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 to disable use of locale functions
51 [Undefine if you don't want locale features. By default this is defined.])
52 AC_ARG_ENABLE([locale],
53 AC_HELP_STRING([--disable-locale], [turn off locale features]),
54 [if test x$enableval = xyes; then
60 dnl What method of locking to use?
62 AS_HELP_STRING([--with-locking=@<:@dot|fcntl|flock|lockf@:>@],
63 [specify the file locking method]))
65 if test x"$with_locking" = x"dot"; then
67 AC_DEFINE(DOT_LOCKING, 1, [Define to use dot based file locking.])dnl
68 elif test x"$with_locking" = x"flock"; then
70 AC_DEFINE(FLOCK_LOCKING, 1, [Define to use flock() based locking.])dnl
71 elif test x"$with_locking" = x"lockf"; then
73 AC_DEFINE(LOCKF_LOCKING, 1, [Define to use lockf() based locking.])dnl
74 elif test x"$with_locking" = x"fcntl"; then
76 AC_DEFINE(FCNTL_LOCKING, 1, [Define to use fnctl() based locking.])dnl
79 AC_DEFINE(DOT_LOCKING)dnl
83 dnl ----------------------------------------------------
84 dnl Default location is /usr/local/mmh/{bin,etc,lib,share/man}
85 dnl ----------------------------------------------------
86 AC_PREFIX_DEFAULT(/usr/local/mmh)
89 dnl ------------------
90 dnl CHECK THE COMPILER
91 dnl ------------------
92 dnl We want these before the checks,
93 dnl so the checks can modify their values.
94 test -z "$CFLAGS" && CFLAGS= auto_cflags=1
95 if test x"$enable_debug" = x"yes"; then
96 test -z "$LDFLAGS" && LDFLAGS=-g
101 AC_CACHE_CHECK(whether compiler supports -Wno-pointer-sign, nmh_cv_has_noptrsign,
102 [nmh_saved_cflags="$CFLAGS"
103 CFLAGS="$CFLAGS -Wno-pointer-sign"
104 AC_TRY_COMPILE([],[],nmh_cv_has_noptrsign=yes,nmh_cv_has_noptrsign=no)
105 CFLAGS="$nmh_saved_cflags"])
107 dnl if the user hasn't specified CFLAGS, then
108 dnl if compiler is gcc, then
109 dnl use -O2 and some warning flags
111 dnl We use -Wall; if the compiler supports it we also use -Wno-pointer-sign,
112 dnl because gcc 4 now produces a lot of new warnings which are probably mostly
113 dnl spurious and which in any case we don't want to deal with now.
114 if test "$nmh_cv_has_noptrsign" = "yes"; then
115 nmh_gcc_warnflags="-Wall -Wno-pointer-sign"
117 nmh_gcc_warnflags="-Wall"
120 if test -n "$auto_cflags"; then
121 if test x"$enable_debug" = x"yes"; then
122 if test -n "$GCC"; then
123 test -z "$CFLAGS" && CFLAGS="$nmh_gcc_warnflags -g" || CFLAGS="$CFLAGS $nmh_gcc_warnflags -g"
125 test -z "$CFLAGS" && CFLAGS=-g || CFLAGS="$CFLAGS -g"
128 if test -z "$LDFLAGS"; then
138 if test -n "$GCC"; then
139 test -z "$CFLAGS" && CFLAGS="$nmh_gcc_warnflags -O2" || CFLAGS="$CFLAGS $nmh_gcc_warnflags -O2"
141 test -z "$CFLAGS" && CFLAGS=-O || CFLAGS="$CFLAGS -O"
