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

   1 dnl
   2 dnl configure.in -- autoconf template for nmh
   3 dnl
   4
   5 dnl Move this up a bit
   6 AC_PREREQ(2.61)
   7
   8 AC_INIT(nmh, m4_normalize(m4_include([VERSION])))
   9 AC_CONFIG_SRCDIR(h/nmh.h)
  10 AC_CONFIG_HEADER(config.h)
  11
  12 AC_CANONICAL_TARGET
  13
  14 dnl ---------------------
  15 dnl define a macro or two
  16 dnl ---------------------
  17
  18 AC_DEFUN(NMH_PROG_GNU_LIBTOOL, [
  19 if test -n "$LIBTOOL" ; then
  20   tmptest=`$LIBTOOL --version 2>&1 | grep GNU`
  21   if test x"$tmptest" != x  ; then
  22     GNU_LIBTOOL=1
  23     AC_SUBST(GNU_LIBTOOL)dnl
  24   fi
  25 fi
  26 ] )
  27
  28 echo "configuring for AC_PACKAGE_NAME-AC_PACKAGE_VERSION"
  29 AC_SUBST(VERSION,AC_PACKAGE_VERSION)dnl
  30
  31 dnl What date of nmh are we building?
  32 DATE=`cat ${srcdir}/DATE`
  33 echo "configuring for nmh dated $DATE"
  34 AC_SUBST(DATE)dnl
  35
  36 dnl --------------------------
  37 dnl CHECK COMMAND LINE OPTIONS
  38 dnl --------------------------
  39
  40 dnl Do you want to debug nmh?
  41 AC_ARG_ENABLE(debug,
  42   AS_HELP_STRING([--enable-debug],[enable nmh code debugging]))
  43 dnl The old redundant --enable-nmh-debug is deprecated and undocumented.
  44 if test x"$enable_nmh_debug" = x"yes"; then
  45   enable_debug=yes
  46 fi
  47
  48 dnl Allow users to send email from addresses other than their default?
  49 AC_ARG_ENABLE(masquerade,
  50   AS_HELP_STRING([--enable-masquerade='draft_from mmailid username_extension'],
  51     [enable up to 3 types of address masquerading]),
  52   [if test x"$enable_masquerade" = x"yes"; then
  53     masquerade="draft_from mmailid username_extension"
  54   else
  55     masquerade="$enable_masquerade"
  56   fi], [masquerade="draft_from mmailid username_extension"])
  57 AC_SUBST(masquerade)dnl
  58
  59 dnl Do you want mhe support?
  60 AC_ARG_ENABLE(mhe,
  61   AS_HELP_STRING([--disable-mhe],[disable mhe support]))
  62
  63 dnl mhe support is on by default, so define it unless --disable-mhe or the
  64 dnl deprecated, undocumented --disable-nmh-mhe are specified.
  65 if test x"$enable_mhe" != x"no" -a x"$enable_nmh_mhe" != x"no"; then
  66   AC_DEFINE(MHE, 1,
  67     [Define to compile in support for the Emacs front-end mh-e.])dnl
  68 fi
  69
  70 dnl Do you want client-side support for pop?
  71 AC_ARG_ENABLE(pop,
  72   AS_HELP_STRING([--enable-pop], [enable client-side support for plain POP3]))
  73 dnl The old redundant --enable-nmh-pop is deprecated and undocumented.
  74 if test x"$enable_nmh_pop" = x"yes"; then
  75   enable_pop=yes
  76 fi
  77
  78 dnl Do you want to disable use of locale functions
  79 AH_TEMPLATE([LOCALE],
  80 [Undefine if you don't want locale features.  By default this is defined.])
  81 AC_ARG_ENABLE([locale],
  82 AC_HELP_STRING([--disable-locale], [turn off locale features]),
  83 [if test x$enableval = xyes; then
  84   AC_DEFINE(LOCALE)
  85 fi],
  86 AC_DEFINE(LOCALE)
  87 )
  88
  89 dnl Do you want client-side support for using SASL for authentication?
  90 dnl Note that this code will be enabled for both POP and SMTP
  91 AC_ARG_WITH(cyrus-sasl, AS_HELP_STRING([--with-cyrus-sasl],
  92   [Enable SASL support via the Cyrus SASL library]))
  93 if test x"$with_cyrus_sasl" != x -a x"$with_cyrus_sasl" != x"no"; then
  94   AC_DEFINE(CYRUS_SASL, 1,
  95     [Define to use the Cyrus SASL library for authentication of POP and SMTP.])dnl
  96   if test x"$with_cyrus_sasl" != xyes; then
  97     AC_MSG_WARN([Arguments to --with-cyrus-sasl now ignored])
  98     AC_MSG_WARN([Please pass the appropriate arguments to CPPFLAGS/LDFLAGS])
  99   fi
 100   sasl_support=yes
 101 else
 102   sasl_support=no
 103 fi
 104
 105 dnl Do you want client-side support for encryption with TLS?
 106 AC_ARG_WITH(tls, AS_HELP_STRING([--with-tls], [Enable TLS support]))
 107 if test x"$with_tls" != x -a x"$with_tls" != x"no"; then
 108   AC_DEFINE(TLS_SUPPORT, 1, [Support TLS for session encryption.])dnl
 109   tls_support=yes
 110 else
 111   tls_support=no
 112 fi
 113
 114 dnl What should be the default editor?
