1 # Process this file with autoconf to produce a configure script.
2 
3 AC_PREREQ([2.69])
4 AC_INIT([got-portable], [0.60], [thomas@xteddy.org])
5 AC_CONFIG_AUX_DIR(etc)
6 AC_CONFIG_SRCDIR([lib/rcsutil.h])
7 AM_INIT_AUTOMAKE([foreign subdir-objects])
8 
9 GOT_RELEASE=No
10 
11 AC_DEFINE_UNQUOTED(VERSION, "$VERSION")
12 AC_SUBST(VERSION)
13 AC_SUBST(GOT_RELEASE)
14 
15 AC_CANONICAL_HOST
16 
17 # When CFLAGS isn't set at this stage and gcc is detected by the macro below,
18 # autoconf will automatically use CFLAGS="-O2 -g". Prevent that by using an
19 # empty default.
20 : ${CFLAGS=""}
21 
22 # Save user CPPFLAGS, CFLAGS and LDFLAGS. We need to change them because
23 # AC_CHECK_HEADER doesn't give us any other way to update the include
24 # paths. But for Makefile.am we want to use AM_CPPFLAGS and friends.
25 SAVED_CFLAGS="$CFLAGS"
26 SAVED_CPPFLAGS="$CPPFLAGS"
27 SAVED_LDFLAGS="$LDFLAGS"
28 
29 # Checks for programs.
30 AC_PROG_CC
31 AC_PROG_CPP
32 AC_PROG_INSTALL
33 AC_PROG_LN_S
34 AC_PROG_MAKE_SET
35 AC_PROG_YACC
36 AC_PROG_RANLIB
37 PKG_PROG_PKG_CONFIG
38 AC_USE_SYSTEM_EXTENSIONS
39 
40 # Checks for header files.
41 AC_CHECK_HEADERS([ \
42 	fcntl.h \
43 	langinfo.h \
44 	limits.h \
45 	linux/landlock.h \
46 	locale.h \
47 	netdb.h \
48 	netinet/in.h \
49 	paths.h \
50 	stddef.h \
51 	stdint.h \
52 	stdlib.h \
53 	string.h \
54 	sys/ioctl.h \
55 	sys/param.h \
56 	sys/socket.h \
57 	sys/time.h \
58 	sys/tree.h \
59 	util.h \
60 	unistd.h \
61 	wchar.h \
62 ])
63 
64 # Checks for typ edefs, structures, and compiler characteristics.
65 AC_CHECK_HEADER_STDBOOL
66 AC_C_INLINE
67 AC_TYPE_INT64_T
68 AC_TYPE_MODE_T
69 AC_TYPE_OFF_T
70 AC_TYPE_PID_T
71 AC_TYPE_SIZE_T
72 AC_TYPE_SSIZE_T
73 AC_TYPE_UINT16_T
74 AC_TYPE_UINT32_T
75 AC_TYPE_UINT64_T
76 AC_TYPE_UINT8_T
77 
78 # Look for library needed for flock.
79 AC_SEARCH_LIBS(flock, bsd)
80 
81 # Checks for library functions.
82 AC_FUNC_FORK
83 AC_FUNC_FSEEKO
84 AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
85 AC_FUNC_MALLOC
86 AC_FUNC_MMAP
87 AC_FUNC_REALLOC
88 AC_FUNC_STRERROR_R
89 AC_FUNC_STRNLEN
90 AC_CHECK_FUNCS([ \
91 	dup2 \
92 	flock \
93 	getcwd \
94 	localtime_r \
95 	memchr \
96 	memmove \
97 	memset \
98 	mkdir \
99 	munmap \
100 	nl_langinfo \
101 	realpath \
102 	regcomp \
103 	rmdir \
104 	setlocale \
105 	socket \
106 	strcasecmp \
107 	strchr \
108 	strcspn \
109 	strdup \
110 	strerror \
111 	strlcpy \
112 	strncasecmp \
113 	strndup \
114 	strrchr \
115 	strspn \
116 	strstr \
117 	strtol \
118 	strtoul \
119 	wcwidth \
120 ])
121 
122 # Check for functions with a compatibility implementation.
123 AC_REPLACE_FUNCS([ \
124 	asprintf \
125 	closefrom \
126 	explicit_bzero \
127 	fmt_scaled \
128 	freezero \
129 	getdtablecount \
130 	getline \
131 	getprogname \
132 	recallocarray \
133 	reallocarray \
134 	strlcat \
135 	strlcpy \
136 	strndup \
137 	strsep \
138 	strtonum \
139 ])
140 
141 # Always use our getopt because 1) glibc's doesn't enforce argument order 2)
142 # musl does not set optarg to NULL for flags without arguments (although it is
143 # not required to, but it is helpful) 3) there are probably other weird
144 # implementations.
