xref: /freebsd/contrib/bmake/configure.in (revision 06c3fb27) 
1dnl
2dnl RCSid:
3dnl	$Id: configure.in,v 1.97 2023/07/25 20:12:32 sjg Exp $
4dnl
5dnl Process this file with autoconf to produce a configure script
6dnl
7AC_PREREQ([2.71])
8AC_INIT([bmake],[20230723],[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|*/bsh)
33		DEFSHELL_INDEX=DEFSHELL_INDEX_SH;;
34	*=*)	# eg. sh=/bin/bsh
35		eval `IFS="="; set -- $1; echo name=$1 defshell_path=$2`
36		case "$name" in
37		csh) DEFSHELL_INDEX=DEFSHELL_INDEX_CSH;;
38		ksh) DEFSHELL_INDEX=DEFSHELL_INDEX_KSH;;
39		sh) DEFSHELL_INDEX=DEFSHELL_INDEX_SH;;
40		*) DEFSHELL_INDEX=DEFSHELL_INDEX_CUSTOM;;
41		esac
42		;;
43	*)	DEFSHELL_INDEX=DEFSHELL_INDEX_CUSTOM
44		defshell_path=$1
45		;;
46	esac
47	case "$defshell_path,$1" in
48	,/bin/*) ;;
49	,*/*) defshell_path=$1;;
50	esac
51}
52dnl
53AC_ARG_WITH(defshell,
54[  --with-defshell=[[name=]]SHELL	use SHELL by default
55	optional 'name' can be 'sh' to indicate SHELL is sh compatible
56	eg. --with-defshell=sh=/bin/bsh
57	use just 'sh' or 'ksh' to pick the internal definitions],
58[case "${withval}" in
59yes)   AC_MSG_ERROR(bad value ${withval} given for bmake DEFSHELL) ;;
60no)    ;;
61*)     use_defshell $with_defshell;;
62esac])
63dnl
64case "$OS" in
65CYGWIN*|MINGW*) use_makefile=no;;
66*) use_makefile=yes;;
67esac
68AC_ARG_WITH(makefile,
69[  --without-makefile disable use of generated makefile],
70[case "${withval}" in
71yes|no) use_makefile=${withval};;
72*) AC_MSG_ERROR(bad value ${withval} given for makefile) ;;
73esac])
74dnl
75use_meta=yes
76AC_ARG_WITH(meta,
77[  --without-meta disable use of meta-mode],
78[case "${withval}" in
79yes|no) use_meta=${withval};;
80*) AC_MSG_ERROR(bad value ${withval} given for meta) ;;
81esac])
82dnl
83AC_ARG_WITH(filemon,
84[  --with-filemon={no,dev,ktrace,path/filemon.h} indicate filemon method for meta-mode. Path to filemon.h implies dev],
85[ case "/${withval}" in
86/no) use_filemon=no;;
87/*trace) filemon_h=no use_filemon="${withval}";;
88*/filemon.h) filemon_h="${withval}";;
89*/filemon*) filemon_h="${withval}/filemon.h";;
90*) AC_MSG_ERROR(bad value ${withval} given for filemon) ;;
91esac
92case "$use_filemon,$filemon_h" in
93,*.h) use_filemon=dev;;
94esac
95],
96[
97case "$OS" in
98NetBSD) filemon_h=no use_filemon=ktrace;;
99*)
100    for d in "/usr/include/dev/filemon" "$prefix/include/dev/filemon" "$srcdir/../../sys/dev/filemon"
101    do
102        for x in "/$OS" ""
103        do
104            filemon_h="$d$x/filemon.h"
105            test -s "$filemon_h" && break
106        done
107        test -s "$filemon_h" && { use_filemon=dev; break; }
108    done
109    ;;
110esac
111use_filemon=${use_filemon:-no}
112case "$use_filemon" in
113dev) ;;
114*) filemon_h=no;;
115esac
116])
117dnl echo "Note: use_meta=$use_meta use_filemon=$use_filemon filemon_h=$filemon_h" >&6
118case "$use_meta" in
119yes)
120	case "$use_filemon" in
121	no) ;;
122	*) echo "Using: filemon_${use_filemon}.c" >&6;;
123	esac
124	;;
125esac
126dnl
127dnl Check for OS problems
128dnl
129dnl Minix 3 at least has bugs in headers where _NETBSD_SOURCE
130dnl is needed for compilation
131case "$OS" in
132Minix)	CPPFLAGS="${CPPFLAGS} -D_NETBSD_SOURCE"
133	test -x /usr/pkg/bin/clang && CC=${CC:-clang}
134	;;
135SCO_SV)	# /bin/sh is not usable
