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

   1 dnl
   2 dnl configure.ac -- 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 client-side support for pop?
  60 AC_ARG_ENABLE(pop,
  61   AS_HELP_STRING([--enable-pop], [enable client-side support for plain POP3]))
  62 dnl The old redundant --enable-nmh-pop is deprecated and undocumented.
  63 if test x"$enable_nmh_pop" = x"yes"; then
  64   enable_pop=yes
  65 fi
  66
  67 dnl Do you want to disable use of locale functions
  68 AH_TEMPLATE([LOCALE],
  69 [Undefine if you don't want locale features.  By default this is defined.])
  70 AC_ARG_ENABLE([locale],
  71 AC_HELP_STRING([--disable-locale], [turn off locale features]),
  72 [if test x$enableval = xyes; then
  73   AC_DEFINE(LOCALE)
  74 fi],
  75 AC_DEFINE(LOCALE)
  76 )
  77
  78 dnl Do you want client-side support for using SASL for authentication?
  79 dnl Note that this code will be enabled for both POP and SMTP
  80 AC_ARG_WITH(cyrus-sasl, AS_HELP_STRING([--with-cyrus-sasl],
  81   [Enable SASL support via the Cyrus SASL library]))
  82 if test x"$with_cyrus_sasl" != x -a x"$with_cyrus_sasl" != x"no"; then
  83   AC_DEFINE(CYRUS_SASL, 1,
  84     [Define to use the Cyrus SASL library for authentication of POP and SMTP.])dnl
  85   if test x"$with_cyrus_sasl" != xyes; then
  86     AC_MSG_WARN([Arguments to --with-cyrus-sasl now ignored])
  87     AC_MSG_WARN([Please pass the appropriate arguments to CPPFLAGS/LDFLAGS])
  88   fi
  89   sasl_support=yes
  90 else
  91   sasl_support=no
  92 fi
  93
  94 dnl Do you want client-side support for encryption with TLS?
  95 AC_ARG_WITH(tls, AS_HELP_STRING([--with-tls], [Enable TLS support]))
  96 if test x"$with_tls" != x -a x"$with_tls" != x"no"; then
  97   AC_DEFINE(TLS_SUPPORT, 1, [Support TLS for session encryption.])dnl
  98   tls_support=yes
  99 else
 100   tls_support=no
 101 fi
 102
 103 dnl What should be the default editor?
 104 AC_ARG_WITH(editor,
 105   AS_HELP_STRING([--with-editor=EDITOR],[specify the default editor]))
 106
 107 if test -n "$with_editor"; then
 108   editorpath="$with_editor"
 109 fi
 110
 111 dnl Set the backup prefix
 112 AC_ARG_WITH([hash-backup],
 113   AS_HELP_STRING([--with-hash-backup],[use # as the backup prefix (default: ,)]))
 114 if test x"$with_hash_backup" != x -a x"$with_hash_backup" != x"no"; then
 115   backup_prefix="#"
 116 else
 117   backup_prefix=","
 118 fi
 119 AC_DEFINE_UNQUOTED(BACKUP_PREFIX, "$backup_prefix",
 120     [The prefix that is prepended to the name of message files when they are "removed" by rmm. This should typically be `,' or `#'.])dnl
 121
 122 dnl After we know if we're including apop and kpop support, do pop stuff
 123 if test x"$enable_pop" = x"yes"; then
 124   AC_DEFINE(POP, 1,
 125     [Define this to compile client-side support for pop into inc and msgchk.])dnl
 126   POPLIB=popsbr.o
 127   POPSED='/^%nmhbeginpop%/d;/^%nmhendpop%/d'
 128 else
 129   POPSED='/^%nmhbeginpop%/,/^%nmhendpop%/d'
 130 fi
 131 AC_SUBST(POPLIB)dnl
 132 AC_SUBST(POPSED)dnl
 133
 134 dnl What method of locking to use?
 135 AC_ARG_WITH(locking,
 136   AS_HELP_STRING([--with-locking=@<:@dot|fcntl|flock|lockf@:>@],
 137   [specify the file locking method]))
 138
 139 if test x"$with_locking" = x"dot"; then
 140   LOCKTYPE="dot"
 141   AC_DEFINE(DOT_LOCKING, 1, [Define to use dot based file locking.])dnl
 142 elif test x"$with_locking" = x"flock"; then
 143   LOCKTYPE="flock"
 144   AC_DEFINE(FLOCK_LOCKING, 1, [Define to use flock() based locking.])dnl
 145 elif test x"$with_locking" = x"lockf"; then
 146   LOCKTYPE="lockf"
 147   AC_DEFINE(LOCKF_LOCKING, 1, [Define to use lockf() based locking.])dnl
 148 elif test x"$with_locking" = x"fcntl"; then
 149   LOCKTYPE="fcntl"
 150   AC_DEFINE(FCNTL_LOCKING, 1, [Define to use fnctl() based locking.])dnl
 151 else
 152   LOCKTYPE="dot"
 153   AC_DEFINE(DOT_LOCKING)dnl
 154 fi
 155
 156 dnl Should we use a locking directory?