145 AC_LIBOBJ(getopt)
146 
147 # Check the platform we're compiling on.
148 AC_MSG_CHECKING(platform)
149 case "$host_os" in
150 	*linux*)
151 		AC_MSG_RESULT(linux)
152 		PLATFORM=linux
153 		;;
154 	*freebsd*)
155 		AC_MSG_RESULT(freebsd)
156 		PLATFORM=freebsd
157 		;;
158 	*)
159 		AC_MSG_RESULT(unknown)
160 		PLATFORM=unknown
161 		;;
162 esac
163 AC_SUBST(PLATFORM)
164 AM_CONDITIONAL([HOST_FREEBSD], [test "$PLATFORM" = "freebsd"])
165 AM_CONDITIONAL([HOST_LINUX], [test "$PLATFORM" = "linux"])
166 
167 # Landlock detection.
168 AC_MSG_CHECKING([for landlock])
169 AM_CONDITIONAL([HAVE_LINUX_LANDLOCK],
170     [test "x$ac_cv_header_linux_landlock_h" = "xyes"])
171 if test "x$ac_cv_header_linux_landlock_h" = "xyes"; then
172 	AC_MSG_RESULT(yes)
173 else
174 	AC_MSG_RESULT(no)
175 fi
176 
177 # Clang sanitizers wrap reallocarray even if it isn't available on the target
178 # system. When compiled it always returns NULL and crashes the program. To
179 # detect this we need a more complicated test.
180 AC_MSG_CHECKING([for working reallocarray])
181 AC_RUN_IFELSE([AC_LANG_PROGRAM(
182 		[#include <stdlib.h>],
183 		[return (reallocarray(NULL, 1, 1) == NULL);]
184 	)],
185 	AC_MSG_RESULT(yes),
186 	[AC_LIBOBJ(reallocarray) AC_MSG_RESULT([no])]
187 )
188 AC_MSG_CHECKING([for working recallocarray])
189 AC_RUN_IFELSE([AC_LANG_PROGRAM(
190 		[#include <stdlib.h>],
191 		[return (recallocarray(NULL, 1, 1, 1) == NULL);]
192 	)],
193 	AC_MSG_RESULT(yes),
194 	[AC_LIBOBJ(recallocarray) AC_MSG_RESULT([no])]
195 )
196 
197 # Look for imsg_init in libutil.
198 AC_SEARCH_LIBS(imsg_init, util, found_imsg_init=yes, found_imsg_init=no)
199 if test "x$found_imsg_init" = xyes; then
200 	AC_DEFINE(HAVE_IMSG)
201 else
202 	AC_LIBOBJ(imsg)
203 	AC_LIBOBJ(imsg-buffer)
204 fi
205 
206 # libcrypto (via libssl for SHA information)
207 PKG_CHECK_MODULES(
208 	LIBCRYPTO,
209 	libcrypto,
210 	[
211 	 	AM_CFLAGS="$LIBCRYTPO_CFLAGS $AM_CFLAGS"
212 		CFLAGS="$AM_CFLAGS $SAVED_CFLAGS"
213 		LIBS="$LIBCRYPTO_LIBS $LIBS"
214 		found_libcrypto=yes
215 	],
216 	[
217 	 	found_libcrypto=no
218 	]
219 )
220 
221 if test "x$found_libcrypto" = "xyes"; then
222 	AC_DEFINE(HAVE_LIBCRYPTO)
223 fi
224 
225 AC_SEARCH_LIBS(uuid_create, , AC_DEFINE(HAVE_BSD_UUID))
226 AC_SEARCH_LIBS(mergesort, , AC_DEFINE(HAVE_BSD_MERGESORT))
227 
228 PKG_CHECK_MODULES(
229 	LIBUUID,
230 	uuid,
231 	[
