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libevent/configure.in
Nick Mathewson fbaf0770a7 Fix bugs in posix thread-id calculation when sizeof(pthread_t) != sizeof(long) 
When pthread_t was smaller, our calculated thread IDs would include
uninitialized RAM, and so our unit tests would fail because thread_ids
would never match one another.

When pthread_t was larger and alignment was big-endian, our calculated
thread IDs would only have the most significant bytes of the
pthread_t, when in practice all the entropy is in the low-order bytes.

Found with help from Dagobert Michelsen.
2010-10-26 12:09:20 -04:00

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dnl configure.in for libevent
dnl Dug Song <dugsong@monkey.org>
AC_PREREQ(2.59c)
AC_INIT(event.c)
AC_CONFIG_MACRO_DIR([m4])
AM_INIT_AUTOMAKE(libevent,2.0.8-rc-dev)
AM_CONFIG_HEADER(config.h)
AC_DEFINE(NUMERIC_VERSION, 0x02000801, [Numeric representation of the version])
dnl Initialize prefix.
if test "$prefix" = "NONE"; then
prefix="/usr/local"
fi
dnl Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MKDIR_P
AC_PROG_GCC_TRADITIONAL
if test "$GCC" = "yes" ; then
# Enable many gcc warnings by default...
CFLAGS="$CFLAGS -Wall"
# And disable the strict-aliasing optimization, since it breaks
# our sockaddr-handling code in strange ways.
CFLAGS="$CFLAGS -fno-strict-aliasing"
fi
AC_ARG_ENABLE(gcc-warnings,
AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings with GCC))
AC_ARG_ENABLE(thread-support,
AS_HELP_STRING(--disable-thread-support, disable support for threading),
[], [enable_thread_support=yes])
AC_ARG_ENABLE(malloc-replacement,
AS_HELP_STRING(--disable-malloc-replacement, disable support for replacing the memory mgt functions),
[], [enable_malloc_replacement=yes])
AC_ARG_ENABLE(openssl,
AS_HELP_STRING(--disable-openssl, disable support for openssl encryption),
[], [enable_openssl=yes])
AC_ARG_ENABLE(debug-mode,
AS_HELP_STRING(--disable-debug-mode, disable support for running in debug mode),
[], [enable_debug_mode=yes])
AC_PROG_LIBTOOL
dnl Uncomment "AC_DISABLE_SHARED" to make shared librraries not get
dnl built by default. You can also turn shared libs on and off from
dnl the command line with --enable-shared and --disable-shared.
dnl AC_DISABLE_SHARED
AC_SUBST(LIBTOOL_DEPS)
dnl Checks for libraries.
AC_SEARCH_LIBS([inet_ntoa], [nsl])
AC_SEARCH_LIBS([socket], [socket])
AC_SEARCH_LIBS([inet_aton], [resolv])
AC_SEARCH_LIBS([clock_gettime], [rt])
AC_SEARCH_LIBS([sendfile], [sendfile])
dnl Determine if we have zlib for regression tests
dnl Don't put this one in LIBS
save_LIBS="$LIBS"
LIBS=""
ZLIB_LIBS=""
have_zlib=no
AC_SEARCH_LIBS([inflateEnd], [z],
[have_zlib=yes
ZLIB_LIBS="$LIBS"
AC_DEFINE(HAVE_LIBZ, 1, [Define if the system has zlib])])
LIBS="$save_LIBS"
AC_SUBST(ZLIB_LIBS)
AM_CONDITIONAL(ZLIB_REGRESS, [test "$have_zlib" = "yes"])
dnl See if we have openssl. This doesn't go in LIBS either.
