"""Test script for poplib module.""" # Modified by Giampaolo Rodola' to give poplib.POP3 and poplib.POP3_SSL # a real test suite import poplib import threading import asyncore import asynchat import socket import os import time import errno from unittest import TestCase from test import support as test_support HOST = test_support.HOST PORT = 0 # the dummy data returned by server when LIST and RETR commands are issued LIST_RESP = b'1 1\r\n2 2\r\n3 3\r\n4 4\r\n5 5\r\n.\r\n' RETR_RESP = b"""From: postmaster@python.org\ \r\nContent-Type: text/plain\r\n\ MIME-Version: 1.0\r\n\ Subject: Dummy\r\n\ \r\n\ line1\r\n\ line2\r\n\ line3\r\n\ .\r\n""" class DummyPOP3Handler(asynchat.async_chat): def __init__(self, conn): asynchat.async_chat.__init__(self, conn) self.set_terminator(b"\r\n") self.in_buffer = [] self.push('+OK dummy pop3 server ready. ') def collect_incoming_data(self, data): self.in_buffer.append(data) def found_terminator(self): line = b''.join(self.in_buffer) line = str(line, 'ISO-8859-1') self.in_buffer = [] cmd = line.split(' ')[0].lower() space = line.find(' ') if space != -1: arg = line[space + 1:] else: arg = "" if hasattr(self, 'cmd_' + cmd): method = getattr(self, 'cmd_' + cmd) method(arg) else: self.push('-ERR unrecognized POP3 command "%s".' %cmd) def handle_error(self): raise def push(self, data): asynchat.async_chat.push(self, data.encode("ISO-8859-1") + b'\r\n') def cmd_echo(self, arg): # sends back the received string (used by the test suite) self.push(arg) def cmd_user(self, arg): if arg != "guido": self.push("-ERR no such user") self.push('+OK password required') def cmd_pass(self, arg): if arg != "python": self.push("-ERR wrong password") self.push('+OK 10 messages') def cmd_stat(self, arg): self.push('+OK 10 100') def cmd_list(self, arg): if arg: self.push('+OK %s %s' %(arg, arg)) else: self.push('+OK') asynchat.async_chat.push(self, LIST_RESP) cmd_uidl = cmd_list def cmd_retr(self, arg): self.push('+OK %s bytes' %len(RETR_RESP)) asynchat.async_chat.push(self, RETR_RESP) cmd_top = cmd_retr def cmd_dele(self, arg): self.push('+OK message marked for deletion.') def cmd_noop(self, arg): self.push('+OK done nothing.') def cmd_rpop(self, arg): self.push('+OK done nothing.') def cmd_apop(self, arg): self.push('+OK done nothing.') class DummyPOP3Server(asyncore.dispatcher, threading.Thread): handler = DummyPOP3Handler def __init__(self, address, af=socket.AF_INET): threading.Thread.__init__(self) asyncore.dispatcher.__init__(self) self.create_socket(af, socket.SOCK_STREAM) self.bind(address) self.listen(5) self.active = False self.active_lock = threading.Lock() self.host, self.port = self.socket.getsockname()[:2] def start(self): assert not self.active self.__flag = threading.Event() threading.Thread.start(self) self.__flag.wait() def run(self): self.active = True self.__flag.set() while self.active and asyncore.socket_map: self.active_lock.acquire() asyncore.loop(timeout=0.1, count=1) self.active_lock.release() asyncore.close_all(ignore_all=True) def stop(self): assert self.active self.active = False self.join() def handle_accept(self): conn, addr = self.accept() self.handler = self.handler(conn) self.close() def handle_connect(self): self.close() handle_read = handle_connect def writable(self): return 0 def handle_error(self): raise class TestPOP3Class(TestCase): def assertOK(self, resp): self.assertTrue(resp.startswith(b"+OK")) def setUp(self): self.server = DummyPOP3Server((HOST, PORT)) self.server.start() self.client = poplib.POP3(self.server.host, self.server.port) def tearDown(self): self.client.quit() self.server.stop() def test_getwelcome(self): self.assertEqual(self.client.getwelcome(), b'+OK dummy pop3 server ready. ') def test_exceptions(self): self.assertRaises(poplib.error_proto, self.client._shortcmd, 'echo -err') def test_user(self): self.assertOK(self.client.user('guido')) self.assertRaises(poplib.error_proto, self.client.user, 'invalid') def test_pass_(self): self.assertOK(self.client.pass_('python')) self.assertRaises(poplib.error_proto, self.client.user, 'invalid') def test_stat(self): self.assertEqual(self.client.stat(), (10, 100)) def