acinclude.m4

Revision 1692, 15.3 kB (checked in by alo, 1 month ago)
--

Line
1	AC_DEFUN([ACX_PTHREAD], [
2	AC_REQUIRE([AC_CANONICAL_HOST])
3	AC_LANG_SAVE
4	AC_LANG_C
5	acx_pthread_ok=no
6
7	# We used to check for pthread.h first, but this fails if pthread.h
8	# requires special compiler flags (e.g. on True64 or Sequent).
9	# It gets checked for in the link test anyway.
10
11	# First of all, check if the user has set any of the PTHREAD_LIBS,
12	# etcetera environment variables, and if threads linking works using
13	# them:
14	if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
15	save_CFLAGS="$CFLAGS"
16	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
17	save_LIBS="$LIBS"
18	LIBS="$PTHREAD_LIBS $LIBS"
19	AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
20	AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
21	AC_MSG_RESULT($acx_pthread_ok)
22	if test x"$acx_pthread_ok" = xno; then
23	PTHREAD_LIBS=""
24	PTHREAD_CFLAGS=""
25	fi
26	LIBS="$save_LIBS"
27	CFLAGS="$save_CFLAGS"
28	fi
29
30	# We must check for the threads library under a number of different
31	# names; the ordering is very important because some systems
32	# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
33	# libraries is broken (non-POSIX).
34
35	# Create a list of thread flags to try. Items starting with a "-" are
36	# C compiler flags, and other items are library names, except for "none"
37	# which indicates that we try without any flags at all.
38
39	acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt"
40
41	# The ordering is (sometimes) important. Some notes on the
42	# individual items follow:
43
44	# pthreads: AIX (must check this before -lpthread)
45	# none: in case threads are in libc; should be tried before -Kthread and
46	# other compiler flags to prevent continual compiler warnings
47	# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
48	# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
49	# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
50	# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
51	# -pthreads: Solaris/gcc
52	# -mthreads: Mingw32/gcc, Lynx/gcc
53	# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
54	# doesn't hurt to check since this sometimes defines pthreads too;
55	# also defines -D_REENTRANT)
56	# pthread: Linux, etcetera
57	# --thread-safe: KAI C++
58
59	case "${host_cpu}-${host_os}" in
60	solaris)
61
62	# On Solaris (at least, for some versions), libc contains stubbed
63	# (non-functional) versions of the pthreads routines, so link-based
64	# tests will erroneously succeed. (We need to link with -pthread or
65	# -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
66	# a function called by this macro, so we could check for that, but
67	# who knows whether they'll stub that too in a future libc.) So,
68	# we'll just look for -pthreads and -lpthread first:
69
70	acx_pthread_flags="-pthread -pthreads pthread -mt $acx_pthread_flags"
71	;;
72	esac
73
74	if test x"$acx_pthread_ok" = xno; then
75	for flag in $acx_pthread_flags; do
76
77	case $flag in
78	none)
79	AC_MSG_CHECKING([whether pthreads work without any flags])
80	;;
81
82	-*)
83	AC_MSG_CHECKING([whether pthreads work with $flag])
84	PTHREAD_CFLAGS="$flag"
85	;;
86
87	*)
88	AC_MSG_CHECKING([for the pthreads library -l$flag])
89	PTHREAD_LIBS="-l$flag"
90	;;
91	esac
92
93	save_LIBS="$LIBS"
94	save_CFLAGS="$CFLAGS"
95	LIBS="$PTHREAD_LIBS $LIBS"
96	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
97
98	# Check for various functions. We must include pthread.h,
99	# since some functions may be macros. (On the Sequent, we
100	# need a special flag -Kthread to make this header compile.)
101	# We check for pthread_join because it is in -lpthread on IRIX
102	# while pthread_create is in libc. We check for pthread_attr_init
103	# due to DEC craziness with -lpthreads. We check for
104	# pthread_cleanup_push because it is one of the few pthread
105	# functions on Solaris that doesn't have a non-functional libc stub.