 157 AC_ARG_ENABLE([lockdir], [
 158   AS_HELP_STRING([--enable-lockdir=dir], [Store dot-lock files in "dir"])], [
 159   AS_IF([test "x$enableval" = xyes],[
 160     AC_MSG_ERROR([--enable-lockdir requires an argument])])
 161   AS_IF([test "x$LOCKTYPE" != xdot],[
 162     AC_MSG_ERROR([Can only use --enable-lockdir with dot locking])])
 163   AC_DEFINE_UNQUOTED([LOCKDIR], ["$enableval"],
 164                      [Directory to store dot-locking lock files])
 165 ])
 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 "$LDFLAGS" && LDFLAGS=-g
 217 fi
 218
 219 AC_PROG_CC
 220
 221 AC_CACHE_CHECK(whether preprocessor supports -Wunused-macros,
 222   nmh_cv_has_unusedmacros,
 223   [nmh_saved_cppflags="$CPPFLAGS"
 224    CPPFLAGS="$CPPFLAGS -Wunused-macros -Wno-unused-macros"
 225    AC_TRY_COMPILE([],[],nmh_cv_has_unusedmacros=yes,nmh_cv_has_unusedmacros=no)
 226    CPPFLAGS="$nmh_saved_cppflags"])
 227
 228 if test "$nmh_cv_has_unusedmacros" = 'yes'; then
 229   test -z "$CPPLAGS"  &&  CPPFLAGS=-Wunused-macros \
 230                       ||  CPPFLAGS="$CPPFLAGS -Wunused-macros"
 231   DISABLE_UNUSED_MACROS_WARNING=-Wno-unused-macros
 232 fi
 233 AC_SUBST(DISABLE_UNUSED_MACROS_WARNING)dnl
 234
 235 AC_CACHE_CHECK(whether compiler supports -Wextra, nmh_cv_wextra,
 236 [nmh_saved_cflags="$CFLAGS"
 237  CFLAGS="$CFLAGS -Wextra"
 238  AC_TRY_COMPILE([],[],nmh_cv_wextra=' -Wextra',echo -n no)
 239  CFLAGS="$nmh_saved_cflags"])
 240
 241 AC_CACHE_CHECK(whether compiler supports -Wno-pointer-sign, nmh_cv_has_noptrsign,
 242 [nmh_saved_cflags="$CFLAGS"
 243  CFLAGS="$CFLAGS -Wno-pointer-sign"
 244  AC_TRY_COMPILE([],[],nmh_cv_has_noptrsign=yes,nmh_cv_has_noptrsign=no)
 245  CFLAGS="$nmh_saved_cflags"])
 246
 247 dnl if the user hasn't specified CFLAGS, then
 248 dnl   if compiler is gcc, then
 249 dnl     use -O2 and some warning flags
 250 dnl   else use -O
 251 dnl We use -Wall and -Wextra if supported.  If the compiler supports it we
 252 dnl also use -Wno-pointer-sign, because gcc 4 now produces a lot of new
 253 dnl warnings which are probably mostly spurious and which in any case we
 254 dnl don't want to deal with now.
 255 if test "$nmh_cv_has_noptrsign" = "yes"; then
 256         nmh_gcc_warnflags="-Wall$nmh_cv_wextra -Wno-pointer-sign"
 257 else
 258         nmh_gcc_warnflags="-Wall$nmh_cv_wextra"
 259 fi
 260
 261 if test -n "$auto_cflags"; then
 262   if test x"$enable_debug" = x"yes"; then
 263     if test -n "$GCC"; then
 264       test -z "$CFLAGS" && CFLAGS="$nmh_gcc_warnflags -g" || CFLAGS="$CFLAGS $nmh_gcc_warnflags -g"
 265     else
 266       test -z "$CFLAGS" && CFLAGS=-g || CFLAGS="$CFLAGS -g"
 267     fi
 268   else
 269     if test -z "$LDFLAGS"; then
 270       case "$build_os" in
 271         darwin*)
 272           LDFLAGS=
 273           ;;
 274         *)
 275           LDFLAGS=-s
 276           ;;
 277       esac
 278     fi
 279     if test -n "$GCC"; then
 280       test -z "$CFLAGS" && CFLAGS="$nmh_gcc_warnflags -O2" || CFLAGS="$CFLAGS $nmh_gcc_warnflags -O2"
 281     else
 282       test -z "$CFLAGS" && CFLAGS=-O  || CFLAGS="$CFLAGS -O"