test_list(self): self.assertEqual(self.client.list()[1:], ([b'1 1', b'2 2', b'3 3', b'4 4', b'5 5'], 25)) self.assertTrue(self.client.list('1').endswith(b"OK 1 1")) def test_retr(self): expected = (b'+OK 116 bytes', [b'From: postmaster@python.org', b'Content-Type: text/plain', b'MIME-Version: 1.0', b'Subject: Dummy', b'', b'line1', b'line2', b'line3'], 113) foo = self.client.retr('foo') self.assertEqual(foo, expected) def test_dele(self): self.assertOK(self.client.dele('foo')) def test_noop(self): self.assertOK(self.client.noop()) def test_rpop(self): self.assertOK(self.client.rpop('foo')) def test_apop(self): self.assertOK(self.client.apop('foo', 'dummypassword')) def test_top(self): expected = (b'+OK 116 bytes', [b'From: postmaster@python.org', b'Content-Type: text/plain', b'MIME-Version: 1.0', b'Subject: Dummy', b'', b'line1', b'line2', b'line3'], 113) self.assertEqual(self.client.top(1, 1), expected) def test_uidl(self): self.client.uidl() self.client.uidl('foo') SUPPORTS_SSL = False if hasattr(poplib, 'POP3_SSL'): import ssl SUPPORTS_SSL = True CERTFILE = os.path.join(os.path.dirname(__file__) or os.curdir, "keycert.pem") class DummyPOP3_SSLHandler(DummyPOP3Handler): def __init__(self, conn): asynchat.async_chat.__init__(self, conn) ssl_socket = ssl.wrap_socket(self.socket, certfile=CERTFILE, server_side=True, do_handshake_on_connect=False) self.del_channel() self.set_socket(ssl_socket) # Must try handshake before calling push() self._ssl_accepting = True self._do_ssl_handshake() self.set_terminator(b"\r\n") self.in_buffer = [] self.push('+OK dummy pop3 server ready. ') def _do_ssl_handshake(self): try: self.socket.do_handshake() except ssl.SSLError as err: if err.args[0] in (ssl.SSL_ERROR_WANT_READ, ssl.SSL_ERROR_WANT_WRITE): return elif err.args[0] == ssl.SSL_ERROR_EOF: return self.handle_close() raise except socket.error as err: if err.args[0] == errno.ECONNABORTED: return self.handle_close() else: self._ssl_accepting = False def handle_read(self): if self._ssl_accepting: self._do_ssl_handshake() else: DummyPOP3Handler.handle_read(self) class TestPOP3_SSLClass(TestPOP3Class): # repeat previous tests by using poplib.POP3_SSL def setUp(self): self.server = DummyPOP3Server((HOST, PORT)) self.server.handler = DummyPOP3_SSLHandler self.server.start() self.client = poplib.POP3_SSL(self.server.host, self.server.port) def test__all__(self): self.assertTrue('POP3_SSL' in poplib.__all__) class TestTimeouts(TestCase): def setUp(self): self.evt = threading.Event() self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) self.sock.settimeout(3) self.port = test_support.bind_port(self.sock) threading.Thread(target=self.server, args=(self.evt,self.sock)).start() time.sleep(.1) def tearDown(self): self.evt.wait() def server(self, evt, serv): serv.listen(5) try: conn, addr = serv.accept() except socket.timeout: pass else: conn.send(b"+ Hola mundo\n") conn.close() finally: serv.close() evt.set() def testTimeoutDefault(self): self.assertTrue(socket.getdefaulttimeout() is None) socket.setdefaulttimeout(30) try: pop = poplib.POP3("localhost", self.port) finally: socket.setdefaulttimeout(None) self.assertEqual(pop.sock.gettimeout(), 30) pop.sock.close() def testTimeoutNone(self): self.assertTrue(socket.getdefaulttimeout() is None) socket.setdefaulttimeout(30) try: pop = poplib.POP3(HOST, self.port, timeout=None) finally: socket.setdefaulttimeout(None) self.assertTrue(pop.sock.gettimeout() is None) pop.sock.close() def testTimeoutValue(self): pop = poplib.POP3("localhost", self.port, timeout=30) self.assertEqual(pop.sock.gettimeout(), 30) pop.sock.close() def test_main(): tests = [TestPOP3Class, TestTimeouts] if SUPPORTS_SSL: tests.append(TestPOP3_SSLClass) thread_info = test_support.threading_setup() try: test_support.run_unittest(*tests) finally: test_support.threading_cleanup(*thread_info) if __name__ == '__main__': test_main() 222'>222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 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dnl Process this file with autoconf 2.0 or later to make a configure script.
AC_REVISION($Revision$)
AC_PREREQ(2.0)
AC_INIT(Include/object.h)
AC_CONFIG_HEADER(config.h)