 115 AC_ARG_WITH(editor,
 116   AS_HELP_STRING([--with-editor=EDITOR],[specify the default editor]))
 117
 118 if test -n "$with_editor"; then
 119   editorpath="$with_editor"
 120 fi
 121
 122 dnl Set the backup prefix
 123 AC_ARG_WITH([hash-backup],
 124   AS_HELP_STRING([--with-hash-backup],[use # as the backup prefix (default: ,)]))
 125 if test x"$with_hash_backup" != x -a x"$with_hash_backup" != x"no"; then
 126   backup_prefix="#"
 127 else
 128   backup_prefix=","
 129 fi
 130 AC_DEFINE_UNQUOTED(BACKUP_PREFIX, "$backup_prefix",
 131     [The prefix that is prepended to the name of message files when they are "removed" by rmm. This should typically be `,' or `#'.])dnl
 132
 133 dnl After we know if we're including apop and kpop support, do pop stuff
 134 if test x"$enable_pop" = x"yes"; then
 135   AC_DEFINE(POP, 1,
 136     [Define this to compile client-side support for pop into inc and msgchk.])dnl
 137   POPLIB=popsbr.o
 138   POPSED='/^%nmhbeginpop%/d;/^%nmhendpop%/d'
 139 else
 140   POPSED='/^%nmhbeginpop%/,/^%nmhendpop%/d'
 141 fi
 142 AC_SUBST(POPLIB)dnl
 143 AC_SUBST(POPSED)dnl
 144
 145 dnl What method of locking to use?
 146 AC_ARG_WITH(locking,
 147   AS_HELP_STRING([--with-locking=@<:@dot|fcntl|flock|lockf@:>@],
 148   [specify the file locking method]))
 149
 150 if test x"$with_locking" = x"dot"; then
 151   LOCKTYPE="dot"
 152   AC_DEFINE(DOT_LOCKING, 1, [Define to use dot based file locking.])dnl
 153 elif test x"$with_locking" = x"flock"; then
 154   LOCKTYPE="flock"
 155   AC_DEFINE(FLOCK_LOCKING, 1, [Define to use flock() based locking.])dnl
 156 elif test x"$with_locking" = x"lockf"; then
 157   LOCKTYPE="lockf"
 158   AC_DEFINE(LOCKF_LOCKING, 1, [Define to use lockf() based locking.])dnl
 159 elif test x"$with_locking" = x"fcntl"; then
 160   LOCKTYPE="fcntl"
 161   AC_DEFINE(FCNTL_LOCKING, 1, [Define to use fnctl() based locking.])dnl
 162 else
 163   LOCKTYPE="dot"
 164   AC_DEFINE(DOT_LOCKING)dnl
 165 fi
 166
 167 dnl What method of posting should post use?
 168 AC_ARG_WITH(mts,
 169   AS_HELP_STRING([--with-mts=@<:@smtp|sendmail@:>@],
 170   [specify the default mail transport agent/service]))
 171
 172 if test x"$with_mts" = x"smtp"; then
 173   MTS="smtp"
 174 elif test x"$with_mts" = x"sendmail"; then
 175   MTS="sendmail"
 176 else
 177   MTS="smtp"
 178 fi
 179 AC_SUBST(MTS)dnl
 180
 181 dnl Both the smtp and sendmail mail transport services use the smtp code
 182 AC_DEFINE(SMTPMTS, 1,
 183   [Define if you want SMTP (simple mail transport protocol) support.])dnl
 184
 185 dnl What should be the default pager?
 186 AC_ARG_WITH(pager,
 187   AS_HELP_STRING([--with-pager=PAGER],[specify the default pager]))
 188
 189 if test -n "$with_pager"; then
 190   pagerpath="$with_pager"
 191 fi
 192
 193 dnl What should be the default mail server(s)?
 194 AC_ARG_WITH(smtpservers,
 195   AS_HELP_STRING([--with-smtpservers='SMTPSERVER1@<:@ SMTPSERVER2...@:>@'],
 196   [specify the default SMTP server(s) @<:@localhost@:>@]))
 197 if test -n "$with_smtpservers"; then
 198   smtpservers="$with_smtpservers"
 199 else
 200   smtpservers="localhost"
 201 fi
 202 AC_SUBST(smtpservers)dnl
 203
 204 dnl ----------------------------------------------------
 205 dnl Default location is /usr/local/nmh/{bin,etc,lib,man}
 206 dnl ----------------------------------------------------
 207 AC_PREFIX_DEFAULT(/usr/local/nmh)
 208
 209 dnl ------------------
 210 dnl CHECK THE COMPILER
 211 dnl ------------------
 212 dnl We want these before the checks,
 213 dnl so the checks can modify their values.
 214 test -z "$CFLAGS" && CFLAGS= auto_cflags=1
 215 if test x"$enable_debug" = x"yes"; then
 216   test -z "$LDFLAGS" && LDFLAGS=-g
 217 fi
 218
 219 AC_PROG_CC
 220
 221 AC_CACHE_CHECK(whether compiler supports -Wno-pointer-sign, nmh_cv_has_noptrsign,
 222 [nmh_saved_cflags="$CFLAGS"
 223  CFLAGS="$CFLAGS -Wno-pointer-sign"
 224  AC_TRY_COMPILE([],[],nmh_cv_has_noptrsign=yes,nmh_cv_has_noptrsign=no)
 225  CFLAGS="$nmh_saved_cflags"])
 226
 227 dnl if the user hasn't specified CFLAGS, then
 228 dnl   if compiler is gcc, then
 229 dnl     use -O2 and some warning flags
 230 dnl   else use -O
 231 dnl We use -Wall; if the compiler supports it we also use -Wno-pointer-sign,
 232 dnl because gcc 4 now produces a lot of new warnings which are probably mostly
 233 dnl spurious and which in any case we don't want to deal with now.
 234 if test "$nmh_cv_has_noptrsign" = "yes"; then
 235         nmh_gcc_warnflags="-Wall -Wno-pointer-sign"
 236 else
 237         nmh_gcc_warnflags="-Wall"
 238 fi
 239
 240 if test -n "$auto_cflags"; then
 241   if test x"$enable_debug" = x"yes"; then
 242     if test -n "$GCC"; then
 243       test -z "$CFLAGS" && CFLAGS="$nmh_gcc_warnflags -g" || CFLAGS="$CFLAGS $nmh_gcc_warnflags -g"
 244     else
 245       test -z "$CFLAGS" && CFLAGS=-g || CFLAGS="$CFLAGS -g"
 246     fi
 247   else
 248     if test -z "$LDFLAGS"; then
 249       case "$build_os" in
 250         darwin*)
 251           LDFLAGS=
 252           ;;
 253         *)
 254           LDFLAGS=-s
 255           ;;
 256       esac
 257     fi
 258     if test -n "$GCC"; then
 259       test -z "$CFLAGS" && CFLAGS="$nmh_gcc_warnflags -O2" || CFLAGS="$CFLAGS $nmh_gcc_warnflags -O2"
 260     else
 261       test -z "$CFLAGS" && CFLAGS=-O  || CFLAGS="$CFLAGS -O"
