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1dnl configure.in for libevent
2dnl Dug Song <dugsong@monkey.org>
3AC_INIT(event.c)
4
5AM_INIT_AUTOMAKE(libevent,1.4.13-stable)
6AM_CONFIG_HEADER(config.h)
7dnl AM_MAINTAINER_MODE
8
9dnl Initialize prefix.
10if test "$prefix" = "NONE"; then
11   prefix="/usr/local"
12fi
13
14dnl Checks for programs.
15AC_PROG_CC
16AC_PROG_INSTALL
17AC_PROG_LN_S
18
19AC_PROG_GCC_TRADITIONAL
20if test "$GCC" = yes ; then
21        CFLAGS="$CFLAGS -Wall"
22        # And disable the strict-aliasing optimization, since it breaks
23        # our sockaddr-handling code in strange ways.
24        CFLAGS="$CFLAGS -fno-strict-aliasing"
25fi
26
27AC_ARG_ENABLE(gcc-warnings,
28     AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings with GCC))
29
30AC_PROG_LIBTOOL
31
32dnl   Uncomment "AC_DISABLE_SHARED" to make shared librraries not get
33dnl   built by default.  You can also turn shared libs on and off from
34dnl   the command line with --enable-shared and --disable-shared.
35dnl AC_DISABLE_SHARED
36AC_SUBST(LIBTOOL_DEPS)
37
38dnl Checks for libraries.
39AC_CHECK_LIB(socket, socket)
40AC_CHECK_LIB(resolv, inet_aton)
41AC_CHECK_LIB(rt, clock_gettime)
42AC_CHECK_LIB(nsl, inet_ntoa)
43
44dnl Checks for header files.
45AC_HEADER_STDC
46AC_CHECK_HEADERS(fcntl.h stdarg.h inttypes.h stdint.h poll.h signal.h unistd.h sys/epoll.h sys/time.h sys/queue.h sys/event.h sys/param.h sys/ioctl.h sys/select.h sys/devpoll.h port.h netinet/in6.h sys/socket.h)
47if test "x$ac_cv_header_sys_queue_h" = "xyes"; then
48	AC_MSG_CHECKING(for TAILQ_FOREACH in sys/queue.h)
49	AC_EGREP_CPP(yes,
50[
51#include <sys/queue.h>
52#ifdef TAILQ_FOREACH
53 yes
54#endif
55],	[AC_MSG_RESULT(yes)
56	 AC_DEFINE(HAVE_TAILQFOREACH, 1,
57		[Define if TAILQ_FOREACH is defined in <sys/queue.h>])],
58	AC_MSG_RESULT(no)
59	)
60fi
61
62if test "x$ac_cv_header_sys_time_h" = "xyes"; then
63	AC_MSG_CHECKING(for timeradd in sys/time.h)
64	AC_EGREP_CPP(yes,
65[
66#include <sys/time.h>
67#ifdef timeradd
68 yes
69#endif
70],	[ AC_DEFINE(HAVE_TIMERADD, 1,
71		[Define if timeradd is defined in <sys/time.h>])
72	  AC_MSG_RESULT(yes)] ,AC_MSG_RESULT(no)
73)
74fi
75
76if test "x$ac_cv_header_sys_time_h" = "xyes"; then
77	AC_MSG_CHECKING(for timercmp in sys/time.h)
78	AC_EGREP_CPP(yes,
79[
80#include <sys/time.h>
81#ifdef timercmp
82 yes
83#endif
84],	[ AC_DEFINE(HAVE_TIMERCMP, 1,
85		[Define if timercmp is defined in <sys/time.h>])
86	  AC_MSG_RESULT(yes)] ,AC_MSG_RESULT(no)
87)
88fi
89
90if test "x$ac_cv_header_sys_time_h" = "xyes"; then
91	AC_MSG_CHECKING(for timerclear in sys/time.h)
92	AC_EGREP_CPP(yes,
93[
94#include <sys/time.h>
95#ifdef timerclear
96 yes
97#endif
98],	[ AC_DEFINE(HAVE_TIMERCLEAR, 1,
99		[Define if timerclear is defined in <sys/time.h>])
100	  AC_MSG_RESULT(yes)] ,AC_MSG_RESULT(no)
101)
102fi
103
104if test "x$ac_cv_header_sys_time_h" = "xyes"; then
105	AC_MSG_CHECKING(for timerisset in sys/time.h)
106	AC_EGREP_CPP(yes,
107[
108#include <sys/time.h>
109#ifdef timerisset
110 yes
111#endif
112],	[ AC_DEFINE(HAVE_TIMERISSET, 1,
113		[Define if timerisset is defined in <sys/time.h>])
114	  AC_MSG_RESULT(yes)] ,AC_MSG_RESULT(no)
115)
116fi
117
118dnl - check if the macro WIN32 is defined on this compiler.