# Set VERSION so we only need to edit in one place (i.e., here)
AC_SUBST(VERSION)
VERSION=2.0

# NEXTSTEP stuff
if test -f /usr/lib/NextStep/software_version -o -f /System/Library/CoreServices/software_version ; then

	AC_MSG_CHECKING(for --with-next-archs)
	AC_ARG_WITH(next-archs,
	 [  --with-next-archs='arch1 arch2 ..'   build MAB binary], [
		if test -n "$withval"; then
		    ac_arch_flags=`/usr/lib/arch_tool -archify_list $withval`
		    # GCC does not currently support multi archs on the NeXT
		    with_gcc=no
		fi
		AC_MSG_RESULT($with_next_archs)
	], [AC_MSG_RESULT(none: using `arch`)])
	
	if test -z "$MACHDEP"
	then
		set X `hostinfo | egrep '(NeXT Mach|Kernel Release).*:' | \
 			sed -e 's/://' -e 's/\./_/'` && \
			ac_sys_system=next && ac_sys_release=$4

		MACHDEP="$ac_sys_system$ac_sys_release"
	fi
fi

AC_ARG_WITH(next-framework,
[  --with-next-framework           Build (OpenStep|Rhapsody|MacOSX) framework],,)
AC_ARG_WITH(dyld,
[  --with-dyld                     Use (OpenStep|Rhapsody|MacOSX) dynamic linker],,)

# Set name for machine-dependent library files
AC_SUBST(MACHDEP)
AC_MSG_CHECKING(MACHDEP)
if test -z "$MACHDEP"
then
	ac_sys_system=`uname -s`
	if test "$ac_sys_system" = "AIX" -o "$ac_sys_system" = "Monterey64"; then
		ac_sys_release=`uname -v`
	else
		ac_sys_release=`uname -r`
	fi
	ac_md_system=`echo $ac_sys_system |
			   tr -d '[/ ]' | tr '[[A-Z]]' '[[a-z]]'`
	ac_md_release=`echo $ac_sys_release |
			   tr -d '[/ ]' | sed 's/\..*//'`
	MACHDEP="$ac_md_system$ac_md_release"

	case $MACHDEP in
	'')	MACHDEP="unknown";;
	esac
fi

#
# SGI compilers allow the specification of the both the ABI and the
# ISA on the command line.  Depending on the values of these switches,
# different and often incompatable code will be generated.
#
# The SGI_ABI variable can be used to modify the CC and LDFLAGS and
# thus supply support for various ABI/ISA combinations.  The MACHDEP
# variable is also adjusted.
#
AC_SUBST(SGI_ABI)
if test ! -z "$SGI_ABI"
then
        CC="cc $SGI_ABI"
        LDFLAGS="$SGI_ABI $LDFLAGS"
        MACHDEP=`echo "${MACHDEP}${SGI_ABI}" | sed 's/ *//g'`
fi
AC_MSG_RESULT($MACHDEP)

#
# CCC is the command that compiles C++ programs
#
# Not all make programs have this predefined.
#
#AC_SUBST(SET_CCC)
#AC_MSG_CHECKING(CCC)
#if test -z "$CCC"
#then
#	case $ac_sys_system in
#	IRIX*)	SET_CCC="CCC= CC ${SGI_ABI}";;
#	Linux*) SET_CCC="CCC= g++";;
#	*)	SET_CCC=""
#	esac
#else
#        SET_CCC="CCC= ${CCC}"
#fi
#AC_MSG_RESULT($SET_CCC)


# checks for alternative programs
AC_MSG_CHECKING(for --without-gcc)
AC_ARG_WITH(gcc, [  --without-gcc                   never use gcc], [
	case $withval in
	no)	CC=cc
		without_gcc=yes;;
	yes)	CC=gcc
		without_gcc=no;;
	*)	CC=$withval
		without_gcc=$withval;;
	esac], [
	case $ac_sys_system in
	OSF1)	CC=cc
		without_gcc=;;
	BeOS*)
		# Dunno if it's a good idea to get this over with all at once, or
		# to handle it in with the other goodies.
		MACHDEP=beos

		case $BE_HOST_CPU in
		ppc)
			CC="mwcc -I$PWD/BeOS -nodup"
			without_gcc=yes
			case `uname -r` in
				4.0*) OPT="-DUSE_DL_EXPORT -O7 -opt schedule604 -export pragma" ;;
				*) OPT="-DUSE_DL_EXPORT -O2 -proc 604e -export pragma" ;;
			esac
			CCSHARED=-UUSE_DL_EXPORT
			LDFLAGS="$LDFLAGS -nodup"