 262     fi
 263   fi
 264 fi
 265
 266 AC_C_CONST              dnl Does compiler support `const'.
 267
 268 dnl ------------------
 269 dnl CHECK FOR PROGRAMS
 270 dnl ------------------
 271 AC_PROG_MAKE_SET        dnl Does make define $MAKE
 272 AC_PROG_INSTALL         dnl Check for BSD compatible `install'
 273 AC_PROG_RANLIB          dnl Check for `ranlib'
 274 AC_PROG_AWK             dnl Check for mawk,gawk,nawk, then awk
 275 AC_PROG_LEX             dnl Check for lex/flex
 276
 277 dnl Look for `cut'
 278 pathtmp=/usr/bin:/bin:/usr/local/bin:/usr/xpg4/bin:/usr/ucb
 279 AC_PATH_PROG(cutpath, cut, no, [$pathtmp])
 280
 281 dnl ----------------------------------------------
 282 dnl check for lclint, and lint if it doesn't exist
 283 dnl ----------------------------------------------
 284 AC_CHECK_PROG(linttmp1, lclint, lclint, no)dnl
 285 if test x$ac_cv_prog_linttmp1 != xno ; then
 286   LINT=$ac_cv_prog_linttmp1
 287   LINTFLAGS="-weak +posixlib -macrovarprefixexclude"
 288 else
 289   AC_CHECK_PROG(linttmp2, lint, lint, no)dnl
 290   if test x$ac_cv_prog_linttmp2 != xno ; then
 291     LINT=$ac_cv_prog_linttmp2
 292     LINTFLAGS=""
 293   else
 294     LINT="echo 'No lint program found'"
 295     LINTFLAGS=""
 296   fi
 297 fi
 298 AC_SUBST(LINT)dnl
 299 AC_SUBST(LINTFLAGS)dnl
 300
 301 dnl try to figure out which one we've got
 302 AC_CHECK_PROG(LIBTOOL, libtool, libtool, , [$pathtmp])
 303 NMH_PROG_GNU_LIBTOOL
 304
 305 dnl Check for lorder and tsort commands
 306 AC_CHECK_PROG(LORDER, lorder, lorder, no)dnl
 307 AC_CHECK_PROG(TSORT, tsort, tsort, no)dnl
 308
 309 dnl If either doesn't exist, replace them with echo and cat
 310 if test x$ac_cv_prog_LORDER != xlorder -o x$ac_cv_prog_TSORT != xtsort; then
 311   LORDER=echo
 312   TSORT=cat
 313   AC_SUBST(LORDER)dnl
 314   AC_SUBST(TSORT)dnl
 315 dnl Mac OS X has lorder, but sh is too broken for it to work
 316 dnl elif test -z "`lorder config/config.c 2>&1 | grep config/config.c`" ; then
 317 dnl   LORDER=echo
 318 dnl   TSORT=cat
 319 dnl   AC_SUBST(LORDER)dnl
 320 dnl   AC_SUBST(TSORT)dnl
 321 fi
 322
 323 dnl Check whether tsort can deal with loops
 324 AC_CACHE_CHECK(whether tsort can deal with loops, nmh_cv_tsort_loop,
 325   [if test -z "`echo a b b a | tsort 2>/dev/null | grep a`" ; then
 326     nmh_cv_tsort_loop=no
 327   else
 328     nmh_cv_tsort_loop=yes
 329   fi])
 330 if test x$nmh_cv_tsort_loop = xno ; then
 331   LORDER=echo
 332   TSORT=cat
 333   AC_SUBST(LORDER)dnl
 334   AC_SUBST(TSORT)dnl
 335 fi
 336
 337 dnl Look for `ls'
 338 pathtmp=/usr/bin:/bin:/usr/local/bin:/usr/xpg4/bin:/usr/ucb
 339 AC_PATH_PROG(lspath, ls, no, [$pathtmp])
 340
 341 dnl See how we get ls to display the owner and the group
 342 if test "$lspath" != "no"; then
 343   AC_CACHE_CHECK(how to get ls to show us the group ownership of a file,
 344                  nmh_cv_ls_grpopt,
 345   [if test x"`$lspath -dl / | $AWK '{print $9}'`" = x"/"; then
 346     dnl There were 9 parameters, so unless this is a really bizarre, nonstandard
 347     dnl ls, it would seem -l gave us both the user and group.  On this type of
 348     dnl ls, -g makes _only_ the group be displayed (and not the user).
 349     nmh_cv_ls_grpopt="-l"
 350   else
 351     dnl Looks like -l only gave us the user, so we need -g to get the group too.
 352     nmh_cv_ls_grpopt="-lg"
 353   fi])
 354 fi
 355
 356 dnl Look for `more'
 357 pathtmp=/usr/bin:/bin:/usr/ucb:/usr/local/bin
 358 AC_PATH_PROG(morepath, more, no, [$pathtmp])
 359
 360 dnl If pager is not specified yet,
 361 dnl then use `more' as the default.
 362 if test -z "$pagerpath"; then
 363   pagerpath="$morepath"
 364 fi
 365 AC_SUBST(pagerpath)dnl
 366
 367 dnl Look for `sendmail'
 368 pathtmp=/usr/lib:/usr/sbin:/usr/etc:/usr/ucblib:/usr/bin:/bin
 369 AC_PATH_PROG(sendmailpath, sendmail, /usr/sbin/sendmail, [$pathtmp])
 370
 371 dnl Look for `vi'
 372 pathtmp=/usr/bin:/bin:/usr/ucb:/usr/local/bin
 373 AC_PATH_PROG(vipath, vi, /bin/vi, [$pathtmp])
 374
 375 dnl If editor is not specified yet,
 376 dnl then use `vi' as the default.
