xref: /freebsd/contrib/bmake/configure.in (revision ebacd8013fe5f7fdf9f6a5b286f6680dd2891036) 
1dnl
2dnl RCSid:
3dnl	$Id: configure.in,v 1.87 2022/09/09 20:00:53 sjg Exp $
4dnl
5dnl Process this file with autoconf to produce a configure script
6dnl
7AC_PREREQ([2.71])
8AC_INIT([bmake],[20220909],[sjg@NetBSD.org])
9AC_CONFIG_HEADERS(config.h)
10
11dnl make srcdir absolute
12case "$srcdir" in
13/*) ;;
14*) srcdir=`cd $srcdir && 'pwd'`;;
15esac
16
17dnl get _MAKE_VERSION
18. $srcdir/VERSION
19OS=`uname -s`
20
21dnl function to set DEFSHELL_INDEX
22use_defshell() {
23	case "$defshell_path$DEFSHELL_INDEX" in
24	"") ;;
25	*) return 0;;
26	esac
27	case "$1" in
28	*csh) # we must be desperate
29		DEFSHELL_INDEX=DEFSHELL_INDEX_CSH;;
30	*ksh)
31		DEFSHELL_INDEX=DEFSHELL_INDEX_KSH;;
32	sh|/bin/sh)
33		DEFSHELL_INDEX=DEFSHELL_INDEX_SH;;
34	*)	DEFSHELL_INDEX=DEFSHELL_INDEX_CUSTOM
35		defshell_path=$1
36		;;
37	esac
38	case "$1" in
39	/bin/*) ;;
40	*/*) defshell_path=$1;;
41	esac
42}
43dnl
44AC_ARG_WITH(defshell,
45[  --with-defshell=SHELL  use SHELL by default - must be sh compatible, use sh or ksh to pick the internal definitions],
46[case "${withval}" in
47yes)   AC_MSG_ERROR(bad value ${withval} given for bmake DEFSHELL) ;;
48no)    ;;
49*)     use_defshell $with_defshell;;
50esac])
51dnl
52case "$OS" in
53CYGWIN*|MINGW*) use_makefile=no;;
54*) use_makefile=yes;;
55esac
56AC_ARG_WITH(makefile,
57[  --without-makefile disable use of generated makefile],
58[case "${withval}" in
59yes|no) use_makefile=${withval};;
60*) AC_MSG_ERROR(bad value ${withval} given for makefile) ;;
61esac])
62dnl
63use_meta=yes
64AC_ARG_WITH(meta,
65[  --without-meta disable use of meta-mode],
66[case "${withval}" in
67yes|no) use_meta=${withval};;
68*) AC_MSG_ERROR(bad value ${withval} given for meta) ;;
69esac])
70dnl
71AC_ARG_WITH(filemon,
72[  --with-filemon={no,dev,ktrace,path/filemon.h} indicate filemon method for meta-mode. Path to filemon.h implies dev],
73[ case "/${withval}" in
74/no) use_filemon=no;;
75/*trace) filemon_h=no use_filemon="${withval}";;
76*/filemon.h) filemon_h="${withval}";;
77*/filemon*) filemon_h="${withval}/filemon.h";;
78*) AC_MSG_ERROR(bad value ${withval} given for filemon) ;;
79esac
80case "$use_filemon,$filemon_h" in
81,*.h) use_filemon=dev;;
82esac
83],
84[
85case "$OS" in
86NetBSD) filemon_h=no use_filemon=ktrace;;
87*)
88    for d in "/usr/include/dev/filemon" "$prefix/include/dev/filemon" "$srcdir/../../sys/dev/filemon"
89    do
90        for x in "/$OS" ""
91        do
92            filemon_h="$d$x/filemon.h"
93            test -s "$filemon_h" && break
94        done
95        test -s "$filemon_h" && { use_filemon=dev; break; }
96    done
97    ;;
98esac
99use_filemon=${use_filemon:-no}
100case "$use_filemon" in
101dev) ;;
102*) filemon_h=no;;
103esac
104])
105dnl echo "Note: use_meta=$use_meta use_filemon=$use_filemon filemon_h=$filemon_h" >&6
106case "$use_meta" in
107yes)
108	case "$use_filemon" in
109	no) ;;
110	*) echo "Using: filemon_${use_filemon}.c" >&6;;
111	esac
112	;;
113esac
114dnl
115dnl Check for OS problems
116dnl
117dnl Minix 3 at least has bugs in headers where _NETBSD_SOURCE
118dnl is needed for compilation