136	ALT_DEF_SHELLS="/bin/lsh /usr/bin/bash /bin/ksh"
137	CPPFLAGS="${CPPFLAGS} -DFORCE_USE_SHELL"
138	;;
139esac
140dnl
141# Not everyone groks TZ=Europe/Berlin
142# which is used by the localtime tests
143echo $ECHO_N "checking whether system has timezone Europe/Berlin... $ECHO_C" >&6
144eval `TZ=UTC date '+utc_H=%H utc_d=%d' 2> /dev/null`
145eval `TZ=Europe/Berlin date '+utc1_H=%H utc1_d=%d' 2> /dev/null`
146if test ${utc_d-0} -lt ${utc1_d-0} -o ${utc_H-0} -lt ${utc1_H-0}; then
147	echo yes  >&6
148	UTC_1=Europe/Berlin
149else
150	eval `TZ=UTC-1 date '+utc1_H=%H utc1_d=%d' 2> /dev/null`
151	if test ${utc_d-0} -lt ${utc1_d-0} -o ${utc_H-0} -lt ${utc1_H-0}; then
152		UTC_1=UTC-1
153		echo no, using UTC-1 >&6
154	fi
155fi
156test "x$UTC_1" = x && echo no >&6
157dnl
158dnl Add some places to look for compilers
159oldPATH=$PATH
160for d in /usr/gnu/bin
161do
162	test -d $d || continue
163	PATH=$PATH:$d
164done
165export PATH
166dnl Solaris's signal.h only privides sigset_t etc if one of
167dnl _EXTENSIONS_ _POSIX_C_SOURCE or _XOPEN_SOURCE are defined.
168dnl The later two seem to cause more problems than they solve so if we
169dnl see _EXTENSIONS_ we use it.
170AC_USE_SYSTEM_EXTENSIONS
171dnl Checks for programs.
172AC_PROG_CC
173AC_PROG_INSTALL
174# We have to override that on some systems
175case "$OS" in
176IRIX*) ac_INSTALL=$srcdir/install-sh;;
177esac
178dnl Executable suffix - normally empty; .exe on os2.
179AC_SUBST(ac_exe_suffix)dnl
180dnl
181dnl Hurd refuses to define PATH_MAX or MAXPATHLEN
182if test -x /usr/bin/getconf; then
183   bmake_path_max=`getconf PATH_MAX / 2> /dev/null`
184   # only a numeric response is useful
185   test ${bmake_path_max:-0} -gt 0 2> /dev/null || bmake_path_max=
186fi
187bmake_path_max=${bmake_path_max:-1024}
188if test $bmake_path_max -gt 1024; then
189   # this is all we expect
190   bmake_path_max=1024
191fi
192echo "Using: BMAKE_PATH_MAX=$bmake_path_max" >&6
193AC_SUBST(bmake_path_max)dnl
194dnl
195# if type does not work which(1) had better!
196# note we cannot rely on type returning non-zero on failure
197if (type cat) > /dev/null 2>&1; then
198: which
199which() {
200	type "$@" | sed 's,[[()]],,g;s,^[[^/]][[^/]]*,,;q'
201}
202fi
203dnl if CC is somewhere that was not in PATH we need its full path
204dnl watch out for included flags!
205case "$CC" in
206/*) ;;
207*)
208    for x in $CC
209    do
210        _cc=`which $x`
211        break
212    done
213    if test -x ${_cc:-/dev/null}; then
214        _cc_dir=`dirname $_cc`
215        case ":$oldPATH:" in
216        *:$_cc_dir:*) ;;
217        *) CC=$_cc_dir/$CC;;
218        esac
219    fi
220    ;;
221esac
222dnl Checks for header files.
223AC_HEADER_SYS_WAIT
224AC_HEADER_DIRENT
225dnl Keep this list sorted
226AC_CHECK_HEADERS(sys/param.h)
227dnl On BSDi at least we really need sys/param.h for sys/sysctl.h
228AC_CHECK_HEADERS([sys/sysctl.h], [], [],
229[#ifdef HAVE_SYS_PARAM_H
230# include <sys/param.h>
231# endif
232])
233
234AC_CHECK_HEADERS( \
235	ar.h \
236	err.h \
237	fcntl.h \
238	libgen.h \
239	limits.h \
240	paths.h \
241	poll.h \
242	ranlib.h \
243	sys/mman.h \
244	sys/select.h \
245	sys/socket.h \
246	sys/time.h \
247	sys/uio.h \
248	utime.h \
249	)
250
251dnl Both *BSD and Linux have sys/cdefs.h, most do not.
