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_s(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 AC_CONFIG_HEADERS([include/got_compat.h])
12 
13 AC_DEFINE_UNQUOTED(VERSION, $VERSION)
14 AC_SUBST(VERSION)
15 AC_SUBST(GOT_RELEASE)
16 
17 AC_DEFINE_UNQUOTED([GOT_VERSION], VERSION, [GoT version string])
18 AC_DEFINE_UNQUOTED([GOT_VERSION_NUMBER], VERSION, [Got version number])
19 
20 AC_USE_SYSTEM_EXTENSIONS
21 AC_CANONICAL_HOST
22 
23 AC_CONFIG_SUBDIRS([template])
24 AC_ARG_ENABLE([gotd],
25 	AS_HELP_STRING([--enable gotd], [build gotd and gotsh]))
26 
27 # Override gotd's empty_path location.
28 AC_ARG_WITH([gotd-empty-path],
29 	    [AS_HELP_STRING([--with-gotd-empty-path],
30 			    [gotd empty path])
31 	    ],
32 	    [GOTD_EMPTY_PATHC=$withval]
33 	    [])
34 AC_SUBST(GOTD_EMPTY_PATHC)
35 
36 # Override where git's libexec helpers are located for gitwrapper.
37 AC_ARG_WITH([gitwrapper-git-libexec-path],
38 	    [AS_HELP_STRING([--with-gitwrapper-git-libexec-path],
39 			    [git libexec path for gitwrapper])
40 	    ],
41 	    [GITWRAPPER_LIBEXEC_PATHC=$withval]
42 	    [])
43 AC_SUBST(GITWRAPPER_LIBEXEC_PATHC)
44 
45 # When CFLAGS isn't set at this stage and gcc is detected by the macro below,
46 # autoconf will automatically use CFLAGS="-O2 -g". Prevent that by using an
47 # empty default.
48 : ${CFLAGS=""}
49 
50 # Save user CPPFLAGS, CFLAGS and LDFLAGS. We need to change them because
51 # AC_CHECK_HEADER doesn't give us any other way to update the include
52 # paths. But for Makefile.am we want to use AM_CPPFLAGS and friends.
53 SAVED_CFLAGS="$CFLAGS"
54 SAVED_CPPFLAGS="$CPPFLAGS"
55 SAVED_LDFLAGS="$LDFLAGS"
56 
57 # YACC override
58 YACC_OVERRIDE="yes"
59 
60 # Checks for programs.
61 AC_PROG_CC
62 AC_PROG_CPP
63 AC_PROG_INSTALL
64 AC_PROG_LN_S
65 AC_PROG_MAKE_SET
66 if test -z "$YACC"; then
67 YACC_OVERRIDE="no"
68 AC_PROG_YACC
69 fi
70 AM_PROG_AR
71 AC_PROG_RANLIB
72 PKG_PROG_PKG_CONFIG
73 
74 if test "$YACC_OVERRIDE" = "yes"; then
75 	AC_MSG_NOTICE("Using YACC set from environment: $YACC")
76 fi
77 
78 # Checks for header files.
79 AC_CHECK_HEADERS([ \
80 	fcntl.h \
81 	getopt.h \
82 	langinfo.h \
83 	libutil.h \
84 	limits.h \
85 	linux/landlock.h \
86 	locale.h \
87 	netdb.h \
88 	netinet/in.h \
89 	paths.h \
90 	poll.h \
91 	sha.h \
92 	sha1.h \
93 	sha2.h \
94 	sha256.h \
95 	stddef.h \
96 	stdint.h \
97 	stdlib.h \
98 	string.h \
99 	sys/ioctl.h \
100 	sys/param.h \
101 	sys/poll.h \
102 	sys/queue.h \
103 	sys/select.h \
104 	sys/socket.h \
105 	sys/time.h \
106 	sys/tree.h \
107 	util.h \
108 	unistd.h \
109 	wchar.h \
110 ])
111 
112 AC_HEADER_DIRENT
113 AC_CHECK_DECL([F_CLOSEM],
114 	      HAVE_FCNTL_CLOSEM
115 	      AC_DEFINE([HAVE_FCNTL_CLOSEM], [1],
116 			[Use F_CLOSEM fcntl for closefrom]),
117 			[],
118 			[#include <limits.h>
119 			 #include <fcntl.h>
120 			]
121 )
122 
123 AC_MSG_CHECKING([for /proc/pid/fd directory])
124 if test -d "/proc/$$/fd" ; then
125 	AC_DEFINE([HAVE_PROC_PID], [1], [Define if you have /proc/$pid/fd])
126 	AC_MSG_RESULT([yes])
127 else
128 	AC_MSG_RESULT([no])
129 fi
130 
131 AC_MSG_CHECKING([whether program_invocation_short_name is defined])
132 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
133 	#include <argp.h>
134 ]], [[
135 	program_invocation_short_name = "test";
136 ]])], [
137 	AC_MSG_RESULT([yes])
138 	AC_DEFINE([HAVE_PROGRAM_INVOCATION_SHORT_NAME], [1],
139 		[Define if program_invocation_short_name is defined])
140 ], [
141 	AC_MSG_RESULT([no])
142 ])
143 
144 # Look for prctl(PR_SET_NAME).
