECK_HEADER(libelf/nlist.h, [ nlist_h="libelf/nlist.h" ], )
1082         AC_CHECK_HEADER(elf/nlist.h, [ nlist_h="elf/nlist.h" ], )
1083         AC_CHECK_HEADER(nlist.h, [ nlist_h="nlist.h" ], )
1084         if test x"$nlist_h" = "x"; then
1085                 AC_DEFINE_UNQUOTED(SYMBOL_PREFIX, "", [String containing extra underscores prepended to symbols loaded from modules.])
1086         else
1087                 AC_MSG_CHECKING(for extra underscores prepended to symbol names)
1088                 AC_CACHE_VAL(symbol_underscores,
1089                 [
1090 cat << EOF > conftest.c
1091 #include <$nlist_h>
1092 #include <stdio.h>
1093 #include <stdlib.h>
1094 void _modinit(void);
1095 int main(int argc, char *argv[[]]) {
1096         int i;
1097         struct nlist nl[[5]];
1098
1099         /* fill the names in this way, so it'll work almost everywhere */
1100         nl[[0]].n_name = "_modinit";
1101         nl[[1]].n_name = "__modinit";
1102         nl[[2]].n_name = "___modinit";
1103         nl[[3]].n_name = "____modinit";
1104         nl[[0]].n_value = nl[[1]].n_value = nl[[2]].n_value = nl[[3]].n_value = nl[[4]].n_name = NULL;
1105
1106         if(argc < 2 || (nlist(argv[[1]], nl)) == -1) exit(-1);
1107         for(i = 0; i < 4; i++) {
1108                 if(nl[[i]].n_value != NULL)
1109                 {
1110                         int j;
1111                         for(j = 0; j < i; j++)
1112                                 printf("_");
1113                         exit(i);
1114                 }
1115         }
1116         exit(-1);
1117 }
1118 void _modinit(void) { return; }
1119 EOF
1120                 $CC $CPPFLAGS $IRC_CFLAGS -o conftest conftest.c $nlist_lib >/dev/null 2>&1
1121                 symbol_underscores=`./conftest conftest`
1122                 AC_MSG_RESULT($symbol_underscores)
1123                 $RM -f conftest conftest.c
1124                 ])
1125                 AC_DEFINE_UNQUOTED(SYMBOL_PREFIX, "${symbol_underscores}", [String containing extra underscores prepended to symbols loaded from modules.])
1126         fi
1127 fi
1128
1129 IRC_CFLAGS="$IRC_CFLAGS $CWARNS"
1130
1131 AC_SUBST(MODULES_LIBS)
1132 AC_SUBST(MOD_TARGET)
1133
1134 AC_SUBST(SSL_SRCS_ENABLE)
1135 AC_SUBST(SSL_INCLUDES)
1136 AC_SUBST(SSL_LIBS)
1137
1138 AC_SUBST(LDFLAGS)
1139 AC_SUBST(PICFLAGS)
1140 AC_SUBST(IRC_CFLAGS)
1141 AC_SUBST(SEDOBJ)
1142
1143
1144 if test "$prefix" = "NONE"; then
1145         AC_DEFINE_UNQUOTED(IRCD_PREFIX, "$ac_default_prefix", [Prefix where the ircd is installed.])
1146
1147 else
1148
1149 dnl Don't get bitten by Cygwin's stupidity if the user specified
1150 dnl a custom prefix with a trailing slash
1151
1152         prefix=`echo $prefix | sed 's/\/$//'`
1153         AC_DEFINE_UNQUOTED(IRCD_PREFIX, "$prefix", [Prefix where the ircd is installed.])
1154
1155 fi
1156
1157 AC_CONFIG_FILES(                        \
1158         Makefile                        \
1159         ssld/Makefile                   \
1160         extensions/Makefile             \
1161         unsupported/Makefile            \
1162         src/Makefile                    \
1163         modules/Makefile                \
1164         tools/Makefile                  \
1165         doc/Makefile                    \
1166         help/Makefile                   \
1167 )
1168
1169 AC_OUTPUT
1170
1171 if test "$cf_openssl_version_ok" = yes; then
1172         openssl="yes"
1173 else
1174         openssl="no"
1175 fi
1176
1177 if test "$shared_modules" = yes; then
1178         modules=shared
1179 else
1180         modules=static
1181 fi
1182
1183 echo "
1184 Configuration:
1185         Install directory  : $prefix
1186
1187         Ziplinks           : $zlib
1188         OpenSSL            : $openssl
1189         Socket Engine      : $SELECT_TYPE
1190         Small network      : $small_net
1191         Block allocator    : $balloc
1192
1193         Nickname length    : $NICKLEN
1194         Topic length       : $TOPICLEN
1195
1196 Use (g)make to compile Charybdis, then (g)make install to install it.
1197 "