119case "$OS" in
120Minix)	CPPFLAGS="${CPPFLAGS} -D_NETBSD_SOURCE"
121	test -x /usr/pkg/bin/clang && CC=${CC:-clang}
122	;;
123SCO_SV)	# /bin/sh is not usable
124	ALT_DEF_SHELLS="/bin/lsh /usr/bin/bash /bin/ksh"
125	CPPFLAGS="${CPPFLAGS} -DFORCE_USE_SHELL"
126	;;
127esac
128dnl
129dnl Not everyone groks TZ=Europe/Berlin
130dnl which is used by the localtime tests
131echo $ECHO_N "checking whether system has timezone Europe/Berlin... $ECHO_C" >&6
132if test -f /usr/share/zoneinfo/Europe/Berlin; then
133	echo yes  >&6
134	# seems a safe bet
135	UTC_1=Europe/Berlin
136else
137	utcH=`TZ=UTC date +%H 2> /dev/null`
138	utc_1H=`TZ=UTC-1 date +%H 2> /dev/null`
139	if test ${utcH-0} -lt ${utc_1H-0}; then
140		UTC_1=UTC-1
141		echo no, using UTC-1 >&6
142	else
143		echo no >&6
144	fi
145fi
146dnl
147dnl Add some places to look for compilers
148oldPATH=$PATH
149for d in /usr/gnu/bin
150do
151	test -d $d || continue
152	PATH=$PATH:$d
153done
154export PATH
155dnl Solaris's signal.h only privides sigset_t etc if one of
156dnl _EXTENSIONS_ _POSIX_C_SOURCE or _XOPEN_SOURCE are defined.
157dnl The later two seem to cause more problems than they solve so if we
158dnl see _EXTENSIONS_ we use it.
159AC_USE_SYSTEM_EXTENSIONS
160dnl Checks for programs.
161AC_PROG_CC
162AC_PROG_INSTALL
163dnl Executable suffix - normally empty; .exe on os2.
164AC_SUBST(ac_exe_suffix)dnl
165dnl
166dnl Hurd refuses to define PATH_MAX or MAXPATHLEN
167if test -x /usr/bin/getconf; then
168   bmake_path_max=`getconf PATH_MAX / 2> /dev/null`
169   # only a numeric response is useful
170   test ${bmake_path_max:-0} -gt 0 2> /dev/null || bmake_path_max=
171fi
172bmake_path_max=${bmake_path_max:-1024}
173if test $bmake_path_max -gt 1024; then
174   # this is all we expect
175   bmake_path_max=1024
176fi
177echo "Using: BMAKE_PATH_MAX=$bmake_path_max" >&6
178AC_SUBST(bmake_path_max)dnl
179dnl
180dnl if type does not work which(1) had better!
181dnl note we cannot rely on type returning non-zero on failure
182if (type cat) > /dev/null 2>&1; then
183: which
184which() {
185	type "$@" | sed 's,[[()]],,g;s,^[[^/]][[^/]]*,,;q'
186}
187fi
188dnl if CC is somewhere that was not in PATH we need its full path
189dnl watch out for included flags!
190case "$CC" in
191/*) ;;
192*)
193    for x in $CC
194    do
195        _cc=`which $x`
196        break
197    done
198    if test -x ${_cc:-/dev/null}; then
199        _cc_dir=`dirname $_cc`
200        case ":$oldPATH:" in
201        *:$_cc_dir:*) ;;
202        *) CC=$_cc_dir/$CC;;
203        esac
204    fi
205    ;;
206esac
207dnl Checks for header files.
208AC_HEADER_SYS_WAIT
209AC_HEADER_DIRENT
210dnl Keep this list sorted
211AC_CHECK_HEADERS(sys/param.h)
212dnl On BSDi at least we really need sys/param.h for sys/sysctl.h
213AC_CHECK_HEADERS([sys/sysctl.h], [], [],
214[#ifdef HAVE_SYS_PARAM_H
215# include <sys/param.h>
216# endif
217])
218
219AC_CHECK_HEADERS( \
220	ar.h \
221	err.h \
222	fcntl.h \
223	libgen.h \
224	limits.h \
225	paths.h \
226	poll.h \
227	ranlib.h \
228	sys/mman.h \
229	sys/select.h \
230	sys/socket.h \
231	sys/time.h \
232	sys/uio.h \
233	utime.h \
234	)
235
236dnl Both *BSD and Linux have sys/cdefs.h, most do not.