145 AC_CHECK_DECL(
146 	[PR_SET_NAME],
147 	[AC_DEFINE([HAVE_PR_SET_NAME], [1], [Define if PR_SET_NAME is defined])],
148 	[],
149 	[#include <sys/prctl.h>]
150 )
151 
152 AM_CONDITIONAL([HAVE_SHA2], [test "x$ac_cv_header_sha2_h" = xyes])
153 
154 AC_CACHE_CHECK([whether getopt has optreset support],
155 		ac_cv_have_getopt_optreset, [
156 	AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <getopt.h> ]],
157 		[[ extern int optreset; optreset = 0; ]])],
158 	[ ac_cv_have_getopt_optreset="yes" ],
159 	[ ac_cv_have_getopt_optreset="no"
160 	])
161 ])
162 
163 AM_CONDITIONAL([HAVE_GETOPT], [test "x$ac_cv_have_getopt_optreset" = "xyes"])
164 if test "x$ac_cv_have_getopt_optreset" = "xyes" ; then
165 	AC_DEFINE([HAVE_GETOPT_OPTRESET], [1],
166 		[Define if your getopt(3) defines and uses optreset])
167 fi
168 
169 AC_CHECK_MEMBERS([struct pollfd.fd], [], [], [[
170 #include <sys/types.h>
171 #ifdef HAVE_POLL_H
172 #include <poll.h>
173 #endif
174 #ifdef HAVE_SYS_POLL_H
175 #include <sys/poll.h>
176 #endif
177 ]])
178 
179 # Checks for typ edefs, structures, and compiler characteristics.
180 AC_CHECK_HEADER_STDBOOL
181 AC_C_INLINE
182 AC_TYPE_INT64_T
183 AC_TYPE_MODE_T
184 AC_TYPE_OFF_T
185 AC_TYPE_PID_T
186 AC_TYPE_SIZE_T
187 AC_TYPE_SSIZE_T
188 AC_TYPE_UINT16_T
189 AC_TYPE_UINT32_T
190 AC_TYPE_UINT64_T
191 AC_TYPE_UINT8_T
192 
193 # Check for ifgroupreq which is only available on BSD.
194 AC_CHECK_TYPES([struct ifgroupreq])
195 
196 # Check for sockaddr_storage.  On some systems, ss_len is filled out, although
197 # this is not mandated by POSIX, and hence systems such as linux, don't have
198 # it.
199 AC_CHECK_TYPES([struct sockaddr_storage], [], [], [
200 #include <sys/types.h>
201 #include <sys/socket.h>
202 ])
203 
204 # Same thing as sockaddr_storage above, only now check if the member exists in
205 # the struct as well.
206 AC_CHECK_MEMBERS([struct sockaddr_storage.ss_len], , ,
207 	[ #include <netdb.h>
208 	  #include <netinet/in.h>
209 	  #include <sys/socket.h> ]
210 )
211 
212 AC_CHECK_MEMBERS([struct sockaddr.sa_len], , ,
213 	[ #include <netdb.h>
214 	  #include <netinet/in.h>
215 	  #include <sys/socket.h> ]
216 )
217 
218 # Both checks above will result in:
219 #
220 # HAVE_STRUCT_SOCKADDR_AS_LEN
221 # SS_LEN
222 #
223 # Either being defined or not.
224 
225 # Look for library needed for flock.
226 AC_SEARCH_LIBS(flock, bsd)
227 
228 # Checks for library functions.
229 AC_FUNC_FORK
230 AC_FUNC_FSEEKO
231 AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
232 AC_FUNC_MALLOC
233 AC_FUNC_MMAP
234 AC_FUNC_REALLOC
235 AC_FUNC_STRERROR_R
236 AC_FUNC_STRNLEN
237 AC_CHECK_FUNCS([ \
238 	dup2 \
239 	flock \
240 	getcwd \
241 	localtime_r \
242 	memchr \
243 	memmove \
244 	memset \
245 	mergesort \
246 	mkdir \
247 	munmap \
248 	nl_langinfo \
249 	realpath \
250 	regcomp \
251 	rmdir \
252 	setlocale \
253 	socket \
254 	setresgid \
255 	setresuid \
256 	setproctitle \
257 	strcasecmp \
258 	strchr \
259 	strcspn \
260 	strdup \
261 	strerror \
262 	strncasecmp \
263 	strndup \
264 	strrchr \
265 	strspn \
266 	strstr \
267 	strtol \
268 	strtoul \
269 	sysconf \
270 	wcwidth \
271 ])
272 
273 AM_CONDITIONAL([HAVE_SETPROCTITLE], [test "x$ac_cv_func_setproctitle" = xyes])
274 
275 if test "x$ac_cv_func_sysconf" = xyes; then
276 	AC_DEFINE([HAVE_SYSCONF], [1], [Define to 1 if sysconf() present])
277 fi
278 
279 # Siphash support.
