xref: /freebsd/contrib/bmake/configure.in (revision 6419bb52) 
1dnl
2dnl RCSid:
3dnl	$Id: configure.in,v 1.65 2020/05/25 01:11:40 sjg Exp $
4dnl
5dnl Process this file with autoconf to produce a configure script
6dnl
7AC_PREREQ(2.50)
8AC_INIT([bmake], [20200524], [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. $srcdir/VERSION
19OS=`uname -s`
20
21dnl
22AC_ARG_WITH(defshell,
23[  --with-defshell=SHELL  use SHELL by default - must be sh compatible, use sh or ksh to pick the internal definitions],
24[case "${withval}" in
25yes)   AC_MSG_ERROR(bad value ${withval} given for bmake DEFSHELL) ;;
26no)    ;;
27*)     case "$with_defshell" in
28       sh)  DEFSHELL_INDEX=DEFSHELL_INDEX_SH;;	# it's the default anyway
29       ksh) DEFSHELL_INDEX=DEFSHELL_INDEX_KSH;;
30       csh) DEFSHELL_INDEX=DEFSHELL_INDEX_CSH;;	# kidding right?
31       *)   defshell_path=$with_defshell;;	# better be sh compatible!
32       esac
33       ;;
34       esac])
35dnl
36case "$OS" in
37CYGWIN*|MINGW*) use_makefile=no;;
38*) use_makefile=yes;;
39esac
40AC_ARG_WITH(makefile,
41[ --without-makefile dissable use of generated makefile],
42[case "${withval}" in
43yes|no) use_makefile=${withval};;
44*) AC_MSG_ERROR(bad value ${withval} given for makefile) ;;
45esac])
46dnl
47use_meta=yes
48AC_ARG_WITH(meta,
49[ --without-meta dissable use of meta-mode],
50[case "${withval}" in
51yes|no) use_meta=${withval};;
52*) AC_MSG_ERROR(bad value ${withval} given for meta) ;;
53esac])
54dnl
55AC_ARG_WITH(filemon,
56[ --with-filemon={no,dev,ktrace,path/filemon.h} indicate filemon method for meta-mode. Path to filemon.h implies dev],
57[ case "/${withval}" in
58/no) use_filemon=no;;
59/*trace) filemon_h=no use_filemon="${withval}";;
60*/filemon.h) filemon_h="${withval}";;
61*/filemon*) filemon_h="${withval}/filemon.h";;
62*) AC_MSG_ERROR(bad value ${withval} given for filemon) ;;
63esac
64case "$use_filemon,$filemon_h" in
65,*.h) use_filemon=dev;;
66esac
67],
68[
69case "$OS" in
70NetBSD) filemon_h=no use_filemon=ktrace;;
71*)
72    for d in "/usr/include/dev/filemon" "$prefix/include/dev/filemon" "$srcdir/../../sys/dev/filemon"
73    do
74        for x in "/$OS" ""
75        do
76            filemon_h="$d$x/filemon.h"
77            test -s "$filemon_h" && break
78        done
79        test -s "$filemon_h" && { use_filemon=dev; break; }
80    done
81    ;;
82esac
83use_filemon=${use_filemon:-no}
84case "$use_filemon" in
85dev) ;;
86*) filemon_h=no;;
87esac
88])
89dnl echo "Note: use_meta=$use_meta use_filemon=$use_filemon filemon_h=$filemon_h" >&6
90case "$use_meta" in
91yes)
92	case "$use_filemon" in
93	no) ;;
94	*) echo "Using: filemon_${use_filemon}.c" >&6;;
95	esac
96	;;
97esac
98dnl
99dnl Check for OS problems
100dnl Solaris's signal.h only privides sigset_t etc if one of
101dnl _EXTENSIONS_ _POSIX_C_SOURCE or _XOPEN_SOURCE are defined.
102dnl The later two seem to cause more problems than they solve so if we
103dnl see _EXTENSIONS_ we use it.
104AC_USE_SYSTEM_EXTENSIONS
105dnl Checks for programs.
106AC_PROG_CC
107AC_PROG_CC_C99
108dnl AC_PROG_GCC_TRADITIONAL
109AC_PROG_INSTALL
110dnl Executable suffix - normally empty; .exe on os2.
