configure.in

   1 dnl Process this file with autoconf to produce a configure script.
   2 dnl rewritten for my own personal sanity, and for more extensive
   3 dnl checks - feb04 -epi
   4
   5 AC_INIT
   6
   7 AC_CONFIG_HEADER(include/setup.h)
   8
   9 PACKAGE=bahamut-release
  10 VERSION=1.8
  11 AC_SUBST(PACKAGE)
  12 AC_SUBST(VERSION)
  13
  14 # autoheader templates
  15
  16 AH_TEMPLATE([BROKEN_FD_SETSIZE],[If on a system with a broken FD_SETSIZE])
  17 AH_TEMPLATE([HAVE_ENCRYPTION_ON],[If we support encryption])
  18 AH_TEMPLATE([HAVE_MINMAX],[If we have the MIN and MAX macros])
  19 AH_TEMPLATE([OS_SOLARIS2],[If we're running on Solaris])
  20 AH_TEMPLATE([OS_SOLARIS],[Not quite sure why we have two of these])
  21 AH_TEMPLATE([SYS_ERRLIST_DECLARED],[If the sys_errlist array is defined])
  22 AH_TEMPLATE([USE_HOOKMODULES],[Do we support loadable modules])
  23 AH_TEMPLATE([MAXCONNECTIONS],[Maximum Connections we allow])
  24 AH_TEMPLATE([NEED_EPOLL_DEFS],[epoll behavior])
  25 AH_TEMPLATE([AIX],[AIX support])
  26 AH_TEMPLATE([WRITEV_IOV],[Maxmimum number of iovecs supported by writev()])
  27
  28 dnl Put our options of here for ease of reading.
  29
  30 AC_ARG_ENABLE(hookmodules,
  31 [  --disable-hookmodules   disable support for loadable hook modules],,
  32 [ check_hmodules="yes" ])
  33
  34 AC_ARG_ENABLE(openssl,
  35 [  --enable-openssl[=DIR]       Enable OpenSSL support (DIR optional).
  36   --disable-openssl            Disable OpenSSL support. ],
  37 [ cf_enable_openssl=$enableval ],
  38 [ cf_enable_openssl="auto" ])
  39
  40 AC_ARG_WITH(socketengine,
  41 [  --with-socketengine=TYPE       Set the socketengine type.  Choices are:
  42                                 kqueue poll select ],
  43 [ check_sengine=$withval ],
  44 [ check_sengine="yes" ])
  45 AC_ARG_WITH(maxconnections,
  46 [  --with-maxconnections=NUMBER   Set the maximum number of sockets.],
  47 [ check_maxconnections=$withval ],
  48 [ check_maxconnections="auto" ])
  49
  50 dnl -------------------------------------------------------------------
  51 # ===========================================================================
  52 #    http://www.gnu.org/software/autoconf-archive/ax_cflags_warn_all.html
  53 # ===========================================================================
  54 #
  55 # SYNOPSIS
  56 #
  57 #   AX_CFLAGS_WARN_ALL [(shellvar [,default, [A/NA]])]
  58 #
  59 # DESCRIPTION
  60 #
  61 #   Try to find a compiler option that enables most reasonable warnings.
  62 #
  63 #   For the GNU CC compiler it will be -Wall (and -ansi -pedantic) The
  64 #   result is added to the shellvar being CFLAGS by default.
  65 #
  66 #   Currently this macro knows about GCC, Solaris C compiler, Digital Unix C
  67 #   compiler, C for AIX Compiler, HP-UX C compiler, IRIX C compiler, NEC
  68 #   SX-5 (Super-UX 10) C compiler, and Cray J90 (Unicos 10.0.0.8) C
  69 #   compiler.
  70 #
  71 #    - $1 shell-variable-to-add-to : CFLAGS
  72 #    - $2 add-value-if-not-found : nothing
  73 #    - $3 action-if-found : add value to shellvariable
  74 #    - $4 action-if-not-found : nothing
  75 #
  76 # LICENSE
  77 #
  78 #   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
  79 #
  80 #   This program is free software; you can redistribute it and/or modify it
  81 #   under the terms of the GNU General Public License as published by the
  82 #   Free Software Foundation; either version 2 of the License, or (at your
  83 #   option) any later version.
  84 #
  85 #   This program is distributed in the hope that it will be useful, but
  86 #   WITHOUT ANY WARRANTY; without even the implied warranty of
  87 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
  88 #   Public License for more details.
  89 #
  90 #   You should have received a copy of the GNU General Public License along
  91 #   with this program. If not, see <http://www.gnu.org/licenses/>.
  92 #
  93 #   As a special exception, the respective Autoconf Macro's copyright owner
  94 #   gives unlimited permission to copy, distribute and modify the configure
  95 #   scripts that are the output of Autoconf when processing the Macro. You
  96 #   need not follow the terms of the GNU General Public License when using
  97 #   or distributing such scripts, even though portions of the text of the
  98 #   Macro appear in them. The GNU General Public License (GPL) does govern
  99 #   all other use of the material that constitutes the Autoconf Macro.