280 AC_CHECK_FUNCS([SipHash])
281 AM_CONDITIONAL([HAVE_SIPHASH], [test "x$ac_cv_func_SipHash" = xyes])
282 
283 # Check for functions with a compatibility implementation.
284 AC_REPLACE_FUNCS([ \
285 	asprintf \
286 	closefrom \
287 	explicit_bzero \
288 	fmt_scaled \
289 	freezero \
290 	getdtablecount \
291 	getline \
292 	getprogname \
293 	recallocarray \
294 	reallocarray \
295 	strlcat \
296 	strlcpy \
297 	strndup \
298 	strnlen \
299 	strsep \
300 	strtonum \
301 ])
302 AM_CONDITIONAL([HAVE_CLOSEFROM], [test "x$ac_cv_func_closefrom" = xyes])
303 
304 # Always use our getopt because 1) glibc's doesn't enforce argument order 2)
305 # musl does not set optarg to NULL for flags without arguments (although it is
306 # not required to, but it is helpful) 3) there are probably other weird
307 # implementations.
308 AC_LIBOBJ(getopt)
309 
310 # Check for b64_ntop. If we have b64_ntop, we assume b64_pton as well.
311 AC_MSG_CHECKING(for b64_ntop)
312 	AC_LINK_IFELSE([AC_LANG_PROGRAM(
313 	[
314 		#include <sys/types.h>
315 		#include <netinet/in.h>
316 		#include <resolv.h>
317 	],
318 	[
319 		b64_ntop(NULL, 0, NULL, 0);
320 	])],
321 	found_b64_ntop=yes,
322 	found_b64_ntop=no
323 )
324 AC_MSG_RESULT($found_b64_ntop)
325 libresolv_LIBS=""
326 if test "x$found_b64_ntop" = xno; then
327 	AC_MSG_CHECKING(for b64_ntop with -lresolv)
328 	LIBS="-lresolv"
329 	AC_LINK_IFELSE([AC_LANG_PROGRAM(
330 		[
331 			#include <sys/types.h>
332 			#include <netinet/in.h>
333 			#include <resolv.h>
334 		],
335 		[
336 			b64_ntop(NULL, 0, NULL, 0);
337 		])],
338 		found_b64_ntop=yes,
339 		found_b64_ntop=no
340 	)
341 	AC_MSG_RESULT($found_b64_ntop)
342 	libresolv_LIBS="$LIBS"
343 fi
344 if test "x$found_b64_ntop" = xno; then
345 	AC_MSG_CHECKING(for b64_ntop with -lnetwork)
346 	LIBS="-lresolv -lnetwork"
347 	AC_LINK_IFELSE([AC_LANG_PROGRAM(
348 		[
349 			#include <sys/types.h>
350 			#include <netinet/in.h>
351 			#include <resolv.h>
352 		],
353 		[
354 			b64_ntop(NULL, 0, NULL, 0);
355 		])],
356 		found_b64_ntop=yes,
357 		found_b64_ntop=no
358 	)
359 	AC_MSG_RESULT($found_b64_ntop)
360 	libresolv_LIBS="$LIBS"
361 fi
362 
363 AM_CONDITIONAL([HAVE_B64], [test "x$found_b64_ntop" = xyes])
364 if test "x$found_b64_ntop" = xyes; then
365 	AC_DEFINE([HAVE_B64_NTOP], [1], [define if b64_ntop is present])
366 	AC_SUBST(libresolv_LIBS)
367 else
368 	AC_LIBOBJ(base64)
369 fi
370 
371 # Check the platform we're compiling on.
