1 # Process this file with autoconf to produce a configure script.
2 
3 AC_PREREQ([2.69])
4 AC_INIT([got-portable],
5 	m4_esyscmd([util/got-portable-ver.sh]),
6 	[thomas@xteddy.org])
7 AC_CONFIG_AUX_DIR(etc)
8 AC_CONFIG_SRCDIR([lib/rcsutil.h])
9 AM_INIT_AUTOMAKE([foreign subdir-objects])
10 
11 GOT_RELEASE=No
12 
13 AC_DEFINE_UNQUOTED(VERSION, "$VERSION")
14 AC_SUBST(VERSION)
15 AC_SUBST(GOT_RELEASE)
16 
17 AC_CANONICAL_HOST
18 
19 # When CFLAGS isn't set at this stage and gcc is detected by the macro below,
20 # autoconf will automatically use CFLAGS="-O2 -g". Prevent that by using an
21 # empty default.
22 : ${CFLAGS=""}
23 
24 # Save user CPPFLAGS, CFLAGS and LDFLAGS. We need to change them because
25 # AC_CHECK_HEADER doesn't give us any other way to update the include
26 # paths. But for Makefile.am we want to use AM_CPPFLAGS and friends.
27 SAVED_CFLAGS="$CFLAGS"
28 SAVED_CPPFLAGS="$CPPFLAGS"
29 SAVED_LDFLAGS="$LDFLAGS"
30 
31 # Checks for programs.
32 AC_PROG_CC
33 AC_PROG_CPP
34 AC_PROG_INSTALL
35 AC_PROG_LN_S
36 AC_PROG_MAKE_SET
37 AC_PROG_YACC
38 AC_PROG_RANLIB
39 PKG_PROG_PKG_CONFIG
40 AC_USE_SYSTEM_EXTENSIONS
41 
42 # Checks for header files.
43 AC_CHECK_HEADERS([ \
44 	fcntl.h \
45 	langinfo.h \
46 	limits.h \
47 	linux/landlock.h \
48 	locale.h \
49 	netdb.h \
50 	netinet/in.h \
51 	paths.h \
52 	poll.h \
53 	stddef.h \
54 	stdint.h \
55 	stdlib.h \
56 	string.h \
57 	sys/ioctl.h \
58 	sys/param.h \
59 	sys/poll.h \
60 	sys/queue.h \
61 	sys/socket.h \
62 	sys/time.h \
63 	sys/tree.h \
64 	util.h \
65 	unistd.h \
66 	wchar.h \
67 ])
68 
69 # Checks for typ edefs, structures, and compiler characteristics.
70 AC_CHECK_HEADER_STDBOOL
71 AC_C_INLINE
72 AC_TYPE_INT64_T
73 AC_TYPE_MODE_T
74 AC_TYPE_OFF_T
75 AC_TYPE_PID_T
76 AC_TYPE_SIZE_T
77 AC_TYPE_SSIZE_T
78 AC_TYPE_UINT16_T
79 AC_TYPE_UINT32_T
80 AC_TYPE_UINT64_T
81 AC_TYPE_UINT8_T
82 
83 # Check for ifgroupreq which is only available on BSD.
84 AC_CHECK_TYPES([struct ifgroupreq])
85 
86 # Look for library needed for flock.
87 AC_SEARCH_LIBS(flock, bsd)
88 
89 # Checks for library functions.