106	# We try pthread_create on general principles.
107	AC_TRY_LINK([#include <pthread.h>],
108	[pthread_t th; pthread_join(th, 0);
109	pthread_attr_init(0); pthread_cleanup_push(0, 0);
110	pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
111	[acx_pthread_ok=yes])
112
113	LIBS="$save_LIBS"
114	CFLAGS="$save_CFLAGS"
115
116	AC_MSG_RESULT($acx_pthread_ok)
117	if test "x$acx_pthread_ok" = xyes; then
118	break;
119	fi
120
121	PTHREAD_LIBS=""
122	PTHREAD_CFLAGS=""
123	done
124	fi
125
126	# Various other checks:
127	if test "x$acx_pthread_ok" = xyes; then
128	save_LIBS="$LIBS"
129	LIBS="$PTHREAD_LIBS $LIBS"
130	save_CFLAGS="$CFLAGS"
131	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
132
133	# Detect AIX lossage: threads are created detached by default
134	# and the JOINABLE attribute has a nonstandard name (UNDETACHED).
135	AC_MSG_CHECKING([for joinable pthread attribute])
136	AC_TRY_LINK([#include <pthread.h>],
137	[int attr=PTHREAD_CREATE_JOINABLE;],
138	ok=PTHREAD_CREATE_JOINABLE, ok=unknown)
139	if test x"$ok" = xunknown; then
140	AC_TRY_LINK([#include <pthread.h>],
141	[int attr=PTHREAD_CREATE_UNDETACHED;],
142	ok=PTHREAD_CREATE_UNDETACHED, ok=unknown)
143	fi
144	if test x"$ok" != xPTHREAD_CREATE_JOINABLE; then
145	AC_DEFINE(PTHREAD_CREATE_JOINABLE, $ok,
146	[Define to the necessary symbol if this constant
147	uses a non-standard name on your system.])
148	fi
149	AC_MSG_RESULT(${ok})
150	if test x"$ok" = xunknown; then
151	AC_MSG_WARN([we do not know how to create joinable pthreads])
152	fi
153
154	AC_MSG_CHECKING([if more special flags are required for pthreads])
155	flag=no
156	case "${host_cpu}-${host_os}" in
157	-aix \| -freebsd) flag="-D_THREAD_SAFE";;
158	solaris \| -osf \| -hpux) flag="-D_REENTRANT";;
159	esac
160	AC_MSG_RESULT(${flag})
161	if test "x$flag" != xno; then
162	PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
163	fi
164
165	LIBS="$save_LIBS"
166	CFLAGS="$save_CFLAGS"
167
168	# More AIX lossage: must compile with cc_r
169	AC_CHECK_PROG(PTHREAD_CC, cc_r, cc_r, ${CC})
170	else
171	PTHREAD_CC="$CC"
172	fi
173
174	AC_SUBST(PTHREAD_LIBS)
175	AC_SUBST(PTHREAD_CFLAGS)
176	AC_SUBST(PTHREAD_CC)
177
178	# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
179	if test x"$acx_pthread_ok" = xyes; then
180	ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
181	:
182	else
183	acx_pthread_ok=no
184	$2
185	fi
186	AC_LANG_RESTORE
187	])dnl ACX_PTHREAD
188
189
190
191
192	AC_DEFUN([SAMBA_SENDFILE], [
193
194	#################################################
195	# check for sendfile support
196
197	with_sendfile_support=yes
198	AC_MSG_CHECKING(whether to check to support sendfile)
199	AC_ARG_WITH(sendfile-support,
200	[ --with-sendfile-support Check for sendfile support (default=yes)],
201	[ case "$withval" in
202	yes)
203
204	AC_MSG_RESULT(yes);
205
206	case "$host_os" in
207	linux)
208	AC_CACHE_CHECK([for linux sendfile64 support],samba_cv_HAVE_SENDFILE64,[
209	AC_TRY_LINK([#include <sys/sendfile.h>],
210	[\
211	int tofd, fromfd;
212	off64_t offset;
213	size_t total;
214	ssize_t nwritten = sendfile64(tofd, fromfd, &offset, total);
215	],
216	samba_cv_HAVE_SENDFILE64=yes,samba_cv_HAVE_SENDFILE64=no)])
217
218	AC_CACHE_CHECK([for linux sendfile support],samba_cv_HAVE_SENDFILE,[
219	AC_TRY_LINK([#include <sys/sendfile.h>],
220	[\
221	int tofd, fromfd;
222	off_t offset;
223	size_t total;
224	ssize_t nwritten = sendfile(tofd, fromfd, &offset, total);
225	],
226	samba_cv_HAVE_SENDFILE=yes,samba_cv_HAVE_SENDFILE=no)])
227
228	# Try and cope with broken Linux sendfile....