 100 #
 101 #   This special exception to the GPL applies to versions of the Autoconf
 102 #   Macro released by the Autoconf Archive. When you make and distribute a
 103 #   modified version of the Autoconf Macro, you may extend this special
 104 #   exception to the GPL to apply to your modified version as well.
 105
 106 AC_DEFUN([AX_CFLAGS_WARN_ALL],[dnl
 107 AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
 108 AS_VAR_PUSHDEF([VAR],[ac_cv_cflags_warn_all])dnl
 109 AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for maximum warnings],
 110 VAR,[VAR="no, unknown"
 111  AC_LANG_PUSH([C])
 112  ac_save_[]FLAGS="$[]FLAGS"
 113 for ac_arg dnl
 114 in "-pedantic  % -Wall"       dnl   GCC
 115    "-xstrconst % -v"          dnl Solaris C
 116    "-std1      % -verbose -w0 -warnprotos" dnl Digital Unix
 117    "-qlanglvl=ansi % -qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd" dnl AIX
 118    "-ansi -ansiE % -fullwarn" dnl IRIX
 119    "+ESlit     % +w1"         dnl HP-UX C
 120    "-Xc        % -pvctl[,]fullmsg" dnl NEC SX-5 (Super-UX 10)
 121    "-h conform % -h msglevel 2" dnl Cray C (Unicos)
 122    #
 123 do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
 124    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[return 0;]])],[VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break],[])
 125 done
 126  FLAGS="$ac_save_[]FLAGS"
 127  AC_LANG_POP([])
 128 ])
 129 case ".$VAR" in
 130      .ok|.ok,*) m4_ifvaln($3,$3) ;;
 131    .|.no|.no,*) m4_ifvaln($4,$4,[m4_ifval($2,[
 132         AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])
 133                       m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])]) ;;
 134    *) m4_ifvaln($3,$3,[
 135    if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
 136    then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
 137    else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
 138                       m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
 139    fi ]) ;;
 140 esac
 141 AS_VAR_POPDEF([VAR])dnl
 142 AS_VAR_POPDEF([FLAGS])dnl
 143 ])
 144
 145 dnl the only difference - the LANG selection... and the default FLAGS
 146
 147 AC_DEFUN([AX_CXXFLAGS_WARN_ALL],[dnl
 148 AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
 149 AS_VAR_PUSHDEF([VAR],[ax_cv_cxxflags_warn_all])dnl
 150 AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for maximum warnings],
 151 VAR,[VAR="no, unknown"
 152  AC_LANG_PUSH([C++])
 153  ac_save_[]FLAGS="$[]FLAGS"
 154 for ac_arg dnl
 155 in "-pedantic  % -Wall"       dnl   GCC
 156    "-xstrconst % -v"          dnl Solaris C
 157    "-std1      % -verbose -w0 -warnprotos" dnl Digital Unix
 158    "-qlanglvl=ansi % -qsrcmsg -qinfo=all:noppt:noppc:noobs:nocnd" dnl AIX
 159    "-ansi -ansiE % -fullwarn" dnl IRIX
 160    "+ESlit     % +w1"         dnl HP-UX C
 161    "-Xc        % -pvctl[,]fullmsg" dnl NEC SX-5 (Super-UX 10)
 162    "-h conform % -h msglevel 2" dnl Cray C (Unicos)
 163    #
 164 do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
 165    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[return 0;]])],[VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break],[])
 166 done
 167  FLAGS="$ac_save_[]FLAGS"
 168  AC_LANG_POP([])
 169 ])
 170 case ".$VAR" in
 171      .ok|.ok,*) m4_ifvaln($3,$3) ;;
 172    .|.no|.no,*) m4_ifvaln($4,$4,[m4_ifval($2,[
 173         AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])
 174                       m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $2"])]) ;;
 175    *) m4_ifvaln($3,$3,[
 176    if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
 177    then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
 178    else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
 179                       m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
 180    fi ]) ;;
 181 esac
 182 AS_VAR_POPDEF([VAR])dnl
 183 AS_VAR_POPDEF([FLAGS])dnl
 184 ])
 185
 186 dnl  implementation tactics:
 187 dnl   the for-argument contains a list of options. The first part of
 188 dnl   these does only exist to detect the compiler - usually it is
 189 dnl   a global option to enable -ansi or -extrawarnings. All other
 190 dnl   compilers will fail about it. That was needed since a lot of
 191 dnl   compilers will give false positives for some option-syntax
 192 dnl   like -Woption or -Xoption as they think of it is a pass-through
 193 dnl   to later compile stages or something. The "%" is used as a
 194 dnl   delimimiter. A non-option comment can be given after "%%" marks
 195 dnl   which will be shown but not added to the respective C/CXXFLAGS.