90 AC_FUNC_FORK
91 AC_FUNC_FSEEKO
92 AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
93 AC_FUNC_MALLOC
94 AC_FUNC_MMAP
95 AC_FUNC_REALLOC
96 AC_FUNC_STRERROR_R
97 AC_FUNC_STRNLEN
98 AC_CHECK_FUNCS([ \
99 	dup2 \
100 	flock \
101 	getcwd \
102 	localtime_r \
103 	memchr \
104 	memmove \
105 	memset \
106 	mkdir \
107 	munmap \
108 	nl_langinfo \
109 	realpath \
110 	regcomp \
111 	rmdir \
112 	setlocale \
113 	socket \
114 	setresgid \
115 	setresuid \
116 	setproctitle \
117 	strcasecmp \
118 	strchr \
119 	strcspn \
120 	strdup \
121 	strerror \
122 	strlcpy \
123 	strncasecmp \
124 	strndup \
125 	strrchr \
126 	strspn \
127 	strstr \
128 	strtol \
129 	strtoul \
130 	wcwidth \
131 ])
132 
133 AM_CONDITIONAL([HAVE_SETPROCTITLE], [test "x$ac_cv_func_setproctitle" = xyes])
134 AM_CONDITIONAL([HAVE_SETRESGID], [test "x$ac_cv_func_setresgid" = xyes])
135 AM_CONDITIONAL([HAVE_SETRESUID], [test "x$ac_cv_func_setresuid" = xyes])
136 
137 # Siphash support.
138 AC_CHECK_FUNCS([SipHash])
139 AM_CONDITIONAL([HAVE_SIPHASH], [test "x$ac_cv_func_SipHash" = xyes])
140 
141 # Check for functions with a compatibility implementation.
142 AC_REPLACE_FUNCS([ \
143 	asprintf \
144 	closefrom \
145 	explicit_bzero \
146 	fmt_scaled \
147 	freezero \
148 	getdtablecount \
149 	getline \
150 	getprogname \
151 	recallocarray \
152 	reallocarray \
153 	strlcat \
154 	strlcpy \
155 	strndup \
156 	strsep \
157 	strtonum \
158 ])
159 
160 # Always use our getopt because 1) glibc's doesn't enforce argument order 2)
161 # musl does not set optarg to NULL for flags without arguments (although it is
162 # not required to, but it is helpful) 3) there are probably other weird
163 # implementations.
164 AC_LIBOBJ(getopt)
165 
166 # Check the platform we're compiling on.
167 AC_MSG_CHECKING(platform)
168 case "$host_os" in
169 	*linux*)
170 		AC_MSG_RESULT(linux)
171 		PLATFORM=linux
172 		;;
173 	*freebsd*)
174 		AC_MSG_RESULT(freebsd)
175 		PLATFORM=freebsd
176 		;;
177 	*darwin*)
178 		AC_MSG_RESULT(darwin)
179 		PLATFORM=darwin
180 		;;
181 	*netbsd*)
182 		AC_MSG_RESULT(netbsd)
183 		PLATFORM=netbsd
184 		;;
185 	*dragonfly*)
186 		AC_MSG_RESULT(dragonfly)
187 		PLATFORM=dragonflybsd
188 		;;
189 	*)
190 		AC_MSG_RESULT(unknown)
191 		PLATFORM=unknown
192 		;;
193 esac
194 AC_SUBST(PLATFORM)
195 AM_CONDITIONAL([HOST_FREEBSD], [test "$PLATFORM" = "freebsd"])
196 AM_CONDITIONAL([HOST_LINUX], [test "$PLATFORM" = "linux"])
197 AM_CONDITIONAL([HOST_DARWIN], [test "$PLATFORM" = "darwin"])
198 AM_CONDITIONAL([HOST_NETBSD], [test "$PLATFORM" = "netbsd"])
199 AM_CONDITIONAL([HOST_DRAGONFLYBSD], [test "$PLATFORM" = "dragonflybsd"])
200 
201 if test x"$PLATFORM" = "xdarwin"; then
202 	if ! test -x "/usr/local/opt/bison/bin/bison"; then
203 		AC_MSG_ERROR("GNU Bison not found")
204 	fi
205 
206 	# Override YACC here to point to the GNU version of bison.
