2 dnl configure.ac -- autoconf template for mmh
7 dnl (I was able to configure with autoconf-2.59 --meillo 2012-03-22)
9 AC_INIT(mmh, m4_normalize(m4_include([VERSION])))
10 AC_CONFIG_SRCDIR(h/nmh.h)
11 AC_CONFIG_HEADER(config.h)
15 dnl ---------------------
16 dnl define a macro or two
17 dnl ---------------------
19 AC_DEFUN(NMH_PROG_GNU_LIBTOOL, [
20 if test -n "$LIBTOOL" ; then
21 tmptest=`$LIBTOOL --version 2>&1 | grep GNU`
22 if test x"$tmptest" != x ; then
24 AC_SUBST(GNU_LIBTOOL)dnl
29 echo "configuring for AC_PACKAGE_NAME-AC_PACKAGE_VERSION"
30 AC_SUBST(VERSION,AC_PACKAGE_VERSION)dnl
32 dnl What date of mmh are we building?
33 DATE=`cat ${srcdir}/DATE`
34 echo "configuring for mmh dated $DATE"
37 dnl --------------------------
38 dnl CHECK COMMAND LINE OPTIONS
39 dnl --------------------------
41 dnl Do you want to debug mmh?
43 AS_HELP_STRING([--enable-debug],[enable nmh code debugging]))
44 dnl The old redundant --enable-nmh-debug is deprecated and undocumented.
45 if test x"$enable_nmh_debug" = x"yes"; then
49 dnl What method of locking to use?
51 AS_HELP_STRING([--with-locking=@<:@dot|fcntl|flock|lockf@:>@],
52 [specify the file locking method]))
54 if test x"$with_locking" = x"dot"; then
56 AC_DEFINE(DOT_LOCKING, 1, [Define to use dot based file locking.])dnl
57 elif test x"$with_locking" = x"flock"; then
59 AC_DEFINE(FLOCK_LOCKING, 1, [Define to use flock() based locking.])dnl
60 elif test x"$with_locking" = x"lockf"; then
62 AC_DEFINE(LOCKF_LOCKING, 1, [Define to use lockf() based locking.])dnl
63 elif test x"$with_locking" = x"fcntl"; then
65 AC_DEFINE(FCNTL_LOCKING, 1, [Define to use fnctl() based locking.])dnl
68 AC_DEFINE(DOT_LOCKING)dnl
72 dnl ----------------------------------------------------
73 dnl Default location is /usr/local/mmh/{bin,etc,lib,share/man}
74 dnl ----------------------------------------------------
75 AC_PREFIX_DEFAULT(/usr/local/mmh)
78 dnl ------------------
79 dnl CHECK THE COMPILER
80 dnl ------------------
81 dnl We want these before the checks,
82 dnl so the checks can modify their values.
83 test -z "$CFLAGS" && CFLAGS= auto_cflags=1
84 if test x"$enable_debug" = x"yes"; then
85 test -z "$LDFLAGS" && LDFLAGS=-g
90 AC_CACHE_CHECK(whether compiler supports -Wno-pointer-sign, nmh_cv_has_noptrsign,
91 [nmh_saved_cflags="$CFLAGS"
92 CFLAGS="$CFLAGS -Wno-pointer-sign"
93 AC_TRY_COMPILE([],[],nmh_cv_has_noptrsign=yes,nmh_cv_has_noptrsign=no)
94 CFLAGS="$nmh_saved_cflags"])
96 dnl if the user hasn't specified CFLAGS, then
97 dnl if compiler is gcc, then
98 dnl use -O2 and some warning flags
100 dnl We use -Wall; if the compiler supports it we also use -Wno-pointer-sign,
101 dnl because gcc 4 now produces a lot of new warnings which are probably mostly
102 dnl spurious and which in any case we don't want to deal with now.
103 if test "$nmh_cv_has_noptrsign" = "yes"; then
104 nmh_gcc_warnflags="-Wall -Wno-pointer-sign"
106 nmh_gcc_warnflags="-Wall"
109 if test -n "$auto_cflags"; then
110 if test x"$enable_debug" = x"yes"; then
111 if test -n "$GCC"; then
112 test -z "$CFLAGS" && CFLAGS="$nmh_gcc_warnflags -g" || CFLAGS="$CFLAGS $nmh_gcc_warnflags -g"
114 test -z "$CFLAGS" && CFLAGS=-g || CFLAGS="$CFLAGS -g"
117 if test -z "$LDFLAGS"; then
127 if test -n "$GCC"; then
128 test -z "$CFLAGS" && CFLAGS="$nmh_gcc_warnflags -O2" || CFLAGS="$CFLAGS $nmh_gcc_warnflags -O2"
130 test -z "$CFLAGS" && CFLAGS=-O || CFLAGS="$CFLAGS -O"