 196
 197 dnl -------------------------------------------------------------------
 198
 199 # ===========================================================================
 200 #  https://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
 201 # ===========================================================================
 202 #
 203 # SYNOPSIS
 204 #
 205 #   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
 206 #
 207 # DESCRIPTION
 208 #
 209 #   Check whether the given FLAG works with the current language's compiler
 210 #   or gives an error.  (Warnings, however, are ignored)
 211 #
 212 #   ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
 213 #   success/failure.
 214 #
 215 #   If EXTRA-FLAGS is defined, it is added to the current language's default
 216 #   flags (e.g. CFLAGS) when the check is done.  The check is thus made with
 217 #   the flags: "CFLAGS EXTRA-FLAGS FLAG".  This can for example be used to
 218 #   force the compiler to issue an error when a bad flag is given.
 219 #
 220 #   INPUT gives an alternative input source to AC_COMPILE_IFELSE.
 221 #
 222 #   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
 223 #   macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
 224 #
 225 # LICENSE
 226 #
 227 #   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
 228 #   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
 229 #
 230 #   Copying and distribution of this file, with or without modification, are
 231 #   permitted in any medium without royalty provided the copyright notice
 232 #   and this notice are preserved.  This file is offered as-is, without any
 233 #   warranty.
 234
 235 AC_DEFUN([AX_CHECK_COMPILE_FLAG],
 236 [AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
 237 AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
 238 AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
 239   ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
 240   _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
 241   AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
 242     [AS_VAR_SET(CACHEVAR,[yes])],
 243     [AS_VAR_SET(CACHEVAR,[no])])
 244   _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
 245 AS_VAR_IF(CACHEVAR,yes,
 246   [m4_default([$2], :)],
 247   [m4_default([$3], :)])
 248 AS_VAR_POPDEF([CACHEVAR])dnl
 249 ])dnl AX_CHECK_COMPILE_FLAGS
 250
 251 dnl -------------------------------------------------------------------
 252
 253 # ===========================================================================
 254 #       http://www.gnu.org/software/autoconf-archive/ax_have_epoll.html
 255 # ===========================================================================
 256 #
 257 # SYNOPSIS
 258 #
 259 #   AX_HAVE_EPOLL([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
 260 #   AX_HAVE_EPOLL_PWAIT([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
 261 #
 262 # DESCRIPTION
 263 #
 264 #   This macro determines whether the system supports the epoll I/O event
 265 #   interface. A neat usage example would be:
 266 #
 267 #     AX_HAVE_EPOLL(
 268 #       [AX_CONFIG_FEATURE_ENABLE(epoll)],
 269 #       [AX_CONFIG_FEATURE_DISABLE(epoll)])
 270 #     AX_CONFIG_FEATURE(
 271 #       [epoll], [This platform supports epoll(7)],
 272 #       [HAVE_EPOLL], [This platform supports epoll(7).])
 273 #
 274 #   The epoll interface was added to the Linux kernel in version 2.5.45, and
 275 #   the macro verifies that a kernel newer than this is installed. This
 276 #   check is somewhat unreliable if <linux/version.h> doesn't match the
 277 #   running kernel, but it is necessary regardless, because glibc comes with
 278 #   stubs for the epoll_create(), epoll_wait(), etc. that allow programs to
 279 #   compile and link even if the kernel is too old; the problem would then
 280 #   be detected only at runtime.
 281 #
 282 #   Linux kernel version 2.6.19 adds the epoll_pwait() call in addition to
 283 #   epoll_wait(). The availability of that function can be tested with the
 284 #   second macro. Generally speaking, it is safe to assume that
 285 #   AX_HAVE_EPOLL would succeed if AX_HAVE_EPOLL_PWAIT has, but not the
 286 #   other way round.
 287 #
 288 # LICENSE
 289 #
 290 #   Copyright (c) 2008 Peter Simons <simons@cryp.to>
 291 #
 292 #   Copying and distribution of this file, with or without modification, are
 293 #   permitted in any medium without royalty provided the copyright notice
 294 #   and this notice are preserved. This file is offered as-is, without any
 295 #   warranty.