207 	export YACC="/usr/local/opt/bison/bin/bison -y"
208 	export LDFLAGS="-L/usr/local/opt/ncurses/lib -L/usr/local/opt/openssl@3/lib $LDFLAGS"
209 	export CPPFLAGS="-I/usr/local/opt/ncurses/include -I/usr/local/opt/openssl@3/include $CPPFLAGS"
210 	export PKG_CONFIG_PATH="/usr/local/opt/ncurses/lib/pkgconfig"
211 	export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/usr/local/opt/openssl@3/lib/pkgconfig"
212 fi
213 
214 # Landlock detection.
215 AC_MSG_CHECKING([for landlock])
216 AM_CONDITIONAL([HAVE_LINUX_LANDLOCK],
217     [test "x$ac_cv_header_linux_landlock_h" = "xyes"])
218 if test "x$ac_cv_header_linux_landlock_h" = "xyes"; then
219 	AC_MSG_RESULT(yes)
220 else
221 	AC_MSG_RESULT(no)
222 fi
223 
224 # Clang sanitizers wrap reallocarray even if it isn't available on the target
225 # system. When compiled it always returns NULL and crashes the program. To
226 # detect this we need a more complicated test.
227 AC_MSG_CHECKING([for working reallocarray])
228 AC_RUN_IFELSE([AC_LANG_PROGRAM(
229 		[#include <stdlib.h>],
230 		[return (reallocarray(NULL, 1, 1) == NULL);]
231 	)],
232 	AC_MSG_RESULT(yes),
233 	[AC_LIBOBJ(reallocarray) AC_MSG_RESULT([no])],
234 	[AC_LIBOBJ(reallocarray) AC_MSG_RESULT([no])]
235 )
236 AC_MSG_CHECKING([for working recallocarray])
237 AC_RUN_IFELSE([AC_LANG_PROGRAM(
238 		[#include <stdlib.h>],
239 		[return (recallocarray(NULL, 1, 1, 1) == NULL);]
240 	)],
241 	AC_MSG_RESULT(yes),
242 	[AC_LIBOBJ(recallocarray) AC_MSG_RESULT([no])],
243 	[AC_LIBOBJ(recallocarray) AC_MSG_RESULT([no])]
244 )
245 
246 # Look for imsg_init in libutil.
247 AC_SEARCH_LIBS(imsg_init, util, found_imsg_init=yes, found_imsg_init=no)
248 if test "x$found_imsg_init" = xyes; then
249 	AC_DEFINE(HAVE_IMSG)
250 else
251 	AC_LIBOBJ(imsg)
252 	AC_LIBOBJ(imsg-buffer)
253 fi
254 
255 # libevent (for gotwebd).  Lifted from tmux.
256 # Look for libevent. Try libevent_core or libevent with pkg-config first then
257 # look for the library.
258 PKG_CHECK_MODULES(
259 	LIBEVENT_CORE,
260 	[libevent_core >= 2],
261 	[
262 		AM_CPPFLAGS="$LIBEVENT_CORE_CFLAGS $AM_CPPFLAGS"
263 		CPPFLAGS="$AM_CPPFLAGS $SAVED_CPPFLAGS"
264 		LIBS="$LIBEVENT_CORE_LIBS $LIBS"
265 		found_libevent=yes
266 	],
267 	found_libevent=no
268 )
269 if test x$found_libevent = xno; then
270 	PKG_CHECK_MODULES(
271 		LIBEVENT,
272 		[libevent >= 2],
273 		[
274 			AM_CPPFLAGS="$LIBEVENT_CFLAGS $AM_CPPFLAGS"
275 			CPPFLAGS="$AM_CPPFLAGS $SAVED_CPPFLAGS"
276 			LIBS="$LIBEVENT_LIBS $LIBS"
277 			found_libevent=yes
278 		],
279 		found_libevent=no
280 	)
281 fi
282 if test x$found_libevent = xno; then
283 	AC_SEARCH_LIBS(
284 		event_init,
285 		[event_core event event-1.4],
286 		found_libevent=yes,
287 		found_libevent=no
288 	)
289 fi
290 AC_CHECK_HEADER(
291 	event2/event.h,