119dnl - (this is how we check for a windows version of GCC)
120AC_MSG_CHECKING(for WIN32)
121AC_TRY_COMPILE(,
122	[
123#ifndef WIN32
124die horribly
125#endif
126	],
127	bwin32=true; AC_MSG_RESULT(yes),
128	bwin32=false; AC_MSG_RESULT(no),
129)
130
131AM_CONDITIONAL(BUILD_WIN32, test x$bwin32 = xtrue)
132
133dnl Checks for typedefs, structures, and compiler characteristics.
134AC_C_CONST
135AC_C_INLINE
136AC_HEADER_TIME
137
138dnl Checks for library functions.
139AC_CHECK_FUNCS(gettimeofday vasprintf fcntl clock_gettime strtok_r strsep getaddrinfo getnameinfo strlcpy inet_ntop signal sigaction strtoll issetugid geteuid getegid)
140
141AC_CHECK_SIZEOF(long)
142
143if test "x$ac_cv_func_clock_gettime" = "xyes"; then
144   AC_DEFINE(DNS_USE_CPU_CLOCK_FOR_ID, 1, [Define if clock_gettime is available in libc])
145else
146   AC_DEFINE(DNS_USE_GETTIMEOFDAY_FOR_ID, 1, [Define is no secure id variant is available])
147fi
148
149AC_MSG_CHECKING(for F_SETFD in fcntl.h)
150AC_EGREP_CPP(yes,
151[
152#define _GNU_SOURCE
153#include <fcntl.h>
154#ifdef F_SETFD
155yes
156#endif
157],	[ AC_DEFINE(HAVE_SETFD, 1,
158	      [Define if F_SETFD is defined in <fcntl.h>])
159	  AC_MSG_RESULT(yes) ], AC_MSG_RESULT(no))
160
161needsignal=no
162haveselect=no
163AC_CHECK_FUNCS(select, [haveselect=yes], )
164if test "x$haveselect" = "xyes" ; then
165	AC_LIBOBJ(select)
166	needsignal=yes
167fi
168
169havepoll=no
170AC_CHECK_FUNCS(poll, [havepoll=yes], )
171if test "x$havepoll" = "xyes" ; then
172	AC_LIBOBJ(poll)
173	needsignal=yes
174fi
175
176haveepoll=no
177AC_CHECK_FUNCS(epoll_ctl, [haveepoll=yes], )
178if test "x$haveepoll" = "xyes" ; then
179	AC_DEFINE(HAVE_EPOLL, 1,
180		[Define if your system supports the epoll system calls])
181	AC_LIBOBJ(epoll)
182	needsignal=yes
183fi
184
185havedevpoll=no
186if test "x$ac_cv_header_sys_devpoll_h" = "xyes"; then
187	AC_DEFINE(HAVE_DEVPOLL, 1,
188		    [Define if /dev/poll is available])
189        AC_LIBOBJ(devpoll)
190fi
191
192havekqueue=no
193if test "x$ac_cv_header_sys_event_h" = "xyes"; then
194	AC_CHECK_FUNCS(kqueue, [havekqueue=yes], )
195	if test "x$havekqueue" = "xyes" ; then
196		AC_MSG_CHECKING(for working kqueue)
197		AC_TRY_RUN(
198#include <sys/types.h>
199#include <sys/time.h>
200#include <sys/event.h>
201#include <stdio.h>
202#include <unistd.h>
203#include <fcntl.h>
204
205int
206main(int argc, char **argv)
207{
208	int kq;
209	int n;
210	int fd[[2]];
211	struct kevent ev;
212	struct timespec ts;
213	char buf[[8000]];
214
215	if (pipe(fd) == -1)