			AR="$PWD/BeOS/ar-fake"
			RANLIB=:
			
			AC_DEFINE(DL_EXPORT_HEADER,"dl_export.h")
			;;
		x86)
			CC="gcc -I$PWD/BeOS"
			without_gcc=no
			OPT="-DUSE_DL_EXPORT -O"
			CCSHARED=-UUSE_DL_EXPORT

			AR="$PWD/BeOS/ar-fake"
			RANLIB=:
			
			AC_DEFINE(DL_EXPORT_HEADER,"dl_export.h")
			;;
		*)
			AC_ERROR(Your BeOS system isn't PowerPC or x86... neat, but this won't work...)
			;;
		esac
		;;
    Monterey*)
        RANLIB=:
        without_gcc=;;
	*)	without_gcc=no;;
	esac])
AC_MSG_RESULT($without_gcc)

AC_SUBST(SET_CXX)
AC_SUBST(MAINOBJ)
MAINOBJ=python.o
AC_MSG_CHECKING(for --with-cxx=<compiler>)
AC_ARG_WITH(cxx, [  --with-cxx=<compiler>           enable C++ support],[
	case $withval in
	no)	CXX=
		with_cxx=no;;
	*)	CXX=$withval
		MAINOBJ=ccpython.o
		with_cxx=$withval;;
	esac], [
	with_cxx=no
])
AC_MSG_RESULT($with_cxx)
SET_CXX="CXX = $CXX"

#AC_MSG_CHECKING(CCC)
#if test -z "$CCC"
#then
#	case $ac_sys_system in
#	IRIX*)	SET_CCC="CCC= CC ${SGI_ABI}";;
#	Linux*) SET_CCC="CCC= g++";;
#	*)	SET_CCC=""
#	esac
#else
#        SET_CCC="CCC= ${CCC}"
#fi
#AC_MSG_RESULT($SET_CCC)

# If the user switches compilers, we can't believe the cache
if test ! -z "$ac_cv_prog_CC" -a ! -z "$CC" -a "$CC" != "$ac_cv_prog_CC"
then
  AC_ERROR(cached CC is different -- throw away $cache_file
(it is also a good idea to do 'make clean' before compiling))
fi

AC_PROG_CC

case $MACHDEP in
bsdos*)
    case $CC in
    gcc) CC="$CC -D_HAVE_BSDI";;
    esac;;
esac

case $ac_sys_system in
hp*|HP*)
    case $CC in
    cc|*/cc) CC="$CC -Aa -D_HPUX_SOURCE";;
    esac;;
BeOS*)
	case $CC in
	cc) CC=cc;;
	esac;;
Monterey*)
    case $CC in
    cc) CC="$CC -Wl,-Bexport";;
    esac;;
esac

# LDLIBRARY is the name of the library to link against (as opposed to the
# name of the library into which to insert object files). On systems
# without shared libraries, LDLIBRARY is the same as LIBRARY (defined in
# the Makefiles). 
AC_SUBST(MAKE_LDLIBRARY)
AC_SUBST(LDLIBRARY)
LDLIBRARY=''

# LINKCC is the command that links the python executable -- default is $(CC).
# This is altered for AIX and BeOS in order to build the export list before 
# linking.
AC_SUBST(LINKCC)
AC_MSG_CHECKING(LINKCC)
if test -z "$LINKCC" -a ! -z "$CXX"
then
    LINKCC="$CXX"
fi
if test -z "$LINKCC"
then
	case $ac_sys_system in
	AIX*)
	   LINKCC="\$(srcdir)/makexp_aix python.exp \"\" \$(LIBRARY); \$(PURIFY) \$(CC)";;
	BeOS*)
	   LINKCC="\$(srcdir)/../BeOS/linkcc \$(LIBRARY) \$(PURIFY) \$(CC) \$(OPT)"
	   LDLIBRARY='libpython$(VERSION).so';;
	dgux*)
	   LINKCC="LD_RUN_PATH=$libdir \$(PURIFY) \$(CC)";;
	Monterey64*)
	   LINKCC="\$(PURIFY) \$(CC) -L/usr/lib/ia64l64";;
	*) LINKCC="\$(PURIFY) \$(CC)";;
	esac
fi
AC_MSG_RESULT($LINKCC)