 283     fi
 284   fi
 285 fi
 286
 287 AC_C_CONST              dnl Does compiler support `const'.
 288
 289 dnl ------------------
 290 dnl CHECK FOR PROGRAMS
 291 dnl ------------------
 292 AC_PROG_MAKE_SET        dnl Does make define $MAKE
 293 AC_PROG_INSTALL         dnl Check for BSD compatible `install'
 294 AC_PROG_RANLIB          dnl Check for `ranlib'
 295 AC_PROG_AWK             dnl Check for mawk,gawk,nawk, then awk
 296 AC_PROG_LEX             dnl Check for lex/flex
 297
 298 dnl Look for `cut'
 299 pathtmp=/usr/bin:/bin:/usr/local/bin:/usr/xpg4/bin:/usr/ucb
 300 AC_PATH_PROG(cutpath, cut, no, [$pathtmp])
 301
 302 dnl ----------------------------------------------
 303 dnl check for lclint, and lint if it doesn't exist
 304 dnl ----------------------------------------------
 305 AC_CHECK_PROG(linttmp1, lclint, lclint, no)dnl
 306 if test x$ac_cv_prog_linttmp1 != xno ; then
 307   LINT=$ac_cv_prog_linttmp1
 308   LINTFLAGS="-weak +posixlib -macrovarprefixexclude"
 309 else
 310   AC_CHECK_PROG(linttmp2, lint, lint, no)dnl
 311   if test x$ac_cv_prog_linttmp2 != xno ; then
 312     LINT=$ac_cv_prog_linttmp2
 313     LINTFLAGS=""
 314   else
 315     LINT="echo 'No lint program found'"
 316     LINTFLAGS=""
 317   fi
 318 fi
 319 AC_SUBST(LINT)dnl
 320 AC_SUBST(LINTFLAGS)dnl
 321
 322 dnl try to figure out which one we've got
 323 AC_CHECK_PROG(LIBTOOL, libtool, libtool, , [$pathtmp])
 324 NMH_PROG_GNU_LIBTOOL
 325
 326 dnl Check for lorder and tsort commands
 327 AC_CHECK_PROG(LORDER, lorder, lorder, no)dnl
 328 AC_CHECK_PROG(TSORT, tsort, tsort, no)dnl
 329
 330 dnl If either doesn't exist, replace them with echo and cat
 331 if test x$ac_cv_prog_LORDER != xlorder -o x$ac_cv_prog_TSORT != xtsort; then
 332   LORDER=echo
 333   TSORT=cat
 334   AC_SUBST(LORDER)dnl
 335   AC_SUBST(TSORT)dnl
 336 dnl Mac OS X has lorder, but sh is too broken for it to work
 337 dnl elif test -z "`lorder config/config.c 2>&1 | grep config/config.c`" ; then
 338 dnl   LORDER=echo
 339 dnl   TSORT=cat
 340 dnl   AC_SUBST(LORDER)dnl
 341 dnl   AC_SUBST(TSORT)dnl
 342 fi
 343
 344 dnl Check whether tsort can deal with loops
 345 AC_CACHE_CHECK(whether tsort can deal with loops, nmh_cv_tsort_loop,
 346   [if test -z "`echo a b b a | tsort 2>/dev/null | grep a`" ; then
 347     nmh_cv_tsort_loop=no
 348   else
 349     nmh_cv_tsort_loop=yes
 350   fi])
 351 if test x$nmh_cv_tsort_loop = xno ; then
 352   LORDER=echo
 353   TSORT=cat
 354   AC_SUBST(LORDER)dnl
 355   AC_SUBST(TSORT)dnl
 356 fi
 357
 358 dnl Look for `ls'
 359 pathtmp=/usr/bin:/bin:/usr/local/bin:/usr/xpg4/bin:/usr/ucb
 360 AC_PATH_PROG(lspath, ls, no, [$pathtmp])
 361
 362 dnl See how we get ls to display the owner and the group
 363 if test "$lspath" != "no"; then
 364   AC_CACHE_CHECK(how to get ls to show us the group ownership of a file,
 365                  nmh_cv_ls_grpopt,
 366   [if test x"`$lspath -dl / | $AWK '{print $9}'`" = x"/"; then
 367     dnl There were 9 parameters, so unless this is a really bizarre, nonstandard
 368     dnl ls, it would seem -l gave us both the user and group.  On this type of
 369     dnl ls, -g makes _only_ the group be displayed (and not the user).
 370     nmh_cv_ls_grpopt="-l"
 371   else
 372     dnl Looks like -l only gave us the user, so we need -g to get the group too.
 373     nmh_cv_ls_grpopt="-lg"
 374   fi])
 375 fi
 376
 377 dnl Look for `more'
 378 pathtmp=/usr/bin:/bin:/usr/ucb:/usr/local/bin
 379 AC_PATH_PROG(morepath, more, no, [$pathtmp])
 380
 381 dnl If pager is not specified yet,
 382 dnl then use `more' as the default.
