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 Do you want mhe support?
51 AS_HELP_STRING([--disable-mhe],[disable mhe support]))
53 dnl mhe support is on by default, so define it unless --disable-mhe or the
54 dnl deprecated, undocumented --disable-nmh-mhe are specified.
55 if test x"$enable_mhe" != x"no" -a x"$enable_nmh_mhe" != x"no"; then
57 [Define to compile in support for the Emacs front-end mh-e.])dnl
60 dnl Do you want to disable use of locale functions
62 [Undefine if you don't want locale features. By default this is defined.])
63 AC_ARG_ENABLE([locale],
64 AC_HELP_STRING([--disable-locale], [turn off locale features]),
65 [if test x$enableval = xyes; then
71 dnl What method of locking to use?
73 AS_HELP_STRING([--with-locking=@<:@dot|fcntl|flock|lockf@:>@],
74 [specify the file locking method]))
76 if test x"$with_locking" = x"dot"; then
78 AC_DEFINE(DOT_LOCKING, 1, [Define to use dot based file locking.])dnl
79 elif test x"$with_locking" = x"flock"; then
81 AC_DEFINE(FLOCK_LOCKING, 1, [Define to use flock() based locking.])dnl
82 elif test x"$with_locking" = x"lockf"; then
84 AC_DEFINE(LOCKF_LOCKING, 1, [Define to use lockf() based locking.])dnl
85 elif test x"$with_locking" = x"fcntl"; then
87 AC_DEFINE(FCNTL_LOCKING, 1, [Define to use fnctl() based locking.])dnl
90 AC_DEFINE(DOT_LOCKING)dnl
94 dnl ----------------------------------------------------
95 dnl Default location is /usr/local/mmh/{bin,etc,lib,share/man}
96 dnl ----------------------------------------------------
97 AC_PREFIX_DEFAULT(/usr/local/mmh)
100 dnl ------------------
101 dnl CHECK THE COMPILER
102 dnl ------------------
103 dnl We want these before the checks,
104 dnl so the checks can modify their values.
105 test -z "$CFLAGS" && CFLAGS= auto_cflags=1
106 if test x"$enable_debug" = x"yes"; then
107 test -z "$LDFLAGS" && LDFLAGS=-g
112 AC_CACHE_CHECK(whether compiler supports -Wno-pointer-sign, nmh_cv_has_noptrsign,
113 [nmh_saved_cflags="$CFLAGS"
114 CFLAGS="$CFLAGS -Wno-pointer-sign"
115 AC_TRY_COMPILE([],[],nmh_cv_has_noptrsign=yes,nmh_cv_has_noptrsign=no)
116 CFLAGS="$nmh_saved_cflags"])
118 dnl if the user hasn't specified CFLAGS, then
119 dnl if compiler is gcc, then
120 dnl use -O2 and some warning flags
122 dnl We use -Wall; if the compiler supports it we also use -Wno-pointer-sign,
123 dnl because gcc 4 now produces a lot of new warnings which are probably mostly
124 dnl spurious and which in any case we don't want to deal with now.
125 if test "$nmh_cv_has_noptrsign" = "yes"; then
126 nmh_gcc_warnflags="-Wall -Wno-pointer-sign"
128 nmh_gcc_warnflags="-Wall"
131 if test -n "$auto_cflags"; then
132 if test x"$enable_debug" = x"yes"; then
133 if test -n "$GCC"; then
134 test -z "$CFLAGS" && CFLAGS="$nmh_gcc_warnflags -g" || CFLAGS="$CFLAGS $nmh_gcc_warnflags -g"
136 test -z "$CFLAGS" && CFLAGS=-g || CFLAGS="$CFLAGS -g"
139 if test -z "$LDFLAGS"; then
149 if test -n "$GCC"; then
150 test -z "$CFLAGS" && CFLAGS="$nmh_gcc_warnflags -O2" || CFLAGS="$CFLAGS $nmh_gcc_warnflags -O2"
152 test -z "$CFLAGS" && CFLAGS=-O || CFLAGS="$CFLAGS -O"