111AC_SUBST(ac_exe_suffix)dnl
112dnl
113dnl Hurd refuses to define PATH_MAX or MAXPATHLEN
114if test -x /usr/bin/getconf; then
115   bmake_path_max=`getconf PATH_MAX / 2> /dev/null`
116   # only a numeric response is useful
117   test ${bmake_path_max:-0} -gt 0 2> /dev/null || bmake_path_max=
118fi
119bmake_path_max=${bmake_path_max:-1024}
120if test $bmake_path_max -gt 1024; then
121   # this is all we expect
122   bmake_path_max=1024
123fi
124echo "Using: BMAKE_PATH_MAX=$bmake_path_max" >&6
125AC_SUBST(bmake_path_max)dnl
126dnl
127dnl AC_C_CROSS
128dnl
129
130dnl Checks for header files.
131AC_HEADER_STDC
132AC_HEADER_SYS_WAIT
133AC_HEADER_DIRENT
134dnl Keep this list sorted
135AC_CHECK_HEADERS(sys/param.h)
136dnl On BSDi at least we really need sys/param.h for sys/sysctl.h
137AC_CHECK_HEADERS([sys/sysctl.h], [], [],
138[#ifdef HAVE_SYS_PARAM_H
139# include <sys/param.h>
140# endif
141])
142
143AC_CHECK_HEADERS( \
144	ar.h \
145	err.h \
146	fcntl.h \
147	libgen.h \
148	limits.h \
149	paths.h \
150	poll.h \
151	ranlib.h \
152	string.h \
153	sys/mman.h \
154	sys/select.h \
155	sys/socket.h \
156	sys/time.h \
157	sys/uio.h \
158	unistd.h \
159	utime.h \
160	)
161
162dnl Both *BSD and Linux have sys/cdefs.h, most do not.
163dnl If it is missing, we add -I${srcdir}/missing to CFLAGS
164dnl also if sys/cdefs.h does not have __RCSID we need to use ours
165dnl but we need to include the host's one too *sigh*
166AC_CHECK_HEADER(sys/cdefs.h,
167echo $ECHO_N "checking whether sys/cdefs.h is compatible... $ECHO_C" >&6
168AC_EGREP_CPP(yes,
169[#include <sys/cdefs.h>
170#ifdef __RCSID
171yes
172#endif
173],
174echo yes  >&6,
175echo no  >&6; CPPFLAGS="${CPPFLAGS} -I`cd ${srcdir}/missing && pwd` -DNEED_HOST_CDEFS_H"),
176CPPFLAGS="${CPPFLAGS} -I`cd ${srcdir}/missing && pwd`")
177
178dnl Checks for typedefs, structures, and compiler characteristics.
179AC_C___ATTRIBUTE__
180AC_C_BIGENDIAN
181AC_C_CONST
182AC_TYPE_MODE_T
183AC_TYPE_OFF_T
184AC_TYPE_PID_T
185AC_TYPE_SIZE_T
186AC_TYPE_UINT32_T
187AC_DECL_SYS_SIGLIST
188AC_HEADER_TIME
189AC_STRUCT_TM
190
191dnl Checks for library functions.