 377 if test -z "$editorpath"; then
 378   editorpath="$vipath"
 379 fi
 380 AC_SUBST(editorpath)dnl
 381
 382 dnl ----------------------------------------------------------
 383 dnl FIND MAIL SPOOL AND SEE IF WE NEED TO MAKE inc SETGID MAIL
 384 dnl ----------------------------------------------------------
 385 AC_CACHE_CHECK(where mail spool is located, nmh_cv_mailspool,
 386 [for mailspool in /var/mail        dnl
 387                   /var/spool/mail  dnl
 388                   /usr/spool/mail  dnl
 389                   /dev/null;       dnl Just in case we fall through
 390 do
 391   test -d $mailspool && break
 392 done
 393 nmh_cv_mailspool=$mailspool
 394 ])
 395 mailspool=$nmh_cv_mailspool
 396 AC_SUBST(mailspool)dnl
 397
 398 dnl See whether the mail spool directory is world-writable.
 399 if test "$lspath" != "no" -a "$cutpath" != "no"; then
 400   AC_CACHE_CHECK(whether the mail spool is world-writable,
 401                  nmh_cv_mailspool_world_writable,
 402   [if test "`$lspath -dlL $mailspool | $cutpath -c9`" = "-"; then
 403     nmh_cv_mailspool_world_writable=no
 404   else
 405     nmh_cv_mailspool_world_writable=yes
 406   fi])
 407 fi
 408
 409 dnl Also, check for liblockfile (as found on Debian systems)
 410 AC_CHECK_HEADER(lockfile.h, AC_CHECK_LIB(lockfile, lockfile_create) )
 411
 412 dnl and whether its companion program dotlockfile is setgid
 413 AC_PATH_PROG(dotlockfilepath, dotlockfile, no)
 414 if test "$ac_cv_lib_lockfile_lockfile_create" != "no" ; then
 415   if test "$ac_cv_path_dotlockfilepath" != "no" ; then
 416     AC_CACHE_CHECK(whether dotlockfile is setgid, nmh_cv_dotlockfile_setgid,
 417     [ if test -g "$ac_cv_path_dotlockfilepath" ; then
 418         nmh_cv_dotlockfile_setgid=yes
 419       else
 420         nmh_cv_dotlockfile_setgid=no
 421       fi])
 422   fi
 423 fi
 424
 425 dnl If mailspool is not world-writable and dotlockfile is not setgid,
 426 dnl we need to #define MAILGROUP to 1 and make inc setgid.
 427 if test x"$LOCKTYPE" = x"dot" -a x"$nmh_cv_mailspool_world_writable" = x"no" -a x"$nmh_cv_dotlockfile_setgid" != x"yes" ; then
 428   dnl do we really need both of these?
 429   AC_DEFINE(MAILGROUP,1,
 430     [Define to 1 if you need to make `inc' set-group-id because your mail spool is not world writable. There are no guarantees as to the safety of doing this, but this #define will add some extra security checks.])dnl
 431   SETGID_MAIL=1
 432 fi
 433 AC_SUBST(SETGID_MAIL)dnl
 434
 435 dnl Use ls to see which group owns the mail spool directory.
 436 AC_CACHE_CHECK(what group owns the mail spool, nmh_cv_ls_mail_grp,
 437 [nmh_cv_ls_mail_grp=`$lspath -dL $nmh_cv_ls_grpopt $mailspool|$AWK '{print $4}'`
 438 ])
 439 MAIL_SPOOL_GRP=$nmh_cv_ls_mail_grp
 440 AC_SUBST(MAIL_SPOOL_GRP)dnl
 441
 442 dnl ------------------
 443 dnl CHECK HEADER FILES
 444 dnl ------------------
 445
 446 dnl On glibc we need to define at least the '_XOPEN_SOURCE' level of features,
 447 dnl or wchar.h doesn't declare a prototype for wcwidth(). But if we only define
 448 dnl that level then db.h won't compile. So we define _GNU_SOURCE which turns
 449 dnl on everything. Perhaps other OSes need some feature switch set to get wcwidth()
 450 dnl declared; if so they should have an entry added to this case statement.
 451 dnl NB that we must define this on the compiler command line, not in config.h,
 452 dnl because it must be set before any system header is included and there's no
 453 dnl portable way to make sure that files generated by lex include config.h
 454 dnl before system header files.
 455
 456 case "$target_os" in
 457   linux*)
 458     # Like DEFS, but doesn't get stomped on by configure when using config.h:
 459     OURDEFS="$OURDEFS -D_GNU_SOURCE"
 460     ;;
 461 esac
 462 AC_SUBST(OURDEFS)
 463
 464 AC_HEADER_DIRENT
 465 AC_HEADER_STDC
 466 AC_HEADER_TIME
 467 AC_HEADER_SYS_WAIT
 468 AC_HEADER_STAT
 469 AC_HEADER_TIOCGWINSZ
 470 AC_CHECK_HEADERS(errno.h fcntl.h crypt.h termcap.h \
 471                  langinfo.h wchar.h wctype.h iconv.h netdb.h \
 472                  sys/param.h sys/time.h sys/stream.h)
 473
 474 dnl
 475 dnl Checks for _IO_write_ptr. A Linuxism used by nmh on linux. We
 476 dnl really use a whole set of them, but this check should be
 477 dnl sufficient.