135 AC_C_CONST dnl Does compiler support `const'.
137 dnl ------------------
138 dnl CHECK FOR PROGRAMS
139 dnl ------------------
140 AC_PROG_MAKE_SET dnl Does make define $MAKE
141 AC_PROG_INSTALL dnl Check for BSD compatible `install'
142 AC_PROG_RANLIB dnl Check for `ranlib'
143 AC_PROG_AWK dnl Check for mawk,gawk,nawk, then awk
144 AC_PROG_LEX dnl Check for lex/flex
147 pathtmp=/usr/bin:/bin:/usr/local/bin:/usr/xpg4/bin:/usr/ucb
148 AC_PATH_PROG(cutpath, cut, no, [$pathtmp])
150 dnl ----------------------------------------------
151 dnl check for lclint, and lint if it doesn't exist
152 dnl ----------------------------------------------
153 AC_CHECK_PROG(linttmp1, lclint, lclint, no)dnl
154 if test x$ac_cv_prog_linttmp1 != xno ; then
155 LINT=$ac_cv_prog_linttmp1
156 LINTFLAGS="-weak +posixlib -macrovarprefixexclude"
158 AC_CHECK_PROG(linttmp2, lint, lint, no)dnl
159 if test x$ac_cv_prog_linttmp2 != xno ; then
160 LINT=$ac_cv_prog_linttmp2
163 LINT="echo 'No lint program found'"
168 AC_SUBST(LINTFLAGS)dnl
170 dnl try to figure out which one we've got
171 AC_CHECK_PROG(LIBTOOL, libtool, libtool, , [$pathtmp])
174 dnl Check for lorder and tsort commands
175 AC_CHECK_PROG(LORDER, lorder, lorder, no)dnl
176 AC_CHECK_PROG(TSORT, tsort, tsort, no)dnl
178 dnl If either doesn't exist, replace them with echo and cat
179 if test x$ac_cv_prog_LORDER != xlorder -o x$ac_cv_prog_TSORT != xtsort; then
184 dnl Mac OS X has lorder, but sh is too broken for it to work
185 dnl elif test -z "`lorder config/config.c 2>&1 | grep config/config.c`" ; then
188 dnl AC_SUBST(LORDER)dnl
189 dnl AC_SUBST(TSORT)dnl
192 dnl Check whether tsort can deal with loops
193 AC_CACHE_CHECK(whether tsort can deal with loops, nmh_cv_tsort_loop,
194 [if test -z "`echo a b b a | tsort 2>/dev/null | grep a`" ; then
197 nmh_cv_tsort_loop=yes
199 if test x$nmh_cv_tsort_loop = xno ; then
207 pathtmp=/usr/bin:/bin:/usr/local/bin:/usr/xpg4/bin:/usr/ucb
208 AC_PATH_PROG(lspath, ls, no, [$pathtmp])
210 dnl See how we get ls to display the owner and the group
211 if test "$lspath" != "no"; then
212 AC_CACHE_CHECK(how to get ls to show us the group ownership of a file,
214 [if test x"`$lspath -dl / | $AWK '{print $9}'`" = x"/"; then
215 dnl There were 9 parameters, so unless this is a really bizarre, nonstandard
216 dnl ls, it would seem -l gave us both the user and group. On this type of
217 dnl ls, -g makes _only_ the group be displayed (and not the user).
218 nmh_cv_ls_grpopt="-l"
220 dnl Looks like -l only gave us the user, so we need -g to get the group too.
221 nmh_cv_ls_grpopt="-lg"
225 dnl Look for `sendmail'
226 pathtmp=/usr/lib:/usr/sbin:/usr/etc:/usr/ucblib:/usr/bin:/bin
227 AC_PATH_PROG(sendmailpath, sendmail, /usr/sbin/sendmail, [$pathtmp])
230 pathtmp=/usr/bin:/bin:/usr/ucb:/usr/local/bin
231 AC_PATH_PROG(vipath, vi, /bin/vi, [$pathtmp])
233 dnl ----------------------------------------------------------
234 dnl FIND MAIL SPOOL AND SEE IF WE NEED TO MAKE inc SETGID MAIL
235 dnl ----------------------------------------------------------
236 AC_CACHE_CHECK(where mail spool is located, nmh_cv_mailspool,
237 [for mailspool in /var/mail dnl
240 /dev/null; dnl Just in case we fall through
242 test -d $mailspool && break
244 nmh_cv_mailspool=$mailspool
246 mailspool=$nmh_cv_mailspool
247 AC_SUBST(mailspool)dnl
249 dnl See whether the mail spool directory is world-writable.
