diplodocus.org Git - nmh/blob - configure.in

   1 dnl
   2 dnl configure.in -- autoconf template for nmh
   3 dnl
   4 dnl $Id$
   5 dnl
   6
   7 AC_INIT(h/nmh.h)
   8 AC_CONFIG_HEADER(config.h)
   9
  10 AC_CANONICAL_SYSTEM
  11
  12 dnl ---------------------
  13 dnl define a macro or two
  14 dnl ---------------------
  15
  16 AC_DEFUN(NMH_PROG_GNU_LIBTOOL, [
  17 if test -n "$LIBTOOL" ; then
  18   tmptest=`$LIBTOOL --version 2>&1 | grep GNU`
  19   if test x"$tmptest" != x  ; then
  20     GNU_LIBTOOL=1
  21     AC_SUBST(GNU_LIBTOOL)dnl
  22   fi
  23 fi
  24 ] )
  25
  26
  27 dnl What version of nmh are we building?
  28 VERSION=`sed -e 's/nmh-//' ${srcdir}/VERSION`
  29 echo "configuring for nmh-$VERSION"
  30 AC_SUBST(VERSION)dnl
  31
  32 dnl What date of nmh are we building?
  33 DATE=`cat ${srcdir}/DATE`
  34 echo "configuring for nmh dated $DATE"
  35 AC_SUBST(DATE)dnl
  36
  37 dnl --------------------------
  38 dnl CHECK COMMAND LINE OPTIONS
  39 dnl --------------------------
  40
  41 dnl Do you want client-side support for apop?
  42 AC_ARG_ENABLE(apop,
  43 [  --enable-apop           enable client-side support for POP3 and APOP])
  44 if test x"$enable_apop" = x"yes"; then
  45   AC_DEFINE(APOP)dnl
  46   APOPLIB=md5.o
  47   enable_pop=yes
  48 fi
  49 AC_SUBST(APOPLIB)dnl
  50
  51 dnl Do you want to debug nmh?
  52 undefine([debug])dnl
  53 AC_ARG_ENABLE(debug,
  54 [  --enable-debug          enable nmh code debugging])
  55 dnl The old redundant --enable-nmh-debug is deprecated and undocumented.
  56 if test x"$enable_nmh_debug" = x"yes"; then
  57   enable_debug=yes
  58 fi
  59
  60 dnl Allow users to send email from addresses other than their default?
  61 undefine([masquerade])dnl
  62 AC_ARG_ENABLE(masquerade,
  63   [  --enable-masquerade[='draft_from mmailid username_extension']
  64                           enable up to 3 types of address masquerading [none]],
  65   [if test x"$enable_masquerade" = x"yes"; then
  66     masquerade="draft_from mmailid username_extension"
  67   else
  68     masquerade="$enable_masquerade"
  69   fi])
  70 AC_SUBST(masquerade)dnl
  71
  72 dnl Do you want mhe support?
  73 undefine([mhe])dnl
  74 AC_ARG_ENABLE(mhe,
  75 [  --enable-mhe            enable mhe support (DEFAULT)])
  76
  77 dnl mhe support is on by default, so define it unless --disable-mhe or the
  78 dnl deprecated, undocumented --disable-nmh-mhe are specified.
  79 if test x"$enable_mhe" != x"no" -a x"$enable_nmh_mhe" != x"no"; then
  80   AC_DEFINE(MHE)dnl
  81 fi
  82
  83 dnl Do you want client-side support for pop?
  84 undefine([pop])dnl
  85 AC_ARG_ENABLE(pop,
  86 [  --enable-pop            enable client-side support for plain POP3])
  87 dnl The old redundant --enable-nmh-pop is deprecated and undocumented.
  88 if test x"$enable_nmh_pop" = x"yes"; then
  89   enable_pop=yes
  90 fi
  91
  92 dnl Do you want client-side support for using SASL for authentication?
  93 dnl Note that this code will be enabled for both POP and SMTP
  94 AC_ARG_WITH(cyrus-sasl,
  95 [  --with-cyrus-sasl=<dir> Specify location of Cyrus SASL library for auth])
  96 if test x"$with_cyrus_sasl" != x -a x"$with_cyrus_sasl" != "no"; then
  97   AC_DEFINE(CYRUS_SASL)dnl
  98 fi
  99
 100 dnl What should be the default editor?