if test "$enable_openssl" = "yes"; then
save_LIBS="$LIBS"
LIBS=""
OPENSSL_LIBS=""
have_openssl=no
AC_SEARCH_LIBS([SSL_new], [ssl],
[have_openssl=yes
OPENSSL_LIBS="$LIBS"
AC_DEFINE(HAVE_OPENSSL, 1, [Define if the system has openssl])])
LIBS="$save_LIBS"
AC_SUBST(OPENSSL_LIBS)
fi
dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(fcntl.h stdarg.h inttypes.h stdint.h stddef.h poll.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/in.h netinet/in6.h sys/socket.h sys/uio.h arpa/inet.h sys/eventfd.h sys/mman.h sys/sendfile.h sys/wait.h netdb.h)
AC_CHECK_HEADERS(sys/sysctl.h, [], [], [
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
])
if test "x$ac_cv_header_sys_queue_h" = "xyes"; then
AC_MSG_CHECKING(for TAILQ_FOREACH in sys/queue.h)
AC_EGREP_CPP(yes,
[
#include <sys/queue.h>
#ifdef TAILQ_FOREACH
yes
#endif
], [AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_TAILQFOREACH, 1,
[Define if TAILQ_FOREACH is defined in <sys/queue.h>])],
AC_MSG_RESULT(no)
)
fi
if test "x$ac_cv_header_sys_time_h" = "xyes"; then
AC_MSG_CHECKING(for timeradd in sys/time.h)
AC_EGREP_CPP(yes,
[
#include <sys/time.h>
#ifdef timeradd
yes
#endif
], [ AC_DEFINE(HAVE_TIMERADD, 1,
[Define if timeradd is defined in <sys/time.h>])
AC_MSG_RESULT(yes)] ,AC_MSG_RESULT(no)
)
fi
if test "x$ac_cv_header_sys_time_h" = "xyes"; then
AC_MSG_CHECKING(for timercmp in sys/time.h)
AC_EGREP_CPP(yes,
[
#include <sys/time.h>
#ifdef timercmp
yes
#endif
], [ AC_DEFINE(HAVE_TIMERCMP, 1,
[Define if timercmp is defined in <sys/time.h>])
AC_MSG_RESULT(yes)] ,AC_MSG_RESULT(no)
)
fi
if test "x$ac_cv_header_sys_time_h" = "xyes"; then
AC_MSG_CHECKING(for timerclear in sys/time.h)
AC_EGREP_CPP(yes,
[
#include <sys/time.h>
#ifdef timerclear
yes
#endif
], [ AC_DEFINE(HAVE_TIMERCLEAR, 1,
[Define if timerclear is defined in <sys/time.h>])
AC_MSG_RESULT(yes)] ,AC_MSG_RESULT(no)
)
fi
if test "x$ac_cv_header_sys_time_h" = "xyes"; then
AC_MSG_CHECKING(for timerisset in sys/time.h)
AC_EGREP_CPP(yes,
[
#include <sys/time.h>
#ifdef timerisset
yes
#endif
], [ AC_DEFINE(HAVE_TIMERISSET, 1,
[Define if timerisset is defined in <sys/time.h>])
AC_MSG_RESULT(yes)] ,AC_MSG_RESULT(no)
)
fi
if test "x$ac_cv_header_sys_sysctl_h" = "xyes"; then
AC_CHECK_DECLS([CTL_KERN, KERN_RANDOM, RANDOM_UUID, KERN_ARND], [], [],
[[#include <sys/types.h>
#include <sys/sysctl.h>]]
)
fi
dnl - check if the macro WIN32 is defined on this compiler.
dnl - (this is how we check for a windows version of GCC)
AC_MSG_CHECKING(for WIN32)
AC_TRY_COMPILE(,
[
#ifndef WIN32
die horribly
#endif
],
bwin32=true; AC_MSG_RESULT(yes),
bwin32=false; AC_MSG_RESULT(no),
)
AM_CONDITIONAL(BUILD_WIN32, test x$bwin32 = xtrue)
if test x$bwin32 = xtrue; then
AC_SEARCH_LIBS([getservbyname],[ws2_32])
fi
dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_HEADER_TIME
dnl Checks for library functions.