146 AC_C_CONST dnl Does compiler support `const'.
148 dnl ------------------
149 dnl CHECK FOR PROGRAMS
150 dnl ------------------
151 AC_PROG_MAKE_SET dnl Does make define $MAKE
152 AC_PROG_INSTALL dnl Check for BSD compatible `install'
153 AC_PROG_RANLIB dnl Check for `ranlib'
154 AC_PROG_AWK dnl Check for mawk,gawk,nawk, then awk
155 AC_PROG_LEX dnl Check for lex/flex
158 pathtmp=/usr/bin:/bin:/usr/local/bin:/usr/xpg4/bin:/usr/ucb
159 AC_PATH_PROG(cutpath, cut, no, [$pathtmp])
161 dnl ----------------------------------------------
162 dnl check for lclint, and lint if it doesn't exist
163 dnl ----------------------------------------------
164 AC_CHECK_PROG(linttmp1, lclint, lclint, no)dnl
165 if test x$ac_cv_prog_linttmp1 != xno ; then
166 LINT=$ac_cv_prog_linttmp1
167 LINTFLAGS="-weak +posixlib -macrovarprefixexclude"
169 AC_CHECK_PROG(linttmp2, lint, lint, no)dnl
170 if test x$ac_cv_prog_linttmp2 != xno ; then
171 LINT=$ac_cv_prog_linttmp2
174 LINT="echo 'No lint program found'"
179 AC_SUBST(LINTFLAGS)dnl
181 dnl try to figure out which one we've got
182 AC_CHECK_PROG(LIBTOOL, libtool, libtool, , [$pathtmp])
185 dnl Check for lorder and tsort commands
186 AC_CHECK_PROG(LORDER, lorder, lorder, no)dnl
187 AC_CHECK_PROG(TSORT, tsort, tsort, no)dnl
189 dnl If either doesn't exist, replace them with echo and cat
190 if test x$ac_cv_prog_LORDER != xlorder -o x$ac_cv_prog_TSORT != xtsort; then
195 dnl Mac OS X has lorder, but sh is too broken for it to work
196 dnl elif test -z "`lorder config/config.c 2>&1 | grep config/config.c`" ; then
199 dnl AC_SUBST(LORDER)dnl
200 dnl AC_SUBST(TSORT)dnl
203 dnl Check whether tsort can deal with loops
204 AC_CACHE_CHECK(whether tsort can deal with loops, nmh_cv_tsort_loop,
205 [if test -z "`echo a b b a | tsort 2>/dev/null | grep a`" ; then
208 nmh_cv_tsort_loop=yes
210 if test x$nmh_cv_tsort_loop = xno ; then
218 pathtmp=/usr/bin:/bin:/usr/local/bin:/usr/xpg4/bin:/usr/ucb
219 AC_PATH_PROG(lspath, ls, no, [$pathtmp])
221 dnl See how we get ls to display the owner and the group
222 if test "$lspath" != "no"; then
223 AC_CACHE_CHECK(how to get ls to show us the group ownership of a file,
225 [if test x"`$lspath -dl / | $AWK '{print $9}'`" = x"/"; then
226 dnl There were 9 parameters, so unless this is a really bizarre, nonstandard
227 dnl ls, it would seem -l gave us both the user and group. On this type of
228 dnl ls, -g makes _only_ the group be displayed (and not the user).
229 nmh_cv_ls_grpopt="-l"
231 dnl Looks like -l only gave us the user, so we need -g to get the group too.
232 nmh_cv_ls_grpopt="-lg"
236 dnl Look for `sendmail'
237 pathtmp=/usr/lib:/usr/sbin:/usr/etc:/usr/ucblib:/usr/bin:/bin
238 AC_PATH_PROG(sendmailpath, sendmail, /usr/sbin/sendmail, [$pathtmp])
241 pathtmp=/usr/bin:/bin:/usr/ucb:/usr/local/bin
242 AC_PATH_PROG(vipath, vi, /bin/vi, [$pathtmp])
244 dnl ----------------------------------------------------------
245 dnl FIND MAIL SPOOL AND SEE IF WE NEED TO MAKE inc SETGID MAIL
246 dnl ----------------------------------------------------------
247 AC_CACHE_CHECK(where mail spool is located, nmh_cv_mailspool,
248 [for mailspool in /var/mail dnl
251 /dev/null; dnl Just in case we fall through
253 test -d $mailspool && break
255 nmh_cv_mailspool=$mailspool
257 mailspool=$nmh_cv_mailspool
258 AC_SUBST(mailspool)dnl
260 dnl See whether the mail spool directory is world-writable.