 101 undefine([editor])dnl
 102 AC_ARG_WITH(editor,
 103 [  --with-editor=EDITOR    specify the default editor])
 104
 105 if test -n "$with_editor"; then
 106   editorpath="$with_editor"
 107 fi
 108
 109 dnl Set the backup prefix
 110 undefine([backup-prefix])dnl
 111 AC_ARG_WITH([hash-backup],
 112   [  --with-hash-backup      use # as the backup prefix (default: ,)])
 113 if test x"$with_hash_backup" != x -a x"$with_hash_backup" != x"no"; then
 114   backup_prefix="#"
 115 else
 116   backup_prefix=","
 117 fi
 118 AC_DEFINE_UNQUOTED(BACKUP_PREFIX, "$backup_prefix")dnl
 119
 120 dnl Do you want support for hesiod
 121 AC_ARG_WITH(hesiod,
 122 [  --with-hesiod=PREFIX    specify location of Hesiod])
 123 if test x"$with_hesiod" != x -a x"$with_hesiod" != x"no"; then
 124   AC_DEFINE(HESIOD)dnl
 125 fi
 126
 127 dnl Do you want client-side support for kpop
 128 AC_ARG_WITH(krb4,
 129 [  --with-krb4=PREFIX      specify location of Kerberos V4 for KPOP support])
 130 if test x"$with_krb4" != x -a x"$with_krb4" != x"no"; then
 131   enable_pop=yes
 132   AC_DEFINE(KPOP)dnl
 133   AC_DEFINE(KPOP_PRINCIPAL, "pop")dnl
 134 fi
 135
 136 dnl After we know if we're including apop and kpop support, do pop stuff
 137 if test x"$enable_pop" = x"yes"; then
 138   AC_DEFINE(POP)dnl
 139   POPLIB=popsbr.o
 140   POPSED='/^%nmhbeginpop%/d;/^%nmhendpop%/d'
 141 else
 142   POPSED='/^%nmhbeginpop%/,/^%nmhendpop%/d'
 143 fi
 144 AC_SUBST(POPLIB)dnl
 145 AC_SUBST(POPSED)dnl
 146
 147 dnl What method of locking to use?
 148 undefine([locking])dnl
 149 AC_ARG_WITH(locking,
 150 [  --with-locking=LOCKTYPE specify the file locking method
 151                           (one of dot, fcntl, flock, lockf)])
 152
 153 if test x"$with_locking" = x"dot"; then
 154   LOCKTYPE="dot"
 155   AC_DEFINE(DOT_LOCKING)dnl
 156 elif test x"$with_locking" = x"flock"; then
 157   LOCKTYPE="flock"
 158   AC_DEFINE(FLOCK_LOCKING)dnl
 159 elif test x"$with_locking" = x"lockf"; then
 160   LOCKTYPE="lockf"
 161   AC_DEFINE(LOCKF_LOCKING)dnl
 162 elif test x"$with_locking" = x"fcntl"; then
 163   LOCKTYPE="fcntl"
 164   AC_DEFINE(FCNTL_LOCKING)dnl
 165 else
 166   LOCKTYPE="dot"
 167   AC_DEFINE(DOT_LOCKING)dnl
 168 fi
 169
 170 dnl What method of posting should post use?
 171 undefine([mts])dnl
 172 AC_ARG_WITH(mts,
 173 [  --with-mts=MTS          specify the default mail transport agent/service])
 174
 175 if test x"$with_mts" = x"smtp"; then
 176   MTS="smtp"
 177 elif test x"$with_mts" = x"sendmail"; then
 178   MTS="sendmail"
 179 else
 180   MTS="smtp"
 181 fi
 182 AC_SUBST(MTS)dnl
 183
 184 dnl Both the smtp and sendmail mail transport services use the smtp code
 185 AC_DEFINE(SMTPMTS)dnl
 186
 187 dnl What should be the default pager?
 188 undefine([pager])dnl
 189 AC_ARG_WITH(pager,
 190 [  --with-pager=PAGER      specify the default pager])
 191
 192 if test -n "$with_pager"; then
 193   pagerpath="$with_pager"
 194 fi
 195
 196 dnl What should be the default mail server(s)?
 197 undefine([smtpservers])dnl
 198 AC_ARG_WITH(smtpservers,
 199 [  --with-smtpservers='SMTPSERVER1[ SMTPSERVER2...]'
 200                           specify the default SMTP server(s) [localhost]])
 201 if test -n "$with_smtpservers"; then
 202   smtpservers="$with_smtpservers"
 203 else
 204   smtpservers="localhost"
 205 fi
 206 AC_SUBST(smtpservers)dnl
 207
 208 dnl ----------------------------------------------------
 209 dnl Default location is /usr/local/nmh/{bin,etc,lib,man}
 210 dnl ----------------------------------------------------
 211 AC_PREFIX_DEFAULT(/usr/local/nmh)
 212
 213 dnl ------------------
 214 dnl CHECK THE COMPILER
 215 dnl ------------------
 216 dnl We want these before the checks,
 217 dnl so the checks can modify their values.
 218 test -z "$CFLAGS" && CFLAGS= auto_cflags=1
 219 if test x"$enable_debug" = x"yes"; then
 220   test -z "$LDFLAGS" && LDFLAGS=-g
 221 fi
 222
 223 AC_PROG_CC
 224
 225 dnl if the user hasn't specified CFLAGS, then
 226 dnl   if compiler is gcc, then
 227 dnl     use -O2 and some warning flags
 228 dnl   else use -O
 229 if test -n "$auto_cflags"; then
 230   if test x"$enable_debug" = x"yes"; then
 231     if test -n "$GCC"; then
 232       test -z "$CFLAGS" && CFLAGS="-Wall -g" || CFLAGS="$CFLAGS -Wall -g"
 233     else
 234       test -z "$CFLAGS" && CFLAGS=-g || CFLAGS="$CFLAGS -g"
 235     fi
 236   else
 237     if test -z "$LDFLAGS"; then
 238       case "$build_os" in
 239         darwin*)
 240           LDFLAGS=
 241           ;;
 242         *)
 243           LDFLAGS=-s
 244           ;;
 245       esac
 246     fi
 247     if test -n "$GCC"; then
 248       test -z "$CFLAGS" && CFLAGS="-Wall -O2" || CFLAGS="$CFLAGS -Wall -O2"
 249     else
 250       test -z "$CFLAGS" && CFLAGS=-O  || CFLAGS="$CFLAGS -O"