 478 dnl
 479 AC_CHECK_HEADER(libio.h, [
 480   AC_EGREP_HEADER(_IO_write_ptr, libio.h, [
 481     AC_DEFINE(LINUX_STDIO,1,[Use the Linux _IO_*_ptr defines from <libio.h>.]) ]) ])
 482
 483 AC_CHECK_HEADER([sys/ptem.h], AC_DEFINE(WINSIZE_IN_PTEM,1,
 484   [Define to 1 if `struct winsize' requires <sys/ptem.h>.]),,
 485 [[#if HAVE_SYS_STREAM_H
 486 #  include <sys/stream.h>
 487 #endif
 488 ]])
 489
 490 dnl ---------------
 491 dnl CHECK FUNCTIONS
 492 dnl ---------------
 493 AC_CHECK_FUNCS(waitpid wait3 sigaction sigprocmask sigblock sigsetmask \
 494                sighold sigrelse writev lstat uname tzset mkstemp \
 495                getutent nl_langinfo mbtowc wcwidth)
 496
 497 dnl sigsetjmp may be a macro
 498 AC_MSG_CHECKING(for sigsetjmp)
 499 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <setjmp.h>]],
 500   [[sigsetjmp((void *)0, 0);]])],[AC_DEFINE(HAVE_SIGSETJMP, 1,
 501     [Define to 1 if you have the `sigsetjmp'.]) AC_MSG_RESULT(yes)],
 502   [AC_MSG_RESULT(no)])
 503
 504 dnl Look for the initgroups() declaration.  On AIX 4.[13], Solaris 4.1.3, and
 505 dnl ULTRIX 4.2A the function is defined in libc but there's no declaration in
 506 dnl any system header.
 507 dnl
 508 dnl On Solaris 2.[456], the declaration is in <grp.h>.  On HP-UX 9-11 and
 509 dnl (reportedly) FreeBSD 3.[23], it's in <unistd.h>.  Any other locations we
 510 dnl need to check?
 511 AH_TEMPLATE(INITGROUPS_HEADER, [Define to the header containing the declaration of `initgroups'.])
 512 AC_EGREP_HEADER(initgroups, grp.h, AC_DEFINE(INITGROUPS_HEADER, <grp.h>),
 513                 AC_EGREP_HEADER(initgroups, unistd.h,
 514                                 AC_DEFINE(INITGROUPS_HEADER, <unistd.h>)))
 515
 516 dnl On AIX 4.1, snprintf() is defined in libc.a but there's no prototype in
 517 dnl <stdio.h> or elsewhere.  Apparently it's not officially supported (though it
 518 dnl seems to work perfectly and IBM apparently uses it in internal code).
 519 dnl Anyhow, if we omit our own snprintf() and vsnprintf() prototypes when we
 520 dnl HAVE_SNPRINTF, we get a billion warnings at compile time.  Use the C
 521 dnl preprocessor to preprocess stdio.h and make sure that there's actually a
 522 dnl prototype.
 523 AC_EGREP_HEADER(snprintf, stdio.h, AC_DEFINE(HAVE_SNPRINTF_PROTOTYPE,1,
 524   [Define to 1 if <stdio.h> has a prototype for snprintf().]))
 525
 526 dnl Check for multibyte character set support
 527 if test "x$ac_cv_header_wchar_h" = "xyes" -a "x$ac_cv_header_wctype_h" = "xyes" \
 528     -a "x$ac_cv_func_wcwidth" = "xyes" -a "x$ac_cv_func_mbtowc" = "xyes"; then
 529   AC_DEFINE(MULTIBYTE_SUPPORT, 1,
 530     [Define to enable support for multibyte character sets.])
 531 fi
 532
 533 dnl -------------------
 534 dnl CHECK FOR LIBRARIES
 535 dnl -------------------
 536 dnl Check location of modf
 537 AC_CHECK_FUNC(modf, , AC_CHECK_LIB(m, modf))
 538
 539 dnl Checks for network libraries (nsl, socket)
 540 AC_CHECK_NETLIBS
 541
 542 termcap_curses_order="termcap curses ncurses"
 543 for lib in $termcap_curses_order; do
 544   AC_CHECK_LIB(${lib}, tgetent, [TERMLIB="-l$lib"; break])
 545 done
 546 AC_SUBST(TERMLIB)dnl
 547
 548 dnl ---------------
 549 dnl CHECK FOR ICONV
 550 dnl ---------------
 551
 552 dnl Find iconv. It may be in libiconv and may be iconv() or libiconv()
 553 if test "x$ac_cv_header_iconv_h" = "xyes"; then
 554   AC_CHECK_FUNC(iconv, ac_found_iconv=yes, ac_found_iconv=no)
 555   if test "x$ac_found_iconv" = "xno"; then
 556     AC_CHECK_LIB(iconv, iconv, ac_found_iconv=yes)
 557     if test "x$ac_found_iconv" = "xno"; then
 558       AC_CHECK_LIB(iconv, libiconv, ac_found_iconv=yes)
 559     fi
 560     if test "x$ac_found_iconv" != "xno"; then
 561       LIBS="-liconv $LIBS"
 562     fi
 563   else
 564     dnl Handle case where there is a native iconv but iconv.h is from libiconv
 565     AC_CHECK_DECL(_libiconv_version,
 566       [ AC_CHECK_LIB(iconv, libiconv, LIBS="-liconv $LIBS") ],,
 567       [ #include <iconv.h> ])
 568   fi
 569 fi
 570 if test "x$ac_found_iconv" = xyes; then
 571   AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
 572 fi
 573
 574 dnl Check if iconv uses const in prototype declaration
 575 if test "x$ac_found_iconv" = "xyes"; then
 576   AC_CACHE_CHECK(for iconv declaration, ac_cv_iconv_const,
 577     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
 578         #include <iconv.h>]],
 579         [[#ifdef __cplusplus
 580           "C"
 581           #endif
 582           #if defined(__STDC__) || defined(__cplusplus)
 583           size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
 584           #else
 585           size_t iconv();
 586           #endif]])],
 587       [ac_cv_iconv_const=],
 588       [ac_cv_iconv_const=const])])
 589   AC_DEFINE_UNQUOTED([ICONV_CONST], $ac_cv_iconv_const,
 590     [Define as const if the declaration of iconv() needs const.])