 296
 297 AC_DEFUN([AX_HAVE_EPOLL], [dnl
 298   ax_have_epoll_cppflags="${CPPFLAGS}"
 299   AC_CHECK_HEADER([linux/version.h], [CPPFLAGS="${CPPFLAGS} -DHAVE_LINUX_VERSION_H"])
 300   AC_MSG_CHECKING([for Linux epoll(7) interface])
 301   AC_CACHE_VAL([ax_cv_have_epoll], [dnl
 302     AC_LINK_IFELSE([dnl
 303       AC_LANG_PROGRAM([dnl
 304 #include <sys/epoll.h>
 305 #ifdef HAVE_LINUX_VERSION_H
 306 #  include <linux/version.h>
 307 #  if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,45)
 308 #    error linux kernel version is too old to have epoll
 309 #  endif
 310 #endif
 311 ], [dnl
 312 int fd, rc;
 313 struct epoll_event ev;
 314 fd = epoll_create(128);
 315 rc = epoll_wait(fd, &ev, 1, 0);])],
 316       [ax_cv_have_epoll=yes],
 317       [ax_cv_have_epoll=no])])
 318   CPPFLAGS="${ax_have_epoll_cppflags}"
 319   AS_IF([test "${ax_cv_have_epoll}" = "yes"],
 320     [AC_MSG_RESULT([yes])
 321 $1],[AC_MSG_RESULT([no])
 322 $2])
 323 ])dnl
 324
 325 AC_DEFUN([AX_HAVE_EPOLL_PWAIT], [dnl
 326   ax_have_epoll_cppflags="${CPPFLAGS}"
 327   AC_CHECK_HEADER([linux/version.h],
 328     [CPPFLAGS="${CPPFLAGS} -DHAVE_LINUX_VERSION_H"])
 329   AC_MSG_CHECKING([for Linux epoll(7) interface with signals extension])
 330   AC_CACHE_VAL([ax_cv_have_epoll_pwait], [dnl
 331     AC_LINK_IFELSE([dnl
 332       AC_LANG_PROGRAM([dnl
 333 #ifdef HAVE_LINUX_VERSION_H
 334 #  include <linux/version.h>
 335 #  if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
 336 #    error linux kernel version is too old to have epoll_pwait
 337 #  endif
 338 #endif
 339 #include <sys/epoll.h>
 340 #include <signal.h>
 341 ], [dnl
 342 int fd, rc;
 343 struct epoll_event ev;
 344 fd = epoll_create(128);
 345 rc = epoll_wait(fd, &ev, 1, 0);
 346 rc = epoll_pwait(fd, &ev, 1, 0, (sigset_t const *)(0));])],
 347       [ax_cv_have_epoll_pwait=yes],
 348       [ax_cv_have_epoll_pwait=no])])
 349   CPPFLAGS="${ax_have_epoll_cppflags}"
 350   AS_IF([test "${ax_cv_have_epoll_pwait}" = "yes"],
 351     [AC_MSG_RESULT([yes])
 352 $1],[AC_MSG_RESULT([no])
 353 $2])
 354 ])dnl
 355
 356
 357 dnl -------------------------------------------------
 358
 359 dnl Checks for programs.
 360 AC_PROG_CC
 361 AX_CFLAGS_WARN_ALL
 362 AX_CHECK_COMPILE_FLAG([-fno-strict-aliasing], [CFLAGS="$CFLAGS -fno-strict-aliasing"])
 363 AX_CHECK_COMPILE_FLAG([-fgnu89-inline], [CFLAGS="$CFLAGS -fgnu89-inline"])
 364 AC_CANONICAL_TARGET
 365 AC_SEARCH_LIBS([strerror],[cposix])
 366 AC_PROG_MAKE_SET
 367 AC_PATH_PROG(RM, rm)
 368 AC_PATH_PROG(CP, cp)
 369 AC_PATH_PROG(MV, mv)
 370 AC_PATH_PROG(SED, sed)
 371 AC_PROG_INSTALL
 372 AC_C_INLINE
 373
 374 dnl Checks for libraries.
 375 dnl Replace `main' with a function in -lnsl:
 376 AC_CHECK_LIB(nsl, gethostbyname)
 377 AC_CHECK_FUNC(res_mkquery,, AC_CHECK_LIB(resolv, res_mkquery))
 378 AC_CHECK_FUNC(__res_mkquery,, AC_CHECK_LIB(resolv, __res_mkquery))
 379 AC_CHECK_LIB(socket, socket, zlib)
 380 AC_CHECK_FUNC(crypt,, AC_CHECK_LIB(descrypt, crypt,,AC_CHECK_LIB(crypt, crypt,,)))
 381
 382 dnl Checks for header files.
 383 AC_HEADER_STDC
 384 AC_CHECK_HEADERS([fcntl.h limits.h malloc.h netdb.h netinet/in.h stddef.h])
 385 AC_CHECK_HEADERS([stdlib.h string.h strings.h sys/file.h sys/ioctl.h])
 386 AC_CHECK_HEADERS([sys/param.h sys/socket.h sys/time.h syslog.h unistd.h])
 387 AC_CHECK_HEADERS([zlib.h])
 388 AC_CHECK_HEADERS(inttypes.h sys/resource.h errno.h stdlib.h stddef.h getopt.h)
 389 AC_MSG_CHECKING(MIN and MAX definition)
 390 AC_EGREP_CPP(yes,
 391 [
 392 #if defined( HAVE_SYS_PARAM_H )
 393 #include <sys/param.h>
 394 #ifdef MIN
 395   yes
 396 #endif
 397 #endif
 398 ], AC_DEFINE(HAVE_MINMAX) AC_MSG_RESULT(yes), AC_MSG_RESULT(no))
 399
 400
 401 dnl Checks for library functions.