 383 if test -z "$pagerpath"; then
 384   pagerpath="$morepath"
 385 fi
 386 AC_SUBST(pagerpath)dnl
 387
 388 dnl Look for `sendmail'
 389 pathtmp=/usr/lib:/usr/sbin:/usr/etc:/usr/ucblib:/usr/bin:/bin
 390 AC_PATH_PROG(sendmailpath, sendmail, /usr/sbin/sendmail, [$pathtmp])
 391
 392 dnl Look for `vi'
 393 pathtmp=/usr/bin:/bin:/usr/ucb:/usr/local/bin
 394 AC_PATH_PROG(vipath, vi, /bin/vi, [$pathtmp])
 395
 396 dnl If editor is not specified yet,
 397 dnl then use `vi' as the default.
 398 if test -z "$editorpath"; then
 399   editorpath="$vipath"
 400 fi
 401 AC_SUBST(editorpath)dnl
 402
 403 dnl ----------------------------------------------------------
 404 dnl FIND MAIL SPOOL AND SEE IF WE NEED TO MAKE inc SETGID MAIL
 405 dnl ----------------------------------------------------------
 406 AC_CACHE_CHECK(where mail spool is located, nmh_cv_mailspool,
 407 [for mailspool in /var/mail        dnl
 408                   /var/spool/mail  dnl
 409                   /usr/spool/mail  dnl
 410                   /dev/null;       dnl Just in case we fall through
 411 do
 412   test -d $mailspool && break
 413 done
 414 nmh_cv_mailspool=$mailspool
 415 ])
 416 mailspool=$nmh_cv_mailspool
 417 AC_SUBST(mailspool)dnl
 418
 419 dnl See whether the mail spool directory is world-writable.
 420 if test "$lspath" != "no" -a "$cutpath" != "no"; then
 421   AC_CACHE_CHECK(whether the mail spool is world-writable,
 422                  nmh_cv_mailspool_world_writable,
 423   [if test "`$lspath -dlL $mailspool | $cutpath -c9`" = "-"; then
 424     nmh_cv_mailspool_world_writable=no
 425   else
 426     nmh_cv_mailspool_world_writable=yes
 427   fi])
 428 fi
 429
 430 dnl Also, check for liblockfile (as found on Debian systems)
 431 AC_CHECK_HEADER(lockfile.h, AC_CHECK_LIB(lockfile, lockfile_create) )
 432
 433 dnl and whether its companion program dotlockfile is setgid
 434 AC_PATH_PROG(dotlockfilepath, dotlockfile, no)
 435 if test "$ac_cv_lib_lockfile_lockfile_create" != "no" ; then
 436   if test "$ac_cv_path_dotlockfilepath" != "no" ; then
 437     AC_CACHE_CHECK(whether dotlockfile is setgid, nmh_cv_dotlockfile_setgid,
 438     [ if test -g "$ac_cv_path_dotlockfilepath" ; then
 439         nmh_cv_dotlockfile_setgid=yes
 440       else
 441         nmh_cv_dotlockfile_setgid=no
 442       fi])
 443   fi
 444 fi
 445
 446 dnl If mailspool is not world-writable and dotlockfile is not setgid,
 447 dnl we need to #define MAILGROUP to 1 and make inc setgid.
 448 if test x"$LOCKTYPE" = x"dot" -a x"$nmh_cv_mailspool_world_writable" = x"no" -a x"$nmh_cv_dotlockfile_setgid" != x"yes" ; then
 449   dnl do we really need both of these?
 450   AC_DEFINE(MAILGROUP,1,
 451     [Define to 1 if you need to make `inc' set-group-id because your mail spool is not world writable. There are no guarantees as to the safety of doing this, but this #define will add some extra security checks.])dnl
 452   SETGID_MAIL=1
 453 fi
 454 AC_SUBST(SETGID_MAIL)dnl
 455
 456 dnl Use ls to see which group owns the mail spool directory.
 457 AC_CACHE_CHECK(what group owns the mail spool, nmh_cv_ls_mail_grp,
 458 [nmh_cv_ls_mail_grp=`$lspath -dL $nmh_cv_ls_grpopt $mailspool|$AWK '{print $4}'`
 459 ])
 460 MAIL_SPOOL_GRP=$nmh_cv_ls_mail_grp
 461 AC_SUBST(MAIL_SPOOL_GRP)dnl
 462
 463 dnl ------------------
 464 dnl CHECK HEADER FILES
 465 dnl ------------------
 466
 467 dnl On glibc we need to define at least the '_XOPEN_SOURCE' level of features,
 468 dnl or wchar.h doesn't declare a prototype for wcwidth(). But if we only define
 469 dnl that level then db.h won't compile. So we define _GNU_SOURCE which turns
 470 dnl on everything. Perhaps other OSes need some feature switch set to get wcwidth()
 471 dnl declared; if so they should have an entry added to this case statement.