372 AC_MSG_CHECKING(platform)
373 case "$host_os" in
374 	*linux*)
375 		AC_MSG_RESULT(linux)
376 		PLATFORM=linux
377 		;;
378 	*freebsd*)
379 		AC_MSG_RESULT(freebsd)
380 		PLATFORM=freebsd
381 		;;
382 	*darwin*)
383 		AC_MSG_RESULT(darwin)
384 		PLATFORM=darwin
385 		;;
386 	*netbsd*)
387 		AC_MSG_RESULT(netbsd)
388 		PLATFORM=netbsd
389 		;;
390 	*openbsd*)
391 		AC_MSG_RESULT(openbsd)
392 		PLATFORM=openbsd
393 		;;
394 	*dragonfly*)
395 		AC_MSG_RESULT(dragonfly)
396 		PLATFORM=dragonflybsd
397 		;;
398 	*)
399 		AC_MSG_RESULT(unknown)
400 		PLATFORM=unknown
401 		;;
402 esac
403 AC_SUBST(PLATFORM)
404 AM_CONDITIONAL([HOST_FREEBSD], [test "$PLATFORM" = "freebsd"])
405 AM_CONDITIONAL([HOST_LINUX], [test "$PLATFORM" = "linux"])
406 AM_CONDITIONAL([HOST_DARWIN], [test "$PLATFORM" = "darwin"])
407 AM_CONDITIONAL([HOST_NETBSD], [test "$PLATFORM" = "netbsd"])
408 AM_CONDITIONAL([HOST_OPENBSD], [test "$PLATFORM" = "openbsd"])
409 AM_CONDITIONAL([HOST_DRAGONFLYBSD], [test "$PLATFORM" = "dragonflybsd"])
410 
411 # On OpenBSD, these functions are already defined, yet looking for them in
412 # this way on OpenBSD breaks <sha2.h> inclusion.
413 # FIXME: this needs addressing.
414 if test "x$PLATFORM" != "xopenbsd"; then
415 	AC_CHECK_FUNCS([ \
416 		SHA256Update \
417 		SHA384Update \
418 		SHA512Update \
419 	])
420 fi
421 
422 # Look for yacc.
423 if test "YACC_OVERRIDE" = "yes" && test -n "$YACC" \
424 	&& ! command -v "$YACC" >/dev/null 2>&1; then
425 	AC_MSG_ERROR("yacc not found: $YACC")
426 fi
427 
428 if test x"$PLATFORM" = "xdarwin"; then
429 	# Check for and/or set HOMEBREW_PREFIX.  brew is a common way of
430 	# installing applications.  The other is MacPorts.
431 	#
432 	# Before Apple Silicon existed (M1 onward), the paths for applications
433 	# installed via homebrew was typically /usr/local.  However, with M1
434 	# onward, this changed to a different path.
435 	#
436 	# Rather than hardcode this, check for HOMEBREW_PREFIX in the
437 	# environment if it's already set, and use it.  Otherwise, check for
438 	# brew(1) and use that.  If that fails, default to /usr/local
439 	#
440 	# This also means that MacPorts should continue to work.
441 	#
442 	# But with MacPorts, we should also check --prefix, and use that if it
443 	# has been supplied.
444 	#
445 	# In both cases, the variable HOMEBREW_PREFIX is used for both.
446 	HB_PREFIX=""
447 	FOUND_BISON="no"
448 	GNUBISON=""
449 	if test -z "$HOMEBREW_PREFIX" -o "$HOMEBREW_PREFIX" = "NONE"; then
450 		# HOMEBREW_PREFIX not set, check for brew(1)
451 		if command -v brew >/dev/null 2>&1; then
452 			AC_MSG_NOTICE("HOMEBREW_PREFIX set via 'brew --prefix'")
453 			export HOMEBREW_PREFIX="$(brew --prefix)"
454 		fi
455 
456 		if test -z "$HOMEBREW_PREFIX" -o "$HOMEBREW_PREFIX" = "NONE"
457 		then
458 			# Default.
459 			if test -z "${prefix}" -o "${prefix}" = "NONE"; then
460 				export HOMEBREW_PREFIX="/usr/local"
461 				HB_PREFIX="/usr/local"
462 				AC_MSG_NOTICE("HOMEBREW_PREFIX defaulting to $HB_PREFIX")
463 			else
464 				HB_PREFIX="$(eval echo ${prefix})"
465 				if test "$HB_PREFIX" = "NONE"; then
466 					HB_PREFIX="/opt/local"
467 				else
468 					AC_MSG_NOTICE("HOMEBREW_PREFIX using --prefix")
469 				fi
470 				export HOMEBREW_PREFIX="$HB_PREFIX"
471 			fi
472 		fi
473 	fi
474 
475 	AC_MSG_NOTICE("HOMEBREW_PREFIX determined as: $HOMEBREW_PREFIX")
476 
477 	if test "$YACC_OVERRIDE" = "no" && \
478 		! test -x "${HOMEBREW_PREFIX}/opt/bison/bin/bison"; then
479 		AC_MSG_WARN([
480 			     "***********************************************************
481 			     GNU Bison not found: ${HOMEBREW_PREFIX}/opt/bison/bin/bison
482 			     ***********************************************************
483 
484 			     Falling back to checking either /usr/local or \${prefix}"
485 		])
486 
487 		FOUND_BISON="no"
488 		AC_MSG_WARN("Trying ${HB_PREFIX}/opt/bison/bin/bison")
489 		if test -x "${HB_PREFIX}/opt/bison/bin/bison"; then
490 			export HOMEBREW_PREFIX="/usr/local"
491 			FOUND_BISON="yes"
492 			GNUBISON="${HB_PREFIX}/opt/bison/bin/bison"
493 		fi
494 
495 		if test "$FOUND_BISON" = "no"; then
496 			HB_PREFIX="/opt/local"
497 			AC_MSG_WARN("Trying ${HB_PREFIX}/bin/bison")
498 
499 			if test -x "${HB_PREFIX}/bin/bison"; then
500 				export HOMEBREW_PREFIX="${HB_PREFIX}"
501 				GNUBISON="${HB_PREFIX}/bin/bison"
502 				FOUND_BISON="yes"
503 			fi
504 		fi
505 	else
506 		FOUND_BISON="yes"
507 		GNUBISON="${HOMEBREW_PREFIX}/opt/bison/bin/bison"
508 	fi
509 
510 	if test "$FOUND_BISON" = "no" && test "$YACC_OVERRIDE" = "no"; then
511 		AC_MSG_ERROR("*** Couldn't find GNU BISON ***")
512 	fi
513 
514 	# Override YACC here to point to the GNU version of bison.