 402 AC_PROG_GCC_TRADITIONAL
 403 AC_CHECK_FUNCS([alarm dup2 gethostbyname gethostname getpass gettimeofday])
 404 AC_CHECK_FUNCS([inet_ntoa isascii memmove memset munmap setenv socket])
 405 AC_CHECK_FUNCS([strcasecmp strchr strdup strerror strncasecmp strrchr strtol])
 406 AC_CHECK_FUNCS([strtoul index strerror strtoken strtok inet_addr inet_netof])
 407 AC_CHECK_FUNCS([inet_aton gettimeofday lrand48 sigaction bzero bcmp bcopy])
 408 AC_CHECK_FUNCS([dn_skipname __dn_skipname getrusage times break])
 409
 410 dnl check for various OSes
 411
 412 case "$target" in
 413     *-solaris2*)
 414         solaris2="yes"
 415         AC_DEFINE(OS_SOLARIS2)
 416         AC_DEFINE(OS_SOLARIS)
 417         AC_DEFINE_UNQUOTED(WRITEV_IOV, 16)
 418         ;;
 419     *-freebsd*)
 420         freebsd="yes"
 421         AC_DEFINE_UNQUOTED(WRITEV_IOV, 32)
 422         ;;
 423     *-netbsd*)
 424         AC_DEFINE_UNQUOTED(WRITEV_IOV, 32)
 425         ;;
 426     *-openbsd*)
 427         AC_DEFINE_UNQUOTED(WRITEV_IOV, 32)
 428         ;;
 429     *-linux*)
 430         linux="yes"
 431         AC_DEFINE_UNQUOTED(WRITEV_IOV, 32)
 432         ;;
 433     *aix*)
 434         aix="yes"
 435         AC_DEFINE(AIX)
 436         ;;
 437     *-darwin*)
 438         check_hmodules="no"
 439         AC_DEFINE_UNQUOTED(WRITEV_IOV, 32)
 440         ;;
 441 esac
 442
 443 dnl Checks for loadable hook module support
 444
 445 set_hmodules="disabled"
 446
 447 if test "$check_hmodules" = "yes"; then
 448     AC_CHECK_LIB(dl, dlopen)
 449     AC_CHECK_HEADER(dlfcn.h)
 450     AC_CHECK_FUNCS(dlopen dlsym, [set_hmodules="enabled"])
 451     if test "$set_hmodules" = "enabled"; then
 452         AC_DEFINE(USE_HOOKMODULES)
 453         MOD_LDFLAGS="-Wl,-export-dynamic"
 454     fi
 455 fi
 456
 457 dnl Check for sys_errlist
 458 dnl Stolen from BitchX
 459 AC_MSG_CHECKING(for sys_errlist declaration)
 460 AC_RUN_IFELSE([AC_LANG_SOURCE([[
 461 #include <sys/types.h>
 462 #include <stdio.h>
 463 #include <errno.h>
 464 main()
 465 {
 466   char *s = sys_errlist[0];
 467           exit(0);
 468 }
 469 ]])],[AC_MSG_RESULT(yes)
 470   AC_DEFINE(SYS_ERRLIST_DECLARED)],[AC_MSG_RESULT(no)],[AC_MSG_RESULT(cross compiling)])
 471
 472 dnl Openssl checks - combination of our old way and the hybrid7 method
 473
 474 save_LIBS="$LIBS"
 475
 476 AC_MSG_CHECKING(for OpenSSL)
 477
 478 if test "X$cf_enable_openssl" != "Xno" ; then
 479   cf_openssl_basedir=""
 480   if test "X$cf_enable_openssl" != "Xauto" &&
 481      test "X$cf_enable_openssl" != "Xyes"; then
 482      dnl Support for --enable-openssl=/some/place
 483      cf_openssl_basedir="${cf_enable_openssl}"
 484   else
 485     dnl Do the auto-probe here.  Check some common directory paths.
 486     for dirs in $HOME/openssl /usr/local/ssl /usr/pkg /usr/local /usr/lib /usr/lib/ssl\
 487                 /opt /opt/openssl /usr/local/openssl ; do
 488       if test -f "${dirs}/include/openssl/opensslv.h" ; then
 489         cf_openssl_basedir="${dirs}"
 490         break
 491       fi
 492     done
 493     unset dirs
 494   fi
 495   dnl Now check cf_openssl_found to see if we found anything.
 496   if test "X$cf_openssl_basedir" != "X" ; then
 497     if test -f "${cf_openssl_basedir}/include/openssl/opensslv.h" ; then
 498       SSL_INCLUDES="-I${cf_openssl_basedir}/include"
 499       SSL_LDFLAGS="-L${cf_openssl_basedir}/lib"
 500       if test "$cf_openssl_basedir" = "$HOME/openssl"; then
 501         SSL_LDFLAGS="-L${cf_openssl_basedir}/lib -Wl,-rpath,${cf_openssl_basedir}/lib"
 502       fi
 503     else
 504       dnl OpenSSL wasn't found in the directory specified.  Naughty
 505       dnl administrator...