AC_MSG_CHECKING(LDLIBRARY)

# NeXT framework builds require that the 'ar' library be converted into
# a bundle using libtool.
if test "$with_next_framework"
then
  LDLIBRARY='libpython$(VERSION).dylib'
fi  

# DG/UX requires some fancy ld contortions to produce a .so from an .a
if test "$MACHDEP" = "dguxR4"
then
  LDLIBRARY='libpython$(VERSION).so'
  OPT="$OPT -pic"
fi
AC_MSG_RESULT($LDLIBRARY)

# If LDLIBRARY is different from LIBRARY, emit a rule to build it.
if test -z "$LDLIBRARY"
then
  LDLIBRARY='libpython$(VERSION).a'
  MAKE_LDLIBRARY="true"
else
  MAKE_LDLIBRARY='$(MAKE) $(LDLIBRARY)'
fi

AC_PROG_RANLIB
AC_SUBST(AR)
AC_CHECK_PROGS(AR, ar aal, ar)
AC_SUBST(INSTALL)
AC_SUBST(INSTALL_PROGRAM)
AC_SUBST(INSTALL_DATA)
# Install just never works :-(
if test -z "$INSTALL"
then
	INSTALL=cp
	INSTALL_PROGRAM=cp
	INSTALL_DATA=cp
else
	INSTALL_PROGRAM="$INSTALL"
	INSTALL_DATA="$INSTALL -m 644"
fi

# Not every filesystem supports hard links
AC_SUBST(LN)
if test -z "$LN" ; then
	case $ac_sys_system in
		BeOS*) LN="ln -s";;
		*) LN=ln;;
	esac
fi

# Optimizer/debugger flags passed between Makefiles
AC_SUBST(OPT)
if test -z "$OPT"
then
	case $GCC in
	yes)
		case $ac_cv_prog_cc_g in
		yes)	OPT="-g -O2";;
		*)	OPT="-O2";;
		esac
		;;
	*)	OPT="-O";;
	esac
fi

# The current (beta) Monterey compiler dies with optimizations
case $ac_sys_system in
Monterey*) OPT="";;
esac

if test "$ac_arch_flags"
then
	OPT="$OPT $ac_arch_flags"
fi
# checks for UNIX variants that set C preprocessor variables
AC_AIX
AC_MINIX

AC_MSG_CHECKING(whether $CC accepts -OPT:Olimit=0)
AC_CACHE_VAL(ac_cv_opt_olimit_ok,
[ac_save_cc="$CC"
CC="$CC -OPT:Olimit=0"
AC_TRY_RUN([int main() { return 0; }],
  ac_cv_opt_olimit_ok=yes,
  ac_cv_opt_olimit_ok=no)
CC="$ac_save_cc"])
AC_MSG_RESULT($ac_cv_opt_olimit_ok)
if test $ac_cv_opt_olimit_ok = yes; then
  OPT="$OPT -OPT:Olimit=0"
else
  AC_MSG_CHECKING(whether $CC accepts -Olimit 1500)
  AC_CACHE_VAL(ac_cv_olimit_ok,
  [ac_save_cc="$CC"
  CC="$CC -Olimit 1500"
  AC_TRY_RUN([int main() { return 0; }],
    ac_cv_olimit_ok=yes,
    ac_cv_olimit_ok=no)
  CC="$ac_save_cc"])
  AC_MSG_RESULT($ac_cv_olimit_ok)
  if test $ac_cv_olimit_ok = yes; then
    OPT="$OPT -Olimit 1500"
  fi
fi

dnl # check for ANSI or K&R ("traditional") preprocessor
dnl AC_MSG_CHECKING(for C preprocessor type)
dnl AC_TRY_COMPILE([
dnl #define spam(name, doc) {#name, &name, #name "() -- " doc}
dnl int foo;
dnl struct {char *name; int *addr; char *doc;} desc = spam(foo, "something");
dnl ], [;], cpp_type=ansi, AC_DEFINE(HAVE_OLD_CPP) cpp_type=traditional)
dnl AC_MSG_RESULT($cpp_type)