250 if test "$lspath" != "no" -a "$cutpath" != "no"; then
251 AC_CACHE_CHECK(whether the mail spool is world-writable,
252 nmh_cv_mailspool_world_writable,
253 [if test "`$lspath -dlL $mailspool | $cutpath -c9`" = "-"; then
254 nmh_cv_mailspool_world_writable=no
256 nmh_cv_mailspool_world_writable=yes
260 dnl Also, check for liblockfile (as found on Debian systems)
261 AC_CHECK_HEADER(lockfile.h, AC_CHECK_LIB(lockfile, lockfile_create) )
263 dnl and whether its companion program dotlockfile is setgid
264 AC_PATH_PROG(dotlockfilepath, dotlockfile, no)
265 if test "$ac_cv_lib_lockfile_lockfile_create" != "no" ; then
266 if test "$ac_cv_path_dotlockfilepath" != "no" ; then
267 AC_CACHE_CHECK(whether dotlockfile is setgid, nmh_cv_dotlockfile_setgid,
268 [ if test -g "$ac_cv_path_dotlockfilepath" ; then
269 nmh_cv_dotlockfile_setgid=yes
271 nmh_cv_dotlockfile_setgid=no
276 dnl If mailspool is not world-writable and dotlockfile is not setgid,
277 dnl we need to #define MAILGROUP to 1 and make inc setgid.
278 if test x"$LOCKTYPE" = x"dot" -a x"$nmh_cv_mailspool_world_writable" = x"no" -a x"$nmh_cv_dotlockfile_setgid" != x"yes" ; then
279 dnl do we really need both of these?
280 AC_DEFINE(MAILGROUP,1,
281 [Define to 1 if you need to make `inc' set-group-id because your mail spool is not world writable. There are no guarantees as to the safety of doing this, but this #define will add some extra security checks.])dnl
284 AC_SUBST(SETGID_MAIL)dnl
286 dnl Use ls to see which group owns the mail spool directory.
287 AC_CACHE_CHECK(what group owns the mail spool, nmh_cv_ls_mail_grp,
288 [nmh_cv_ls_mail_grp=`$lspath -dL $nmh_cv_ls_grpopt $mailspool|$AWK '{print $4}'`
290 MAIL_SPOOL_GRP=$nmh_cv_ls_mail_grp
291 AC_SUBST(MAIL_SPOOL_GRP)dnl
293 dnl ------------------
294 dnl CHECK HEADER FILES
295 dnl ------------------
297 dnl On glibc we need to define at least the '_XOPEN_SOURCE' level of features,
298 dnl or wchar.h doesn't declare a prototype for wcwidth(). But if we only define
299 dnl that level then db.h won't compile. So we define _GNU_SOURCE which turns
300 dnl on everything. Perhaps other OSes need some feature switch set to get wcwidth()
301 dnl declared; if so they should have an entry added to this case statement.
302 dnl NB that we must define this on the compiler command line, not in config.h,
303 dnl because it must be set before any system header is included and there's no
304 dnl portable way to make sure that files generated by lex include config.h
305 dnl before system header files.
309 # Like DEFS, but doesn't get stomped on by configure when using config.h:
310 OURDEFS="$OURDEFS -D_GNU_SOURCE"
317 AC_CHECK_HEADERS(fcntl.h crypt.h termcap.h \
318 langinfo.h wchar.h wctype.h iconv.h \
319 sys/param.h sys/time.h sys/stream.h )
322 dnl Checks for _IO_write_ptr. A Linuxism used by nmh on linux. We
323 dnl really use a whole set of them, but this check should be
326 AC_CHECK_HEADER(libio.h, [
327 AC_EGREP_HEADER(_IO_write_ptr, libio.h, [
328 AC_DEFINE(LINUX_STDIO,1,[Use the Linux _IO_*_ptr defines from <libio.h>.]) ]) ])
330 AC_CHECK_HEADER([sys/ptem.h], AC_DEFINE(WINSIZE_IN_PTEM,1,
331 [Define to 1 if `struct winsize' requires <sys/ptem.h>.]),,
332 [[#if HAVE_SYS_STREAM_H
333 # include <sys/stream.h>
340 AC_CHECK_FUNCS(nl_langinfo mbtowc wcwidth)
342 dnl Look for the initgroups() declaration. On AIX 4.[13], Solaris 4.1.3, and
343 dnl ULTRIX 4.2A the function is defined in libc but there's no declaration in
344 dnl any system header.