 591 fi
 592
 593 dnl --------------
 594 dnl CHECK FOR NDBM
 595 dnl --------------
 596
 597 AC_ARG_WITH([ndbm],AS_HELP_STRING([--with-ndbm=ARG],[use -lARG to link with ndbm]),
 598             [nmh_ndbm=$withval],[nmh_ndbm=autodetect])
 599 AC_ARG_WITH([ndbmheader],AS_HELP_STRING([--with-ndbmheader=ARG],[#include <ARG> to use ndbm]),
 600             [nmh_ndbmheader=$withval],[nmh_ndbmheader=autodetect])
 601
 602 if test "$nmh_ndbm" = "autodetect"; then
 603   if test "$nmh_ndbmheader" != "autodetect"; then
 604     AC_MSG_ERROR([must specify both --with-ndbm and --with-ndbmheader or neither])
 605   else
 606
 607     dnl There are at least four implementations of ndbm, and
 608     dnl several of those can be in different places at the whim
 609     dnl of the system integrator. A good summary of this mess
 610     dnl can be found at http://www.unixpapa.com/incnote/dbm.html
 611
 612     dnl Classic ndbm with no library required (eg NetBSD): try this
 613     dnl first so we don't accidentally link in a pointless but harmless
 614     dnl library in one of the later ndbm.h+libfoo tests:
 615     NMH_CHECK_NDBM(ndbm.h,,,
 616     dnl Berkeley DBv2 emulating ndbm: header in db.h:
 617       NMH_CHECK_NDBM(db.h,db,,
 618     dnl Berkeley DBv1 emulating ndbm:
 619         NMH_CHECK_NDBM(ndbm.h,db,,
 620           NMH_CHECK_NDBM(ndbm.h,db1,,
 621     dnl Classic ndbm:
 622             NMH_CHECK_NDBM(ndbm.h,ndbm,,
 623     dnl glibc2.1 systems put db1 in a subdir:
 624               NMH_CHECK_NDBM(db1/ndbm.h,db1,,
 625     dnl GNU gdbm emulating ndbm, with header possibly in gdbm/
 626     dnl and possibly needing gbdm_compat library:
 627                 NMH_CHECK_NDBM(gdbm/ndbm.h,gdbm,,
 628                   NMH_CHECK_NDBM(gdbm/ndbm.h,gdbm_compat -lgdbm,,
 629                     NMH_CHECK_NDBM(ndbm.h,gdbm,,
 630                       NMH_CHECK_NDBM(ndbm.h,gdbm_compat -lgdbm))))))))))
 631
 632   fi
 633 else
 634   dnl We don't really need to check that the user-specified values work,
 635   dnl but it is a convenience to the user to bomb out early rather than
 636   dnl after configure and half the compile process.
 637   NMH_CHECK_NDBM([$nmh_ndbmheader],[$nmh_ndbm])
 638 fi
 639
 640 if test "$nmh_ndbm_found" = "no"; then
 641   AC_MSG_ERROR([could not find a working ndbm library/header combination])
 642 else
 643   dnl Now export the lib/header to our makefile/config.h:
 644   if test x"$nmh_ndbmheader" != x; then
 645     AC_DEFINE_UNQUOTED(NDBM_HEADER, <$nmh_ndbmheader>,
 646       [Define to the header containing the ndbm API prototypes.])
 647   fi
 648   if test x"$nmh_ndbm" != x; then
 649     NDBM_LIBS="-l$nmh_ndbm"
 650   else
 651     NDBM_LIBS=
 652   fi
 653   AC_SUBST(NDBM_LIBS)
 654 fi
 655
 656 dnl ------------------
 657 dnl Set RPM build root
 658 dnl ------------------
 659 dnl nmhrpm is used in the final summary, see below.  The default value is
 660 dnl reported there as ./RPM, consistent with the reporting of the default
 661 dnl source code location as ., but its absolute path is used in the Makefile.
 662 AC_ARG_WITH(rpmdir,
 663   AS_HELP_STRING([--with-rpmdir=RPMDIR], [RPM build directory @<:@RPM@:>@]))
 664   AS_IF([test x"$with_rpmdir" = x], [rpmdir='$(abs_srcdir)/RPM'; nmhrpm=./RPM],
 665           [rpmdir="$with_rpmdir"; eval "nmhrpm=${rpmdir}"])
 666 AC_SUBST(rpmdir)
 667
 668
 669 dnl --------------------
 670 dnl CHECK FOR CYRUS-SASL
 671 dnl --------------------
 672
 673 AS_IF([test x"$sasl_support" = x"yes"],[
 674   AC_CHECK_HEADER([sasl/sasl.h], , [AC_MSG_ERROR([sasl.h not found])])
 675   AC_CHECK_LIB([sasl2], [sasl_client_new], ,
 676     [AC_MSG_ERROR([Cyrus SASL library not found])])])
 677
 678 dnl -----------------
 679 dnl CHECK FOR OPENSSL
 680 dnl -----------------
 681
 682 AS_IF([test x"$tls_support" = x"yes"],[
 683   AC_CHECK_HEADER([openssl/ssl.h], , [AC_MSG_ERROR([openssl/ssl.h not found])])
 684   AC_CHECK_LIB([crypto], [BIO_write], ,
 685     [AC_MSG_ERROR([OpenSSL crypto library not found])])
 686   AC_CHECK_LIB([ssl], [SSL_library_init], ,
 687     [AC_MSG_ERROR([OpenSSL library not found])])])
 688
 689 dnl ---------------------
 690 dnl CHECK TERMCAP LIBRARY
 691 dnl ---------------------
 692
 693 dnl Add the termcap library, so that the following configure
 694 dnl tests will find it when it tries to link test programs.
 695 nmh_save_LIBS="$LIBS"
 696 LIBS="$TERMLIB $LIBS"
 697
 698 dnl Check if tgetent accepts NULL (and will allocate its own termcap buffer)
 699 dnl Some termcaps reportedly accept a zero buffer, but then dump core
 700 dnl in tgetstr().
 701 dnl Under Cygwin test program crashes but exit code is still 0. So,
 702 dnl we test for a file that porgram should create
 703 AH_TEMPLATE([TGETENT_ACCEPTS_NULL],
 704 [Define to 1 if tgetent() accepts NULL as a buffer.])