 506       cf_openssl_basedir=""
 507     fi
 508   else
 509     dnl Check for stock FreeBSD 4.x and 5.x systems, since their files
 510     dnl are in /usr/include and /usr/lib.  In this case, we don't want to
 511     dnl change INCLUDES or LIBS, but still want to enable OpenSSL.
 512     dnl We can't do this check above, because some people want two versions
 513     dnl of OpenSSL installed (stock FreeBSD 4.x/5.x and /usr/local/ssl)
 514     dnl and they want /usr/local/ssl to have preference.
 515     if test -f "/usr/include/openssl/opensslv.h" ; then
 516       cf_openssl_basedir="/usr"
 517     fi
 518   fi
 519   dnl If we have a basedir defined, then everything is okay.  Otherwise,
 520   dnl we have a problem.
 521   if test "X$cf_openssl_basedir" != "X" ; then
 522     CPPFLAGS="$CPPFLAGS $SSL_INCLUDES"
 523     LDFLAGS="$LDFLAGS $SSL_LDFLAGS"
 524     LIBS="-lssl -lcrypto $save_LIBS"
 525     AC_MSG_RESULT($cf_openssl_basedir)
 526     cf_enable_openssl="yes"
 527     encryption="enabled"
 528     AC_DEFINE(HAVE_ENCRYPTION_ON)
 529     ENCRYPT_SRC="rc4.c dh.c libcrypto-compat.c"
 530     AC_SUBST(ENCRYPT_SRC)
 531   else
 532     AC_MSG_RESULT(not found.  Please check your path.)
 533     cf_enable_openssl="no"
 534     encryption="disabled"
 535   fi
 536   unset cf_openssl_basedir
 537 else
 538   dnl If --disable-openssl was specified
 539   encryption="disabled"
 540   AC_MSG_RESULT(disabled)
 541 fi
 542
 543 unset save_LIBS
 544
 545 dnl end of openssl library test
 546
 547 dnl select a socket engine
 548
 549 if test "$check_sengine" = "yes"; then
 550     engine="select"
 551     if test "$freebsd" = "yes"; then
 552         AC_CHECK_FUNC(kevent, [ engine="kqueue" ], )
 553     elif test "$solaris2" = "yes"; then
 554         engine="poll"
 555         AC_CHECK_HEADER(sys/devpoll.h, engine="devpoll", )
 556     elif test "$linux" = "yes"; then
 557         AC_CHECK_FUNC(poll, [ engine="poll" ], )
 558         AX_HAVE_EPOLL([ engine="epoll" ], )
 559         AC_CHECK_HEADER(sys/epoll.h, HAVE_EPOLL_H=yes, HAVE_EPOLL_H=no)
 560        # AC_CHECK_LIB(epoll, epoll_create,
 561        #     [LIBS="$LIBS -lepoll"; have_epoll_lib="yes"; engine="epoll"],
 562        #     have_epoll_lib="no")
 563        # if test "$HAVE_EPOLL_H $have_epoll_lib" = "yes no"; then
 564        #     AC_MSG_CHECKING(for epoll_create [without -lepoll])
 565        #     AC_RUN_IFELSE([AC_LANG_SOURCE([[
 566        #             #include <stdint.h>
 567        #             #include <sys/epoll.h>
 568        #             #include <errno.h>
 569        #
 570        #             #include <asm/unistd.h>
 571        #
 572        #             _syscall1(int, epoll_create, int, size)
 573        #
 574        #             int main(int argc, char **argv) { return epoll_create(5) < 1; }
 575        #             ]])],[have_epoll_lib="yes"],[have_epoll_lib="no"],[])
 576        #     AC_MSG_RESULT($have_epoll_lib)
 577        #     if test "$have_epoll_lib" = "yes"; then
 578        #         AC_DEFINE(NEED_EPOLL_DEFS)
 579        #     fi
 580        # fi
 581        # if test "$HAVE_EPOLL_H $have_epoll_lib" = "yes yes"; then
 582        #     engine="epoll";