346 dnl On Solaris 2.[456], the declaration is in <grp.h>. On HP-UX 9-11 and
347 dnl (reportedly) FreeBSD 3.[23], it's in <unistd.h>. Any other locations we
349 AH_TEMPLATE(INITGROUPS_HEADER, [Define to the header containing the declaration of `initgroups'.])
350 AC_EGREP_HEADER(initgroups, grp.h, AC_DEFINE(INITGROUPS_HEADER, <grp.h>),
351 AC_EGREP_HEADER(initgroups, unistd.h,
352 AC_DEFINE(INITGROUPS_HEADER, <unistd.h>)))
354 dnl Check for multibyte character set support
355 if test "x$ac_cv_header_wchar_h" = "xyes" -a "x$ac_cv_header_wctype_h" = "xyes" \
356 -a "x$ac_cv_func_wcwidth" = "xyes" -a "x$ac_cv_func_mbtowc" = "xyes"; then
357 AC_DEFINE(MULTIBYTE_SUPPORT, 1,
358 [Define to enable support for multibyte character sets.])
361 dnl -------------------
362 dnl CHECK FOR LIBRARIES
363 dnl -------------------
364 dnl Check location of modf
365 AC_CHECK_FUNC(modf, , AC_CHECK_LIB(m, modf))
367 dnl Checks for network libraries (nsl, socket)
370 termcap_curses_order="termcap curses ncurses"
371 for lib in $termcap_curses_order; do
372 AC_CHECK_LIB(${lib}, tgetent, [TERMLIB="-l$lib"; break])
375 if test "x$TERMLIB" = "x"; then
376 echo 'Could not find tgetent() in any library.'
377 echo 'Is there a ncurses-devel package that you can install?'
386 dnl Find iconv. It may be in libiconv and may be iconv() or libiconv()
387 if test "x$ac_cv_header_iconv_h" = "xyes"; then
388 AC_CHECK_FUNC(iconv, ac_found_iconv=yes, ac_found_iconv=no)
389 if test "x$ac_found_iconv" = "xno"; then
390 AC_CHECK_LIB(iconv, iconv, ac_found_iconv=yes)
391 if test "x$ac_found_iconv" = "xno"; then
392 AC_CHECK_LIB(iconv, libiconv, ac_found_iconv=yes)
394 if test "x$ac_found_iconv" != "xno"; then
398 dnl Handle case where there is a native iconv but iconv.h is from libiconv
399 AC_CHECK_DECL(_libiconv_version,
400 [ AC_CHECK_LIB(iconv, libiconv, LIBS="-liconv $LIBS") ],,
401 [ #include <iconv.h> ])
404 if test "x$ac_found_iconv" = xyes; then
405 AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
408 dnl Check if iconv uses const in prototype declaration
409 if test "x$ac_found_iconv" = "xyes"; then
410 AC_CACHE_CHECK(for iconv declaration, ac_cv_iconv_const,
411 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
412 #include <iconv.h>]],
416 #if defined(__STDC__) || defined(__cplusplus)
417 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
421 [ac_cv_iconv_const=],
422 [ac_cv_iconv_const=const])])
423 AC_DEFINE_UNQUOTED([ICONV_CONST], $ac_cv_iconv_const,
424 [Define as const if the declaration of iconv() needs const.])
428 dnl ---------------------
429 dnl CHECK TERMCAP LIBRARY
430 dnl ---------------------
432 dnl Add the termcap library, so that the following configure
433 dnl tests will find it when it tries to link test programs.
434 nmh_save_LIBS="$LIBS"
435 LIBS="$TERMLIB $LIBS"
437 dnl Check if tgetent accepts NULL (and will allocate its own termcap buffer)
438 dnl Some termcaps reportedly accept a zero buffer, but then dump core
440 dnl Under Cygwin test program crashes but exit code is still 0. So,
441 dnl we test for a file that porgram should create
442 AH_TEMPLATE([TGETENT_ACCEPTS_NULL],
443 [Define to 1 if tgetent() accepts NULL as a buffer.])