157 AC_C_CONST dnl Does compiler support `const'.
159 dnl ------------------
160 dnl CHECK FOR PROGRAMS
161 dnl ------------------
162 AC_PROG_MAKE_SET dnl Does make define $MAKE
163 AC_PROG_INSTALL dnl Check for BSD compatible `install'
164 AC_PROG_RANLIB dnl Check for `ranlib'
165 AC_PROG_AWK dnl Check for mawk,gawk,nawk, then awk
166 AC_PROG_LEX dnl Check for lex/flex
169 pathtmp=/usr/bin:/bin:/usr/local/bin:/usr/xpg4/bin:/usr/ucb
170 AC_PATH_PROG(cutpath, cut, no, [$pathtmp])
172 dnl ----------------------------------------------
173 dnl check for lclint, and lint if it doesn't exist
174 dnl ----------------------------------------------
175 AC_CHECK_PROG(linttmp1, lclint, lclint, no)dnl
176 if test x$ac_cv_prog_linttmp1 != xno ; then
177 LINT=$ac_cv_prog_linttmp1
178 LINTFLAGS="-weak +posixlib -macrovarprefixexclude"
180 AC_CHECK_PROG(linttmp2, lint, lint, no)dnl
181 if test x$ac_cv_prog_linttmp2 != xno ; then
182 LINT=$ac_cv_prog_linttmp2
185 LINT="echo 'No lint program found'"
190 AC_SUBST(LINTFLAGS)dnl
192 dnl try to figure out which one we've got
193 AC_CHECK_PROG(LIBTOOL, libtool, libtool, , [$pathtmp])
196 dnl Check for lorder and tsort commands
197 AC_CHECK_PROG(LORDER, lorder, lorder, no)dnl
198 AC_CHECK_PROG(TSORT, tsort, tsort, no)dnl
200 dnl If either doesn't exist, replace them with echo and cat
201 if test x$ac_cv_prog_LORDER != xlorder -o x$ac_cv_prog_TSORT != xtsort; then
206 dnl Mac OS X has lorder, but sh is too broken for it to work
207 dnl elif test -z "`lorder config/config.c 2>&1 | grep config/config.c`" ; then
210 dnl AC_SUBST(LORDER)dnl
211 dnl AC_SUBST(TSORT)dnl
214 dnl Check whether tsort can deal with loops
215 AC_CACHE_CHECK(whether tsort can deal with loops, nmh_cv_tsort_loop,
216 [if test -z "`echo a b b a | tsort 2>/dev/null | grep a`" ; then
219 nmh_cv_tsort_loop=yes
221 if test x$nmh_cv_tsort_loop = xno ; then
229 pathtmp=/usr/bin:/bin:/usr/local/bin:/usr/xpg4/bin:/usr/ucb
230 AC_PATH_PROG(lspath, ls, no, [$pathtmp])
232 dnl See how we get ls to display the owner and the group
233 if test "$lspath" != "no"; then
234 AC_CACHE_CHECK(how to get ls to show us the group ownership of a file,
236 [if test x"`$lspath -dl / | $AWK '{print $9}'`" = x"/"; then
237 dnl There were 9 parameters, so unless this is a really bizarre, nonstandard
238 dnl ls, it would seem -l gave us both the user and group. On this type of
239 dnl ls, -g makes _only_ the group be displayed (and not the user).
240 nmh_cv_ls_grpopt="-l"
242 dnl Looks like -l only gave us the user, so we need -g to get the group too.
243 nmh_cv_ls_grpopt="-lg"
247 dnl Look for `sendmail'
248 pathtmp=/usr/lib:/usr/sbin:/usr/etc:/usr/ucblib:/usr/bin:/bin
249 AC_PATH_PROG(sendmailpath, sendmail, /usr/sbin/sendmail, [$pathtmp])
252 pathtmp=/usr/bin:/bin:/usr/ucb:/usr/local/bin
253 AC_PATH_PROG(vipath, vi, /bin/vi, [$pathtmp])
255 dnl ----------------------------------------------------------
256 dnl FIND MAIL SPOOL AND SEE IF WE NEED TO MAKE inc SETGID MAIL
257 dnl ----------------------------------------------------------
258 AC_CACHE_CHECK(where mail spool is located, nmh_cv_mailspool,
259 [for mailspool in /var/mail dnl
262 /dev/null; dnl Just in case we fall through
264 test -d $mailspool && break
266 nmh_cv_mailspool=$mailspool
268 mailspool=$nmh_cv_mailspool
269 AC_SUBST(mailspool)dnl
271 dnl See whether the mail spool directory is world-writable.