292 	AC_DEFINE(HAVE_EVENT2_EVENT_H),
293 	[
294 		AC_CHECK_HEADER(
295 			event.h,
296 			AC_DEFINE(HAVE_EVENT_H),
297 			found_libevent=no
298 		)
299 	]
300 )
301 if test "x$found_libevent" = xno; then
302 	AC_MSG_ERROR("libevent not found")
303 fi
304 
305 # libcrypto (via libssl for SHA information)
306 PKG_CHECK_MODULES(
307 	LIBCRYPTO,
308 	libcrypto,
309 	[
310 	 	AM_CFLAGS="$LIBCRYPTO_CFLAGS $AM_CFLAGS"
311 		CFLAGS="$AM_CFLAGS $SAVED_CFLAGS"
312 		LIBS="$LIBCRYPTO_LIBS $LIBS"
313 		found_libcrypto=yes
314 	],
315 	[
316 	 	found_libcrypto=no
317 	]
318 )
319 
320 if test "x$found_libcrypto" = "xyes"; then
321 	AC_DEFINE(HAVE_LIBCRYPTO)
322 fi
323 
324 AC_SEARCH_LIBS(uuid_create, , AC_DEFINE(HAVE_BSD_UUID))
325 AC_SEARCH_LIBS(uuid_create, found_uuid=no, found_uuid=yes)
326 AC_SEARCH_LIBS(mergesort, , AC_DEFINE(HAVE_BSD_MERGESORT))
327 
328 # Don't define HAVE_BSD_UUID on darwin (Apple) as this breaks the BSD API.
329 # Instead, use the UUID implementation wrapper that's in compat/ plus uuid
330 # ossp
331 if test "x$found_uuid" = "xyes" -a "x$PLATFORM" != "darwin"; then
332 	AC_DEFINE(HAVE_BSD_UUID)
333 else
334 	PKG_CHECK_MODULES(
335 		LIBUUID,
336 		uuid,
337 		[
338 			AM_CFLAGS="$LIBUUID_CFLAGS $AM_CFLAGS"
339 			CFLAGS="$AM_CFLAGS $SAVED_CFLAGS"
340 			LIBS="$LIBUUID_LIBS $LIBS"
341 			found_libuuid=yes
342 		],
343 		[
344 			found_libuuid=no
345 		]
346 	)
347 
348 	if test "x$found_libuuid" = "xno"; then
349 		AC_CHECK_HEADER(
350 			uuid.h,
351 			found_libuuid=yes,
352 			found_libuuid=no)
353 	fi
354 fi
355 
356 if test "x$found_libuuid" = "xno"; then
357 	AC_MSG_ERROR("*** couldn't find uuid ***")
358 fi
359 
360 PKG_CHECK_MODULES(
361 	ZLIB,
362 	zlib,
363 	[
364 	 	AM_CFLAGS="$ZLIB_CFLAGS $AM_CFLAGS"
365 		CFLAGS="$AM_CFLAGS $SAVED_CFLAGS"
366 		LIBS="$ZLIB_LIBS $LIBS"
367 		found_zlib=yes
368 	],
369 	[
370 	 	found_zlib=no
371 	]
372 )
373 
374 if test "x$found_zlib" = "xno"; then
375 	AC_CHECK_HEADER(
376 		zlib.h,
377 		,
378 		found_zlib=no)
379 fi
380 
381 if test "x$found_zlib" = "xno"; then
382 	AC_MSG_ERROR("*** couldn't find zlib ***")
383 fi
384 
385 if test "$PLATFORM" = "linux"; then
386 	PKG_CHECK_MODULES(
387 		LIBMD,
388 		libmd,
389 		[
390 			AM_CFLAGS="$LIBMD_CFLAGS $AM_CFLAGS"
391 			CFLAGS="$AM_CFLAGS $SAVED_CFLAGS"
392 			LIBS="$LIBMD_LIBS $LIBS"
393 		],
394 		[
395 			AC_MSG_ERROR("*** couldn't find libmd via pkg-config")
396 		]
397 	)
398 	PKG_CHECK_MODULES(
399 		LIBBSD,
400 		libbsd-overlay,
401 		[
402 			AM_CFLAGS="$LIBBSD_CFLAGS $AM_CFLAGS"
403 			CFLAGS="$AM_CFLAGS $SAVED_CFLAGS"
404 			LIBS="$LIBBSD_LIBS $LIBS"
405 			found_libbsd=yes
406 			AC_DEFINE(HAVE_LIBBSD)
407 		],
408 		[]
409 	)
410 fi
411 
412 # Look for a suitable queue.h.  We hope libbsd is enough, but that is missing
413 # SIMPLEQ.