 251     fi
 252   fi
 253 fi
 254
 255 AC_C_CONST              dnl Does compiler support `const'.
 256
 257 dnl ------------------
 258 dnl CHECK FOR PROGRAMS
 259 dnl ------------------
 260 AC_PROG_MAKE_SET        dnl Does make define $MAKE
 261 AC_PROG_INSTALL         dnl Check for BSD compatible `install'
 262 AC_PROG_RANLIB          dnl Check for `ranlib'
 263 AC_PROG_AWK             dnl Check for mawk,gawk,nawk, then awk
 264 AC_PROG_LEX             dnl Check for lex/flex
 265
 266 dnl Look for `cut'
 267 pathtmp=/usr/bin:/bin:/usr/local/bin:/usr/xpg4/bin:/usr/ucb
 268 AC_PATH_PROG(cutpath, cut, no, [$pathtmp])
 269
 270 dnl ----------------------------------------------
 271 dnl check for lclint, and lint if it doesn't exist
 272 dnl ----------------------------------------------
 273 AC_CHECK_PROG(linttmp1, lclint, lclint, no)dnl
 274 if test x$ac_cv_prog_linttmp1 != xno ; then
 275   LINT=$ac_cv_prog_linttmp1
 276   LINTFLAGS="-weak +posixlib -macrovarprefixexclude"
 277 else
 278   AC_CHECK_PROG(linttmp2, lint, lint, no)dnl
 279   if test x$ac_cv_prog_linttmp2 != xno ; then
 280     LINT=$ac_cv_prog_linttmp2
 281     LINTFLAGS=""
 282   else
 283     LINT="echo 'No lint program found'"
 284     LINTFLAGS=""
 285   fi
 286 fi
 287 AC_SUBST(LINT)dnl
 288 AC_SUBST(LINTFLAGS)dnl
 289
 290 dnl try to figure out which one we've got
 291 AC_CHECK_PROG(LIBTOOL, libtool, libtool, , [$pathtmp])
 292 NMH_PROG_GNU_LIBTOOL
 293
 294 dnl Check for lorder and tsort commands
 295 AC_CHECK_PROG(LORDER, lorder, lorder, no)dnl
 296 AC_CHECK_PROG(TSORT, tsort, tsort, no)dnl
 297
 298 dnl If either doesn't exist, replace them with echo and cat
 299 if test x$ac_cv_prog_LORDER != xlorder -o x$ac_cv_prog_TSORT != xtsort; then
 300   LORDER=echo
 301   TSORT=cat
 302   AC_SUBST(LORDER)dnl
 303   AC_SUBST(TSORT)dnl
 304 dnl Mac OS X has lorder, but sh is too broken for it to work
 305 dnl elif test -z "`lorder config/config.c 2>&1 | grep config/config.c`" ; then
 306 dnl   LORDER=echo
 307 dnl   TSORT=cat
 308 dnl   AC_SUBST(LORDER)dnl
 309 dnl   AC_SUBST(TSORT)dnl
 310 fi
 311
 312 dnl Check whether tsort can deal with loops
 313 AC_CACHE_CHECK(whether tsort can deal with loops, nmh_cv_tsort_loop,
 314   [if test -z "`echo a b b a | tsort 2>/dev/null | grep a`" ; then
 315     nmh_cv_tsort_loop=no
 316   else
 317     nmh_cv_tsort_loop=yes
 318   fi])
 319 if test x$nmh_cv_tsort_loop = xno ; then
 320   LORDER=echo
 321   TSORT=cat
 322   AC_SUBST(LORDER)dnl
 323   AC_SUBST(TSORT)dnl
 324 fi
 325
 326 dnl Look for `ls'
 327 pathtmp=/usr/bin:/bin:/usr/local/bin:/usr/xpg4/bin:/usr/ucb
 328 AC_PATH_PROG(lspath, ls, no, [$pathtmp])
 329
 330 dnl See how we get ls to display the owner and the group
 331 if test "$lspath" != "no"; then
 332   AC_CACHE_CHECK(how to get ls to show us the group ownership of a file,
 333                  nmh_cv_ls_grpopt,
 334   [if test x"`$lspath -dl / | $AWK '{print $9}'`" = x"/"; then
 335     dnl There were 9 parameters, so unless this is a really bizarre, nonstandard
 336     dnl ls, it would seem -l gave us both the user and group.  On this type of
 337     dnl ls, -g makes _only_ the group be displayed (and not the user).
 338     nmh_cv_ls_grpopt="-l"
 339   else
 340     dnl Looks like -l only gave us the user, so we need -g to get the group too.
 341     nmh_cv_ls_grpopt="-lg"
 342   fi])
 343 fi
 344
 345 dnl Look for `more'
 346 pathtmp=/usr/bin:/bin:/usr/ucb:/usr/local/bin
 347 AC_PATH_PROG(morepath, more, no, [$pathtmp])
 348
 349 dnl If pager is not specified yet,
 350 dnl then use `more' as the default.