AC_CHECK_FUNCS(gettimeofday vasprintf fcntl clock_gettime strtok_r strsep getaddrinfo getnameinfo strlcpy inet_ntop inet_pton signal sigaction strtoll inet_aton pipe eventfd sendfile mmap splice arc4random arc4random_buf issetugid geteuid getegid getservbyname getprotobynumber setenv unsetenv putenv)
# Check for gethostbyname_r in all its glorious incompatible versions.
# (This is cut-and-pasted from Tor, which based its logic on
# Python's configure.in.)
AH_TEMPLATE(HAVE_GETHOSTBYNAME_R,
[Define this if you have any gethostbyname_r()])
AC_CHECK_FUNC(gethostbyname_r, [
AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
OLD_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
AC_COMPILE_IFELSE(AC_LANG_PROGRAM([
#include <netdb.h>
], [[
char *cp1, *cp2;
struct hostent *h1, *h2;
int i1, i2;
(void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
]]),[
AC_DEFINE(HAVE_GETHOSTBYNAME_R)
AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
[Define this if gethostbyname_r takes 6 arguments])
AC_MSG_RESULT(6)
], [
AC_TRY_COMPILE([
#include <netdb.h>
], [
char *cp1, *cp2;
struct hostent *h1;
int i1, i2;
(void)gethostbyname_r(cp1,h1,cp2,i1,&i2);
], [
AC_DEFINE(HAVE_GETHOSTBYNAME_R)
AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1,
[Define this if gethostbyname_r takes 5 arguments])
AC_MSG_RESULT(5)
], [
AC_TRY_COMPILE([
#include <netdb.h>
], [
char *cp1;
struct hostent *h1;
struct hostent_data hd;
(void) gethostbyname_r(cp1,h1,&hd);
], [
AC_DEFINE(HAVE_GETHOSTBYNAME_R)
AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1,
[Define this if gethostbyname_r takes 3 arguments])
AC_MSG_RESULT(3)
], [
AC_MSG_RESULT(0)
])
])
])
CFLAGS=$OLD_CFLAGS
])
AC_CHECK_SIZEOF(long)
AC_MSG_CHECKING(for F_SETFD in fcntl.h)
AC_EGREP_CPP(yes,
[
#define _GNU_SOURCE
#include <fcntl.h>
#ifdef F_SETFD
yes
#endif
], [ AC_DEFINE(HAVE_SETFD, 1,
[Define if F_SETFD is defined in <fcntl.h>])
AC_MSG_RESULT(yes) ], AC_MSG_RESULT(no))
needsignal=no
haveselect=no
if test x$bwin32 != xtrue; then
AC_CHECK_FUNCS(select, [haveselect=yes], )
if test "x$haveselect" = "xyes" ; then
needsignal=yes
fi
fi
AM_CONDITIONAL(SELECT_BACKEND, [test "x$haveselect" = "xyes"])
havepoll=no
AC_CHECK_FUNCS(poll, [havepoll=yes], )
if test "x$havepoll" = "xyes" ; then
needsignal=yes
fi
AM_CONDITIONAL(POLL_BACKEND, [test "x$havepoll" = "xyes"])
havedevpoll=no
if test "x$ac_cv_header_sys_devpoll_h" = "xyes"; then
AC_DEFINE(HAVE_DEVPOLL, 1,
[Define if /dev/poll is available])
fi
AM_CONDITIONAL(DEVPOLL_BACKEND, [test "x$ac_cv_header_sys_devpoll_h" = "xyes"])
havekqueue=no
if test "x$ac_cv_header_sys_event_h" = "xyes"; then
AC_CHECK_FUNCS(kqueue, [havekqueue=yes], )
if test "x$havekqueue" = "xyes" ; then
AC_MSG_CHECKING(for working kqueue)
AC_TRY_RUN(
#include <sys/types.h>
#include <sys/time.h>
#include <sys/event.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
int
main(int argc, char **argv)
{
int kq;
int n;
int fd[[2]];
struct kevent ev;
struct timespec ts;
char buf[[8000]];
if (pipe(fd) == -1)
exit(1);
if (fcntl(fd[[1]], F_SETFL, O_NONBLOCK) == -1)
exit(1);
while ((n = write(fd[[1]], buf, sizeof(buf))) == sizeof(buf))
;
if ((kq = kqueue()) == -1)
exit(1);
memset(&ev, 0, sizeof(ev));
ev.ident = fd[[1]];
ev.filter = EVFILT_WRITE;
ev.flags = EV_ADD | EV_ENABLE;
n = kevent(kq, &ev, 1, NULL, 0, NULL);
if (n == -1)
exit(1);