 472 dnl NB that we must define this on the compiler command line, not in config.h,
 473 dnl because it must be set before any system header is included and there's no
 474 dnl portable way to make sure that files generated by lex include config.h
 475 dnl before system header files.
 476
 477 case "$target_os" in
 478   linux*)
 479     # Like DEFS, but doesn't get stomped on by configure when using config.h:
 480     test -z "$OURDEFS"  &&  OURDEFS="-D_GNU_SOURCE"  \
 481                         ||  OURDEFS="$OURDEFS -D_GNU_SOURCE"
 482     ;;
 483 esac
 484 AC_SUBST(OURDEFS)
 485
 486 AC_HEADER_STDC
 487 AC_HEADER_TIOCGWINSZ
 488 AC_CHECK_HEADERS(errno.h fcntl.h crypt.h termcap.h \
 489                  langinfo.h wchar.h wctype.h iconv.h netdb.h \
 490                  sys/param.h sys/time.h sys/stream.h)
 491
 492 dnl
 493 dnl Checks for _IO_write_ptr. A Linuxism used by nmh on linux. We
 494 dnl really use a whole set of them, but this check should be
 495 dnl sufficient.
 496 dnl
 497 AC_CHECK_HEADER(libio.h, [
 498   AC_EGREP_HEADER(_IO_write_ptr, libio.h, [
 499     AC_DEFINE(LINUX_STDIO,1,[Use the Linux _IO_*_ptr defines from <libio.h>.]) ]) ])
 500
 501 AC_CHECK_HEADER([sys/ptem.h], AC_DEFINE(WINSIZE_IN_PTEM,1,
 502   [Define to 1 if `struct winsize' requires <sys/ptem.h>.]),,
 503 [[#if HAVE_SYS_STREAM_H
 504 #  include <sys/stream.h>
 505 #endif
 506 ]])
 507
 508 dnl ---------------
 509 dnl CHECK FUNCTIONS
 510 dnl ---------------
 511 AC_CHECK_FUNCS(writev lstat getutent nl_langinfo)
 512
 513 dnl Check for multibyte character set support
 514 if test "x$ac_cv_header_wchar_h" = "xyes" -a "x$ac_cv_header_wctype_h" = "xyes" \
 515     -a "x$ac_cv_func_wcwidth" = "xyes" -a "x$ac_cv_func_mbtowc" = "xyes"; then
 516   AC_DEFINE(MULTIBYTE_SUPPORT, 1,
 517     [Define to enable support for multibyte character sets.])
 518 fi
 519
 520 dnl -------------------
 521 dnl CHECK FOR LIBRARIES
 522 dnl -------------------
 523 dnl Check location of modf
 524 AC_CHECK_FUNC(modf, , AC_CHECK_LIB(m, modf))
 525
 526 dnl Checks for network libraries (nsl, socket)
 527 AC_CHECK_NETLIBS
 528
 529 termcap_curses_order="termcap curses ncurses"
 530 for lib in $termcap_curses_order; do
 531   AC_CHECK_LIB(${lib}, tgetent, [TERMLIB="-l$lib"; break])
 532 done
 533 AC_SUBST(TERMLIB)dnl
 534
 535 dnl ---------------
 536 dnl CHECK FOR ICONV
 537 dnl ---------------
 538
 539 dnl Find iconv. It may be in libiconv and may be iconv() or libiconv()
 540 if test "x$ac_cv_header_iconv_h" = "xyes"; then
 541   AC_CHECK_FUNC(iconv, ac_found_iconv=yes, ac_found_iconv=no)
 542   if test "x$ac_found_iconv" = "xno"; then
 543     AC_CHECK_LIB(iconv, iconv, ac_found_iconv=yes)
 544     if test "x$ac_found_iconv" = "xno"; then
 545       AC_CHECK_LIB(iconv, libiconv, ac_found_iconv=yes)
 546     fi
 547     if test "x$ac_found_iconv" != "xno"; then
 548       LIBS="-liconv $LIBS"
 549     fi
 550   else
 551     dnl Handle case where there is a native iconv but iconv.h is from libiconv
 552     AC_CHECK_DECL(_libiconv_version,
 553       [ AC_CHECK_LIB(iconv, libiconv, LIBS="-liconv $LIBS") ],,
 554       [ #include <iconv.h> ])
 555   fi
 556 fi
 557 if test "x$ac_found_iconv" = xyes; then
 558   AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
 559 fi
 560
 561 dnl Check if iconv uses const in prototype declaration
 562 if test "x$ac_found_iconv" = "xyes"; then
 563   AC_CACHE_CHECK(for iconv declaration, ac_cv_iconv_const,
 564     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
 565         #include <iconv.h>]],
 566         [[#ifdef __cplusplus
 567           "C"
 568           #endif
 569           #if defined(__STDC__) || defined(__cplusplus)
 570           size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
 571           #else
 572           size_t iconv();
 573           #endif]])],
 574       [ac_cv_iconv_const=],
 575       [ac_cv_iconv_const=const])])
 576   AC_DEFINE_UNQUOTED([ICONV_CONST], $ac_cv_iconv_const,
 577     [Define as const if the declaration of iconv() needs const.])