 351 if test -z "$pagerpath"; then
 352   pagerpath="$morepath"
 353 fi
 354 AC_SUBST(pagerpath)dnl
 355
 356 dnl Look for `sendmail'
 357 pathtmp=/usr/lib:/usr/sbin:/usr/etc:/usr/ucblib:/usr/bin:/bin
 358 AC_PATH_PROG(sendmailpath, sendmail, no, [$pathtmp])
 359
 360 dnl Look for `vi'
 361 pathtmp=/usr/bin:/bin:/usr/ucb:/usr/local/bin
 362 AC_PATH_PROG(vipath, vi, no, [$pathtmp])
 363
 364 dnl If editor is not specified yet,
 365 dnl then use `vi' as the default.
 366 if test -z "$editorpath"; then
 367   editorpath="$vipath"
 368 fi
 369 AC_SUBST(editorpath)dnl
 370
 371 dnl Check for broken vi
 372 AC_CACHE_CHECK(for broken vi, nmh_cv_attvibug,
 373 [if echo 'r /nonexist-file
 374 q' | ex > /dev/null 2>&1
 375 then
 376         nmh_cv_attvibug=no
 377 else
 378         nmh_cv_attvibug=yes
 379 fi])
 380
 381 if test "$nmh_cv_attvibug" = yes; then
 382   AC_DEFINE(ATTVIBUG)dnl
 383 fi
 384
 385 dnl ----------------------------------------------------------
 386 dnl FIND MAIL SPOOL AND SEE IF WE NEED TO MAKE inc SETGID MAIL
 387 dnl ----------------------------------------------------------
 388 AC_CACHE_CHECK(where mail spool is located, nmh_cv_mailspool,
 389 [for mailspool in /var/mail        dnl
 390                   /var/spool/mail  dnl
 391                   /usr/spool/mail  dnl
 392                   /dev/null;       dnl Just in case we fall through
 393 do
 394   test -d $mailspool && break
 395 done
 396 nmh_cv_mailspool=$mailspool
 397 ])
 398 mailspool=$nmh_cv_mailspool
 399 AC_SUBST(mailspool)dnl
 400
 401 dnl See whether the mail spool directory is world-writable.
 402 if test "$lspath" != "no" -a "$cutpath" != "no"; then
 403   AC_CACHE_CHECK(whether the mail spool is world-writable,
 404                  nmh_cv_mailspool_world_writable,
 405   [if test "`$lspath -dlL $mailspool | $cutpath -c9`" = "-"; then
 406     nmh_cv_mailspool_world_writable=no
 407   else
 408     nmh_cv_mailspool_world_writable=yes
 409   fi])
 410 fi
 411
 412 dnl Also, check for liblockfile (as found on Debian systems)
 413 AC_CHECK_HEADER(lockfile.h, AC_CHECK_LIB(lockfile, lockfile_create) )
 414
 415 dnl and whether its companion program dotlockfile is setgid
 416 AC_PATH_PROG(dotlockfilepath, dotlockfile, no)
 417 if test "$ac_cv_lib_lockfile_lockfile_create" != "no" ; then
 418   if test "$ac_cv_path_dotlockfilepath" != "no" ; then
 419     AC_CACHE_CHECK(whether dotlockfile is setgid, nmh_cv_dotlockfile_setgid,
 420     [ if test -g "$ac_cv_path_dotlockfilepath" ; then
 421         nmh_cv_dotlockfile_setgid=yes
 422       else
 423         nmh_cv_dotlockfile_setgid=no
 424       fi])
 425   fi
 426 fi
 427
 428 dnl If mailspool is not world-writable and dotlockfile is not setgid,
 429 dnl we need to #define MAILGROUP to 1 and make inc setgid.
 430 if test x"$nmh_cv_mailspool_world_writable" = x"no" -a x"$nmh_cv_dotlockfile_setgid" != x"yes" ; then
 431   dnl do we really need both of these?
 432   AC_DEFINE(MAILGROUP)dnl
 433   SETGID_MAIL=1
 434 fi
 435 AC_SUBST(SETGID_MAIL)dnl
 436
 437 dnl Use ls to see which group owns the mail spool directory.