229	AC_CACHE_CHECK([for broken linux sendfile support],samba_cv_HAVE_BROKEN_LINUX_SENDFILE,[
230	AC_TRY_LINK([\
231	#if defined(_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
232	#undef _FILE_OFFSET_BITS
233	#endif
234	#include <sys/sendfile.h>],
235	[\
236	int tofd, fromfd;
237	off_t offset;
238	size_t total;
239	ssize_t nwritten = sendfile(tofd, fromfd, &offset, total);
240	],
241	samba_cv_HAVE_BROKEN_LINUX_SENDFILE=yes,samba_cv_HAVE_BROKEN_LINUX_SENDFILE=no)])
242
243	if test x"$samba_cv_HAVE_SENDFILE64" = x"yes"; then
244	AC_DEFINE(HAVE_SENDFILE64,1,[Whether 64-bit sendfile() is available])
245	AC_DEFINE(LINUX_SENDFILE_API,1,[Whether linux sendfile() API is available])
246	AC_DEFINE(WITH_SENDFILE,1,[Whether sendfile() should be used])
247	elif test x"$samba_cv_HAVE_SENDFILE" = x"yes"; then
248	AC_DEFINE(HAVE_SENDFILE,1,[Whether sendfile() is available])
249	AC_DEFINE(LINUX_SENDFILE_API,1,[Whether linux sendfile() API is available])
250	AC_DEFINE(WITH_SENDFILE,1,[Whether sendfile() should be used])
251	elif test x"$samba_cv_HAVE_BROKEN_LINUX_SENDFILE" = x"yes"; then
252	AC_DEFINE(LINUX_BROKEN_SENDFILE_API,1,[Whether (linux) sendfile() is broken])
253	AC_DEFINE(WITH_SENDFILE,1,[Whether sendfile should be used])
254	else
255	AC_MSG_RESULT(no);
256	fi
257
258	;;
259	freebsd)
260	AC_CACHE_CHECK([for freebsd sendfile support],samba_cv_HAVE_SENDFILE,[
261	AC_TRY_LINK([\
262	#include <sys/types.h>
263	#include <unistd.h>
264	#include <sys/socket.h>
265	#include <sys/uio.h>],
266	[\
267	int fromfd, tofd, ret, total=0;
268	off_t offset, nwritten;
269	struct sf_hdtr hdr;
270	struct iovec hdtrl;
271	hdr.headers = &hdtrl;
272	hdr.hdr_cnt = 1;
273	hdr.trailers = NULL;
274	hdr.trl_cnt = 0;
275	hdtrl.iov_base = NULL;
276	hdtrl.iov_len = 0;
277	ret = sendfile(fromfd, tofd, offset, total, &hdr, &nwritten, 0);
278	],
279	samba_cv_HAVE_SENDFILE=yes,samba_cv_HAVE_SENDFILE=no)])
280
281	if test x"$samba_cv_HAVE_SENDFILE" = x"yes"; then
282	AC_DEFINE(HAVE_SENDFILE,1,[Whether sendfile() support is available])
283	AC_DEFINE(FREEBSD_SENDFILE_API,1,[Whether the FreeBSD sendfile() API is available])
284	AC_DEFINE(WITH_SENDFILE,1,[Whether sendfile() support should be included])
285	else
286	AC_MSG_RESULT(no);
287	fi
288	;;
289
290	hpux)
291	AC_CACHE_CHECK([for hpux sendfile64 support],samba_cv_HAVE_SENDFILE64,[
292	AC_TRY_LINK([\