 578 fi
 579
 580 dnl --------------
 581 dnl CHECK FOR NDBM
 582 dnl --------------
 583
 584 AC_ARG_WITH([ndbm],AS_HELP_STRING([--with-ndbm=ARG],[use -lARG to link with ndbm]),
 585             [nmh_ndbm=$withval],[nmh_ndbm=autodetect])
 586 AC_ARG_WITH([ndbmheader],AS_HELP_STRING([--with-ndbmheader=ARG],[#include <ARG> to use ndbm]),
 587             [nmh_ndbmheader=$withval],[nmh_ndbmheader=autodetect])
 588
 589 if test "$nmh_ndbm" = "autodetect"; then
 590   if test "$nmh_ndbmheader" != "autodetect"; then
 591     AC_MSG_ERROR([must specify both --with-ndbm and --with-ndbmheader or neither])
 592   else
 593
 594     dnl There are at least four implementations of ndbm, and
 595     dnl several of those can be in different places at the whim
 596     dnl of the system integrator. A good summary of this mess
 597     dnl can be found at http://www.unixpapa.com/incnote/dbm.html
 598
 599     dnl Classic ndbm with no library required (eg NetBSD): try this
 600     dnl first so we don't accidentally link in a pointless but harmless
 601     dnl library in one of the later ndbm.h+libfoo tests:
 602     NMH_CHECK_NDBM(ndbm.h,,,
 603     dnl Berkeley DBv2 emulating ndbm: header in db.h:
 604       NMH_CHECK_NDBM(db.h,db,,
 605     dnl Berkeley DBv1 emulating ndbm:
 606         NMH_CHECK_NDBM(ndbm.h,db,,
 607           NMH_CHECK_NDBM(ndbm.h,db1,,
 608     dnl Classic ndbm:
 609             NMH_CHECK_NDBM(ndbm.h,ndbm,,
 610     dnl glibc2.1 systems put db1 in a subdir:
 611               NMH_CHECK_NDBM(db1/ndbm.h,db1,,
 612     dnl GNU gdbm emulating ndbm, with header possibly in gdbm/
 613     dnl and possibly needing gbdm_compat library:
 614                 NMH_CHECK_NDBM(gdbm/ndbm.h,gdbm,,
 615                   NMH_CHECK_NDBM(gdbm/ndbm.h,gdbm_compat -lgdbm,,
 616                     NMH_CHECK_NDBM(ndbm.h,gdbm,,
 617                       NMH_CHECK_NDBM(ndbm.h,gdbm_compat -lgdbm))))))))))
 618
 619   fi
 620 else
 621   dnl We don't really need to check that the user-specified values work,
 622   dnl but it is a convenience to the user to bomb out early rather than
 623   dnl after configure and half the compile process.
 624   NMH_CHECK_NDBM([$nmh_ndbmheader],[$nmh_ndbm])
 625 fi
 626
 627 if test "$nmh_ndbm_found" = "no"; then
 628   AC_MSG_ERROR([could not find a working ndbm library/header combination])
 629 else
 630   dnl Now export the lib/header to our makefile/config.h:
 631   if test x"$nmh_ndbmheader" != x; then
 632     AC_DEFINE_UNQUOTED(NDBM_HEADER, <$nmh_ndbmheader>,
 633       [Define to the header containing the ndbm API prototypes.])
 634   fi
 635   if test x"$nmh_ndbm" != x; then
 636     NDBM_LIBS="-l$nmh_ndbm"
 637   else
 638     NDBM_LIBS=
 639   fi
 640   AC_SUBST(NDBM_LIBS)
 641 fi
 642
 643 dnl ------------------
 644 dnl Set RPM build root
 645 dnl ------------------
 646 dnl nmhrpm is used in the final summary, see below.  The default value is
 647 dnl reported there as ./RPM, consistent with the reporting of the default
 648 dnl source code location as ., but its absolute path is used in the Makefile.