 438 AC_CACHE_CHECK(what group owns the mail spool, nmh_cv_ls_mail_grp,
 439 [nmh_cv_ls_mail_grp=`$lspath -dL $nmh_cv_ls_grpopt $mailspool|$AWK '{print $4}'`
 440 ])
 441 MAIL_SPOOL_GRP=$nmh_cv_ls_mail_grp
 442 AC_SUBST(MAIL_SPOOL_GRP)dnl
 443
 444 dnl ------------------
 445 dnl CHECK HEADER FILES
 446 dnl ------------------
 447 AC_HEADER_DIRENT
 448 AC_HEADER_STDC
 449 AC_HEADER_TIME
 450 AC_HEADER_SYS_WAIT
 451 AC_HEADER_STAT
 452 AC_CHECK_HEADERS(string.h memory.h stdlib.h unistd.h errno.h fcntl.h \
 453                  limits.h crypt.h termcap.h termio.h termios.h locale.h \
 454                  netdb.h sys/param.h sys/time.h sys/utsname.h arpa/inet.h \
 455                  arpa/ftp.h)
 456
 457
 458 AC_CACHE_CHECK(POSIX termios, nmh_cv_sys_posix_termios,
 459 [AC_TRY_LINK([#include <sys/types.h>
 460 #include <unistd.h>
 461 #include <termios.h>],
 462 [/* SunOS 4.0.3 has termios.h but not the library calls.  */
 463 tcgetattr(0, 0);],
 464   nmh_cv_sys_posix_termios=yes, nmh_cv_sys_posix_termios=no)])
 465
 466 if test $nmh_cv_sys_posix_termios = yes; then
 467   AC_CACHE_CHECK(TIOCGWINSZ in termios.h,
 468   nmh_cv_header_termios_h_tiocgwinsz,
 469   [AC_TRY_LINK([#include <sys/types.h>
 470 #include <termios.h>],
 471   [int x = TIOCGWINSZ;],
 472   nmh_cv_header_termios_h_tiocgwinsz=yes,
 473   nmh_cv_header_termios_h_tiocgwinsz=no)])
 474 else
 475   nmh_cv_header_termios_h_tiocgwinsz=no
 476 fi
 477
 478 if test $nmh_cv_header_termios_h_tiocgwinsz = no; then
 479   AC_CACHE_CHECK(TIOCGWINSZ in sys/ioctl.h,
 480   nmh_cv_header_sys_ioctl_h_tiocgwinsz,
 481   [AC_TRY_LINK([#include <sys/types.h>
 482 #include <sys/ioctl.h>],
 483   [int x = TIOCGWINSZ;],
 484   nmh_cv_header_sys_ioctl_h_tiocgwinsz=yes,
 485   nmh_cv_header_sys_ioctl_h_tiocgwinsz=no)])
 486   if test $nmh_cv_header_sys_ioctl_h_tiocgwinsz = yes; then
 487     AC_DEFINE(GWINSZ_IN_SYS_IOCTL)dnl
 488   fi
 489 fi
 490
 491 dnl
 492 dnl Checks for _IO_write_ptr. A Linuxism used by nmh on linux. We
 493 dnl really use a whole set of them, but this check should be
 494 dnl sufficient.
 495 dnl
 496 AC_CHECK_HEADER(libio.h, [
 497   AC_EGREP_HEADER(_IO_write_ptr, libio.h, [
 498     AC_DEFINE(LINUX_STDIO) ]) ])
 499
 500 AC_CHECK_HEADER([sys/ptem.h], AC_DEFINE(WINSIZE_IN_PTEM))
 501
 502 dnl ---------------
 503 dnl CHECK FUNCTIONS
 504 dnl ---------------
 505 AC_FUNC_VFORK
 506 AC_CHECK_LIB(mkstemp,mkstemp)
 507 AC_CHECK_FUNCS(waitpid wait3 sigaction sigprocmask sigblock sigsetmask \
 508                sighold sigrelse writev lstat uname tzset killpg mkstemp \
 509                sethostent getutent)
 510
 511 dnl solaris screws this up
 512 AC_CHECK_FUNC(gethostbyname, [AC_DEFINE(HAVE_GETHOSTBYNAME)],
 513   AC_CHECK_LIB(nsl, gethostbyname, [AC_DEFINE(HAVE_GETHOSTBYNAME)] ) )
 514
 515 dnl sigsetjmp may be a macro
 516 AC_MSG_CHECKING(for sigsetjmp)
 517 AC_TRY_LINK([#include <setjmp.h>], [sigsetjmp((void *)0, 0);],
 518         [AC_DEFINE(HAVE_SIGSETJMP) AC_MSG_RESULT(yes)], AC_MSG_RESULT(no))
 519
 520 AC_REPLACE_FUNCS(snprintf strerror strdup)
 521
 522 dnl Look for the initgroups() declaration.  On AIX 4.[13], Solaris 4.1.3, and
 523 dnl ULTRIX 4.2A the function is defined in libc but there's no declaration in
 524 dnl any system header.
 525 dnl
 526 dnl On Solaris 2.[456], the declaration is in <grp.h>.  On HP-UX 9-11 and
 527 dnl (reportedly) FreeBSD 3.[23], it's in <unistd.h>.  Any other locations we
 528 dnl need to check?
 529 AC_EGREP_HEADER(initgroups, grp.h, AC_DEFINE(INITGROUPS_HEADER, <grp.h>),
 530                 AC_EGREP_HEADER(initgroups, unistd.h,
 531                                 AC_DEFINE(INITGROUPS_HEADER, <unistd.h>)))
 532
 533 dnl On AIX 4.1, snprintf() is defined in libc.a but there's no prototype in
 534 dnl <stdio.h> or elsewhere.  Apparently it's not officially supported (though it
 535 dnl seems to work perfectly and IBM apparently uses it in internal code).
 536 dnl Anyhow, if we omit our own snprintf() and vsnprintf() prototypes when we
 537 dnl HAVE_SNPRINTF, we get a billion warnings at compile time.  Use the C
 538 dnl preprocessor to preprocess stdio.h and make sure that there's actually a
 539 dnl prototype.