237dnl If it is missing, we add -I${srcdir}/missing to CFLAGS
238AC_CHECK_HEADER(sys/cdefs.h,,
239CPPFLAGS="${CPPFLAGS} -I`cd ${srcdir}/missing && pwd`")
240
241dnl Checks for typedefs, structures, and compiler characteristics.
242AC_C___ATTRIBUTE__
243AC_C_BIGENDIAN
244AC_C_CONST
245AC_C_INLINE
246AC_TYPE_INT64_T
247AC_TYPE_LONG_LONG_INT
248AC_TYPE_MODE_T
249AC_TYPE_OFF_T
250AC_TYPE_PID_T
251AC_TYPE_SIZE_T
252AC_TYPE_UINT32_T
253AC_CHECK_DECLS([sys_siglist],[],[],[#include <signal.h>
254/* NetBSD declares sys_siglist in unistd.h.  */
255#ifdef HAVE_UNISTD_H
256# include <unistd.h>
257#endif
258])
259
260AC_CHECK_HEADERS_ONCE([sys/time.h])
261
262AC_STRUCT_TM
263
264dnl we need sig_atomic_t
265AH_TEMPLATE([sig_atomic_t],[type that signal handlers can safely frob])
266AC_CHECK_TYPES([sig_atomic_t],[],[],
267[
268#ifdef HAVE_SYS_TYPES_H
269#include <sys/types.h>
270#endif
271#include <signal.h>
272])
273
274dnl Checks for library functions.
275AC_FUNC_FORK
276AC_FUNC_VPRINTF
277AC_FUNC_WAIT3
278dnl Keep this list sorted
279AC_CHECK_FUNCS( \
280	err \
281	errx \
282	getcwd \
283	getenv \
284	getwd \
285	killpg \
286	mmap \
287	putenv \
288	select \
289	setenv \
290	setpgid \
291	setrlimit \
292	setsid \
293	sigaddset \
294	sigpending \
295	sigprocmask \
296	sigsetmask \
297	sigsuspend \
298	sigvec \
299	snprintf \
300	strerror \
301	stresep \
302	strftime \
303	strsep \
304	strtod \
305	strtol \
306	strtoll \
307	strtoul \
308	sysctl \
309	unsetenv \
310	vsnprintf \
311	wait3 \
312	wait4 \
313	waitpid \
314	warn \
315	warnx \
316	)
317
318dnl functions which we may need to provide
319AC_REPLACE_FUNCS( \
320	getopt \
321	realpath \
322	dirname \
323	sigaction \
324	stresep \
325	strlcpy \
326	)
327
328AC_CHECK_LIB([util], [emalloc],
329    [ AC_CHECK_LIB([util], [erealloc],
330      [ AC_CHECK_LIB([util], [estrdup],
331        [ AC_CHECK_LIB([util], [estrndup],
332	  [ LIBS="$LIBS -lutil"
333	    CPPFLAGS="$CPPFLAGS -DUSE_EMALLOC" ])])])])
334
335dnl
336dnl Structures
337dnl
338AC_HEADER_STAT
339dnl
340echo "checking if compiler supports __func__" >&6
341AC_LANG(C)
342AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[[const char *func = __func__;]])],,
343	AC_DEFINE(__func__, __FUNCTION__, C99 function name))
344dnl
345dnl we want this for unit-tests/Makefile
346dnl GNU diff is known to support -u
347if test -x /usr/gnu/bin/diff; then
348	diff=/usr/gnu/bin/diff
349	diff_u=-u
350else
351	diff=${diff:-diff}
352	echo $ECHO_N "checking if $diff -u works... $ECHO_C" >&6
353	if $diff -u /dev/null /dev/null > /dev/null 2>&1; then
354		diff_u=-u
355		echo yes >&6
356	else
357		diff_u=
358		echo no >&6
359	fi
360fi
361dnl
362dnl AC_* don't quite cut it.