272 if test "$lspath" != "no" -a "$cutpath" != "no"; then
273 AC_CACHE_CHECK(whether the mail spool is world-writable,
274 nmh_cv_mailspool_world_writable,
275 [if test "`$lspath -dlL $mailspool | $cutpath -c9`" = "-"; then
276 nmh_cv_mailspool_world_writable=no
278 nmh_cv_mailspool_world_writable=yes
282 dnl Also, check for liblockfile (as found on Debian systems)
283 AC_CHECK_HEADER(lockfile.h, AC_CHECK_LIB(lockfile, lockfile_create) )
285 dnl and whether its companion program dotlockfile is setgid
286 AC_PATH_PROG(dotlockfilepath, dotlockfile, no)
287 if test "$ac_cv_lib_lockfile_lockfile_create" != "no" ; then
288 if test "$ac_cv_path_dotlockfilepath" != "no" ; then
289 AC_CACHE_CHECK(whether dotlockfile is setgid, nmh_cv_dotlockfile_setgid,
290 [ if test -g "$ac_cv_path_dotlockfilepath" ; then
291 nmh_cv_dotlockfile_setgid=yes
293 nmh_cv_dotlockfile_setgid=no
298 dnl If mailspool is not world-writable and dotlockfile is not setgid,
299 dnl we need to #define MAILGROUP to 1 and make inc setgid.
300 if test x"$LOCKTYPE" = x"dot" -a x"$nmh_cv_mailspool_world_writable" = x"no" -a x"$nmh_cv_dotlockfile_setgid" != x"yes" ; then
301 dnl do we really need both of these?
302 AC_DEFINE(MAILGROUP,1,
303 [Define to 1 if you need to make `inc' set-group-id because your mail spool is not world writable. There are no guarantees as to the safety of doing this, but this #define will add some extra security checks.])dnl
306 AC_SUBST(SETGID_MAIL)dnl
308 dnl Use ls to see which group owns the mail spool directory.
309 AC_CACHE_CHECK(what group owns the mail spool, nmh_cv_ls_mail_grp,
310 [nmh_cv_ls_mail_grp=`$lspath -dL $nmh_cv_ls_grpopt $mailspool|$AWK '{print $4}'`
312 MAIL_SPOOL_GRP=$nmh_cv_ls_mail_grp
313 AC_SUBST(MAIL_SPOOL_GRP)dnl
315 dnl ------------------
316 dnl CHECK HEADER FILES
317 dnl ------------------
319 dnl On glibc we need to define at least the '_XOPEN_SOURCE' level of features,
320 dnl or wchar.h doesn't declare a prototype for wcwidth(). But if we only define
321 dnl that level then db.h won't compile. So we define _GNU_SOURCE which turns
322 dnl on everything. Perhaps other OSes need some feature switch set to get wcwidth()
323 dnl declared; if so they should have an entry added to this case statement.
324 dnl NB that we must define this on the compiler command line, not in config.h,
325 dnl because it must be set before any system header is included and there's no
326 dnl portable way to make sure that files generated by lex include config.h
327 dnl before system header files.
331 # Like DEFS, but doesn't get stomped on by configure when using config.h:
332 OURDEFS="$OURDEFS -D_GNU_SOURCE"
339 AC_CHECK_HEADERS(fcntl.h crypt.h termcap.h \
340 langinfo.h wchar.h wctype.h iconv.h \
341 sys/param.h sys/time.h sys/stream.h )
344 dnl Checks for _IO_write_ptr. A Linuxism used by nmh on linux. We
345 dnl really use a whole set of them, but this check should be
348 AC_CHECK_HEADER(libio.h, [
349 AC_EGREP_HEADER(_IO_write_ptr, libio.h, [
350 AC_DEFINE(LINUX_STDIO,1,[Use the Linux _IO_*_ptr defines from <libio.h>.]) ]) ])
352 AC_CHECK_HEADER([sys/ptem.h], AC_DEFINE(WINSIZE_IN_PTEM,1,
353 [Define to 1 if `struct winsize' requires <sys/ptem.h>.]),,
354 [[#if HAVE_SYS_STREAM_H
355 # include <sys/stream.h>
362 AC_CHECK_FUNCS(lstat nl_langinfo mbtowc wcwidth)
364 dnl Look for the initgroups() declaration. On AIX 4.[13], Solaris 4.1.3, and
365 dnl ULTRIX 4.2A the function is defined in libc but there's no declaration in
366 dnl any system header.