 540 AC_EGREP_HEADER(snprintf, stdio.h, AC_DEFINE(HAVE_SNPRINTF_PROTOTYPE))
 541
 542 dnl -------------------
 543 dnl CHECK FOR LIBRARIES
 544 dnl -------------------
 545 dnl Check location of modf
 546 AC_CHECK_FUNC(modf, , AC_CHECK_LIB(m, modf))
 547
 548 dnl Checks for network libraries (nsl, socket)
 549 AC_CHECK_NETLIBS
 550
 551 termcap_curses_order="termcap curses ncurses"
 552 for lib in $termcap_curses_order; do
 553   AC_CHECK_LIB(${lib}, tgetent, [TERMLIB="-l$lib"; break])
 554 done
 555 AC_SUBST(TERMLIB)dnl
 556
 557 dnl --------------
 558 dnl CHECK FOR NDBM
 559 dnl --------------
 560 dnl Checks for ndbm
 561 AC_CHECK_FUNC(dbm_open, ,
 562   AC_CHECK_LIB(ndbm, dbm_open, ,
 563     AC_CHECK_LIB(dbm, dbm_open)))
 564
 565 dnl ----------------
 566 dnl CHECK FOR NDBM.H
 567 dnl ----------------
 568 AC_CHECK_HEADERS(db1/ndbm.h)
 569
 570 dnl ----------------
 571 dnl CHECK FOR HESIOD
 572 dnl ----------------
 573 if test x"$with_hesiod" != x -a x"$with_hesiod" != x"no"; then
 574   if test x"$with_hesiod" != x"yes"; then
 575     HESIOD_INCLUDES="-I$with_hesiod/include"
 576     HESIOD_LIBS="-L$with_hesiod/lib"
 577   fi
 578   AC_CHECK_FUNC(res_send,
 579         [AC_CHECK_LIB(hesiod, hes_resolve,
 580                 [HESIOD_LIBS="$HESIOD_LIBS -lhesiod"],
 581                 [AC_MSG_ERROR(Hesiod library not found)],
 582                 $HESIOD_LIBS)],
 583         [AC_CHECK_LIB(hesiod, hes_resolve,
 584                 [HESIOD_LIBS="$HESIOD_LIBS -lhesiod -lresolv"],
 585                 [AC_MSG_ERROR(Hesiod library not found)],
 586                 $HESIOD_LIBS -lresolv)])
 587
 588 fi
 589 AC_SUBST(HESIOD_INCLUDES)dnl
 590 AC_SUBST(HESIOD_LIBS)dnl
 591
 592 dnl ----------------------------------
 593 dnl CHECK FOR KRB4 (Kerberos4 support)
 594 dnl ----------------------------------
 595 if test x"$with_krb4" != x -a x"$with_krb4" != x"no"; then
 596   if test x"$with_krb4" != x"yes"; then
 597     KRB4_INCLUDES="-I$with_krb4/include"
 598     if test -d "$with_krb4/include/kerberosIV"; then
 599       KRB4_INCLUDES="$KRB4_INCLUDES -I$with_krb4/include/kerberosIV"
 600     fi
 601     KRB4_LIBS="-L$with_krb4/lib"
 602   elif test -d /usr/include/kerberosIV; then
 603     KRB4_INCLUDES="-I/usr/include/kerberosIV"
 604   fi
 605 dnl First, check if we have -lk5crypto, since that means we have a recent krb5
 606
 607   AC_CHECK_LIB(k5crypto, krb5_encrypt,
 608         [AC_CHECK_LIB(krb4, krb_rd_req,
 609                 [KRB4_LIBS="$KRB4_LIBS -lkrb4 -ldes425 -lkrb5 -lk5crypto -lcom_err"],
 610                 [AC_MSG_ERROR(Kerberos 4 compatibility libraries not found)],
 611                 $KRB4_LIBS -ldes425 -lkrb5 -lk5crypto -lcom_err)],
 612
 613         [AC_CHECK_LIB(krb4, krb_rd_req,
 614             [KRB4_LIBS="$KRB4_LIBS -lkrb4 -ldes425 -lkrb5 -lcrypto -lcom_err"],
 615             [AC_CHECK_LIB(krb, krb_rd_req,
 616               [KRB4_LIBS="$KRB4_LIBS -lkrb -ldes"],
 617               [AC_MSG_ERROR(Kerberos 4 libraries not found)],
 618               $KRB4_LIBS -ldes)],
 619             $KRB4_LIBS -ldes425 -lkrb5 -lcrypto -lcom_err)],
 620         $KRB4_LIBS)
 621
 622 fi
 623 AC_SUBST(KRB4_INCLUDES)dnl
 624 AC_SUBST(KRB4_LIBS)dnl
 625
 626 dnl --------------------
 627 dnl CHECK FOR CYRUS SASL
 628 dnl --------------------
 629 if test x"$with_cyrus_sasl" != x -a x"$with_cyrus_sasl" != "no"; then
 630   if test x"$with_cyrus_sasl" != x"yes"; then
 631     SASL_INCLUDES="-I$with_cyrus_sasl/include"
 632     SASL_LIBS="-L$with_cyrus_sasl/lib"
 633   fi
 634   save_LDFLAGS="$LDFLAGS"
 635   LDFLAGS="$LDFLAGS $SASL_LIBS"
 636   AC_CHECK_LIB(sasl, sasl_client_new,
 637     [SASL_LIBS="$SASL_LIBS -lsasl"],
 638     [AC_MSG_ERROR(Cyrus SASL library not found)])
 639   LDFLAGS="$save_LDFLAGS"
 640 fi
 641 AC_SUBST(SASL_INCLUDES)dnl
 642 AC_SUBST(SASL_LIBS)dnl
 643
 644 dnl ---------------------
 645 dnl CHECK TERMCAP LIBRARY
 646 dnl ---------------------
 647
 648 dnl Add the termcap library, so that the following configure
 649 dnl tests will find it when it tries to link test programs.