216		exit(1);
217	if (fcntl(fd[[1]], F_SETFL, O_NONBLOCK) == -1)
218		exit(1);
219
220	while ((n = write(fd[[1]], buf, sizeof(buf))) == sizeof(buf))
221		;
222
223        if ((kq = kqueue()) == -1)
224		exit(1);
225
226	ev.ident = fd[[1]];
227	ev.filter = EVFILT_WRITE;
228	ev.flags = EV_ADD | EV_ENABLE;
229	n = kevent(kq, &ev, 1, NULL, 0, NULL);
230	if (n == -1)
231		exit(1);
232
233	read(fd[[0]], buf, sizeof(buf));
234
235	ts.tv_sec = 0;
236	ts.tv_nsec = 0;
237	n = kevent(kq, NULL, 0, &ev, 1, &ts);
238	if (n == -1 || n == 0)
239		exit(1);
240
241	exit(0);
242}, [AC_MSG_RESULT(yes)
243    AC_DEFINE(HAVE_WORKING_KQUEUE, 1,
244		[Define if kqueue works correctly with pipes])
245    AC_LIBOBJ(kqueue)], AC_MSG_RESULT(no), AC_MSG_RESULT(no))
246	fi
247fi
248
249haveepollsyscall=no
250if test "x$ac_cv_header_sys_epoll_h" = "xyes"; then
251	if test "x$haveepoll" = "xno" ; then
252		AC_MSG_CHECKING(for epoll system call)
253		AC_TRY_RUN(
254#include <stdint.h>
255#include <sys/param.h>
256#include <sys/types.h>
257#include <sys/syscall.h>
258#include <sys/epoll.h>
259#include <unistd.h>
260
261int
262epoll_create(int size)
263{
264	return (syscall(__NR_epoll_create, size));
265}
266
267int
268main(int argc, char **argv)
269{
270	int epfd;
271
272	epfd = epoll_create(256);
273	exit (epfd == -1 ? 1 : 0);
274}, [AC_MSG_RESULT(yes)
275    AC_DEFINE(HAVE_EPOLL, 1,
276	[Define if your system supports the epoll system calls])
277    needsignal=yes
278    AC_LIBOBJ(epoll_sub)
279    AC_LIBOBJ(epoll)], AC_MSG_RESULT(no), AC_MSG_RESULT(no))
280	fi
281fi
282
283haveeventports=no
284AC_CHECK_FUNCS(port_create, [haveeventports=yes], )
285if test "x$haveeventports" = "xyes" ; then
286	AC_DEFINE(HAVE_EVENT_PORTS, 1,
287		[Define if your system supports event ports])
288	AC_LIBOBJ(evport)
289	needsignal=yes
290fi
291if test "x$bwin32" = "xtrue"; then
292	needsignal=yes
293fi
294if test "x$bwin32" = "xtrue"; then
295	needsignal=yes
296fi
297if test "x$needsignal" = "xyes" ; then
298	AC_LIBOBJ(signal)
299fi
300
301AC_TYPE_PID_T
302AC_TYPE_SIZE_T
303AC_CHECK_TYPES([uint64_t, uint32_t, uint16_t, uint8_t], , ,
304[#ifdef HAVE_STDINT_H
305#include <stdint.h>
306#elif defined(HAVE_INTTYPES_H)
307#include <inttypes.h>
308#endif
309#ifdef HAVE_SYS_TYPES_H
310#include <sys/types.h>
311#endif])
312AC_CHECK_TYPES([fd_mask], , ,
313[#ifdef HAVE_SYS_TYPES_H
314#include <sys/types.h>
315#endif
316#ifdef HAVE_SELECT_H
317#include <select.h>
318#endif])
319
320AC_CHECK_SIZEOF(long long)
321AC_CHECK_SIZEOF(int)