 583        # fi
 584     else
 585         AC_CHECK_FUNC(poll, [ engine="poll"], )
 586     fi
 587 elif test "$check_sengine" = "kqueue"; then
 588     AC_CHECK_FUNC(kevent, [ engine="kqueue" ], )
 589     if test "X$engine" = "X"; then
 590         AC_MSG_NOTICE()
 591         AC_MSG_NOTICE(kqueue not supported on this platform!)
 592         AC_MSG_ERROR()
 593     fi
 594     AC_MSG_NOTICE(setting socketengine type to kqueue)
 595 elif test "$check_sengine" = "poll"; then
 596     AC_CHECK_FUNC(poll, [ engine="poll" ], )
 597     if test "X$engine" = "X"; then
 598         AC_MSG_NOTICE()
 599         AC_MSG_NOTICE(poll not supported on this platform!)
 600         AC_MSG_ERROR()
 601     fi
 602     AC_MSG_NOTICE(setting socketengine type to poll)
 603 elif test "$check_sengine" = "devpoll"; then
 604     AC_CHECK_HEADER(sys/devpoll.h, engine="devpoll", )
 605     if test "X$engine" = "X"; then
 606         AC_MSG_NOTICE()
 607         AC_MSG_NOTICE(/dev/poll not supported on this system)
 608         AC_MSG_ERROR()
 609     fi
 610     AC_MSG_NOTICE(setting socketengine to devpoll)
 611 elif test "$check_sengine" = "epoll"; then
 612     AC_CHECK_HEADER(sys/epoll.h, HAVE_EPOLL_H=yes, HAVE_EPOLL_H=no)
 613     AC_CHECK_LIB(epoll, epoll_create,
 614         [LIBS="$LIBS -lepoll"; have_epoll_lib="yes"; engine="epoll"],
 615         have_epoll_lib="no")
 616     if test "$HAVE_EPOLL_H $have_epoll_lib" = "yes no"; then
 617         AC_MSG_CHECKING(for epoll_create [without -lepoll])
 618         AC_RUN_IFELSE([AC_LANG_SOURCE([[
 619                 #include <stdint.h>
 620                 #include <sys/epoll.h>
 621                 #include <errno.h>
 622
 623                 #include <asm/unistd.h>
 624
 625                 _syscall1(int, epoll_create, int, size)
 626
 627                 int main(int argc, char **argv) { return epoll_create(5) < 1; }
 628                 ]])],[have_epoll_lib="yes"],[have_epoll_lib="no"],[])
 629         AC_MSG_RESULT($have_epoll_lib)
 630         if test "$have_epoll_lib" = "yes"; then
 631             AC_DEFINE(NEED_EPOLL_DEFS)
 632         fi
 633     fi
 634     if test "$HAVE_EPOLL_H $have_epoll_lib" != "yes yes"; then
 635         AC_MSG_NOTICE()
 636         AC_MSG_ERROR(epoll is not supported on this machine)
 637         AC_MSG_ERROR()
 638     fi
 639     AC_MSG_NOTICE(setting socketengine type to epoll)
 640     engine="epoll";
 641 elif test "$check_sengine" = "select"; then
 642     AC_MSG_NOTICE(setting socketengine type to select.. for some stupid reason)
 643     engine="select"
 644 else
 645     AC_MSG_NOTICE()
 646     AC_MSG_NOTICE(socket engine type incorrect!)
 647     AC_MSG_ERROR()
 648 fi
 649
 650 SENGINE="socketengine_$engine.c"
 651
 652 dnl Check to see if we have a broken FD_SETSIZE
 653 if test $engine = "select"; then
 654     AC_MSG_CHECKING(to see if FD_SETSIZE is broken)
 655     AC_RUN_IFELSE([AC_LANG_SOURCE([[
 656     #define FD_SETSIZE 666
 657     #include <sys/types.h>
 658     #include <sys/time.h>
 659
 660     int main()
 661     {
 662         if(FD_SETSIZE != 666)
 663             exit(1);
 664         exit(0);
 665     }
 666     ]])],[AC_MSG_RESULT(no)],[
 667     AC_MSG_RESULT(YES)
 668     AC_MSG_WARN(FD_SETSIZE is hard set by your operating system)
 669     AC_MSG_WARN(MAXCONNECTIONS must be no higher than the hardwired FD_SETSIZE)
 670     AC_DEFINE(BROKEN_FD_SETSIZE)
 671     broken_fd_setsize="yes"
 672     ],[AC_MSG_RESULT(can't tell)])
 673 fi
 674
 675 if test "$solaris2" != "yes" && test "$aix" != "yes" &&
 676    test "$set_hmodules" = "enabled"; then
 677     LDFLAGS="$LDFLAGS $MOD_LDFLAGS"
 678 fi
 679
 680 if test "$check_maxconnections" = "auto"; then
 681
 682     AC_MSG_CHECKING(Maximum file descriptors);
 683     AC_CACHE_VAL(bh_cv_maxconnections,
 684 [
 685
 686 AC_LANG_CONFTEST(
 687    [AC_LANG_SOURCE([[
 688     #include <sys/types.h>
 689     #include <sys/time.h>
 690     #include <sys/resource.h>
 691     #include <stdio.h>
 692     #ifdef RLIMIT_FDMAX