363dnl
364echo "checking for MACHINE & MACHINE_ARCH..." >&6
365cat > conftest.$ac_ext <<EOF
366#include "confdefs.h"
367#include <sys/param.h>
368#ifdef MACHINE
369machine=MACHINE
370#endif
371#ifdef MACHINE_ARCH
372machine_arch=MACHINE_ARCH
373#endif
374EOF
375
376default_machine=`(eval "$ac_cpp conftest.$ac_ext") 2>&5 |
377	grep machine= | tr -d ' "'`
378rm -rf conftest*
379if test "$default_machine"; then
380	eval "$default_machine"
381fi
382machine=${machine:-`$srcdir/machine.sh`}
383machine_arch=${machine_arch:-`$srcdir/machine.sh arch`}
384echo "defaults: MACHINE=$machine, MACHINE_ARCH=$machine_arch" 1>&6
385dnl
386dnl now allow overrides
387dnl
388AC_ARG_WITH(machine,
389[  --with-machine=MACHINE  explicitly set MACHINE],
390[case "${withval}" in
391yes)   AC_MSG_ERROR(bad value ${withval} given for bmake MACHINE) ;;
392no)    ;;
393generic) machine=`$srcdir/machine.sh`;;
394*)     machine=$with_machine;;
395esac])
396force_machine=
397AC_ARG_WITH(force_machine,
398[  --with-force-machine=MACHINE  set FORCE_MACHINE],
399[case "${withval}" in
400yes)   force_machine=FORCE_;;
401no)    ;;
402*)     force_machine=FORCE_; machine=$with_force_machine;;
403esac])
404dnl
405force_machine_arch=
406AC_ARG_WITH(force_machine_arch,
407[  --with-force-machine-arch=MACHINE  set FORCE_MACHINE_ARCH],
408[case "${withval}" in
409yes)   force_machine_arch=FORCE_;;
410no)    ;;
411*)     force_machine_arch=FORCE_; machine_arch=$with_force_machine_arch;;
412esac])
413dnl
414AC_ARG_WITH(machine_arch,
415[  --with-machine_arch=MACHINE_ARCH  explicitly set MACHINE_ARCH],
416[case "${withval}" in
417yes)   AC_MSG_ERROR(bad value ${withval} given for bmake MACHINE_ARCH) ;;
418no)    ;;
419*)     machine_arch=$with_machine_arch;;
420esac])
421dnl
422dnl Tell them what we ended up with
423dnl
424echo "Using: ${force_machine}MACHINE=$machine, ${force_machine_arch}MACHINE_ARCH=$machine_arch" 1>&6
425dnl
426dnl Allow folk to control _PATH_DEFSYSPATH
427dnl
428default_sys_path=\${prefix}/share/mk
429AC_ARG_WITH(default-sys-path,
430[  --with-default-sys-path=PATH:DIR:LIST  use an explicit _PATH_DEFSYSPATH
431	MAKESYSPATH is a ':' separated list of directories
432	that bmake will search for system .mk files.
433	_PATH_DEFSYSPATH is its default value.],
434[case "${withval}" in
435yes)	AC_MSG_ERROR(bad value ${withval} given for bmake _PATH_DEFSYSPATH) ;;
436no)	;;
437*)	default_sys_path="$with_default_sys_path"
438	;;
439esac])
440dnl
441dnl Some folk don't like this one
442dnl
443AC_ARG_WITH(path-objdirprefix,
444[  --with-path-objdirprefix=PATH  override _PATH_OBJDIRPREFIX],
445[case "${withval}" in
446yes)   AC_MSG_ERROR(bad value ${withval} given for bmake _PATH_OBJDIRPREFIX) ;;
447no)    CPPFLAGS="$CPPFLAGS -DNO_PATH_OBJDIRPREFIX" ;;
448*)     CPPFLAGS="$CPPFLAGS \"-D_PATH_OBJDIRPREFIX=\\\"$with_path-objdir\\\"\"" ;;
449esac])
450dnl
451dnl And this can be handy to do with out.