322AC_CHECK_SIZEOF(short)
323AC_CHECK_TYPES([struct in6_addr], , ,
324[#ifdef WIN32
325#include <winsock2.h>
326#else
327#include <sys/types.h>
328#include <netinet/in.h>
329#include <sys/socket.h>
330#endif
331#ifdef HAVE_NETINET_IN6_H
332#include <netinet/in6.h>
333#endif])
334
335AC_MSG_CHECKING([for socklen_t])
336AC_TRY_COMPILE([
337 #include <sys/types.h>
338 #include <sys/socket.h>],
339  [socklen_t x;],
340  AC_MSG_RESULT([yes]),
341  [AC_MSG_RESULT([no])
342  AC_DEFINE(socklen_t, unsigned int,
343	[Define to unsigned int if you dont have it])]
344)
345
346AC_MSG_CHECKING([whether our compiler supports __func__])
347AC_TRY_COMPILE([],
348 [ const char *cp = __func__; ],
349 AC_MSG_RESULT([yes]),
350 AC_MSG_RESULT([no])
351 AC_MSG_CHECKING([whether our compiler supports __FUNCTION__])
352 AC_TRY_COMPILE([],
353   [ const char *cp = __FUNCTION__; ],
354   AC_MSG_RESULT([yes])
355   AC_DEFINE(__func__, __FUNCTION__,
356         [Define to appropriate substitue if compiler doesnt have __func__]),
357   AC_MSG_RESULT([no])
358   AC_DEFINE(__func__, __FILE__,
359         [Define to appropriate substitue if compiler doesnt have __func__])))
360
361
362# Add some more warnings which we use in development but not in the
363# released versions.  (Some relevant gcc versions can't handle these.)
364if test x$enable_gcc_warnings = xyes; then
365
366  AC_COMPILE_IFELSE(AC_LANG_PROGRAM([], [
367#if !defined(__GNUC__) || (__GNUC__ < 4)
368#error
369#endif]), have_gcc4=yes, have_gcc4=no)
370
371  AC_COMPILE_IFELSE(AC_LANG_PROGRAM([], [
372#if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
373#error
374#endif]), have_gcc42=yes, have_gcc42=no)
375
376  CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2 -Wwrite-strings -Wmissing-declarations -Wredundant-decls -Wnested-externs -Wbad-function-cast -Wswitch-enum -Werror"
377  CFLAGS="$CFLAGS -Wno-unused-parameter -Wno-sign-compare -Wstrict-aliasing"
378
379  if test x$have_gcc4 = xyes ; then
380    # These warnings break gcc 3.3.5 and work on gcc 4.0.2
381    CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wdeclaration-after-statement"
382    #CFLAGS="$CFLAGS -Wold-style-definition"
383  fi
384
385  if test x$have_gcc42 = xyes ; then
386    # These warnings break gcc 4.0.2 and work on gcc 4.2
387    CFLAGS="$CFLAGS -Waddress -Wnormalized=id -Woverride-init"
388  fi
389
390##This will break the world on some 64-bit architectures
391# CFLAGS="$CFLAGS -Winline"
392
393fi
394
395AC_OUTPUT(Makefile test/Makefile sample/Makefile)
396