 649 AC_ARG_WITH(rpmdir,
 650   AS_HELP_STRING([--with-rpmdir=RPMDIR], [RPM build directory @<:@RPM@:>@]))
 651   AS_IF([test x"$with_rpmdir" = x], [rpmdir='$(abs_srcdir)/RPM'; nmhrpm=./RPM],
 652           [rpmdir="$with_rpmdir"; eval "nmhrpm=${rpmdir}"])
 653 AC_SUBST(rpmdir)
 654
 655
 656 dnl --------------------
 657 dnl CHECK FOR CYRUS-SASL
 658 dnl --------------------
 659
 660 AS_IF([test x"$sasl_support" = x"yes"],[
 661   AC_CHECK_HEADER([sasl/sasl.h], , [AC_MSG_ERROR([sasl.h not found])])
 662   AC_CHECK_LIB([sasl2], [sasl_client_new], ,
 663     [AC_MSG_ERROR([Cyrus SASL library not found])])])
 664
 665 dnl -----------------
 666 dnl CHECK FOR OPENSSL
 667 dnl -----------------
 668
 669 AS_IF([test x"$tls_support" = x"yes"],[
 670   AC_CHECK_HEADER([openssl/ssl.h], , [AC_MSG_ERROR([openssl/ssl.h not found])])
 671   AC_CHECK_LIB([crypto], [BIO_write], ,
 672     [AC_MSG_ERROR([OpenSSL crypto library not found])])
 673   AC_CHECK_LIB([ssl], [SSL_library_init], ,
 674     [AC_MSG_ERROR([OpenSSL library not found])])])
 675
 676 dnl ---------------------
 677 dnl CHECK TERMCAP LIBRARY
 678 dnl ---------------------
 679
 680 dnl Add the termcap library, so that the following configure
 681 dnl tests will find it when it tries to link test programs.
 682 nmh_save_LIBS="$LIBS"
 683 LIBS="$TERMLIB $LIBS"
 684
 685 dnl Check if tgetent accepts NULL (and will allocate its own termcap buffer)
 686 dnl Some termcaps reportedly accept a zero buffer, but then dump core
 687 dnl in tgetstr().
 688 dnl Under Cygwin test program crashes but exit code is still 0. So,
 689 dnl we test for a file that porgram should create
 690 AH_TEMPLATE([TGETENT_ACCEPTS_NULL],
 691 [Define to 1 if tgetent() accepts NULL as a buffer.])
 692 AC_CACHE_CHECK(if tgetent accepts NULL,
 693 nmh_cv_func_tgetent_accepts_null,
 694 [AC_TRY_RUN([
 695 main()
 696 {
 697     char buf[4096];
 698     int r1 = tgetent(buf, "vt100");
 699     int r2 = tgetent((char*)0,"vt100");
 700     if (r1 >= 0 && r1 == r2) {
 701         char tbuf[1024], *u;
 702         u = tbuf;
 703         tgetstr("cl", &u);
 704         creat("conftest.tgetent", 0640);
 705     }
 706     exit((r1 != r2) || r2 == -1);
 707 }
 708 ],
 709   if test -f conftest.tgetent; then
 710     nmh_cv_func_tgetent_accepts_null=yes
 711   else
 712     nmh_cv_func_tgetent_accepts_null=no
 713   fi,
 714   nmh_cv_func_tgetent_accepts_null=no,
 715   nmh_cv_func_tgetent_accepts_null=no)])
 716 if test x$nmh_cv_func_tgetent_accepts_null = xyes; then
 717   AC_DEFINE(TGETENT_ACCEPTS_NULL)
 718 fi
 719 AC_CACHE_CHECK(if tgetent returns 0 on success,
 720 nmh_cv_func_tgetent_zero_success,
 721 [AC_TRY_RUN([
 722 main()
 723 {
 724     char buf[4096];
 725     int r1 = tgetent(buf, "!@#$%^&*");
 726     int r2 = tgetent(buf, "vt100");
 727     if (r1 < 0 && r2 == 0) {
 728         char tbuf[1024], *u;
 729         u = tbuf;
 730         tgetstr("cl", &u);
 731         creat("conftest.tgetent0", 0640);
 732     }
 733     exit(r1 == r2);
 734 }
 735 ],
 736   if test -f conftest.tgetent0; then
 737     nmh_cv_func_tgetent_zero_success=yes
 738   else
 739     nmh_cv_func_tgetent_zero_success=no
 740   fi,
 741   nmh_cv_func_tgetent_zero_success=no,
 742   nmh_cv_func_tgetent_zero_success=no)])
 743 AH_TEMPLATE([TGETENT_SUCCESS],
 744 [Define to what tgetent() returns on success (0 on HP-UX X/Open curses).])
 745 if test x$nmh_cv_func_tgetent_zero_success = xyes; then
 746   AC_DEFINE(TGETENT_SUCCESS, 0)
 747 else
 748   AC_DEFINE(TGETENT_SUCCESS, 1)
 749 fi
 750
 751 dnl Now put the libraries back to what it was before we
 752 dnl starting checking the termcap library.