261 if test "$lspath" != "no" -a "$cutpath" != "no"; then
262 AC_CACHE_CHECK(whether the mail spool is world-writable,
263 nmh_cv_mailspool_world_writable,
264 [if test "`$lspath -dlL $mailspool | $cutpath -c9`" = "-"; then
265 nmh_cv_mailspool_world_writable=no
267 nmh_cv_mailspool_world_writable=yes
271 dnl Also, check for liblockfile (as found on Debian systems)
272 AC_CHECK_HEADER(lockfile.h, AC_CHECK_LIB(lockfile, lockfile_create) )
274 dnl and whether its companion program dotlockfile is setgid
275 AC_PATH_PROG(dotlockfilepath, dotlockfile, no)
276 if test "$ac_cv_lib_lockfile_lockfile_create" != "no" ; then
277 if test "$ac_cv_path_dotlockfilepath" != "no" ; then
278 AC_CACHE_CHECK(whether dotlockfile is setgid, nmh_cv_dotlockfile_setgid,
279 [ if test -g "$ac_cv_path_dotlockfilepath" ; then
280 nmh_cv_dotlockfile_setgid=yes
282 nmh_cv_dotlockfile_setgid=no
287 dnl If mailspool is not world-writable and dotlockfile is not setgid,
288 dnl we need to #define MAILGROUP to 1 and make inc setgid.
289 if test x"$LOCKTYPE" = x"dot" -a x"$nmh_cv_mailspool_world_writable" = x"no" -a x"$nmh_cv_dotlockfile_setgid" != x"yes" ; then
290 dnl do we really need both of these?
291 AC_DEFINE(MAILGROUP,1,
292 [Define to 1 if you need to make `inc' set-group-id because your mail spool is not world writable. There are no guarantees as to the safety of doing this, but this #define will add some extra security checks.])dnl
295 AC_SUBST(SETGID_MAIL)dnl
297 dnl Use ls to see which group owns the mail spool directory.
298 AC_CACHE_CHECK(what group owns the mail spool, nmh_cv_ls_mail_grp,
299 [nmh_cv_ls_mail_grp=`$lspath -dL $nmh_cv_ls_grpopt $mailspool|$AWK '{print $4}'`
301 MAIL_SPOOL_GRP=$nmh_cv_ls_mail_grp
302 AC_SUBST(MAIL_SPOOL_GRP)dnl
304 dnl ------------------
305 dnl CHECK HEADER FILES
306 dnl ------------------
308 dnl On glibc we need to define at least the '_XOPEN_SOURCE' level of features,
309 dnl or wchar.h doesn't declare a prototype for wcwidth(). But if we only define
310 dnl that level then db.h won't compile. So we define _GNU_SOURCE which turns
311 dnl on everything. Perhaps other OSes need some feature switch set to get wcwidth()
312 dnl declared; if so they should have an entry added to this case statement.
313 dnl NB that we must define this on the compiler command line, not in config.h,
314 dnl because it must be set before any system header is included and there's no
315 dnl portable way to make sure that files generated by lex include config.h
316 dnl before system header files.
320 # Like DEFS, but doesn't get stomped on by configure when using config.h:
321 OURDEFS="$OURDEFS -D_GNU_SOURCE"
328 AC_CHECK_HEADERS(fcntl.h crypt.h termcap.h \
329 langinfo.h wchar.h wctype.h iconv.h \
330 sys/param.h sys/time.h sys/stream.h )
333 dnl Checks for _IO_write_ptr. A Linuxism used by nmh on linux. We
334 dnl really use a whole set of them, but this check should be
337 AC_CHECK_HEADER(libio.h, [
338 AC_EGREP_HEADER(_IO_write_ptr, libio.h, [
339 AC_DEFINE(LINUX_STDIO,1,[Use the Linux _IO_*_ptr defines from <libio.h>.]) ]) ])
341 AC_CHECK_HEADER([sys/ptem.h], AC_DEFINE(WINSIZE_IN_PTEM,1,
342 [Define to 1 if `struct winsize' requires <sys/ptem.h>.]),,
343 [[#if HAVE_SYS_STREAM_H
344 # include <sys/stream.h>
351 AC_CHECK_FUNCS(nl_langinfo mbtowc wcwidth)
353 dnl Look for the initgroups() declaration. On AIX 4.[13], Solaris 4.1.3, and
354 dnl ULTRIX 4.2A the function is defined in libc but there's no declaration in
355 dnl any system header.