# checks for header files
AC_HEADER_STDC
AC_CHECK_HEADERS(dlfcn.h fcntl.h limits.h locale.h ncurses.h poll.h pthread.h \
signal.h stdarg.h stddef.h stdlib.h thread.h unistd.h utime.h \
sys/audioio.h sys/file.h sys/lock.h db_185.h db.h \
sys/param.h sys/select.h sys/socket.h sys/time.h sys/times.h \
sys/un.h sys/utsname.h sys/wait.h pty.h libutil.h \
ndbm.h db1/ndbm.h gdbm/ndbm.h)
AC_HEADER_DIRENT

# checks for typedefs
was_it_defined=no
AC_MSG_CHECKING(for clock_t in time.h)
AC_EGREP_HEADER(clock_t, time.h, was_it_defined=yes, AC_DEFINE(clock_t, long))
AC_MSG_RESULT($was_it_defined)

# Add some code to confdefs.h so that the test for off_t works on SCO
cat >> confdefs.h <<\EOF
#if defined(SCO_DS)
#undef _OFF_T
#endif
EOF

# Type availability checks
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIGNAL
AC_TYPE_SIZE_T
AC_TYPE_UID_T

# Sizes of various common basic types
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(char)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(float)
AC_CHECK_SIZEOF(double)
AC_CHECK_SIZEOF(fpos_t)

AC_MSG_CHECKING(for long long support)
have_long_long=no
AC_TRY_COMPILE([], [long long x; x = (long long)0;], AC_DEFINE(HAVE_LONG_LONG) have_long_long=yes)
AC_MSG_RESULT($have_long_long)
if test "$have_long_long" = yes ; then
AC_CHECK_SIZEOF(long long)
fi

AC_MSG_CHECKING(for uintptr_t support)
have_uintptr_t=no
AC_TRY_COMPILE([], [uintptr_t x; x = (uintptr_t)0;], AC_DEFINE(HAVE_UINTPTR_T) have_uintptr_t=yes)
AC_MSG_RESULT($have_uintptr_t)
if test "$have_uintptr_t" = yes ; then
AC_CHECK_SIZEOF(uintptr_t)
fi

# Hmph. AC_CHECK_SIZEOF() doesn't include <sys/types.h>.
AC_MSG_CHECKING(size of off_t)
AC_CACHE_VAL(ac_cv_sizeof_off_t,
[AC_TRY_RUN([#include <stdio.h>
#include <sys/types.h>
main()
{
  FILE *f=fopen("conftestval", "w");
  if (!f) exit(1);
  fprintf(f, "%d\n", sizeof(off_t));
  exit(0);
}], ac_cv_sizeof_off_t=`cat conftestval`, ac_cv_sizeof_off_t=0)
])
AC_MSG_RESULT($ac_cv_sizeof_off_t)
AC_DEFINE_UNQUOTED(SIZEOF_OFF_T, $ac_cv_sizeof_off_t)

AC_MSG_CHECKING(whether to enable large file support)
if test "$have_long_long" = yes -a \
	"$ac_cv_sizeof_off_t" -gt "$ac_cv_sizeof_long" -a \
	"$ac_cv_sizeof_long_long" -ge "$ac_cv_sizeof_off_t"; then
  AC_DEFINE(HAVE_LARGEFILE_SUPPORT)
  AC_MSG_RESULT(yes)
else
  AC_MSG_RESULT(no)
fi

# AC_CHECK_SIZEOF() doesn't include <time.h>.
AC_MSG_CHECKING(size of time_t)
AC_CACHE_VAL(ac_cv_sizeof_time_t,
[AC_TRY_RUN([#include <stdio.h>
#include <time.h>
main()
{
  FILE *f=fopen("conftestval", "w");
  if (!f) exit(1);
  fprintf(f, "%d\n", sizeof(time_t));
  exit(0);
}], ac_cv_sizeof_time_t=`cat conftestval`, ac_cv_sizeof_time_t=0)
])
AC_MSG_RESULT($ac_cv_sizeof_time_t)
AC_DEFINE_UNQUOTED(SIZEOF_TIME_T, $ac_cv_sizeof_time_t)