 753 LIBS="$nmh_save_LIBS"
 754
 755 dnl --------------
 756 dnl CHECK TYPEDEFS
 757 dnl --------------
 758 AC_TYPE_PID_T
 759 AC_TYPE_OFF_T
 760 AC_TYPE_UID_T
 761 AC_TYPE_MODE_T
 762 AC_TYPE_SIZE_T
 763
 764 dnl ----------------
 765 dnl CHECK STRUCTURES
 766 dnl ----------------
 767
 768 AC_CHECK_MEMBERS([struct tm.tm_gmtoff],,,[#include <time.h>])
 769 AC_CHECK_MEMBERS(struct utmp.ut_type,,,[#include <utmp.h>])
 770
 771 AC_STRUCT_DIRENT_D_TYPE
 772
 773 dnl Where is <signal.h> located?  Needed as input for signames.awk
 774 AC_CACHE_CHECK(where signal.h is located, nmh_cv_path_signal_h,
 775 [for SIGNAL_H in /usr/include/bsd/sys/signal.h  dnl Next
 776                  /usr/include/asm/signal.h      dnl Linux 1.3.0 and above
 777                  /usr/include/asm/signum.h      dnl some versions of Linux/Alpha
 778                  /usr/include/linux/signal.h    dnl Linux up to 1.2.11
 779                  /usr/include/sys/signal.h      dnl Almost everybody else
 780                  /dev/null;                     dnl Just in case we fall through
 781 do
 782   test -f $SIGNAL_H && \
 783   grep '#[      ]*define[       ][      ]*SIG[0-9A-Z]*[         ]*[0-9][0-9]*' $SIGNAL_H > /dev/null && \
 784   break
 785 done
 786 nmh_cv_path_signal_h=$SIGNAL_H
 787 ])
 788 SIGNAL_H=$nmh_cv_path_signal_h
 789 AC_SUBST(SIGNAL_H)dnl
 790
 791 dnl ----------------
 792 dnl OUTPUT MAKEFILES
 793 dnl ----------------
 794 AC_CONFIG_FILES(Makefile config/Makefile h/Makefile sbr/Makefile uip/Makefile \
 795                 mts/Makefile mts/smtp/Makefile \
 796                 etc/Makefile docs/Makefile man/Makefile)
 797 AC_CONFIG_COMMANDS([stamp],[test -z "$CONFIG_HEADERS" || echo > stamp-h])
 798 AC_OUTPUT
 799
 800 dnl These odd looking assignments are done to expand out unexpanded
 801 dnl variables in bindir et al (for instance mandir is '${datarootdir}/man',
 802 dnl but expanding that gives '${prefix}/share/man', so we need to expand
 803 dnl again to get the final answer.
 804 dnl We only use the expanded versions to print the install paths in
 805 dnl the final summary and should use them nowhere else (see the autoconf
 806 dnl docs for the rationale for bindir etc being unexpanded).
 807 eval "nmhbin=${bindir}";         eval "nmhbin=${nmhbin}"
 808 eval "nmhsysconf=${sysconfdir}"; eval "nmhsysconf=${nmhsysconf}"
 809 eval "nmhlib=${libdir}";         eval "nmhlib=${nmhlib}"
 810 eval "nmhman=${mandir}";         eval "nmhman=${nmhman}"
 811 eval "nmhrpm=${nmhrpm}";
 812
 813 pop_kinds=no
 814 if test x"$enable_pop" = x"yes"; then
 815   pop_kinds="yes ("
 816
 817   if test x"$enable_apop" = x"yes"; then
 818     pop_kinds="${pop_kinds}APOP "
 819   fi
 820
 821   pop_kinds="${pop_kinds}POP3)"
 822 fi
 823
 824 echo "
 825 nmh configuration
 826 -----------------
 827 nmh version                : AC_PACKAGE_VERSION
 828 target os                  : ${target}
 829 compiler                   : ${CC}
 830 compiler flags             : ${CFLAGS}
 831 linker flags               : ${LDFLAGS}
 832 definitions                : ${OURDEFS}
 833 source code location       : ${srcdir}
 834 binary install path        : ${nmhbin}
 835 library install path       : ${nmhlib}
 836 config files install path  : ${nmhsysconf}
 837 man page install path      : ${nmhman}
 838 RPM build root             : ${nmhrpm}
 839 backup prefix              : ${backup_prefix}
 840 transport system           : ${MTS}
 841 file locking type          : ${LOCKTYPE}
 842 default smtp servers       : ${smtpservers}
 843 default editor             : ${editorpath}
 844 default pager              : ${pagerpath}
 845 email address masquerading : ${masquerade}
 846 pop is enabled             : ${pop_kinds}
 847 SASL support               : ${sasl_support}
 848 TLS support                : ${tls_support}"
 849 echo ""