515 	if test "$YACC_OVERRIDE" = "yes"; then
516 		export YACC="$YACC -y"
517 	else
518 		AC_MSG_NOTICE("Found GNU Bison as: $GNUBISON")
519 		export YACC="${GNUBISON} -y"
520 	fi
521 	export LDFLAGS="-L${HOMEBREW_PREFIX}/opt/ncurses/lib -L${HOMEBREW_PREFIX}/opt/openssl@3/lib $LDFLAGS"
522 	export CPPFLAGS="-I${HOMEBREW_PREFIX}/opt/ncurses/include -I${HOMEBREW_PREFIX}/opt/openssl@3/include $CPPFLAGS"
523 	export PKG_CONFIG_PATH="${HOMEBREW_PREFIX}/opt/ncurses/lib/pkgconfig"
524 	export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:${HOMEBREW_PREFIX}/opt/openssl@3/lib/pkgconfig"
525 fi
526 
527 # Landlock detection.
528 AC_MSG_CHECKING([for landlock])
529 AM_CONDITIONAL([HAVE_LINUX_LANDLOCK],
530     [test "x$ac_cv_header_linux_landlock_h" = "xyes"])
531 if test "x$ac_cv_header_linux_landlock_h" = "xyes"; then
532 	AC_MSG_RESULT(yes)
533 else
534 	AC_MSG_RESULT(no)
535 fi
536 
537 # Clang sanitizers wrap reallocarray even if it isn't available on the target
538 # system. When compiled it always returns NULL and crashes the program. To
539 # detect this we need a more complicated test.
540 AC_MSG_CHECKING([for working reallocarray])
541 AC_RUN_IFELSE([AC_LANG_PROGRAM(
542 		[#include <stdlib.h>],
543 		[return (reallocarray(NULL, 1, 1) == NULL);]
544 	)],
545 	AC_MSG_RESULT(yes),
546 	[AC_LIBOBJ(reallocarray) AC_MSG_RESULT([no])],
547 	[AC_LIBOBJ(reallocarray) AC_MSG_RESULT([no])]
548 )
549 AC_MSG_CHECKING([for working recallocarray])
550 AC_RUN_IFELSE([AC_LANG_PROGRAM(
551 		[#include <stdlib.h>],
552 		[return (recallocarray(NULL, 1, 1, 1) == NULL);]
553 	)],
554 	AC_MSG_RESULT(yes),
555 	[AC_LIBOBJ(recallocarray) AC_MSG_RESULT([no])],
556 	[AC_LIBOBJ(recallocarray) AC_MSG_RESULT([no])]
557 )
558 
559 # Look for imsg_init in libutil.
560 AC_SEARCH_LIBS(imsg_init, util, found_imsg_init=yes, found_imsg_init=no)
561 AM_CONDITIONAL([HAVE_IMSG], [test "x$found_imsg_init" = "xyes"])
562 if test "x$found_imsg_init" = "xyes"; then
563 	AC_DEFINE([HAVE_IMSG], [1], [Define to 1 if imsg is declared in libutil])
564 	libutil_LIBS="$ac_cv_search_imsg_init"
565 	AC_SUBST(libutil_LIBS)
566 fi
567 
568 # libevent (for gotwebd).  Lifted from tmux.
569 # Look for libevent. Try libevent_core or libevent with pkg-config first then
570 # look for the library.