414 AC_CHECK_DECL(
415 	SIMPLEQ_INIT,
416 	found_queue_h=yes,
417 	found_queue_h=no,
418 )
419 AC_CHECK_DECL(
420 	TAILQ_CONCAT,
421 	found_queue_h=yes,
422 	found_queue_h=no,
423 )
424 AC_CHECK_DECL(
425 	TAILQ_PREV,
426 	,
427 	found_queue_h=no,
428 )
429 AC_CHECK_DECL(
430 	TAILQ_REPLACE,
431 	,
432 	found_queue_h=no,
433 )
434 AC_CHECK_DECL(
435 	SIMPLEQ_ENTRY,
436 	,
437 	found_queue_h=no,
438 )
439 AC_CHECK_DECL(
440 	TAILQ_FOREACH_SAFE,
441 	,
442 	found_queue_h=no,
443 )
444 
445 if test "x$found_queue_h" = xyes -o "x$ac_cv_header_sys_queue_h" = xyes; then
446 	AC_DEFINE(HAVE_QUEUE_H)
447 fi
448 
449 # Look for __progname.
450 AC_MSG_CHECKING(for __progname)
451 AC_LINK_IFELSE([AC_LANG_SOURCE(
452 	[
453 		#include <stdio.h>
454 		#include <stdlib.h>
455 		extern char *__progname;
456 		int main(void) {
457 			const char *cp = __progname;
458 			printf("%s\n", cp);
459 			exit(0);
460 		}
461 	])],
462 	[AC_DEFINE(HAVE___PROGNAME) AC_MSG_RESULT(yes)],
463 	AC_MSG_RESULT(no)
464 )
465 
466 PKG_CHECK_MODULES(
467 	LIBPANELW,
468 	panelw,
469 	found_panel=yes,
470 	found_panel=no
471 )
472 
473 PKG_CHECK_MODULES(
474 	LIBPANELW,
475 	gnupanelw,
476 	found_panel=yes,
477 	found_panel=no
478 )
479 
480 PKG_CHECK_MODULES(
481 	LIBPANELW,
482 	panel,
483 	found_panel=yes,
484 	found_panel=no
485 )
486 if test "x$found_panel" = "xno"; then
487 	AC_CHECK_LIB(panelw, update_panels,,
488 		AC_MSG_ERROR([ "*** panelw not found for ncurses. ***"])
489 	)
490 
491 	LIBPANELW_LIBS="-lpanelw"
492 fi
493 
494 PKG_CHECK_MODULES(
495 	LIBNCURSES,
496 	ncursesw,
497 	found_ncurses=yes,
498 	found_ncurses=no
499 )
500 if test "x$found_ncurses" = xyes; then
501 	AM_CFLAGS="$LIBNCURSES_CFLAGS $LIBTINFO_CFLAGS $LIBPANELW_CFLAGS $AM_CFLAGS"
502 	CFLAGS="$LIBNCURSES_CFLAGS $LIBTINFO_CFLAGS $LIBPANELW_CFLAGS $CFLAGS"
503 	LIBS="$LIBNCURSES_LIBS $LIBTINFO_LIBS $LIBPANELW_LIBS $LIBS"
504 else
505 	AC_CHECK_LIB(
506 		ncursesw,
507 		setupterm,
508 		found_ncurses=yes,
509 		found_ncurses=no
510 	)
511 	if test "x$found_ncurses" = xyes; then
512 		AC_CHECK_HEADER(
513 			ncurses.h,
514 			AM_CFLAGS="$LIBPANELW_CFLAGS $AM_CFLAGS"
515 			CFLAGS="$LIBPANEL_CFLAGS $CFLAGS"
516 			LIBS="$LIBS -lncursesw $LIBPANELW_LIBS",
517 			found_ncurses=no
518 		)
519 	fi
520 fi
521 if test "x$found_ncurses" = xyes; then
522 	AC_DEFINE(HAVE_NCURSES_H)
523 else
524 	# No ncurses, try curses.