192AC_TYPE_SIGNAL
193AC_FUNC_VFORK
194AC_FUNC_VPRINTF
195AC_FUNC_WAIT3
196dnl Keep this list sorted
197AC_CHECK_FUNCS( \
198	err \
199	errx \
200	getcwd \
201	getenv \
202	getopt \
203	getwd \
204	killpg \
205	mmap \
206	putenv \
207	select \
208	setenv \
209	setpgid \
210	setsid \
211	sigaction \
212	sigvec \
213	snprintf \
214	strerror \
215	strftime \
216	strsep \
217	strtod \
218	strtol \
219	sysctl \
220	unsetenv \
221	vsnprintf \
222	wait3 \
223	wait4 \
224	waitpid \
225	warn \
226	warnx \
227	)
228
229dnl functions which we may need to provide
230AC_REPLACE_FUNCS( \
231	realpath \
232	dirname \
233	stresep \
234	strlcpy \
235	)
236
237AC_CHECK_LIB([util], [emalloc],
238    [ AC_CHECK_LIB([util], [erealloc],
239      [ AC_CHECK_LIB([util], [estrdup],
240        [ AC_CHECK_LIB([util], [estrndup],
241	  [ LIBS="$LIBS -lutil"
242	    CPPFLAGS="$CPPFLAGS -DUSE_EMALLOC" ])])])])
243
244dnl
245dnl Structures
246dnl
247AC_HEADER_STAT
248AC_STRUCT_ST_RDEV
249dnl
250echo "checking if compiler supports __func__" >&6
251AC_LANG(C)
252AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[[const char *func = __func__;]])],,
253	AC_DEFINE(__func__, __FUNCTION__, C99 function name))
254dnl
255dnl we want this for unit-tests/Makefile
256echo $ECHO_N "checking if diff -u works... $ECHO_C" >&6
257if diff -u /dev/null /dev/null > /dev/null 2>&1; then
258   diff_u=-u
259   echo yes >&6
260else
261   diff_u=
262   echo no >&6
263fi
264dnl
265dnl AC_* don't quite cut it.
266dnl
267echo "checking for MACHINE & MACHINE_ARCH..." >&6
268cat > conftest.$ac_ext <<EOF
269#include "confdefs.h"
270#include <sys/param.h>
271#ifdef MACHINE
272machine=MACHINE
273#endif
274#ifdef MACHINE_ARCH
275machine_arch=MACHINE_ARCH
276#endif
277EOF
278
279default_machine=`(eval "$ac_cpp conftest.$ac_ext") 2>&5 |
280	egrep machine= | tr -d ' "'`
281rm -rf conftest*
282if test "$default_machine"; then
283	eval "$default_machine"
284fi
285machine=${machine:-`$srcdir/machine.sh`}
286machine_arch=${machine_arch:-`$srcdir/machine.sh arch`}
287echo "defaults: MACHINE=$machine, MACHINE_ARCH=$machine_arch" 1>&6
288dnl
289dnl now allow overrides
290dnl
291AC_ARG_WITH(machine,
292[  --with-machine=MACHINE  explicitly set MACHINE],
293[case "${withval}" in
294yes)   AC_MSG_ERROR(bad value ${withval} given for bmake MACHINE) ;;
295no)    ;;
296generic) machine=`$srcdir/machine.sh`;;
297*)     machine=$with_machine;;
298esac])
299force_machine=
300AC_ARG_WITH(force_machine,
301[  --with-force-machine=MACHINE  set FORCE_MACHINE],
302[case "${withval}" in
303yes)   force_machine=FORCE_;;
304no)    ;;
305*)     force_machine=FORCE_; machine=$with_force_machine;;
306esac])
307dnl
308force_machine_arch=
309AC_ARG_WITH(force_machine_arch,
310[  --with-force-machine-arch=MACHINE  set FORCE_MACHINE_ARCH],
311[case "${withval}" in
312yes)   force_machine_arch=FORCE_;;
313no)    ;;
314*)     force_machine_arch=FORCE_; machine_arch=$with_force_machine;;
315esac])
316dnl
317AC_ARG_WITH(machine_arch,
318[  --with-machine_arch=MACHINE_ARCH  explicitly set MACHINE_ARCH],
319[case "${withval}" in
320yes)   AC_MSG_ERROR(bad value ${withval} given for bmake MACHINE_ARCH) ;;
321no)    ;;
322*)     machine_arch=$with_machine_arch;;
323esac])
324dnl
325dnl Tell them what we ended up with
326dnl
327echo "Using: ${force_machine}MACHINE=$machine, MACHINE_ARCH=$machine_arch" 1>&6
328dnl
329dnl Allow folk to control _PATH_DEFSYSPATH
330dnl
331default_sys_path=\${prefix}/share/mk
332AC_ARG_WITH(default-sys-path,
333[  --with-default-sys-path=PATH:DIR:LIST  use an explicit _PATH_DEFSYSPATH
334	MAKESYSPATH is a ':' separated list of directories
335	that bmake will search for system .mk files.