252dnl If it is missing, we add -I${srcdir}/missing to CFLAGS
253AC_CHECK_HEADER(sys/cdefs.h,,
254CPPFLAGS="${CPPFLAGS} -I`cd ${srcdir}/missing && pwd`")
255
256dnl Checks for typedefs, structures, and compiler characteristics.
257AC_C___ATTRIBUTE__
258AC_C_BIGENDIAN
259AC_C_CONST
260AC_C_INLINE
261AC_TYPE_INT64_T
262AC_TYPE_LONG_LONG_INT
263AC_TYPE_MODE_T
264AC_TYPE_OFF_T
265AC_TYPE_PID_T
266AC_TYPE_SIZE_T
267AC_TYPE_UINT32_T
268AC_CHECK_DECLS([sys_siglist],[],[],[#include <signal.h>
269/* NetBSD declares sys_siglist in unistd.h.  */
270#ifdef HAVE_UNISTD_H
271# include <unistd.h>
272#endif
273])
274
275AC_CHECK_HEADERS_ONCE([sys/time.h])
276
277AC_STRUCT_TM
278
279dnl we need sig_atomic_t
280AH_TEMPLATE([sig_atomic_t],[type that signal handlers can safely frob])
281AC_CHECK_TYPES([sig_atomic_t],[],[],
282[
283#ifdef HAVE_SYS_TYPES_H
284#include <sys/types.h>
285#endif
286#include <signal.h>
287])
288
289dnl Checks for library functions.
290AC_FUNC_FORK
291AC_FUNC_VPRINTF
292AC_FUNC_WAIT3
293dnl Keep this list sorted
294AC_CHECK_FUNCS( \
295	err \
296	errx \
297	getcwd \
298	getenv \
299	getwd \
300	killpg \
301	mmap \
302	putenv \
303	select \
304	setenv \
305	setpgid \
306	setrlimit \
307	setsid \
308	sigaddset \
309	sigpending \
310	sigprocmask \
311	sigsetmask \
312	sigsuspend \
313	sigvec \
314	snprintf \
315	strerror \
316	stresep \
317	strftime \
318	strsep \
319	strtod \
320	strtol \
321	strtoll \
322	strtoul \
323	sysctl \
324	unsetenv \
325	vsnprintf \
326	wait3 \
327	wait4 \
328	waitpid \
329	warn \
330	warnx \
331	)
332
333dnl functions which we may need to provide
334AC_REPLACE_FUNCS( \
335	getopt \
336	realpath \
337	dirname \
338	sigaction \
339	stresep \
340	strlcpy \
341	)
342
343AC_CHECK_LIB([util], [emalloc],
344    [ AC_CHECK_LIB([util], [erealloc],
345      [ AC_CHECK_LIB([util], [estrdup],
346        [ AC_CHECK_LIB([util], [estrndup],
347	  [ LIBS="$LIBS -lutil"
348	    CPPFLAGS="$CPPFLAGS -DUSE_EMALLOC" ])])])])
349
350dnl
351dnl Structures
352dnl
353AC_HEADER_STAT
354dnl
355echo "checking if compiler supports __func__" >&6
356AC_LANG(C)
357AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[[const char *func = __func__;]])],,
358	AC_DEFINE(__func__, __FUNCTION__, C99 function name))
359dnl
360dnl we want this for unit-tests/Makefile
361dnl GNU diff is known to support -u
362if test -x /usr/gnu/bin/diff; then
363	diff=/usr/gnu/bin/diff
364	diff_u=-u
365else
366	diff=${diff:-diff}
367	echo $ECHO_N "checking if $diff -u works... $ECHO_C" >&6
368	if $diff -u /dev/null /dev/null > /dev/null 2>&1; then
369		diff_u=-u
370		echo yes >&6
371	else
372		diff_u=
373		echo no >&6
374	fi
375fi
376dnl
377dnl AC_* don't quite cut it.