444 AC_CACHE_CHECK(if tgetent accepts NULL,
445 nmh_cv_func_tgetent_accepts_null,
450 int r1 = tgetent(buf, "vt100");
451 int r2 = tgetent(NULL,"vt100");
452 if (r1 >= 0 && r1 == r2) {
456 creat("conftest.tgetent", 0640);
458 exit((r1 != r2) || r2 == -1);
461 if test -f conftest.tgetent; then
462 nmh_cv_func_tgetent_accepts_null=yes
464 nmh_cv_func_tgetent_accepts_null=no
466 nmh_cv_func_tgetent_accepts_null=no,
467 nmh_cv_func_tgetent_accepts_null=no)])
468 if test x$nmh_cv_func_tgetent_accepts_null = xyes; then
469 AC_DEFINE(TGETENT_ACCEPTS_NULL)
471 AC_CACHE_CHECK(if tgetent returns 0 on success,
472 nmh_cv_func_tgetent_zero_success,
477 int r1 = tgetent(buf, "!@#$%^&*");
478 int r2 = tgetent(buf, "vt100");
479 if (r1 < 0 && r2 == 0) {
483 creat("conftest.tgetent0", 0640);
488 if test -f conftest.tgetent0; then
489 nmh_cv_func_tgetent_zero_success=yes
491 nmh_cv_func_tgetent_zero_success=no
493 nmh_cv_func_tgetent_zero_success=no,
494 nmh_cv_func_tgetent_zero_success=no)])
495 AH_TEMPLATE([TGETENT_SUCCESS],
496 [Define to what tgetent() returns on success (0 on HP-UX X/Open curses).])
497 if test x$nmh_cv_func_tgetent_zero_success = xyes; then
498 AC_DEFINE(TGETENT_SUCCESS, 0)
500 AC_DEFINE(TGETENT_SUCCESS, 1)
503 dnl Now put the libraries back to what it was before we
504 dnl starting checking the termcap library.
505 LIBS="$nmh_save_LIBS"
520 dnl For platforms such as FreeBSD that have tm_gmtoff in struct tm.
521 dnl (FreeBSD has a timezone() function but not a timezone global
522 dnl variable that is visible).
523 AC_CHECK_MEMBERS([struct tm.tm_gmtoff],,,[#include <time.h>])
525 AC_STRUCT_DIRENT_D_TYPE
527 dnl Where is <signal.h> located? Needed as input for signames.awk
528 AC_CACHE_CHECK(where signal.h is located, nmh_cv_path_signal_h,
529 [for SIGNAL_H in /usr/include/bsd/sys/signal.h dnl Next
530 /usr/include/asm/signal.h dnl Linux 1.3.0 and above
531 /usr/include/asm/signum.h dnl some versions of Linux/Alpha
532 /usr/include/linux/signal.h dnl Linux up to 1.2.11
533 /usr/include/sys/signal.h dnl Almost everybody else
534 /dev/null; dnl Just in case we fall through
536 test -f $SIGNAL_H && \
537 grep '#[ ]*define[ ][ ]*SIG[0-9A-Z]*[ ]*[0-9][0-9]*' $SIGNAL_H > /dev/null && \
540 nmh_cv_path_signal_h=$SIGNAL_H
542 SIGNAL_H=$nmh_cv_path_signal_h
543 AC_SUBST(SIGNAL_H)dnl
549 AC_CONFIG_FILES(Makefile config/Makefile h/Makefile sbr/Makefile uip/Makefile \
550 etc/Makefile docs/Makefile man/Makefile)
551 AC_CONFIG_COMMANDS([stamp],[test -z "$CONFIG_HEADERS" || echo > stamp-h])
554 dnl These odd looking assignments are done to expand out unexpanded
555 dnl variables in bindir et al (for instance mandir is '${datarootdir}/man',
556 dnl but expanding that gives '${prefix}/share/man', so we need to expand
557 dnl again to get the final answer.
558 dnl We only use the expanded versions to print the install paths in
559 dnl the final summary and should use them nowhere else (see the autoconf
560 dnl docs for the rationale for bindir etc being unexpanded).
561 eval "nmhbin=${bindir}"; eval "nmhbin=${nmhbin}"
562 eval "nmhsysconf=${sysconfdir}"; eval "nmhsysconf=${nmhsysconf}"
563 eval "nmhlib=${libdir}"; eval "nmhlib=${nmhlib}"
564 eval "nmhman=${mandir}"; eval "nmhman=${nmhman}"
569 mmh version : AC_PACKAGE_VERSION
570 target os : ${target}
572 compiler flags : ${CFLAGS}
573 linker flags : ${LDFLAGS}
574 definitions : ${OURDEFS}
575 source code location : ${srcdir}
577 binary install path : ${nmhbin}
578 library install path : ${nmhlib}
579 config install path : ${nmhsysconf}
580 man page install path : ${nmhman}
582 sendmail path : ${sendmailpath}
583 mail spool : ${mailspool}
585 file locking type : ${LOCKTYPE}