read(fd[[0]], buf, sizeof(buf));
ts.tv_sec = 0;
ts.tv_nsec = 0;
n = kevent(kq, NULL, 0, &ev, 1, &ts);
if (n == -1 || n == 0)
exit(1);
exit(0);
}, [AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_WORKING_KQUEUE, 1,
[Define if kqueue works correctly with pipes])
havekqueue=yes
], AC_MSG_RESULT(no), AC_MSG_RESULT(no))
fi
fi
AM_CONDITIONAL(KQUEUE_BACKEND, [test "x$havekqueue" = "xyes"])
haveepollsyscall=no
haveepoll=no
AC_CHECK_FUNCS(epoll_ctl, [haveepoll=yes], )
if test "x$haveepoll" = "xyes" ; then
AC_DEFINE(HAVE_EPOLL, 1,
[Define if your system supports the epoll system calls])
needsignal=yes
fi
if test "x$ac_cv_header_sys_epoll_h" = "xyes"; then
if test "x$haveepoll" = "xno" ; then
AC_MSG_CHECKING(for epoll system call)
AC_TRY_RUN(
#include <stdint.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/syscall.h>
#include <sys/epoll.h>
#include <unistd.h>
int
epoll_create(int size)
{
return (syscall(__NR_epoll_create, size));
}
int
main(int argc, char **argv)
{
int epfd;
epfd = epoll_create(256);
exit (epfd == -1 ? 1 : 0);
}, [AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_EPOLL, 1,
[Define if your system supports the epoll system calls])
needsignal=yes
have_epoll=yes
AC_LIBOBJ(epoll_sub)
], AC_MSG_RESULT(no), AC_MSG_RESULT(no))
fi
fi
AM_CONDITIONAL(EPOLL_BACKEND, [test "x$haveepoll" = "xyes"])
haveeventports=no
AC_CHECK_FUNCS(port_create, [haveeventports=yes], )
if test "x$haveeventports" = "xyes" ; then
AC_DEFINE(HAVE_EVENT_PORTS, 1,
[Define if your system supports event ports])
needsignal=yes
fi
AM_CONDITIONAL(EVPORT_BACKEND, [test "x$haveeventports" = "xyes"])
if test "x$bwin32" = "xtrue"; then
needsignal=yes
fi
AM_CONDITIONAL(SIGNAL_SUPPORT, [test "x$needsignal" = "xyes"])
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_CHECK_TYPES([uint64_t, uint32_t, uint16_t, uint8_t, uintptr_t], , ,
[#ifdef HAVE_STDINT_H
#include <stdint.h>
#elif defined(HAVE_INTTYPES_H)
#include <inttypes.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif])
AC_CHECK_TYPES([fd_mask], , ,
[#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SELECT_H
#include <select.h>
#endif])
AC_CHECK_SIZEOF(long long)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(size_t)
AC_CHECK_SIZEOF(void *)
AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t, struct addrinfo], , ,
[#define _GNU_SOURCE
#include <sys/types.h>
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_IN6_H
#include <netinet/in6.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef WIN32
#define WIN32_WINNT 0x400
#define _WIN32_WINNT 0x400
#define WIN32_LEAN_AND_MEAN
#if defined(_MSC_VER) && (_MSC_VER < 1300)
#include <winsock.h>
#else
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#endif
])
AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len], , ,
[#include <sys/types.h>
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_NETINET_IN6_H
#include <netinet/in6.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef WIN32
#define WIN32_WINNT 0x400
#define _WIN32_WINNT 0x400
#define WIN32_LEAN_AND_MEAN
#if defined(_MSC_VER) && (_MSC_VER < 1300)
#include <winsock.h>
#else
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#endif
])
AC_MSG_CHECKING([for socklen_t])
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>],
[socklen_t x;],
AC_MSG_RESULT([yes]),
[AC_MSG_RESULT([no])
AC_DEFINE(socklen_t, unsigned int,