378dnl
379echo "checking for MACHINE & MACHINE_ARCH..." >&6
380cat > conftest.$ac_ext <<EOF
381#include "confdefs.h"
382#include <sys/param.h>
383#ifdef MACHINE
384machine=MACHINE
385#endif
386#ifdef MACHINE_ARCH
387machine_arch=MACHINE_ARCH
388#endif
389EOF
390
391default_machine=`(eval "$ac_cpp conftest.$ac_ext") 2>&5 |
392	grep machine= | tr -d ' "'`
393rm -rf conftest*
394if test "$default_machine"; then
395	eval "$default_machine"
396fi
397machine=${machine:-`$srcdir/machine.sh`}
398machine_arch=${machine_arch:-`$srcdir/machine.sh arch`}
399echo "defaults: MACHINE=$machine, MACHINE_ARCH=$machine_arch" 1>&6
400dnl
401dnl now allow overrides
402dnl
403AC_ARG_WITH(machine,
404[  --with-machine=MACHINE  explicitly set MACHINE],
405[case "${withval}" in
406yes)   AC_MSG_ERROR(bad value ${withval} given for bmake MACHINE) ;;
407no)    ;;
408generic) machine=`$srcdir/machine.sh`;;
409*)     machine=$with_machine;;
410esac])
411force_machine=
412AC_ARG_WITH(force_machine,
413[  --with-force-machine=MACHINE  set FORCE_MACHINE],
414[case "${withval}" in
415yes)   force_machine=FORCE_;;
416no)    ;;
417*)     force_machine=FORCE_; machine=$with_force_machine;;
418esac])
419dnl
420force_machine_arch=
421AC_ARG_WITH(force_machine_arch,
422[  --with-force-machine-arch=MACHINE  set FORCE_MACHINE_ARCH],
423[case "${withval}" in
424yes)   force_machine_arch=FORCE_;;
425no)    ;;
426*)     force_machine_arch=FORCE_; machine_arch=$with_force_machine_arch;;
427esac])
428dnl
429AC_ARG_WITH(machine_arch,
430[  --with-machine_arch=MACHINE_ARCH  explicitly set MACHINE_ARCH],
431[case "${withval}" in
432yes)   AC_MSG_ERROR(bad value ${withval} given for bmake MACHINE_ARCH) ;;
433no)    ;;
434*)     machine_arch=$with_machine_arch;;
435esac])
436dnl
437dnl Tell them what we ended up with
438dnl
439echo "Using: ${force_machine}MACHINE=$machine, ${force_machine_arch}MACHINE_ARCH=$machine_arch" 1>&6
440dnl
441dnl Allow folk to control _PATH_DEFSYSPATH
442dnl
443default_sys_path=\${prefix}/share/mk
444AC_ARG_WITH(default-sys-path,
445[  --with-default-sys-path=PATH:DIR:LIST  use an explicit _PATH_DEFSYSPATH
446	MAKESYSPATH is a ':' separated list of directories
447	that bmake will search for system .mk files.
448	_PATH_DEFSYSPATH is its default value.],
449[case "${withval}" in
450yes)	AC_MSG_ERROR(bad value ${withval} given for bmake _PATH_DEFSYSPATH) ;;
451no)	;;
452*)	default_sys_path="$with_default_sys_path"
453	;;
454esac])
455dnl
456dnl Some folk don't like this one
457dnl
458AC_ARG_WITH(path-objdirprefix,
459[  --with-path-objdirprefix=PATH  override _PATH_OBJDIRPREFIX],
460[case "${withval}" in
461yes)   AC_MSG_ERROR(bad value ${withval} given for bmake _PATH_OBJDIRPREFIX) ;;
462no)    CPPFLAGS="$CPPFLAGS -DNO_PATH_OBJDIRPREFIX" ;;
463*)     CPPFLAGS="$CPPFLAGS \"-D_PATH_OBJDIRPREFIX=\\\"$with_path-objdir\\\"\"" ;;
464esac])
465dnl
466dnl And this can be handy to do with out.