 693     #define RLIMIT_FD_MAX   RLIMIT_FDMAX
 694     #else
 695     #ifdef RLIMIT_NOFILE
 696     #define RLIMIT_FD_MAX RLIMIT_NOFILE
 697     #else
 698     #ifdef RLIMIT_OPEN_MAX
 699     #define RLIMIT_FD_MAX RLIMIT_OPEN_MAX
 700     #else
 701     #undef RLIMIT_FD_MAX
 702     #endif
 703     #endif
 704     #endif
 705
 706
 707     int main()
 708     {
 709     #ifndef BROKEN_FD_SETSIZE
 710
 711     #ifdef RLIMIT_FD_MAX
 712         struct rlimit limit;
 713
 714         if(!getrlimit(RLIMIT_FD_MAX, &limit))
 715         {
 716             if(limit.rlim_max > 32768)
 717                 printf("32768");
 718             else
 719                 printf("%ld", (long) limit.rlim_max);
 720         }
 721         else
 722     #endif
 723             printf("256");
 724
 725     #else
 726         printf("%d", FD_SETSIZE);
 727     #endif
 728         return 0;
 729     }
 730    ]])
 731 ])
 732
 733     $CC -o conftest conftest.c >/dev/null 2>&1
 734     maxconnections=`./conftest`
 735     AC_MSG_RESULT($maxconnections)
 736     $RM -f conftest conftest.c
 737 ])
 738     AC_DEFINE_UNQUOTED(MAXCONNECTIONS, ${maxconnections})
 739
 740 else
 741     maxconnections=$check_maxconnections
 742     AC_DEFINE_UNQUOTED(MAXCONNECTIONS, ${maxconnections})
 743 fi
 744
 745 # zlib test
 746 # ripped from http://autoconf-archive.cryp.to/check_zlib.html
 747 #
 748 ZLIB_HOME=/usr/local
 749 if test ! -f "${ZLIB_HOME}/include/zlib.h"
 750 then
 751         ZLIB_HOME=/usr
 752 fi
 753 if test -n "${ZLIB_HOME}"
 754 then
 755         ZLIB_OLD_CPPFLAGS="$CPPFLAGS"
 756         ZLIB_OLD_LDFLAGS="$LDFLAGS"
 757         if test "x$ZLIB_HOME" = "x/usr"; then
 758             :
 759         else
 760             CPPFLAGS="$CPPFLAGS -I${ZLIB_HOME}/include"
 761             LDFLAGS="$LDFLAGS -L${ZLIB_HOME}/lib"
 762         fi
 763         AC_LANG_PUSH([C])
 764         AC_CHECK_LIB(z, inflateEnd, [zlib_cv_libz=yes], [zlib_cv_libz=no])
 765         AC_CHECK_HEADER(zlib.h, [zlib_cv_zlib_h=yes], [zlib_cv_zlib_h=no])
 766         AC_LANG_POP([])
 767         if test "$zlib_cv_libz" = "yes" -a "$zlib_cv_zlib_h" = "yes"
 768         then
 769                 #
 770                 # If both library and header were found, use them
 771                 #
 772                 AC_CHECK_LIB(z, inflateEnd)
 773                 AC_MSG_CHECKING(zlib in ${ZLIB_HOME})
 774                 AC_MSG_RESULT(ok)
 775         else
 776                 #
 777                 # If either header or library was not found, revert and bomb
 778                 #
 779                 AC_MSG_CHECKING(zlib in ${ZLIB_HOME})
 780                 CPPFLAGS="$ZLIB_OLD_CPPFLAGS"
 781                 LDFLAGS="$ZLIB_OLD_LDFLAGS"
 782                 AC_MSG_RESULT(failed)
 783                 AC_MSG_ERROR(either specify a valid zlib installation with --with-zlib=DIR or disable zlib usage with --without-zlib)
 784         fi
 785 fi
 786
 787 if test "$engine" = "select" && test "$broken_fd_setsize" != "yes"; then
 788     CFLAGS="$CFLAGS -DFD_SETSIZE=$maxconnections"
 789 fi
 790
 791 if test $prefix = NONE; then
 792     prefix=${HOME}/ircd
 793     if test -f "${HOME}/bahamut/ircd" ; then
 794         prefix=${HOME}/bahamut
 795     fi
 796     if test -f "${HOME}/dalnet/ircd" ; then
 797         prefix=${HOME}/dalnet
 798     fi
 799 fi
 800
 801 INSTALL_DIR="${prefix}"
 802
 803 AC_SUBST(LIBS)
 804 AC_SUBST(SENGINE)
 805 AC_SUBST(INSTALL_DIR)
 806
 807 AC_CONFIG_FILES([Makefile src/Makefile tools/Makefile doc/Makefile])
 808 AC_OUTPUT
 809
 810 echo ""
 811 echo "      ******* Bahamut Configuration Settings *******"
 812 echo "      System Build Type:              $target"
 813 echo "      Socket Engine Type:             $engine"
 814 echo "      Encryption:                     $encryption"
 815 echo "      Loadable Modules:               $set_hmodules"
 816 echo "      Maximum Connections:            $maxconnections"
 817 echo "      Install Directory:              $prefix"
 818 echo ""