452dnl
453AC_ARG_ENABLE(pwd-override,
454[  --disable-pwd-override  disable $PWD overriding getcwd()],
455[case "${enableval}" in
456yes)   ;;
457no)    CPPFLAGS="$CPPFLAGS -DNO_PWD_OVERRIDE" ;;
458*)     AC_MSG_ERROR(bad value ${enableval} given for pwd-override option) ;;
459esac])
460dnl
461dnl Just for grins
462dnl
463AC_ARG_ENABLE(check-make-chdir,
464[  --disable-check-make-chdir disable make trying to guess
465	when it should automatically cd ${.CURDIR}],
466[case "${enableval}" in
467yes)   ;;
468no)    CPPFLAGS="$CPPFLAGS -DNO_CHECK_MAKE_CHDIR" ;;
469*)     AC_MSG_ERROR(bad value ${enableval} given for check-make-chdir option) ;;
470esac])
471dnl
472dnl On non-BSD systems, bootstrap won't work without mk
473dnl
474AC_ARG_WITH(mksrc,
475[  --with-mksrc=PATH tell makefile.boot where to find mk src],
476[case "${withval}" in
477""|yes|no) ;;
478*) test -s $withval/install-mk && mksrc=$withval ||
479AC_MSG_ERROR(bad value ${withval} given for mksrc cannot find install-mk)
480;;
481esac
482])
483dnl
484dnl Now make sure we have a value
485dnl
486srcdir=`cd $srcdir && pwd`
487for mksrc in $mksrc $srcdir/mk $srcdir/../mk mk
488do
489	test -s $mksrc/install-mk || continue
490	mksrc=`cd $mksrc && pwd`
491	break
492done
493mksrc=`echo $mksrc | sed "s,$srcdir,\\\${srcdir},"`
494echo "Using: MKSRC=$mksrc" 1>&6
495dnl On some systems we want a different default shell by default
496for sh in /usr/xpg4/bin/sh $ALT_DEF_SHELLS
497do
498	test -x $sh || continue
499	use_defshell $sh
500	break
501done
502case "$defshell_path$DEFSHELL_INDEX" in
503"")	;;
504*DEFSHELL_INDEX_CUSTOM)
505	echo "Using: SHELL=$defshell_path"  >&6
506	AC_DEFINE_UNQUOTED(DEFSHELL_CUSTOM, "$defshell_path", Path of default shell)
507	;;
508/*INDEX*)
509	echo "Using: SHELL=$DEFSHELL_INDEX ($defshell_path)" | sed 's,DEFSHELL_INDEX_,,' >&6
510	AC_DEFINE_UNQUOTED(DEFSHELL_INDEX, $DEFSHELL_INDEX, Shell spec to use by default)
511AC_DEFINE_UNQUOTED(DEFSHELL_PATH, "$defshell_path", Path of default shell)
512	;;
513*)
514	echo "Using: SHELL=$DEFSHELL_INDEX" | sed 's,DEFSHELL_INDEX_,,' >&6
515	AC_DEFINE_UNQUOTED(DEFSHELL_INDEX, $DEFSHELL_INDEX, Shell spec to use by default)
516	;;
517esac
518dnl
519dnl Some systems have deprecated egrep in favor of grep -E
520case "`echo bmake | egrep 'a|b' 2>&1`" in
521bmake) egrep=egrep;;
522*) egrep='grep -E';;
523esac
524dnl
525AC_SUBST(egrep)
526AC_SUBST(machine)
527AC_SUBST(force_machine)
528AC_SUBST(machine_arch)
529AC_SUBST(force_machine_arch)
530AC_SUBST(mksrc)
531AC_SUBST(default_sys_path)
532AC_SUBST(INSTALL)
533AC_SUBST(GCC)
534AC_SUBST(diff)
535AC_SUBST(diff_u)
536AC_SUBST(use_meta)
537AC_SUBST(use_filemon)
538AC_SUBST(filemon_h)
539AC_SUBST(_MAKE_VERSION)
540AC_SUBST(UTC_1)
541bm_outfiles="Makefile.config unit-tests/Makefile.config make-bootstrap.sh"
542if test $use_makefile = yes; then
543   bm_outfiles="makefile $bm_outfiles"
544fi
545
546here=`'pwd'`
547: srcdir=$srcdir
548: here=  $here
549case "$here" in
550$srcdir/obj*) # make sure we put unit-tests/Makefile.config in the right place
551	obj=`basename $here`
552	mkdir -p $srcdir/unit-tests/$obj
553	test -d unit-tests || ln -s ../unit-tests/$obj unit-tests
554	;;
555esac
556
557AC_CONFIG_FILES([$bm_outfiles])
558AC_OUTPUT
559cat <<EOF
560
561You can now run
562
563	sh ./make-bootstrap.sh
564
565to produce a fully functional bmake.
566
567EOF
568