571 found_libevent=no
572 PKG_CHECK_MODULES(
573 	LIBEVENT_CORE,
574 	[libevent_core >= 2],
575 	[
576 		libevent_CFLAGS="$LIBEVENT_CORE_CFLAGS"
577 		libevent_LIBS="$LIBEVENT_CORE_LIBS"
578 		AC_SUBST(libevent_CFLAGS)
579 		AC_SUBST(libevent_LIBS)
580 		found_libevent=yes
581 	],
582 	found_libevent=no
583 )
584 if test x$found_libevent = xno; then
585 	PKG_CHECK_MODULES(
586 		LIBEVENT,
587 		[libevent >= 2],
588 		[
589 			libevent_CFLAGS="$LIBEVENT_CFLAGS"
590 			libevent_LIBS="$LIBEVENT_LIBS"
591 			AC_SUBST(libevent_CFLAGS)
592 			AC_SUBST(libevent_LIBS)
593 			found_libevent=yes
594 		],
595 		found_libevent=no
596 	)
597 fi
598 if test x$found_libevent = xno; then
599 	AC_SEARCH_LIBS(
600 		event_init,
601 		[event_core event event-1.4],
602 		found_libevent=yes,
603 		found_libevent=no
604 	)
605 
606 	if test "x$found_libevent" = "xyes"; then
607 		libevent_LIBS="$ac_cv_search_event_init"
608 		AC_SUBST(libevent_LIBS)
609 	fi
610 fi
611 
612 if test x$found_libevent = xno; then
613 AC_CHECK_HEADER(
614 	event2/event.h,
615 	AC_DEFINE([HAVE_EVENT2_EVENT_H], [1], [libevent2 has event.h]),
616 	[
617 		AC_CHECK_HEADER(
618 			event.h,
619 			AC_DEFINE([HAVE_EVENT_H], [0], [libevent]),
620 			found_libevent=no
621 		)
622 	]
623 )
624 fi
625 
626 if test "x$found_libevent" = xno; then
627 	AC_MSG_ERROR("libevent not found")
628 fi
629 
630 AC_CHECK_FUNC([uuid_create], [found_uuid=yes], [found_uuid=no])
631 
632 # Don't define HAVE_BSD_UUID on darwin (Apple) as this breaks the BSD API.
633 # Instead, use the UUID implementation wrapper that's in compat/ plus uuid
634 # ossp
635 if test "x$found_uuid" = "xyes" -a "x$PLATFORM" != "darwin"; then
636 	AC_DEFINE([HAVE_BSD_UUID], [1], [BSD UUID])
637 else
638 	PKG_CHECK_MODULES(
639 		LIBUUID,
640 		uuid,
641 		[
642 			libuuid_CFLAGS="$LIBUUID_CFLAGS"
643 			libuuid_LIBS="$LIBUUID_LIBS"
644 			AC_SUBST(libuuid_CFLAGS)
645 			AC_SUBST(libuuid_LIBS)
646 			found_libuuid=yes
647 		],
648 		[
649 			found_libuuid=no
650 		]
651 	)
652 
653 	if test "x$found_libuuid" = "xno"; then
654 		AC_CHECK_HEADER(
655 			uuid.h,
656 			found_libuuid=yes,
657 			found_libuuid=no)
658 	fi
659 fi
660 
661 if test "x$found_libuuid" = "xno"; then
662 	AC_MSG_ERROR("*** couldn't find uuid ***")
663 fi
664 
665 PKG_CHECK_MODULES(
666 	ZLIB,
667 	zlib,
668 	[
669 		zlib_CFLAGS="$ZLIB_CFLAGS"
670 		zlib_LIBS="$ZLIB_LIBS"
671 		AC_SUBST(zlib_CFLAGS)
672 		AC_SUBST(zlib_LIBS)
673 		found_zlib=yes
674 	],
675 	[
676 	 	found_zlib=no
677 	]
678 )
679 
680 if test "x$found_zlib" = "xno"; then
681 	AC_CHECK_HEADER(
682 		zlib.h,
683 		,
684 		found_zlib=no)
685 fi
686 
687 if test "x$found_zlib" = "xno"; then
688 	AC_MSG_ERROR("*** couldn't find zlib ***")
689 fi
690 
691 if test "$PLATFORM" = "linux"; then
692 	PKG_CHECK_MODULES(
693 		LIBBSD,
694 		libbsd-overlay,
695 		[
696 		 	libbsd_CFLAGS="$LIBBSD_CFLAGS"
697 			libbsd_LIBS="$LIBBSD_LIBS"
698 			AC_SUBST(libbsd_CFLAGS)
699 			AC_SUBST(libbsd_LIBS)
700 			AC_DEFINE([HAVE_LIBBSD], [1], [BSD UUID])
701 		],
702 		[
703 			AC_MSG_ERROR("*** couldn't find libbsd-overlay via pkg-config")
704 		]
705 
706 	)
707 
708 	# Add LIBBSD_{CFLAGS,LIBS} to the environment here, as libbsd puts its
709 	# header files in a non-standard location, which means the overlay for
710 	# <sys/tree.h> and <sys/queue.h> won't be found.