 705 AC_CACHE_CHECK(if tgetent accepts NULL,
 706 nmh_cv_func_tgetent_accepts_null,
 707 [AC_TRY_RUN([
 708 main()
 709 {
 710     char buf[4096];
 711     int r1 = tgetent(buf, "vt100");
 712     int r2 = tgetent((char*)0,"vt100");
 713     if (r1 >= 0 && r1 == r2) {
 714         char tbuf[1024], *u;
 715         u = tbuf;
 716         tgetstr("cl", &u);
 717         creat("conftest.tgetent", 0640);
 718     }
 719     exit((r1 != r2) || r2 == -1);
 720 }
 721 ],
 722   if test -f conftest.tgetent; then
 723     nmh_cv_func_tgetent_accepts_null=yes
 724   else
 725     nmh_cv_func_tgetent_accepts_null=no
 726   fi,
 727   nmh_cv_func_tgetent_accepts_null=no,
 728   nmh_cv_func_tgetent_accepts_null=no)])
 729 if test x$nmh_cv_func_tgetent_accepts_null = xyes; then
 730   AC_DEFINE(TGETENT_ACCEPTS_NULL)
 731 fi
 732 AC_CACHE_CHECK(if tgetent returns 0 on success,
 733 nmh_cv_func_tgetent_zero_success,
 734 [AC_TRY_RUN([
 735 main()
 736 {
 737     char buf[4096];
 738     int r1 = tgetent(buf, "!@#$%^&*");
 739     int r2 = tgetent(buf, "vt100");
 740     if (r1 < 0 && r2 == 0) {
 741         char tbuf[1024], *u;
 742         u = tbuf;
 743         tgetstr("cl", &u);
 744         creat("conftest.tgetent0", 0640);
 745     }
 746     exit(r1 == r2);
 747 }
 748 ],
 749   if test -f conftest.tgetent0; then
 750     nmh_cv_func_tgetent_zero_success=yes
 751   else
 752     nmh_cv_func_tgetent_zero_success=no
 753   fi,
 754   nmh_cv_func_tgetent_zero_success=no,
 755   nmh_cv_func_tgetent_zero_success=no)])
 756 AH_TEMPLATE([TGETENT_SUCCESS],
 757 [Define to what tgetent() returns on success (0 on HP-UX X/Open curses).])
 758 if test x$nmh_cv_func_tgetent_zero_success = xyes; then
 759   AC_DEFINE(TGETENT_SUCCESS, 0)
 760 else
 761   AC_DEFINE(TGETENT_SUCCESS, 1)
 762 fi
 763
 764 dnl Now put the libraries back to what it was before we
 765 dnl starting checking the termcap library.
 766 LIBS="$nmh_save_LIBS"
 767
 768 dnl --------------
 769 dnl CHECK TYPEDEFS
 770 dnl --------------
 771 AC_TYPE_SIGNAL
 772 AC_TYPE_PID_T
 773 AC_TYPE_OFF_T
 774 AC_TYPE_UID_T
 775 AC_TYPE_MODE_T
 776 AC_TYPE_SIZE_T
 777
 778 dnl Check for sigset_t.  Currently I'm looking in
 779 dnl <sys/types.h> and <signal.h>.  Others might need
 780 dnl to be added.
 781 AC_CACHE_CHECK(for sigset_t, nmh_cv_type_sigset_t,
 782 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
 783 #include <signal.h>]], [[sigset_t tempsigset;]])],
 784 nmh_cv_type_sigset_t=yes,nmh_cv_type_sigset_t=no)])
 785 if test $nmh_cv_type_sigset_t = no; then
 786   AC_DEFINE(sigset_t, unsigned int,
 787     [Define to `unsigned int' if <sys/types.h> or <signal.h> doesn't define.])
 788 fi
 789
 790 dnl ----------------
 791 dnl CHECK STRUCTURES
 792 dnl ----------------
 793 AC_CHECK_MEMBERS(struct stat.st_blksize)
 794
 795 AC_CHECK_MEMBERS(struct tm.tm_gmtoff,,,
 796   [#ifdef TIME_WITH_SYS_TIME
 797 # include <sys/time.h>
 798 # include <time.h>
 799 #else
 800 # ifdef TM_IN_SYS_TIME
 801 #  include <sys/time.h>
 802 # else
 803 #  include <time.h>
 804 # endif
 805 #endif])
 806
 807 AC_CHECK_MEMBERS(struct utmp.ut_type,,,[#include <utmp.h>])
 808
 809 CHECK_TYPE_STRUCT_DIRENT_D_TYPE()
 810
 811 dnl -------------
 812 dnl CHECK SIGNALS
 813 dnl -------------
 814 dnl What style of signal do you have (POSIX, BSD, or SYSV)?
 815 AH_TEMPLATE(RELIABLE_SIGNALS, [Define to 1 if you have reliable signals.])
 816 AC_MSG_CHECKING(what style of signals to use)
 817 if test $ac_cv_func_sigaction = yes -a $ac_cv_func_sigprocmask = yes; then
 818   signals_style=POSIX_SIGNALS
 819   AC_DEFINE(POSIX_SIGNALS, 1,
 820     [Define to 1 if you use POSIX style signal handling.])
 821   AC_DEFINE(RELIABLE_SIGNALS)
 822 elif test $ac_cv_func_sigblock = yes -a $ac_cv_func_sigsetmask = yes; then
 823   signals_style=BSD_SIGNALS
 824   AC_DEFINE(BSD_SIGNALS,1,
 825     [Define to 1 if you use BSD style signal handling (and can block signals).])
 826   AC_DEFINE(RELIABLE_SIGNALS)
 827 elif test $ac_cv_func_sighold = yes -a $ac_cv_func_sigrelse = yes; then
 828   signals_style=SYSV_SIGNALS
 829   AC_DEFINE(SYSV_SIGNALS,1,
 830     [Define to 1 if you use SYSV style signal handling (and can block signals).])
 831 else
 832   signals_style=NO_SIGNAL_BLOCKING
 833   AC_DEFINE(NO_SIGNAL_BLOCKING,1,
 834     [Define to 1 if you have no signal blocking at all (bummer).])