357 dnl On Solaris 2.[456], the declaration is in <grp.h>. On HP-UX 9-11 and
358 dnl (reportedly) FreeBSD 3.[23], it's in <unistd.h>. Any other locations we
360 AH_TEMPLATE(INITGROUPS_HEADER, [Define to the header containing the declaration of `initgroups'.])
361 AC_EGREP_HEADER(initgroups, grp.h, AC_DEFINE(INITGROUPS_HEADER, <grp.h>),
362 AC_EGREP_HEADER(initgroups, unistd.h,
363 AC_DEFINE(INITGROUPS_HEADER, <unistd.h>)))
365 dnl Check for multibyte character set support
366 if test "x$ac_cv_header_wchar_h" = "xyes" -a "x$ac_cv_header_wctype_h" = "xyes" \
367 -a "x$ac_cv_func_wcwidth" = "xyes" -a "x$ac_cv_func_mbtowc" = "xyes"; then
368 AC_DEFINE(MULTIBYTE_SUPPORT, 1,
369 [Define to enable support for multibyte character sets.])
372 dnl -------------------
373 dnl CHECK FOR LIBRARIES
374 dnl -------------------
375 dnl Check location of modf
376 AC_CHECK_FUNC(modf, , AC_CHECK_LIB(m, modf))
378 dnl Checks for network libraries (nsl, socket)
381 termcap_curses_order="termcap curses ncurses"
382 for lib in $termcap_curses_order; do
383 AC_CHECK_LIB(${lib}, tgetent, [TERMLIB="-l$lib"; break])
386 if test "x$TERMLIB" = "x"; then
387 echo 'Could not find tgetent() in any library.'
388 echo 'Is there a ncurses-devel package that you can install?'
397 dnl Find iconv. It may be in libiconv and may be iconv() or libiconv()
398 if test "x$ac_cv_header_iconv_h" = "xyes"; then
399 AC_CHECK_FUNC(iconv, ac_found_iconv=yes, ac_found_iconv=no)
400 if test "x$ac_found_iconv" = "xno"; then
401 AC_CHECK_LIB(iconv, iconv, ac_found_iconv=yes)
402 if test "x$ac_found_iconv" = "xno"; then
403 AC_CHECK_LIB(iconv, libiconv, ac_found_iconv=yes)
405 if test "x$ac_found_iconv" != "xno"; then
409 dnl Handle case where there is a native iconv but iconv.h is from libiconv
410 AC_CHECK_DECL(_libiconv_version,
411 [ AC_CHECK_LIB(iconv, libiconv, LIBS="-liconv $LIBS") ],,
412 [ #include <iconv.h> ])
415 if test "x$ac_found_iconv" = xyes; then
416 AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
419 dnl Check if iconv uses const in prototype declaration
420 if test "x$ac_found_iconv" = "xyes"; then
421 AC_CACHE_CHECK(for iconv declaration, ac_cv_iconv_const,
422 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
423 #include <iconv.h>]],
427 #if defined(__STDC__) || defined(__cplusplus)
428 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
432 [ac_cv_iconv_const=],
433 [ac_cv_iconv_const=const])])
434 AC_DEFINE_UNQUOTED([ICONV_CONST], $ac_cv_iconv_const,
435 [Define as const if the declaration of iconv() needs const.])
439 dnl ---------------------
440 dnl CHECK TERMCAP LIBRARY
441 dnl ---------------------
443 dnl Add the termcap library, so that the following configure
444 dnl tests will find it when it tries to link test programs.
445 nmh_save_LIBS="$LIBS"
446 LIBS="$TERMLIB $LIBS"
448 dnl Check if tgetent accepts NULL (and will allocate its own termcap buffer)
449 dnl Some termcaps reportedly accept a zero buffer, but then dump core
451 dnl Under Cygwin test program crashes but exit code is still 0. So,
452 dnl we test for a file that porgram should create
453 AH_TEMPLATE([TGETENT_ACCEPTS_NULL],
454 [Define to 1 if tgetent() accepts NULL as a buffer.])