368 dnl On Solaris 2.[456], the declaration is in <grp.h>. On HP-UX 9-11 and
369 dnl (reportedly) FreeBSD 3.[23], it's in <unistd.h>. Any other locations we
371 AH_TEMPLATE(INITGROUPS_HEADER, [Define to the header containing the declaration of `initgroups'.])
372 AC_EGREP_HEADER(initgroups, grp.h, AC_DEFINE(INITGROUPS_HEADER, <grp.h>),
373 AC_EGREP_HEADER(initgroups, unistd.h,
374 AC_DEFINE(INITGROUPS_HEADER, <unistd.h>)))
376 dnl Check for multibyte character set support
377 if test "x$ac_cv_header_wchar_h" = "xyes" -a "x$ac_cv_header_wctype_h" = "xyes" \
378 -a "x$ac_cv_func_wcwidth" = "xyes" -a "x$ac_cv_func_mbtowc" = "xyes"; then
379 AC_DEFINE(MULTIBYTE_SUPPORT, 1,
380 [Define to enable support for multibyte character sets.])
383 dnl -------------------
384 dnl CHECK FOR LIBRARIES
385 dnl -------------------
386 dnl Check location of modf
387 AC_CHECK_FUNC(modf, , AC_CHECK_LIB(m, modf))
389 dnl Checks for network libraries (nsl, socket)
392 termcap_curses_order="termcap curses ncurses"
393 for lib in $termcap_curses_order; do
394 AC_CHECK_LIB(${lib}, tgetent, [TERMLIB="-l$lib"; break])
397 if test "x$TERMLIB" = "x"; then
398 echo 'Could not find tgetent() in any library.'
399 echo 'Is there a ncurses-devel package that you can install?'
408 dnl Find iconv. It may be in libiconv and may be iconv() or libiconv()
409 if test "x$ac_cv_header_iconv_h" = "xyes"; then
410 AC_CHECK_FUNC(iconv, ac_found_iconv=yes, ac_found_iconv=no)
411 if test "x$ac_found_iconv" = "xno"; then
412 AC_CHECK_LIB(iconv, iconv, ac_found_iconv=yes)
413 if test "x$ac_found_iconv" = "xno"; then
414 AC_CHECK_LIB(iconv, libiconv, ac_found_iconv=yes)
416 if test "x$ac_found_iconv" != "xno"; then
420 dnl Handle case where there is a native iconv but iconv.h is from libiconv
421 AC_CHECK_DECL(_libiconv_version,
422 [ AC_CHECK_LIB(iconv, libiconv, LIBS="-liconv $LIBS") ],,
423 [ #include <iconv.h> ])
426 if test "x$ac_found_iconv" = xyes; then
427 AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
430 dnl Check if iconv uses const in prototype declaration
431 if test "x$ac_found_iconv" = "xyes"; then
432 AC_CACHE_CHECK(for iconv declaration, ac_cv_iconv_const,
433 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
434 #include <iconv.h>]],
438 #if defined(__STDC__) || defined(__cplusplus)
439 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
443 [ac_cv_iconv_const=],
444 [ac_cv_iconv_const=const])])
445 AC_DEFINE_UNQUOTED([ICONV_CONST], $ac_cv_iconv_const,
446 [Define as const if the declaration of iconv() needs const.])
450 dnl ---------------------
451 dnl CHECK TERMCAP LIBRARY
452 dnl ---------------------
454 dnl Add the termcap library, so that the following configure
455 dnl tests will find it when it tries to link test programs.
456 nmh_save_LIBS="$LIBS"
457 LIBS="$TERMLIB $LIBS"
459 dnl Check if tgetent accepts NULL (and will allocate its own termcap buffer)
460 dnl Some termcaps reportedly accept a zero buffer, but then dump core
462 dnl Under Cygwin test program crashes but exit code is still 0. So,
463 dnl we test for a file that porgram should create
464 AH_TEMPLATE([TGETENT_ACCEPTS_NULL],
465 [Define to 1 if tgetent() accepts NULL as a buffer.])