 650 nmh_save_LIBS="$LIBS"
 651 LIBS="$TERMLIB $LIBS"
 652
 653 dnl Checks for external variable ospeed in the termcap library.
 654 AC_CACHE_CHECK(if an include file defines ospeed,
 655 nmh_cv_decl_ospeed_include_defines,
 656 [AC_TRY_LINK(
 657 [#include <sys/types.h>
 658 #if HAVE_TERMIOS_H
 659 #include <termios.h>
 660 #endif
 661 #if HAVE_TERMCAP_H
 662 #include <termcap.h>
 663 #endif], [ospeed = 0;],
 664 nmh_cv_decl_ospeed_include_defines=yes,
 665 nmh_cv_decl_ospeed_include_defines=no)])
 666
 667 if test $nmh_cv_decl_ospeed_include_defines = no; then
 668   AC_CACHE_CHECK(if you must define ospeed,
 669   nmh_cv_decl_ospeed_must_define,
 670   [AC_TRY_LINK( ,[extern short ospeed; ospeed = 0;],
 671   nmh_cv_decl_ospeed_must_define=yes,
 672   nmh_cv_decl_ospeed_must_define=no)])
 673 fi
 674
 675 if test $nmh_cv_decl_ospeed_include_defines = yes; then
 676   AC_DEFINE(HAVE_OSPEED)dnl
 677 elif test $nmh_cv_decl_ospeed_must_define = yes; then
 678   AC_DEFINE(HAVE_OSPEED)
 679   AC_DEFINE(MUST_DEFINE_OSPEED)
 680 fi
 681
 682 dnl dnl Checks if tgetent accepts NULL and will
 683 dnl dnl allocate its own termcap buffer.
 684 dnl AC_CACHE_CHECK(if tgetent accepts NULL,
 685 dnl nmh_cv_func_tgetent_accepts_null,
 686 dnl [AC_TRY_RUN([main(){int i = tgetent((char*)0,"vt100");exit(!i || i == -1);}],
 687 dnl   nmh_cv_func_tgetent_accepts_null=yes,
 688 dnl   nmh_cv_func_tgetent_accepts_null=no,
 689 dnl   nmh_cv_func_tgetent_accepts_null=no)])
 690 dnl if test $nmh_cv_func_tgetent_accepts_null = yes; then
 691 dnl   AC_DEFINE(TGETENT_ACCEPTS_NULL)
 692 dnl fi
 693
 694 dnl Now put the libraries back to what it was before we
 695 dnl starting checking the termcap library.
 696 LIBS="$nmh_save_LIBS"
 697
 698 dnl --------------
 699 dnl CHECK TYPEDEFS
 700 dnl --------------
 701 AC_TYPE_SIGNAL
 702 AC_TYPE_PID_T
 703 AC_TYPE_OFF_T
 704 AC_TYPE_UID_T
 705 AC_TYPE_MODE_T
 706 AC_TYPE_SIZE_T
 707
 708 dnl Check for sigset_t.  Currently I'm looking in
 709 dnl <sys/types.h> and <signal.h>.  Others might need
 710 dnl to be added.
 711 AC_CACHE_CHECK(for sigset_t, nmh_cv_type_sigset_t,
 712 [AC_TRY_COMPILE(
 713 [#include <sys/types.h>
 714 #include <signal.h>], [sigset_t tempsigset;],
 715   nmh_cv_type_sigset_t=yes, nmh_cv_type_sigset_t=no)])
 716 if test $nmh_cv_type_sigset_t = no; then
 717   AC_DEFINE(sigset_t, unsigned int)
 718 fi
 719
 720 dnl ----------------
 721 dnl CHECK STRUCTURES
 722 dnl ----------------
 723 AC_STRUCT_ST_BLKSIZE
 724
 725 AC_CACHE_CHECK(for tm_gmtoff in struct tm, nmh_cv_struct_tm_gmtoff,
 726 [AC_TRY_COMPILE(
 727 [#ifdef TIME_WITH_SYS_TIME
 728 # include <sys/time.h>
 729 # include <time.h>
 730 #else
 731 # ifdef TM_IN_SYS_TIME
 732 #  include <sys/time.h>
 733 # else
 734 #  include <time.h>
 735 # endif
 736 #endif],
 737 [struct tm temptm; temptm.tm_gmtoff = 0;],
 738   nmh_cv_struct_tm_gmtoff=yes, nmh_cv_struct_tm_gmtoff=no)])
 739 if test $nmh_cv_struct_tm_gmtoff = yes; then
 740   AC_DEFINE(HAVE_TM_GMTOFF)
 741 fi
 742
 743 dnl -------------
 744 dnl CHECK SIGNALS
 745 dnl -------------
 746 dnl What style of signal do you have (POSIX, BSD, or SYSV)?