232 	 	AM_CFLAGS="$LIBUUID_CFLAGS $AM_CFLAGS"
233 		CFLAGS="$AM_CFLAGS $SAVED_CFLAGS"
234 		LIBS="$LIBUUID_LIBS $LIBS"
235 		found_libuuid=yes
236 	],
237 	[
238 	 	found_libuuid=no
239 	]
240 )
241 
242 if test "x$found_libuuid" = "xno"; then
243 	AC_CHECK_HEADER(
244 		uuid.h,
245 		found_libuuid=yes,
246 		found_libuuid=no)
247 fi
248 
249 if test "x$found_libuuid" = "xno"; then
250 	AC_MSG_ERROR("*** couldn't find uuid ***")
251 fi
252 
253 PKG_CHECK_MODULES(
254 	ZLIB,
255 	zlib,
256 	[
257 	 	AM_CFLAGS="$ZLIB_CFLAGS $AM_CFLAGS"
258 		CFLAGS="$AM_CFLAGS $SAVED_CFLAGS"
259 		LIBS="$ZLIB_LIBS $LIBS"
260 		found_zlib=yes
261 	],
262 	[
263 	 	found_zlib=no
264 	]
265 )
266 
267 if test "x$found_zlib" = "xno"; then
268 	AC_CHECK_HEADER(
269 		zlib.h,
270 		,
271 		found_zlib=no)
272 fi
273 
274 if test "x$found_zlib" = "xno"; then
275 	AC_MSG_ERROR("*** couldn't find zlib ***")
276 fi
277 
278 if test "$PLATFORM" = "linux"; then
279 	PKG_CHECK_MODULES(
280 		LIBMD,
281 		libmd,
282 		[
283 			AM_CFLAGS="$LIBMD_CFLAGS $AM_CFLAGS"
284 			CFLAGS="$AM_CFLAGS $SAVED_CFLAGS"
285 			LIBS="$LIBMD_LIBS $LIBS"
286 		],
287 		[
288 			AC_MSG_ERROR("*** couldn't find libmd via pkg-config")
289 		]
290 	)
291 	PKG_CHECK_MODULES(
292 		LIBBSD,
293 		libbsd-overlay,
294 		[
295 			AM_CFLAGS="$LIBBSD_CFLAGS $AM_CFLAGS"
296 			CFLAGS="$AM_CFLAGS $SAVED_CFLAGS"
297 			LIBS="$LIBBSD_LIBS $LIBS"
298 			found_libbsd=yes
299 			AC_DEFINE(HAVE_LIBBSD)
300 		],
301 		[]
302 	)
303 fi
304 
305 # Look for a suitable queue.h.  We hope libbsd is enough, but that is missing
306 # SIMPLEQ.
307 AC_CHECK_DECL(
308 	SIMPLEQ_INIT,
309 	found_queue_h=yes,
310 	found_queue_h=no,
311 	[#include <sys/queue.h>]
312 )
313 AC_CHECK_DECL(
314 	TAILQ_CONCAT,
315 	found_queue_h=yes,
316 	found_queue_h=no,
317 	[#include <sys/queue.h>]
318 )
319 AC_CHECK_DECL(
320 	TAILQ_PREV,
321 	found_queue_h=yes,
322 	found_queue_h=no,
323 	[#include <sys/queue.h>]
324 )
325 AC_CHECK_DECL(
326 	TAILQ_REPLACE,
327 	found_queue_h=yes,
328 	found_queue_h=no,
329 	[#include <sys/queue.h>]
330 )
331 AC_CHECK_DECL(
332 	SIMPLEQ_ENTRY,
333 	,
334 	found_queue_h=no,
335 	[#include <sys/queue.h>]
336 )
337 AC_CHECK_DECL(
338 	TAILQ_FOREACH_SAFE,
339 	,
340 	found_queue_h=no,
341 	[#include <sys/queue.h>]
342 )
343 if test "x$found_queue_h" = xyes; then
344 	AC_DEFINE(HAVE_QUEUE_H)
345 fi
346 
347 # Look for __progname.