293	#include <sys/socket.h>
294	#include <sys/uio.h>],
295	[\
296	int fromfd, tofd;
297	size_t total=0;
298	struct iovec hdtrl[2];
299	ssize_t nwritten;
300	off64_t offset;
301
302	hdtrl[0].iov_base = 0;
303	hdtrl[0].iov_len = 0;
304
305	nwritten = sendfile64(tofd, fromfd, offset, total, &hdtrl[0], 0);
306	],
307	samba_cv_HAVE_SENDFILE64=yes,samba_cv_HAVE_SENDFILE64=no)])
308	if test x"$samba_cv_HAVE_SENDFILE64" = x"yes"; then
309	AC_DEFINE(HAVE_SENDFILE64,1,[Whether sendfile64() is available])
310	AC_DEFINE(HPUX_SENDFILE_API,1,[Whether the hpux sendfile() API is available])
311	AC_DEFINE(WITH_SENDFILE,1,[Whether sendfile() support should be included])
312	else
313	AC_MSG_RESULT(no);
314	fi
315
316	AC_CACHE_CHECK([for hpux sendfile support],samba_cv_HAVE_SENDFILE,[
317	AC_TRY_LINK([\
318	#include <sys/socket.h>
319	#include <sys/uio.h>],
320	[\
321	int fromfd, tofd;
322	size_t total=0;
323	struct iovec hdtrl[2];
324	ssize_t nwritten;
325	off_t offset;
326
327	hdtrl[0].iov_base = 0;
328	hdtrl[0].iov_len = 0;
329
330	nwritten = sendfile(tofd, fromfd, offset, total, &hdtrl[0], 0);
331	],
332	samba_cv_HAVE_SENDFILE=yes,samba_cv_HAVE_SENDFILE=no)])
333	if test x"$samba_cv_HAVE_SENDFILE" = x"yes"; then
334	AC_DEFINE(HAVE_SENDFILE,1,[Whether sendfile() is available])
335	AC_DEFINE(HPUX_SENDFILE_API,1,[Whether the hpux sendfile() API is available])
336	AC_DEFINE(WITH_SENDFILE,1,[Whether sendfile() support should be included])
337	else
338	AC_MSG_RESULT(no);
339	fi
340	;;
341
342	solaris)
343	AC_CHECK_LIB(sendfile,sendfilev)
344	AC_CACHE_CHECK([for solaris sendfilev64 support],samba_cv_HAVE_SENDFILEV64,[
345	AC_TRY_LINK([\
346	#include <sys/sendfile.h>],
347	[\
348	int sfvcnt;
349	size_t xferred;
350	struct sendfilevec vec[2];
351	ssize_t nwritten;
352	int tofd;
353
354	sfvcnt = 2;
355
356	vec[0].sfv_fd = SFV_FD_SELF;
357	vec[0].sfv_flag = 0;
358	vec[0].sfv_off = 0;
359	vec[0].sfv_len = 0;
360
361	vec[1].sfv_fd = 0;
362	vec[1].sfv_flag = 0;
363	vec[1].sfv_off = 0;
364	vec[1].sfv_len = 0;
365	nwritten = sendfilev64(tofd, vec, sfvcnt, &xferred);
366	],
367	samba_cv_HAVE_SENDFILEV64=yes,samba_cv_HAVE_SENDFILEV64=no)])
368
369	if test x"$samba_cv_HAVE_SENDFILEV64" = x"yes"; then
370	AC_DEFINE(HAVE_SENDFILEV64,1,[Whether sendfilev64() is available])
371	AC_DEFINE(SOLARIS_SENDFILE_API,1,[Whether the soloris sendfile() API is available])