711 	CFLAGS="$CFLAGS $LIBBSD_CFLAGS"
712 	LIBS="$LIBS $LIBBSD_LIBS"
713 
714 	PKG_CHECK_MODULES(
715 		LIBMD,
716 		libmd,
717 		[
718 		     libmd_CFLAGS="$LIBMD_CFLAGS"
719 		     libmd_LIBS="$LIBMD_LIBS"
720 		     AC_SUBST(libmd_CFLAGS)
721 		     AC_SUBST(libmd_LIBS)
722 		], []
723 	)
724 	CFLAGS="$CFLAGS $LIBMD_CFLAGS"
725 	LIBS="$LIBS $LIBMD_LIBS"
726 
727 fi
728 
729 # Look for a suitable queue.h.  We hope libbsd is enough, but that is missing
730 # some declarations.
731 AC_CHECK_DECL(
732 	TAILQ_CONCAT,
733 	found_queue_h=yes,
734 	found_queue_h=no,
735 	[#include <sys/queue.h>]
736 )
737 AC_CHECK_DECL(
738 	TAILQ_PREV,
739 	,
740 	found_queue_h=no,
741 	[#include <sys/queue.h>]
742 )
743 AC_CHECK_DECL(
744 	TAILQ_FOREACH_SAFE,
745 	,
746 	found_queue_h=no,
747 	[#include <sys/queue.h>]
748 )
749 
750 if test "x$found_queue_h" = xyes; then
751 	AC_DEFINE([HAVE_QUEUE_H], [1], [sys/queue.h])
752 else
753 	AC_MSG_ERROR("*** sys/queue.h missing key defines ***)
754 fi
755 
756 AC_CHECK_DECL(
757 	RB_GENERATE_STATIC,
758 	found_sys_tree_h=yes,
759 	found_sys_tree_h=no,
760 	[#include <sys/tree.h>]
761 )
762 
763 if test "x$found_sys_tree_h" = xyes; then
764 	AC_DEFINE([HAVE_TREE_H], [1], [sys/tree.h])
765 else
766 	AC_MSG_NOTICE("Using compat/tree.h")
767 fi
768 
769 # Look for __progname.
770 AC_MSG_CHECKING(for __progname)
771 AC_LINK_IFELSE([AC_LANG_SOURCE(
772 	[
773 		#include <stdio.h>
774 		#include <stdlib.h>
775 		extern char *__progname;
776 		int main(void) {
777 			const char *cp = __progname;
778 			printf("%s\n", cp);
779 			exit(0);
780 		}
781 	])],
782 	[AC_DEFINE([HAVE___PROGNAME], [1], [___progname]) AC_MSG_RESULT(yes)],
783 	[AC_MSG_RESULT(no)]
784 )
785 
786 PKG_CHECK_MODULES(
787 	LIBPANELW,
788 	panelw,
789 	LIBPANELW_LIBS="$LIBPANELW_LIBS"
790 	found_panel=yes,
791 	found_panel=no
792 )
793 
794 if test "x$found_panel" = "xno"; then
795 PKG_CHECK_MODULES(
796 	LIBPANELW,
797 	gnupanelw,
798 	[
799 		LIBPANELW_LIBS="$LIBPANELW_LIBS"
800 		found_panel=yes
801 	],
802 	found_panel=no
803 )
804 fi
805 
806 if test "x$found_panel" = "xno"; then
807 PKG_CHECK_MODULES(
808 	LIBPANELW,
809 	panel,
810 	[
811 		LIBPANELW_LIBS="$LIBPANELW_LIBS"
812 		found_panel=yes
813 	],
814 	found_panel=no
815 )
816 fi
817 
818 if test "x$found_panel" = "xno"; then
819 	AC_CHECK_LIB(panelw, update_panels, [],
820 		AC_MSG_ERROR([ "*** panelw not found for ncurses. ***"]),
821 		[-lncurses]
822 	)
823 
824 fi
825 
826 PKG_CHECK_MODULES(
827 	LIBNCURSES,
828 	ncursesw,
829 	found_ncurses=yes,
830 	found_ncurses=no
831 )
832 if test "x$found_ncurses" = xyes; then
833 	libncurses_CFLAGS="$LIBNCURSES_CFLAGS $LIBTINFO_CFLAGS $LIBPANELW_CFLAGS"
834 	libncurses_LIBS="$LIBNCURSES_LIBS $LIBTINFO_LIBS $LIBPANELW_LIBS"
835 	AC_SUBST(libncurses_CFLAGS)
836 	AC_SUBST(libncurses_LIBS)
837 else
838 	AC_SEARCH_LIBS(
839 		setupterm,
840 		found_ncurses=yes,
841 		found_ncurses=no
842 	)
843 	if test "x$found_ncurses" = xyes; then
844 		AC_CHECK_HEADER(
845 			ncurses.h,
846 			libncurses_CFLAGS="$LIBPANELW_CFLAGS $LIBPANEL_CFLAGS"
847 			libncurses_LIBS="$LIBPANELW_LIBS -lncursesw"
848 			AC_SUBST(libncurses_CFLAGS)
849 			AC_SUBST(libncurses_LIBS)
850 		)
851 	fi
852 fi
853 if test "x$found_ncurses" = xyes; then
854 	AC_DEFINE([HAVE_NCURSES_H], [1], [NCurses])
855 else
856 	# No ncurses, try curses.