 747 AC_MSG_CHECKING(what style of signals to use)
 748 if test $ac_cv_func_sigaction = yes -a $ac_cv_func_sigprocmask = yes; then
 749   signals_style=POSIX_SIGNALS
 750   AC_DEFINE(POSIX_SIGNALS)
 751   AC_DEFINE(RELIABLE_SIGNALS)
 752 elif test $ac_cv_func_sigblock = yes -a $ac_cv_func_sigsetmask = yes; then
 753   signals_style=BSD_SIGNALS
 754   AC_DEFINE(BSD_SIGNALS)
 755   AC_DEFINE(RELIABLE_SIGNALS)
 756 elif test $ac_cv_func_sighold = yes -a $ac_cv_func_sigrelse = yes; then
 757   signals_style=SYSV_SIGNALS
 758   AC_DEFINE(SYSV_SIGNALS)
 759 else
 760   signals_style=NO_SIGNAL_BLOCKING
 761   AC_DEFINE(NO_SIGNAL_BLOCKING)
 762 fi
 763
 764 AC_MSG_RESULT($signals_style)
 765
 766 dnl Where is <signal.h> located?  Needed as input for signames.awk
 767 AC_CACHE_CHECK(where signal.h is located, nmh_cv_path_signal_h,
 768 [for SIGNAL_H in /usr/include/bsd/sys/signal.h  dnl Next
 769                  /usr/include/asm/signal.h      dnl Linux 1.3.0 and above
 770                  /usr/include/asm/signum.h      dnl some versions of Linux/Alpha
 771                  /usr/include/linux/signal.h    dnl Linux up to 1.2.11
 772                  /usr/include/sys/signal.h      dnl Almost everybody else
 773                  /dev/null;                     dnl Just in case we fall through
 774 do
 775   test -f $SIGNAL_H && \
 776   grep '#[      ]*define[       ][      ]*SIG[0-9A-Z]*[         ]*[0-9][0-9]*' $SIGNAL_H > /dev/null && \
 777   break
 778 done
 779 nmh_cv_path_signal_h=$SIGNAL_H
 780 ])
 781 SIGNAL_H=$nmh_cv_path_signal_h
 782 AC_SUBST(SIGNAL_H)dnl
 783
 784 dnl ----------------
 785 dnl OS SPECIFIC DEFINES
 786 dnl ----------------
 787 case "$target_os" in
 788
 789   solaris2*)
 790     AC_DEFINE(SYS5)
 791     AC_DEFINE(SVR4)
 792     ;;
 793   irix*)
 794     AC_DEFINE(SYS5)
 795     AC_DEFINE(SVR4)
 796     ;;
 797   osf*)
 798     AC_DEFINE(SYS5)
 799     AC_DEFINE(SVR4)
 800     ;;
 801   aix*)
 802     AC_DEFINE(SYS5)
 803     AC_DEFINE(SVR4)
 804     ;;
 805   sunos4*)
 806     AC_DEFINE(BSD42)
 807     ;;
 808   freebsd*)
 809     AC_DEFINE(BSD42)
 810     AC_DEFINE(BSD44)
 811     ;;
 812   netbsd*)
 813     AC_DEFINE(BSD42)
 814     AC_DEFINE(BSD44)
 815     ;;
 816   openbsd*)
 817     AC_DEFINE(BSD42)
 818     AC_DEFINE(BSD44)
 819     ;;
 820   bsd/os*)
 821     AC_DEFINE(BSD42)
 822     AC_DEFINE(BSD44)
 823     ;;
 824   sco5*)
 825     AC_DEFINE(SYS5)
 826     AC_DEFINE(SCO_5_STDIO)
 827     ;;
 828 esac
 829
 830
 831 dnl ----------------
 832 dnl OUTPUT MAKEFILES
 833 dnl ----------------
 834 AC_OUTPUT(Makefile config/Makefile h/Makefile sbr/Makefile uip/Makefile \
 835           mts/Makefile mts/smtp/Makefile \
 836           etc/Makefile docs/Makefile man/Makefile, \
 837           [test -z "$CONFIG_HEADERS" || echo > stamp-h])
 838
 839 dnl Umm, what's the point of these assignments??  -- <dan-nmh@dilvish.speed.net>
 840 eval "nmhbin=${bindir}";         eval "nmhbin2=${nmhbin}"
 841 eval "nmhsysconf=${sysconfdir}"; eval "nmhsysconf2=${nmhsysconf}"
 842 eval "nmhlib=${libdir}";         eval "nmhlib2=${nmhlib}"
 843 eval "nmhman=${mandir}"
 844
 845 pop_kinds=no
 846 if test x"$enable_pop" = x"yes"; then
 847   pop_kinds="yes ("
 848
 849   if test x"$enable_apop" = x"yes"; then
 850     pop_kinds="${pop_kinds}APOP "
 851   fi
 852
 853   if test x"$with_krb4" != x -a x"$with_krb4" != x"no"; then
 854     pop_kinds="${pop_kinds}KPOP "
 855   fi
 856
 857   pop_kinds="${pop_kinds}POP3)"
 858 fi
 859
 860 echo "
 861 nmh configuration
 862 -----------------
 863 nmh version                : ${VERSION}
 864 target os                  : ${target}
 865 compiler                   : ${CC}
 866 compiler flags             : ${CFLAGS}
 867 linker flags               : ${LDFLAGS}
 868 source code location       : ${srcdir}
 869 binary install path        : ${nmhbin2}
 870 libary install path        : ${nmhlib2}
 871 config files install path  : ${nmhsysconf2}
 872 man page install path      : ${nmhman}
 873 backup prefix              : ${backup_prefix}
 874 transport system           : ${MTS}
 875 file locking type          : ${LOCKTYPE}
 876 default smtp servers       : ${smtpservers}
 877 default editor             : ${editorpath}
 878 default pager              : ${pagerpath}
 879 email address masquerading : ${masquerade}
 880 pop is enabled             : ${pop_kinds}"
 881 echo ""