372	AC_DEFINE(WITH_SENDFILE,1,[Whether sendfile() support should be included])
373	else
374	AC_MSG_RESULT(no);
375	fi
376
377	AC_CACHE_CHECK([for solaris sendfilev support],samba_cv_HAVE_SENDFILEV,[
378	AC_TRY_LINK([\
379	#include <sys/sendfile.h>],
380	[\
381	int sfvcnt;
382	size_t xferred;
383	struct sendfilevec vec[2];
384	ssize_t nwritten;
385	int tofd;
386
387	sfvcnt = 2;
388
389	vec[0].sfv_fd = SFV_FD_SELF;
390	vec[0].sfv_flag = 0;
391	vec[0].sfv_off = 0;
392	vec[0].sfv_len = 0;
393
394	vec[1].sfv_fd = 0;
395	vec[1].sfv_flag = 0;
396	vec[1].sfv_off = 0;
397	vec[1].sfv_len = 0;
398	nwritten = sendfilev(tofd, vec, sfvcnt, &xferred);
399	],
400	samba_cv_HAVE_SENDFILEV=yes,samba_cv_HAVE_SENDFILEV=no)])
401
402	if test x"$samba_cv_HAVE_SENDFILEV" = x"yes"; then
403	AC_DEFINE(HAVE_SENDFILEV,1,[Whether sendfilev() is available])
404	AC_DEFINE(SOLARIS_SENDFILE_API,1,[Whether the solaris sendfile() API is available])
405	AC_DEFINE(WITH_SENDFILE,1,[Whether to include sendfile() support])
406	else
407	AC_MSG_RESULT(no);
408	fi
409	;;
410
411	*)
412	;;
413	esac
414	;;
415	*)
416	AC_MSG_RESULT(no)
417	;;
418	esac ],
419	AC_MSG_RESULT(yes)
420	)
421
422	])
423
424
425
426
427	AC_DEFUN([HYDRA_TCP_CORK], [
428
429	AC_MSG_CHECKING([whether TCP_CORK is a valid TCP socket option])
430	AC_TRY_COMPILE(
431	#include <sys/socket.h>
432	#include <netinet/tcp.h>
433	#include <netinet/in.h>
434	,[
435	int one = 1, fd;
436	if (setsockopt(fd, IPPROTO_TCP, TCP_CORK,
437	(void *) &one, sizeof (one)) == -1)
438	return -1;
439	return 0;
440
441	],
442	dnl *** FOUND
443	AC_DEFINE( HAVE_TCP_CORK, 1, [TCP_CORK was found and will be used])
444	AC_MSG_RESULT(yes),
445	dnl *** NOT FOUND
446	AC_MSG_RESULT(no)
447	)
448
449	])
450
451	AC_DEFUN([HYDRA_TCP_NOPUSH], [
452
453	AC_MSG_CHECKING([whether TCP_NOPUSH is a valid TCP socket option])
454	AC_TRY_COMPILE(
455	#include <sys/socket.h>
456	#include <netinet/tcp.h>
457	#include <netinet/in.h>
458	,[
459	int one = 1, fd;
460	if (setsockopt(fd, IPPROTO_TCP, TCP_NOPUSH,
461	(void *) &one, sizeof (one)) == -1)
462	return -1;
463	return 0;
464
465	],
466	dnl *** FOUND
467	AC_DEFINE( HAVE_TCP_NOPUSH, 1, [TCP_NOPUSH was found and will be used])
468	AC_MSG_RESULT(yes),
469	dnl *** NOT FOUND
470	AC_MSG_RESULT(no)
471	)
472
473	])

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