857 	AC_CHECK_FUNC(
858 		setupterm,
859 		found_curses=yes,
860 		found_curses=no
861 	)
862 	AC_CHECK_HEADER(
863 		curses.h,
864 		found_curses=yes,
865 		found_curses=no)
866 	if test "x$found_curses" = xyes; then
867 		libncurses_CFLAGS="$LIBPANELW_CFLAGS $LIBPANEL_CFLAGS"
868 		libncurses_LIBS="$LIBPANELW_LIBS -lncursesw -lpanelw"
869 		AC_SUBST(libncurses_CFLAGS)
870 		AC_SUBST(libncurses_LIBS)
871 		AC_DEFINE([HAVE_CURSES_H], [1], [Curses_h])
872 	else
873 		AC_MSG_ERROR("curses not found")
874 	fi
875 fi
876 
877 # Save our CFLAGS/CPPFLAGS/LDFLAGS for the Makefile and restore the old user
878 # variables.
879 AC_SUBST(AM_CPPFLAGS)
880 CPPFLAGS="$SAVED_CPPFLAGS"
881 AC_SUBST(AM_CFLAGS)
882 CFLAGS="$SAVED_CFLAGS"
883 AC_SUBST(AM_LDFLAGS)
884 LDFLAGS="$SAVED_LDFLAGS"
885 
886 # LIBS is designed to accumulate library dependencies as checks for them are
887 # peformed, so that this can be included directly to ld(1).
888 #
889 # However, this hinders the splitting up of the library dependencies so that
890 # they're targetted just where they're needed.  Flatting LIBS here ensures
891 # that this happens appropriately.
892 LIBS=""
893 
894 AH_BOTTOM([#include "got_compat2.h"])
895 
896 AM_CONDITIONAL([GOTD_ENABLED], [test "x$enable_gotd" = xyes])
897 
898 AC_CONFIG_FILES([Makefile
899 		 compat/Makefile
900 		 cvg/Makefile
901 		 libexec/Makefile
902 		 libexec/got-read-tree/Makefile
903 		 libexec/got-fetch-pack/Makefile
904 		 libexec/got-index-pack/Makefile
905 		 libexec/got-read-blob/Makefile
906 		 libexec/got-read-commit/Makefile
907 		 libexec/got-read-gitconfig/Makefile
908 		 libexec/got-read-gotconfig/Makefile
909 		 libexec/got-read-object/Makefile
910 		 libexec/got-read-pack/Makefile
911 		 libexec/got-read-patch/Makefile
912 		 libexec/got-read-tag/Makefile
913 		 libexec/got-send-pack/Makefile
914 		 got/Makefile
915 		 gotadmin/Makefile
916 		 gotwebd/Makefile
917 		 tog/Makefile
918 		 Makefile.common:Makefile.common.in])
919 
920 if test "x$enable_gotd" = "xyes"; then
921 	AC_CONFIG_FILES([gitwrapper/Makefile])
922 	AC_CONFIG_FILES([gotd/Makefile])
923 	AC_CONFIG_FILES([gotsh/Makefile])
924 	AC_CONFIG_FILES([gotctl/Makefile])
925 fi
926 
927 AC_OUTPUT
928 
929 executables="$(eval echo ${exec_prefix}/bin)"
930 helpers="$(eval echo ${libexecdir})"
931 manpages="$(eval echo ${mandir})"
932 gotdep="$GOTD_EMPTY_PATHC"
933 gotgwlep="$GITWRAPPER_LIBEXEC_PATHC"
934 
935 if test -z "$enable_gotd"; then
936 	enable_gotd="no"
937 	gotdep="N/A"
938 	gotgwlep="N/A"
939 fi
940 
941 if test -z "$gotdep"; then
942 	gotdep="N/A"
943 fi
944 
945 if test -z "$gotgwlep"; then
946 	gotgwlep="N/A"
947 fi
948 
949 echo "
950 Configured got-portable with:
951 
952  Version:      $VERSION
953 
954  Prefix:           ${prefix}
955  Executables:      ${executables}
956  Bison:            $YACC
957  CFlags:           $CFLAGS
958  Gotd:             ${enable_gotd}
959    Empty Path:     ${gotdep}
960    Gitwrapper:     ${gotgwlep}
961  Helpers:          ${helpers}
962  Man pages:        ${manpages}
963 "