 835 fi
 836
 837 AC_MSG_RESULT($signals_style)
 838
 839 dnl Where is <signal.h> located?  Needed as input for signames.awk
 840 AC_CACHE_CHECK(where signal.h is located, nmh_cv_path_signal_h,
 841 [for SIGNAL_H in /usr/include/bsd/sys/signal.h  dnl Next
 842                  /usr/include/asm/signal.h      dnl Linux 1.3.0 and above
 843                  /usr/include/asm/signum.h      dnl some versions of Linux/Alpha
 844                  /usr/include/linux/signal.h    dnl Linux up to 1.2.11
 845                  /usr/include/sys/signal.h      dnl Almost everybody else
 846                  /dev/null;                     dnl Just in case we fall through
 847 do
 848   test -f $SIGNAL_H && \
 849   grep '#[      ]*define[       ][      ]*SIG[0-9A-Z]*[         ]*[0-9][0-9]*' $SIGNAL_H > /dev/null && \
 850   break
 851 done
 852 nmh_cv_path_signal_h=$SIGNAL_H
 853 ])
 854 SIGNAL_H=$nmh_cv_path_signal_h
 855 AC_SUBST(SIGNAL_H)dnl
 856
 857 dnl ----------------
 858 dnl OS SPECIFIC DEFINES
 859 dnl ----------------
 860 AH_TEMPLATE(SYS5, [Defined for Solaris 2.x, Irix, OSF/1, HP-UX, AIX, SCO5; only used in vmh.c which is not built.])
 861 AH_TEMPLATE(SVR4, [Defined for Solaris 2.x, Irix, OSF/1, HP-UX, AIX; only used in vmh.c which is not built.])
 862 AH_TEMPLATE(BSD44, [Defined for SunOS 4, FreeBSD, NetBSD, OpenBSD, BSD/OS, Mac OS X/Rhapsody; only used in vmh.c which is not built.])
 863 AH_TEMPLATE(BSD42, [Defined for SunOS 4, FreeBSD, NetBSD, OpenBSD, BSD/OS, Mac OS X/Rhapsody -- does PicoBSD have uname?])
 864 AH_TEMPLATE(SCO_5_STDIO, [Defined for SCO5.])
 865
 866 case "$target_os" in
 867
 868   solaris2*)
 869     AC_DEFINE(SYS5)
 870     AC_DEFINE(SVR4)
 871     ;;
 872   irix*)
 873     AC_DEFINE(SYS5)
 874     AC_DEFINE(SVR4)
 875     ;;
 876   osf*)
 877     AC_DEFINE(SYS5)
 878     AC_DEFINE(SVR4)
 879     ;;
 880   aix*)
 881     AC_DEFINE(SYS5)
 882     AC_DEFINE(SVR4)
 883     ;;
 884   sunos4*)
 885     AC_DEFINE(BSD42)
 886     ;;
 887   freebsd*)
 888     AC_DEFINE(BSD42)
 889     AC_DEFINE(BSD44)
 890     ;;
 891   netbsd*)
 892     AC_DEFINE(BSD42)
 893     AC_DEFINE(BSD44)
 894     ;;
 895   openbsd*)
 896     AC_DEFINE(BSD42)
 897     AC_DEFINE(BSD44)
 898     ;;
 899   bsd/os*)
 900     AC_DEFINE(BSD42)
 901     AC_DEFINE(BSD44)
 902     ;;
 903   sco5*)
 904     AC_DEFINE(SYS5)
 905     AC_DEFINE(SCO_5_STDIO)
 906     ;;
 907 esac
 908
 909
 910 dnl ----------------
 911 dnl OUTPUT MAKEFILES
 912 dnl ----------------
 913 AC_CONFIG_FILES(Makefile config/Makefile h/Makefile sbr/Makefile uip/Makefile \
 914                 mts/Makefile mts/smtp/Makefile \
 915                 etc/Makefile docs/Makefile man/Makefile)
 916 AC_CONFIG_COMMANDS([stamp],[test -z "$CONFIG_HEADERS" || echo > stamp-h])
 917 AC_OUTPUT
 918
 919 dnl These odd looking assignments are done to expand out unexpanded
 920 dnl variables in bindir et al (for instance mandir is '${datarootdir}/man',
 921 dnl but expanding that gives '${prefix}/share/man', so we need to expand
 922 dnl again to get the final answer.
 923 dnl We only use the expanded versions to print the install paths in
 924 dnl the final summary and should use them nowhere else (see the autoconf
 925 dnl docs for the rationale for bindir etc being unexpanded).
 926 eval "nmhbin=${bindir}";         eval "nmhbin=${nmhbin}"
 927 eval "nmhsysconf=${sysconfdir}"; eval "nmhsysconf=${nmhsysconf}"
 928 eval "nmhlib=${libdir}";         eval "nmhlib=${nmhlib}"
 929 eval "nmhman=${mandir}";         eval "nmhman=${nmhman}"
 930 eval "nmhrpm=${nmhrpm}";
 931
 932 pop_kinds=no
 933 if test x"$enable_pop" = x"yes"; then
 934   pop_kinds="yes ("
 935
 936   if test x"$enable_apop" = x"yes"; then
 937     pop_kinds="${pop_kinds}APOP "
 938   fi
 939
 940   pop_kinds="${pop_kinds}POP3)"
 941 fi
 942
 943 echo "
 944 nmh configuration
 945 -----------------
 946 nmh version                : AC_PACKAGE_VERSION
 947 target os                  : ${target}
 948 compiler                   : ${CC}
 949 compiler flags             : ${CFLAGS}
 950 linker flags               : ${LDFLAGS}
 951 definitions                : ${OURDEFS}
 952 source code location       : ${srcdir}
 953 binary install path        : ${nmhbin}
 954 library install path       : ${nmhlib}
 955 config files install path  : ${nmhsysconf}
 956 man page install path      : ${nmhman}
 957 RPM build root             : ${nmhrpm}
 958 backup prefix              : ${backup_prefix}
 959 transport system           : ${MTS}
 960 file locking type          : ${LOCKTYPE}
 961 default smtp servers       : ${smtpservers}
 962 default editor             : ${editorpath}
 963 default pager              : ${pagerpath}
 964 email address masquerading : ${masquerade}
 965 pop is enabled             : ${pop_kinds}
 966 SASL support               : ${sasl_support}
 967 TLS support                : ${tls_support}"
 968 echo ""