455 AC_CACHE_CHECK(if tgetent accepts NULL,
456 nmh_cv_func_tgetent_accepts_null,
461 int r1 = tgetent(buf, "vt100");
462 int r2 = tgetent(NULL,"vt100");
463 if (r1 >= 0 && r1 == r2) {
467 creat("conftest.tgetent", 0640);
469 exit((r1 != r2) || r2 == -1);
472 if test -f conftest.tgetent; then
473 nmh_cv_func_tgetent_accepts_null=yes
475 nmh_cv_func_tgetent_accepts_null=no
477 nmh_cv_func_tgetent_accepts_null=no,
478 nmh_cv_func_tgetent_accepts_null=no)])
479 if test x$nmh_cv_func_tgetent_accepts_null = xyes; then
480 AC_DEFINE(TGETENT_ACCEPTS_NULL)
482 AC_CACHE_CHECK(if tgetent returns 0 on success,
483 nmh_cv_func_tgetent_zero_success,
488 int r1 = tgetent(buf, "!@#$%^&*");
489 int r2 = tgetent(buf, "vt100");
490 if (r1 < 0 && r2 == 0) {
494 creat("conftest.tgetent0", 0640);
499 if test -f conftest.tgetent0; then
500 nmh_cv_func_tgetent_zero_success=yes
502 nmh_cv_func_tgetent_zero_success=no
504 nmh_cv_func_tgetent_zero_success=no,
505 nmh_cv_func_tgetent_zero_success=no)])
506 AH_TEMPLATE([TGETENT_SUCCESS],
507 [Define to what tgetent() returns on success (0 on HP-UX X/Open curses).])
508 if test x$nmh_cv_func_tgetent_zero_success = xyes; then
509 AC_DEFINE(TGETENT_SUCCESS, 0)
511 AC_DEFINE(TGETENT_SUCCESS, 1)
514 dnl Now put the libraries back to what it was before we
515 dnl starting checking the termcap library.
516 LIBS="$nmh_save_LIBS"
531 dnl For platforms such as FreeBSD that have tm_gmtoff in struct tm.
532 dnl (FreeBSD has a timezone() function but not a timezone global
533 dnl variable that is visible).
534 AC_CHECK_MEMBERS([struct tm.tm_gmtoff],,,[#include <time.h>])
536 AC_STRUCT_DIRENT_D_TYPE
538 dnl Where is <signal.h> located? Needed as input for signames.awk
539 AC_CACHE_CHECK(where signal.h is located, nmh_cv_path_signal_h,
540 [for SIGNAL_H in /usr/include/bsd/sys/signal.h dnl Next
541 /usr/include/asm/signal.h dnl Linux 1.3.0 and above
542 /usr/include/asm/signum.h dnl some versions of Linux/Alpha
543 /usr/include/linux/signal.h dnl Linux up to 1.2.11
544 /usr/include/sys/signal.h dnl Almost everybody else
545 /dev/null; dnl Just in case we fall through
547 test -f $SIGNAL_H && \
548 grep '#[ ]*define[ ][ ]*SIG[0-9A-Z]*[ ]*[0-9][0-9]*' $SIGNAL_H > /dev/null && \
551 nmh_cv_path_signal_h=$SIGNAL_H
553 SIGNAL_H=$nmh_cv_path_signal_h
554 AC_SUBST(SIGNAL_H)dnl
560 AC_CONFIG_FILES(Makefile config/Makefile h/Makefile sbr/Makefile uip/Makefile \
561 etc/Makefile docs/Makefile man/Makefile)
562 AC_CONFIG_COMMANDS([stamp],[test -z "$CONFIG_HEADERS" || echo > stamp-h])
565 dnl These odd looking assignments are done to expand out unexpanded
566 dnl variables in bindir et al (for instance mandir is '${datarootdir}/man',
567 dnl but expanding that gives '${prefix}/share/man', so we need to expand
568 dnl again to get the final answer.
569 dnl We only use the expanded versions to print the install paths in
570 dnl the final summary and should use them nowhere else (see the autoconf
571 dnl docs for the rationale for bindir etc being unexpanded).
572 eval "nmhbin=${bindir}"; eval "nmhbin=${nmhbin}"
573 eval "nmhsysconf=${sysconfdir}"; eval "nmhsysconf=${nmhsysconf}"
574 eval "nmhlib=${libdir}"; eval "nmhlib=${nmhlib}"
575 eval "nmhman=${mandir}"; eval "nmhman=${nmhman}"
580 mmh version : AC_PACKAGE_VERSION
581 target os : ${target}
583 compiler flags : ${CFLAGS}
584 linker flags : ${LDFLAGS}
585 definitions : ${OURDEFS}
586 source code location : ${srcdir}
588 binary install path : ${nmhbin}
589 library install path : ${nmhlib}
590 config install path : ${nmhsysconf}
591 man page install path : ${nmhman}
593 sendmail path : ${sendmailpath}
594 mail spool : ${mailspool}
596 file locking type : ${LOCKTYPE}