466 AC_CACHE_CHECK(if tgetent accepts NULL,
467 nmh_cv_func_tgetent_accepts_null,
472 int r1 = tgetent(buf, "vt100");
473 int r2 = tgetent(NULL,"vt100");
474 if (r1 >= 0 && r1 == r2) {
478 creat("conftest.tgetent", 0640);
480 exit((r1 != r2) || r2 == -1);
483 if test -f conftest.tgetent; then
484 nmh_cv_func_tgetent_accepts_null=yes
486 nmh_cv_func_tgetent_accepts_null=no
488 nmh_cv_func_tgetent_accepts_null=no,
489 nmh_cv_func_tgetent_accepts_null=no)])
490 if test x$nmh_cv_func_tgetent_accepts_null = xyes; then
491 AC_DEFINE(TGETENT_ACCEPTS_NULL)
493 AC_CACHE_CHECK(if tgetent returns 0 on success,
494 nmh_cv_func_tgetent_zero_success,
499 int r1 = tgetent(buf, "!@#$%^&*");
500 int r2 = tgetent(buf, "vt100");
501 if (r1 < 0 && r2 == 0) {
505 creat("conftest.tgetent0", 0640);
510 if test -f conftest.tgetent0; then
511 nmh_cv_func_tgetent_zero_success=yes
513 nmh_cv_func_tgetent_zero_success=no
515 nmh_cv_func_tgetent_zero_success=no,
516 nmh_cv_func_tgetent_zero_success=no)])
517 AH_TEMPLATE([TGETENT_SUCCESS],
518 [Define to what tgetent() returns on success (0 on HP-UX X/Open curses).])
519 if test x$nmh_cv_func_tgetent_zero_success = xyes; then
520 AC_DEFINE(TGETENT_SUCCESS, 0)
522 AC_DEFINE(TGETENT_SUCCESS, 1)
525 dnl Now put the libraries back to what it was before we
526 dnl starting checking the termcap library.
527 LIBS="$nmh_save_LIBS"
542 dnl For platforms such as FreeBSD that have tm_gmtoff in struct tm.
543 dnl (FreeBSD has a timezone() function but not a timezone global
544 dnl variable that is visible).
545 AC_CHECK_MEMBERS([struct tm.tm_gmtoff],,,[#include <time.h>])
547 AC_STRUCT_DIRENT_D_TYPE
549 dnl Where is <signal.h> located? Needed as input for signames.awk
550 AC_CACHE_CHECK(where signal.h is located, nmh_cv_path_signal_h,
551 [for SIGNAL_H in /usr/include/bsd/sys/signal.h dnl Next
552 /usr/include/asm/signal.h dnl Linux 1.3.0 and above
553 /usr/include/asm/signum.h dnl some versions of Linux/Alpha
554 /usr/include/linux/signal.h dnl Linux up to 1.2.11
555 /usr/include/sys/signal.h dnl Almost everybody else
556 /dev/null; dnl Just in case we fall through
558 test -f $SIGNAL_H && \
559 grep '#[ ]*define[ ][ ]*SIG[0-9A-Z]*[ ]*[0-9][0-9]*' $SIGNAL_H > /dev/null && \
562 nmh_cv_path_signal_h=$SIGNAL_H
564 SIGNAL_H=$nmh_cv_path_signal_h
565 AC_SUBST(SIGNAL_H)dnl
571 AC_CONFIG_FILES(Makefile config/Makefile h/Makefile sbr/Makefile uip/Makefile \
572 etc/Makefile docs/Makefile man/Makefile)
573 AC_CONFIG_COMMANDS([stamp],[test -z "$CONFIG_HEADERS" || echo > stamp-h])
576 dnl These odd looking assignments are done to expand out unexpanded
577 dnl variables in bindir et al (for instance mandir is '${datarootdir}/man',
578 dnl but expanding that gives '${prefix}/share/man', so we need to expand
579 dnl again to get the final answer.
580 dnl We only use the expanded versions to print the install paths in
581 dnl the final summary and should use them nowhere else (see the autoconf
582 dnl docs for the rationale for bindir etc being unexpanded).
583 eval "nmhbin=${bindir}"; eval "nmhbin=${nmhbin}"
584 eval "nmhsysconf=${sysconfdir}"; eval "nmhsysconf=${nmhsysconf}"
585 eval "nmhlib=${libdir}"; eval "nmhlib=${nmhlib}"
586 eval "nmhman=${mandir}"; eval "nmhman=${nmhman}"
591 mmh version : AC_PACKAGE_VERSION
592 target os : ${target}
594 compiler flags : ${CFLAGS}
595 linker flags : ${LDFLAGS}
596 definitions : ${OURDEFS}
597 source code location : ${srcdir}
599 binary install path : ${nmhbin}
600 library install path : ${nmhlib}
601 config install path : ${nmhsysconf}
602 man page install path : ${nmhman}
604 sendmail path : ${sendmailpath}
605 mail spool : ${mailspool}
607 file locking type : ${LOCKTYPE}