[Define to unsigned int if you dont have it])]
)
AC_MSG_CHECKING([whether our compiler supports __func__])
AC_TRY_COMPILE([],
[ const char *cp = __func__; ],
AC_MSG_RESULT([yes]),
AC_MSG_RESULT([no])
AC_MSG_CHECKING([whether our compiler supports __FUNCTION__])
AC_TRY_COMPILE([],
[ const char *cp = __FUNCTION__; ],
AC_MSG_RESULT([yes])
AC_DEFINE(__func__, __FUNCTION__,
[Define to appropriate substitue if compiler doesnt have __func__]),
AC_MSG_RESULT([no])
AC_DEFINE(__func__, __FILE__,
[Define to appropriate substitue if compiler doesnt have __func__])))
# check if we can compile with pthreads
have_pthreads=no
if test x$bwin32 != xtrue && test "$enable_thread_support" != "no"; then
ACX_PTHREAD([
AC_DEFINE(HAVE_PTHREADS, 1,
[Define if we have pthreads on this system])
have_pthreads=yes])
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
AC_CHECK_SIZEOF(pthread_t, ,
[AC_INCLUDES_DEFAULT()
#include <pthread.h> ]
)
fi
AM_CONDITIONAL(PTHREADS, [test "$have_pthreads" != "no" && test "$enable_thread_support" != "no"])
# check if we should compile locking into the library
if test x$enable_thread_support = xno; then
AC_DEFINE(DISABLE_THREAD_SUPPORT, 1,
[Define if libevent should not be compiled with thread support])
fi
# check if we should hard-code the mm functions.
if test x$enable_malloc_replacement = xno; then
AC_DEFINE(DISABLE_MM_REPLACEMENT, 1,
[Define if libevent should not allow replacing the mm functions])
fi
# check if we should hard-code debugging out
if test x$enable_debug_mode = xno; then
AC_DEFINE(DISABLE_DEBUG_MODE, 1,
[Define if libevent should build without support for a debug mode])
fi
# check if we have and should use openssl
AM_CONDITIONAL(OPENSSL, [test "$enable_openssl" != "no" && test "$have_openssl" = "yes"])
# Add some more warnings which we use in development but not in the
# released versions. (Some relevant gcc versions can't handle these.)
if test x$enable_gcc_warnings = xyes; then
AC_COMPILE_IFELSE(AC_LANG_PROGRAM([], [
#if !defined(__GNUC__) || (__GNUC__ < 4)
#error
#endif]), have_gcc4=yes, have_gcc4=no)
AC_COMPILE_IFELSE(AC_LANG_PROGRAM([], [
#if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
#error
#endif]), have_gcc42=yes, have_gcc42=no)
AC_COMPILE_IFELSE(AC_LANG_PROGRAM([], [
#if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
#error
#endif]), have_gcc45=yes, have_gcc45=no)
CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat -Wwrite-strings -Wmissing-declarations -Wredundant-decls -Wnested-externs -Wbad-function-cast -Wswitch-enum -Werror"
CFLAGS="$CFLAGS -Wno-unused-parameter -Wstrict-aliasing"
if test x$have_gcc4 = xyes ; then
# These warnings break gcc 3.3.5 and work on gcc 4.0.2
CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wdeclaration-after-statement"
#CFLAGS="$CFLAGS -Wold-style-definition"
fi
if test x$have_gcc42 = xyes ; then
# These warnings break gcc 4.0.2 and work on gcc 4.2
CFLAGS="$CFLAGS -Waddress -Wnormalized=id -Woverride-init"
fi
if test x$have_gcc45 = xyes ; then
# These warnings work on gcc 4.5
CFLAGS="$CFLAGS -Wlogical-op"
fi
##This will break the world on some 64-bit architectures
# CFLAGS="$CFLAGS -Winline"
fi
AC_CONFIG_FILES( [libevent.pc libevent_openssl.pc libevent_pthreads.pc] )
AC_OUTPUT(Makefile include/Makefile test/Makefile sample/Makefile)
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