336	_PATH_DEFSYSPATH is its default value.],
337[case "${withval}" in
338yes)	AC_MSG_ERROR(bad value ${withval} given for bmake _PATH_DEFSYSPATH) ;;
339no)	;;
340*)	default_sys_path="$with_default_sys_path"
341	;;
342esac])
343dnl
344dnl Some folk don't like this one
345dnl
346AC_ARG_WITH(path-objdirprefix,
347[  --with-path-objdirprefix=PATH  override _PATH_OBJDIRPREFIX],
348[case "${withval}" in
349yes)   AC_MSG_ERROR(bad value ${withval} given for bmake _PATH_OBJDIRPREFIX) ;;
350no)    CPPFLAGS="$CPPFLAGS -DNO_PATH_OBJDIRPREFIX" ;;
351*)     CPPFLAGS="$CPPFLAGS \"-D_PATH_OBJDIRPREFIX=\\\"$with_path-objdir\\\"\"" ;;
352esac])
353dnl
354dnl And this can be handy to do with out.
355dnl
356AC_ARG_ENABLE(pwd-override,
357[  --disable-pwd-override  disable \$PWD overriding getcwd()],
358[case "${enableval}" in
359yes)   ;;
360no)    CPPFLAGS="$CPPFLAGS -DNO_PWD_OVERRIDE" ;;
361*)     AC_MSG_ERROR(bad value ${enableval} given for pwd-override option) ;;
362esac])
363dnl
364dnl Just for grins
365dnl
366AC_ARG_ENABLE(check-make-chdir,
367[  --disable-check-make-chdir disable make trying to guess
368	when it should automatically cd \${.CURDIR}],
369[case "${enableval}" in
370yes)   ;;
371no)    CPPFLAGS="$CPPFLAGS -DNO_CHECK_MAKE_CHDIR" ;;
372*)     AC_MSG_ERROR(bad value ${enableval} given for check-make-chdir option) ;;
373esac])
374dnl
375dnl On non-BSD systems, bootstrap won't work without mk
376dnl
377AC_ARG_WITH(mksrc,
378[  --with-mksrc=PATH tell makefile.boot where to find mk src],
379[case "${withval}" in
380""|yes|no) ;;
381*) test -s $withval/install-mk && mksrc=$withval ||
382AC_MSG_ERROR(bad value ${withval} given for mksrc cannot find install-mk)
383;;
384esac
385])
386dnl
387dnl Now make sure we have a value
388dnl
389srcdir=`cd $srcdir && pwd`
390for mksrc in $mksrc $srcdir/mk $srcdir/../mk mk
391do
392	test -s $mksrc/install-mk || continue
393	mksrc=`cd $mksrc && pwd`
394	break
395done
396mksrc=`echo $mksrc | sed "s,$srcdir,\\\${srcdir},"`
397echo "Using: MKSRC=$mksrc" 1>&6
398dnl On some systems we want a different default shell by default
399if test -x /usr/xpg4/bin/sh; then
400        defshell_path=${defshell_path:-/usr/xpg4/bin/sh}
401fi
402if test -n "$defshell_path"; then
403	echo "Using: SHELL=$defshell_path"  >&6
404	AC_DEFINE_UNQUOTED(DEFSHELL_CUSTOM, "$defshell_path", Path of default shell)
405fi
406if test -n "$DEFSHELL_INDEX"; then
407       AC_DEFINE_UNQUOTED(DEFSHELL_INDEX, $DEFSHELL_INDEX, Shell spec to use by default)
408fi
409dnl
410AC_SUBST(machine)
411AC_SUBST(force_machine)
412AC_SUBST(machine_arch)
413AC_SUBST(mksrc)
414AC_SUBST(default_sys_path)
415AC_SUBST(INSTALL)
416AC_SUBST(GCC)
417AC_SUBST(diff_u)
418AC_SUBST(use_meta)
419AC_SUBST(use_filemon)
420AC_SUBST(filemon_h)
421AC_SUBST(_MAKE_VERSION)
422bm_outfiles="Makefile.config unit-tests/Makefile.config make-bootstrap.sh"
423if test $use_makefile = yes; then
424   bm_outfiles="makefile $bm_outfiles"
425fi
426AC_OUTPUT($bm_outfiles)
427cat <<EOF
428
429You can now run
430
431	sh ./make-bootstrap.sh
432
433to produce a fully functional bmake.
434
435EOF
436