467dnl
468AC_ARG_ENABLE(pwd-override,
469[  --disable-pwd-override  disable $PWD overriding getcwd()],
470[case "${enableval}" in
471yes)   ;;
472no)    CPPFLAGS="$CPPFLAGS -DNO_PWD_OVERRIDE" ;;
473*)     AC_MSG_ERROR(bad value ${enableval} given for pwd-override option) ;;
474esac])
475dnl
476dnl Just for grins
477dnl
478AC_ARG_ENABLE(check-make-chdir,
479[  --disable-check-make-chdir disable make trying to guess
480	when it should automatically cd ${.CURDIR}],
481[case "${enableval}" in
482yes)   ;;
483no)    CPPFLAGS="$CPPFLAGS -DNO_CHECK_MAKE_CHDIR" ;;
484*)     AC_MSG_ERROR(bad value ${enableval} given for check-make-chdir option) ;;
485esac])
486dnl
487dnl On non-BSD systems, bootstrap won't work without mk
488dnl
489AC_ARG_WITH(mksrc,
490[  --with-mksrc=PATH tell makefile.boot where to find mk src],
491[case "${withval}" in
492""|yes|no) ;;
493*) test -s $withval/install-mk && mksrc=$withval ||
494AC_MSG_ERROR(bad value ${withval} given for mksrc cannot find install-mk)
495;;
496esac
497])
498dnl
499dnl Now make sure we have a value
500dnl
501srcdir=`cd $srcdir && pwd`
502for mksrc in $mksrc $srcdir/mk $srcdir/../mk mk
503do
504	test -s $mksrc/install-mk || continue
505	mksrc=`cd $mksrc && pwd`
506	break
507done
508mksrc=`echo $mksrc | sed "s,$srcdir,\\\${srcdir},"`
509echo "Using: MKSRC=$mksrc" 1>&6
510dnl On some systems we want a different default shell by default
511for sh in /usr/xpg4/bin/sh $ALT_DEF_SHELLS
512do
513	test -x $sh || continue
514	use_defshell $sh
515	break
516done
517case "$defshell_path$DEFSHELL_INDEX" in
518"")	;;
519*DEFSHELL_INDEX_CUSTOM)
520	echo "Using: SHELL=$defshell_path"  >&6
521	AC_DEFINE_UNQUOTED(DEFSHELL_CUSTOM, "$defshell_path", Path of default shell)
522	;;
523/*INDEX*)
524	echo "Using: SHELL=$DEFSHELL_INDEX ($defshell_path)" | sed 's,DEFSHELL_INDEX_,,' >&6
525	AC_DEFINE_UNQUOTED(DEFSHELL_INDEX, $DEFSHELL_INDEX, Shell spec to use by default)
526AC_DEFINE_UNQUOTED(DEFSHELL_PATH, "$defshell_path", Path of default shell)
527	;;
528*)
529	echo "Using: SHELL=$DEFSHELL_INDEX" | sed 's,DEFSHELL_INDEX_,,' >&6
530	AC_DEFINE_UNQUOTED(DEFSHELL_INDEX, $DEFSHELL_INDEX, Shell spec to use by default)
531	;;
532esac
533dnl
534dnl Some systems have deprecated egrep in favor of grep -E
535case "`echo bmake | egrep 'a|b' 2>&1`" in
536bmake) egrep=egrep;;
537*) egrep='grep -E';;
538esac
539dnl
540AC_SUBST(egrep)
541AC_SUBST(machine)
542AC_SUBST(force_machine)
543AC_SUBST(machine_arch)
544AC_SUBST(force_machine_arch)
545AC_SUBST(mksrc)
546AC_SUBST(default_sys_path)
547AC_SUBST(INSTALL)
548AC_SUBST(GCC)
549AC_SUBST(diff)
550AC_SUBST(diff_u)
551AC_SUBST(use_meta)
552AC_SUBST(use_filemon)
553AC_SUBST(filemon_h)
554AC_SUBST(_MAKE_VERSION)
555AC_SUBST(UTC_1)
556bm_outfiles="Makefile.config unit-tests/Makefile.config make-bootstrap.sh"
557if test $use_makefile = yes; then
558   bm_outfiles="makefile $bm_outfiles"
559fi
560
561here=`'pwd'`
562: srcdir=$srcdir
563: here=  $here
564case "$here" in
565$srcdir/obj*) # make sure we put unit-tests/Makefile.config in the right place
566	obj=`basename $here`
567	mkdir -p $srcdir/unit-tests/$obj
568	test -d unit-tests || ln -s ../unit-tests/$obj unit-tests
569	;;
570esac
571
572AC_CONFIG_FILES([$bm_outfiles])
573AC_OUTPUT
574cat <<EOF
575
576You can now run
577
578	sh ./make-bootstrap.sh
579
580to produce a fully functional bmake.
581
582EOF
583