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/mh.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 -dl $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 termcap_curses_order="termcap curses ncurses"
368 for lib in $termcap_curses_order; do
369 AC_CHECK_LIB(${lib}, tgetent, [TERMLIB="-l$lib"; break])
372 if test "x$TERMLIB" = "x"; then
373 echo 'Could not find tgetent() in any library.'
374 echo 'Is there a ncurses-devel package that you can install?'
383 dnl Find iconv. It may be in libiconv and may be iconv() or libiconv()
384 if test "x$ac_cv_header_iconv_h" = "xyes"; then
385 AC_CHECK_FUNC(iconv, ac_found_iconv=yes, ac_found_iconv=no)
386 if test "x$ac_found_iconv" = "xno"; then
387 AC_CHECK_LIB(iconv, iconv, ac_found_iconv=yes)
388 if test "x$ac_found_iconv" = "xno"; then
389 AC_CHECK_LIB(iconv, libiconv, ac_found_iconv=yes)
391 if test "x$ac_found_iconv" != "xno"; then
395 dnl Handle case where there is a native iconv but iconv.h is from libiconv
396 AC_CHECK_DECL(_libiconv_version,
397 [ AC_CHECK_LIB(iconv, libiconv, LIBS="-liconv $LIBS") ],,
398 [ #include <iconv.h> ])
401 if test "x$ac_found_iconv" = xyes; then
402 AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
405 dnl Check if iconv uses const in prototype declaration
406 if test "x$ac_found_iconv" = "xyes"; then
407 AC_CACHE_CHECK(for iconv declaration, ac_cv_iconv_const,
408 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
409 #include <iconv.h>]],
413 #if defined(__STDC__) || defined(__cplusplus)
414 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
418 [ac_cv_iconv_const=],
419 [ac_cv_iconv_const=const])])
420 AC_DEFINE_UNQUOTED([ICONV_CONST], $ac_cv_iconv_const,
421 [Define as const if the declaration of iconv() needs const.])
425 dnl ---------------------
426 dnl CHECK TERMCAP LIBRARY
427 dnl ---------------------
429 dnl Add the termcap library, so that the following configure
430 dnl tests will find it when it tries to link test programs.
431 nmh_save_LIBS="$LIBS"
432 LIBS="$TERMLIB $LIBS"
434 dnl Check if tgetent accepts NULL (and will allocate its own termcap buffer)
435 dnl Some termcaps reportedly accept a zero buffer, but then dump core
437 dnl Under Cygwin test program crashes but exit code is still 0. So,
438 dnl we test for a file that porgram should create
439 AH_TEMPLATE([TGETENT_ACCEPTS_NULL],
440 [Define to 1 if tgetent() accepts NULL as a buffer.])
441 AC_CACHE_CHECK(if tgetent accepts NULL,
442 nmh_cv_func_tgetent_accepts_null,
447 int r1 = tgetent(buf, "vt100");
448 int r2 = tgetent(NULL,"vt100");
449 if (r1 >= 0 && r1 == r2) {
453 creat("conftest.tgetent", 0640);
455 exit((r1 != r2) || r2 == -1);
458 if test -f conftest.tgetent; then
459 nmh_cv_func_tgetent_accepts_null=yes
461 nmh_cv_func_tgetent_accepts_null=no
463 nmh_cv_func_tgetent_accepts_null=no,
464 nmh_cv_func_tgetent_accepts_null=no)])
465 if test x$nmh_cv_func_tgetent_accepts_null = xyes; then
466 AC_DEFINE(TGETENT_ACCEPTS_NULL)
468 AC_CACHE_CHECK(if tgetent returns 0 on success,
469 nmh_cv_func_tgetent_zero_success,
474 int r1 = tgetent(buf, "!@#$%^&*");
475 int r2 = tgetent(buf, "vt100");
476 if (r1 < 0 && r2 == 0) {
480 creat("conftest.tgetent0", 0640);
485 if test -f conftest.tgetent0; then
486 nmh_cv_func_tgetent_zero_success=yes
488 nmh_cv_func_tgetent_zero_success=no
490 nmh_cv_func_tgetent_zero_success=no,
491 nmh_cv_func_tgetent_zero_success=no)])
492 AH_TEMPLATE([TGETENT_SUCCESS],
493 [Define to what tgetent() returns on success (0 on HP-UX X/Open curses).])
494 if test x$nmh_cv_func_tgetent_zero_success = xyes; then
495 AC_DEFINE(TGETENT_SUCCESS, 0)
497 AC_DEFINE(TGETENT_SUCCESS, 1)
500 dnl Now put the libraries back to what it was before we
501 dnl starting checking the termcap library.
502 LIBS="$nmh_save_LIBS"
517 dnl For platforms such as FreeBSD that have tm_gmtoff in struct tm.
518 dnl (FreeBSD has a timezone() function but not a timezone global
519 dnl variable that is visible).
520 AC_CHECK_MEMBERS([struct tm.tm_gmtoff],,,[#include <time.h>])
522 AC_STRUCT_DIRENT_D_TYPE
524 dnl Where is <signal.h> located? Needed as input for signames.awk
525 AC_CACHE_CHECK(where signal.h is located, nmh_cv_path_signal_h,
526 [for SIGNAL_H in /usr/include/bsd/sys/signal.h dnl Next
527 /usr/include/asm/signal.h dnl Linux 1.3.0 and above
528 /usr/include/asm/signum.h dnl some versions of Linux/Alpha
529 /usr/include/linux/signal.h dnl Linux up to 1.2.11
530 /usr/include/sys/signal.h dnl Almost everybody else
531 /dev/null; dnl Just in case we fall through
533 test -f $SIGNAL_H && \
534 grep '#[ ]*define[ ][ ]*SIG[0-9A-Z]*[ ]*[0-9][0-9]*' $SIGNAL_H > /dev/null && \
537 nmh_cv_path_signal_h=$SIGNAL_H
539 SIGNAL_H=$nmh_cv_path_signal_h
540 AC_SUBST(SIGNAL_H)dnl
546 AC_CONFIG_FILES(Makefile config/Makefile h/Makefile sbr/Makefile uip/Makefile \
547 etc/Makefile man/Makefile)
548 AC_CONFIG_COMMANDS([stamp],[test -z "$CONFIG_HEADERS" || echo > stamp-h])
551 dnl These odd looking assignments are done to expand out unexpanded
552 dnl variables in bindir et al (for instance mandir is '${datarootdir}/man',
553 dnl but expanding that gives '${prefix}/share/man', so we need to expand
554 dnl again to get the final answer.
555 dnl We only use the expanded versions to print the install paths in
556 dnl the final summary and should use them nowhere else (see the autoconf
557 dnl docs for the rationale for bindir etc being unexpanded).
558 eval "nmhbin=${bindir}"; eval "nmhbin=${nmhbin}"
559 eval "nmhsysconf=${sysconfdir}"; eval "nmhsysconf=${nmhsysconf}"
560 eval "nmhlib=${libdir}"; eval "nmhlib=${nmhlib}"
561 eval "nmhman=${mandir}"; eval "nmhman=${nmhman}"
566 mmh version : AC_PACKAGE_VERSION
567 target os : ${target}
569 compiler flags : ${CFLAGS}
570 linker flags : ${LDFLAGS}
571 definitions : ${OURDEFS}
572 source code location : ${srcdir}
574 binary install path : ${nmhbin}
575 library install path : ${nmhlib}
576 config install path : ${nmhsysconf}
577 man page install path : ${nmhman}
579 sendmail path : ${sendmailpath}
580 mail spool : ${mailspool}
582 file locking type : ${LOCKTYPE}