348 AC_MSG_CHECKING(for __progname)
349 AC_LINK_IFELSE([AC_LANG_SOURCE(
350 	[
351 		#include <stdio.h>
352 		#include <stdlib.h>
353 		extern char *__progname;
354 		int main(void) {
355 			const char *cp = __progname;
356 			printf("%s\n", cp);
357 			exit(0);
358 		}
359 	])],
360 	[AC_DEFINE(HAVE___PROGNAME) AC_MSG_RESULT(yes)],
361 	AC_MSG_RESULT(no)
362 )
363 
364 if test "$PLATFORM" = "linux"; then
365 	PKG_CHECK_MODULES(
366 		LIBPANELW,
367 		panelw,
368 		found_panel=yes,
369 		AC_MSG_ERROR("*** couldn't find -lpanel from ncurses")
370 	)
371 else
372 	AC_CHECK_LIB(panelw, update_panels,,
373 		AC_MSG_ERROR([ "*** panelw not found for ncurses. ***"])
374 	)
375 
376 	LIBPANELW_LIBS="-lpanelw"
377 fi
378 
379 PKG_CHECK_MODULES(
380 	LIBNCURSES,
381 	ncursesw,
382 	found_ncurses=yes,
383 	found_ncurses=no
384 )
385 if test "x$found_ncurses" = xyes; then
386 	AM_CFLAGS="$LIBNCURSES_CFLAGS $LIBTINFO_CFLAGS $LIBPANELW_CFLAGS $AM_CFLAGS"
387 	CFLAGS="$LIBNCURSES_CFLAGS $LIBTINFO_CFLAGS $LIBPANELW_CFLAGS $CFLAGS"
388 	LIBS="$LIBNCURSES_LIBS $LIBTINFO_LIBS $LIBPANELW_LIBS $LIBS"
389 else
390 	AC_CHECK_LIB(
391 		ncursesw,
392 		setupterm,
393 		found_ncurses=yes,
394 		found_ncurses=no
395 	)
396 	if test "x$found_ncurses" = xyes; then
397 		AC_CHECK_HEADER(
398 			ncurses.h,
399 			AM_CFLAGS="$LIBPANELW_CFLAGS $AM_CFLAGS"
400 			CFLAGS="$LIBPANEL_CFLAGS $CFLAGS"
401 			LIBS="$LIBS -lncursesw $LIBPANELW_LIBS",
402 			found_ncurses=no
403 		)
404 	fi
405 fi
406 if test "x$found_ncurses" = xyes; then
407 	AC_DEFINE(HAVE_NCURSES_H)
408 else
409 	# No ncurses, try curses.
410 	AC_CHECK_LIB(
411 		cursesw,
412 		setupterm,
413 		found_curses=yes,
414 		found_curses=no
415 	)
416 	AC_CHECK_HEADER(
417 		curses.h,
418 		,
419 		found_curses=no)
420 	if test "x$found_curses" = xyes; then
421 		AM_CFLAGS="$LIBPANELW_CFLAGS $AM_CFLAGS"
422 		CFLAGS="$LIBPANEL_CFLAGS $CFLAGS"
423 		LIBS="$LIBS -lcursesw $LIBPANELW_LIBS"
424 		AC_DEFINE(HAVE_CURSES_H)
425 	else
426 		AC_MSG_ERROR("curses not found")
427 	fi
428 fi
429 
430 # Save our CFLAGS/CPPFLAGS/LDFLAGS for the Makefile and restore the old user
431 # variables.
432 AC_SUBST(AM_CPPFLAGS)
433 CPPFLAGS="$SAVED_CPPFLAGS"
434 AC_SUBST(AM_CFLAGS)
435 CFLAGS="$SAVED_CFLAGS"
436 AC_SUBST(AM_LDFLAGS)
437 LDFLAGS="$SAVED_LDFLAGS"
438 
439 AC_CONFIG_FILES([Makefile
440 		 compat/Makefile
441 		 libexec/Makefile
442 		 libexec/got-read-tree/Makefile
443 		 libexec/got-fetch-pack/Makefile
444 		 libexec/got-index-pack/Makefile
445 		 libexec/got-read-blob/Makefile
446 		 libexec/got-read-commit/Makefile
447 		 libexec/got-read-gitconfig/Makefile
448 		 libexec/got-read-gotconfig/Makefile
449 		 libexec/got-read-object/Makefile
450 		 libexec/got-read-pack/Makefile
451 		 libexec/got-read-tag/Makefile
452 		 libexec/got-send-pack/Makefile
453 		 got/Makefile
454 		 gotadmin/Makefile
455 		 tog/Makefile
456 		 regress/cmdline/Makefile.linux:regress/cmdline/Makefile.am])
457 AC_OUTPUT
458 
459 #                tog/GNUMakefile])
460 #                regress/GNUMakefile
461 #                regress/cmdline/GNUMakefile
462 #                regress/delta/GNUMakefile
463 #                regress/fetch/GNUMakefile
464 #                regress/idset/GNUMakefile
465 #                regress/path/GNUMakefile
466 #                 gotweb/GNUMakefile
467 #                 gotweb/libexec/GNUMakefile
468 #                 gotweb/libexec/got-read-blob/GNUMakefile
469 #                 gotweb/libexec/got-read-commit/GNUMakefile
470 #                 gotweb/libexec/got-read-gitconfig/GNUMakefile
471 #                 gotweb/libexec/got-read-gotconfig/GNUMakefile
472 #                 gotweb/libexec/got-read-object/GNUMakefile
473 #                 gotweb/libexec/got-read-pack/GNUMakefile
474 #                 gotweb/libexec/got-read-tag/GNUMakefile
475 #                 gotweb/libexec/got-read-tree/GNUMakefile