# if have pthread_t then define SIZEOF_PTHREAD_T
AC_MSG_CHECKING(for pthread_t)
have_pthread_t=no
AC_TRY_COMPILE([#include <pthread.h>], [pthread_t x; x = (pthread_t)0;], have_pthread_t=yes)
AC_MSG_RESULT($have_pthread_t)
if test "$have_pthread_t" = yes ; then
  # AC_CHECK_SIZEOF() doesn't include <pthread.h>.
  AC_MSG_CHECKING(size of pthread_t)
  AC_CACHE_VAL(ac_cv_sizeof_pthread_t,
  [AC_TRY_RUN([#include <stdio.h>
  #include <pthread.h>
  main()
  {
    FILE *f=fopen("conftestval", "w");
    if (!f) exit(1);
    fprintf(f, "%d\n", sizeof(pthread_t));
    exit(0);
  }], ac_cv_sizeof_pthread_t=`cat conftestval`, ac_cv_sizeof_pthread_t=0)
  ])
  AC_MSG_RESULT($ac_cv_sizeof_pthread_t)
  AC_DEFINE_UNQUOTED(SIZEOF_PTHREAD_T, $ac_cv_sizeof_pthread_t)
fi


# Minor variations in building a framework between NextStep versions 4 and 5
AC_SUBST(LIBTOOL_CRUFT)
case $ac_sys_system/$ac_sys_release in
  next/4*)
    ns_undef_sym='__environ'
    LIBTOOL_CRUFT="-U $ns_undef_sym" ;;
  next/5*)
    ns_undef_sym='_environ'
    LIBTOOL_CRUFT="-lcc_dynamic -U $ns_undef_sym" ;;
esac

AC_MSG_CHECKING(for --with-next-framework)
if test "$with_next_framework"
then
	OPT="$OPT -fno-common"
	# -U __environ is needed since bundles don't have access
	# to crt0 when built but will always be linked against it
	LDFLAGS="$LDFLAGS -Wl,-U,$ns_undef_sym"
	AC_DEFINE(WITH_NEXT_FRAMEWORK)
	AC_MSG_RESULT(yes)
else
	AC_MSG_RESULT(no)
fi

AC_MSG_CHECKING(for --with-dyld)
if test "$with_next_framework" -o "$with_dyld"
then
	if test "$with_dyld"
	then
		AC_MSG_RESULT(yes)
	else
		AC_MSG_RESULT(required for framework build)
	fi
	AC_DEFINE(WITH_DYLD)
	ns_dyld='set'
else
	AC_MSG_RESULT(no)
fi