525 	AC_CHECK_LIB(
526 		cursesw,
527 		setupterm,
528 		found_curses=yes,
529 		found_curses=no
530 	)
531 	AC_CHECK_HEADER(
532 		curses.h,
533 		,
534 		found_curses=no)
535 	if test "x$found_curses" = xyes; then
536 		AM_CFLAGS="$LIBPANELW_CFLAGS $AM_CFLAGS"
537 		CFLAGS="$LIBPANEL_CFLAGS $CFLAGS"
538 		LIBS="$LIBS -lcursesw $LIBPANELW_LIBS"
539 		AC_DEFINE(HAVE_CURSES_H)
540 	else
541 		AC_MSG_ERROR("curses not found")
542 	fi
543 fi
544 
545 # Save our CFLAGS/CPPFLAGS/LDFLAGS for the Makefile and restore the old user
546 # variables.
547 AC_SUBST(AM_CPPFLAGS)
548 CPPFLAGS="$SAVED_CPPFLAGS"
549 AC_SUBST(AM_CFLAGS)
550 CFLAGS="$SAVED_CFLAGS"
551 AC_SUBST(AM_LDFLAGS)
552 LDFLAGS="$SAVED_LDFLAGS"
553 
554 AC_CONFIG_FILES([Makefile
555 		 compat/Makefile
556 		 libexec/Makefile
557 		 libexec/got-read-tree/Makefile
558 		 libexec/got-fetch-pack/Makefile
559 		 libexec/got-index-pack/Makefile
560 		 libexec/got-read-blob/Makefile
561 		 libexec/got-read-commit/Makefile
562 		 libexec/got-read-gitconfig/Makefile
563 		 libexec/got-read-gotconfig/Makefile
564 		 libexec/got-read-object/Makefile
565 		 libexec/got-read-pack/Makefile
566 		 libexec/got-read-patch/Makefile
567 		 libexec/got-read-tag/Makefile
568 		 libexec/got-send-pack/Makefile
569 		 got/Makefile
570 		 gotadmin/Makefile
571 		 gotwebd/Makefile
572 		 tog/Makefile
573 		 Makefile.common:Makefile.common.in])
574 AC_OUTPUT
575 
576 #                tog/GNUMakefile])
577 #                regress/GNUMakefile
578 #                regress/cmdline/GNUMakefile
579 #                regress/delta/GNUMakefile
580 #                regress/fetch/GNUMakefile
581 #                regress/idset/GNUMakefile
582 #                regress/path/GNUMakefile
583 #                 gotweb/GNUMakefile
584 #                 gotweb/libexec/GNUMakefile
585 #                 gotweb/libexec/got-read-blob/GNUMakefile
586 #                 gotweb/libexec/got-read-commit/GNUMakefile
587 #                 gotweb/libexec/got-read-gitconfig/GNUMakefile
588 #                 gotweb/libexec/got-read-gotconfig/GNUMakefile
589 #                 gotweb/libexec/got-read-object/GNUMakefile
590 #                 gotweb/libexec/got-read-pack/GNUMakefile
591 #                 gotweb/libexec/got-read-tag/GNUMakefile
592 #                 gotweb/libexec/got-read-tree/GNUMakefile