# Set info about shared libraries.
AC_SUBST(SO)
AC_SUBST(LDSHARED)
AC_SUBST(CCSHARED)
AC_SUBST(LINKFORSHARED)
# SO is the extension of shared libraries `(including the dot!)
# -- usually .so, .sl on HP-UX
AC_MSG_CHECKING(SO)
if test -z "$SO"
then
	case $ac_sys_system in
	hp*|HP*)   SO=.sl;;
	*)	   SO=.so;;
	esac
fi
AC_MSG_RESULT($SO)
# LDSHARED is the ld *command* used to create shared library
# -- "ld" on SunOS 4.x.x, "ld -G" on SunOS 5.x, "ld -shared" on IRIX 5
# (Shared libraries in this instance are shared modules to be loaded into
# Python, as opposed to building Python itself as a shared library.)
AC_MSG_CHECKING(LDSHARED)
if test -z "$LDSHARED"
then
	case $ac_sys_system/$ac_sys_release in
	AIX*) LDSHARED="\$(srcdir)/ld_so_aix \$(CC)";;
	BeOS*) LDSHARED="\$(srcdir)/../BeOS/linkmodule -L.. -lpython\$(VERSION)";;
	IRIX/5*) LDSHARED="ld -shared";;
	IRIX*/6*) LDSHARED="ld ${SGI_ABI} -shared -all";;
	SunOS/4*) LDSHARED="ld";;
	SunOS/5*) 
		if test "$GCC" = "yes"
		then LDSHARED='$(CC) -G'
		else LDSHARED="ld -G";
		fi ;;
	hp*|HP*) LDSHARED="ld -b";;
	OSF*) LDSHARED="ld -shared -expect_unresolved \"*\"";;
	DYNIX/ptx*) LDSHARED="ld -G";;
	next/*) 
		if test "$ns_dyld"
		then LDSHARED='$(CC) $(LDFLAGS) -bundle -prebind'
		else LDSHARED='$(CC) $(CFLAGS) -nostdlib -r';
		fi
                if test "$with_next_framework" ; then
		    LDSHARED="$LDSHARED \$(LDLIBRARY)"
		fi ;;
	Linux*) LDSHARED="gcc -shared";;
	dgux*) LDSHARED="ld -G";;
	BSD/OS*/4*) LDSHARED="gcc -shared";;
	OpenBSD*) LDSHARED="ld -Bshareable";;
	NetBSD*)
		if [[ "`$CC -dM -E - </dev/null | grep __ELF__`" != "" ]]
		then
			LDSHARED="cc -shared"
		else
			LDSHARED="ld -Bshareable"
		fi;;
	FreeBSD*)
		if [[ "`$CC -dM -E - </dev/null | grep __ELF__`" != "" ]]
		then
			LDSHARED="cc -shared ${LDFLAGS}"
		else
			LDSHARED="ld -Bshareable ${LDFLAGS}"
		fi;;
	SCO_SV*) LDSHARED="cc -G -KPIC -Ki486 -belf -Wl,-Bexport";;
	Monterey*) LDSHARED="cc -G -dy -Bdynamic -Bexport -L/usr/lib/ia64l64";;
	*)	LDSHARED="ld";;
	esac
fi
AC_MSG_RESULT($LDSHARED)
# CCSHARED are the C *flags* used to create objects to go into a shared
# library (module) -- this is only needed for a few systems
AC_MSG_CHECKING(CCSHARED)
if test -z "$CCSHARED"
then
	case $ac_sys_system/$ac_sys_release in
	hp*|HP*) if test "$GCC" = yes;
		 then CCSHARED="-fpic";
		 else CCSHARED="+z";
		 fi;;
	Linux*) CCSHARED="-fpic";;
	BSD/OS*/4*) CCSHARED="-fpic";;
	OpenBSD*) CCSHARED="-fpic";;
	FreeBSD*|NetBSD*) CCSHARED="-fPIC";;
	SCO_SV*) CCSHARED="-KPIC -dy -Bdynamic";;
	Monterey*) CCSHARED="-G";;
	IRIX*/6*)  case $CC in
		   *gcc*) CCSHARED="-shared";;
		   *) CCSHARED="";;
		   esac;;
	esac
fi
AC_MSG_RESULT($CCSHARED)
# LINKFORSHARED are the flags passed to the $(CC) command that links
# the python executable -- this is only needed for a few systems
AC_MSG_CHECKING(LINKFORSHARED)
if test -z "$LINKFORSHARED"
then
	case $ac_sys_system/$ac_sys_release in
	AIX*)	LINKFORSHARED='-Wl,-bE:python.exp -lld';;
	hp*|HP*)
	    LINKFORSHARED="-Wl,-E -Wl,+s -Wl,+b\$(BINLIBDEST)/lib-dynload";;
	BSD/OS/4*) LINKFORSHARED="-Xlinker -export-dynamic";;
	Linux*) LINKFORSHARED="-Xlinker -export-dynamic";;
	# -u libsys_s pulls in all symbols in libsys
	next/2*|next/3*) LINKFORSHARED="-u libsys_s";;
	# -u __dummy makes the linker aware of the objc runtime
	# in System.framework; otherwise, __objcInit (referenced in
	# crt1.o) gets erroneously defined as common, which breaks dynamic
	# loading of any modules which reference it in System.framework
	next/4*|next/5*) LINKFORSHARED="-u __dummy -framework System" ;;
	SCO_SV*) LINKFORSHARED="-Bdynamic -dy -Wl,-Bexport";;
	FreeBSD*|NetBSD*) 
		if [[ "`$CC -dM -E - </dev/null | grep __ELF__`" != "" ]]
		then
			LINKFORSHARED="-Wl,--export-dynamic"
		fi;;
	SunOS/5*) case $CC in
		  *gcc*)
		    if $CC -Xlinker -V 2>&1 | grep BFD >/dev/null
		    then
			LINKFORSHARED="-Xlinker --export-dynamic"
		    fi;;
		  esac;;
	esac
fi
AC_MSG_RESULT($LINKFORSHARED)

# checks for libraries
AC_CHECK_LIB(dl, dlopen)	# Dynamic linking for SunOS/Solaris and SYSV
AC_CHECK_LIB(dld, shl_load)	# Dynamic linking for HP-UX

# Check for --with-pydebug
AC_MSG_CHECKING(for --with-pydebug)
AC_ARG_WITH(pydebug, 
[  --with-pydebug                  build with Py_DEBUG defined], [
if test "$withval" != no
then AC_DEFINE(Py_DEBUG) AC_MSG_RESULT(yes)
else AC_MSG_RESULT(no)
fi],
[AC_MSG_RESULT(no)])

# checks for system dependent C++ extensions support
case "$ac_sys_system" in
	AIX*)	AC_MSG_CHECKING(for genuine AIX C++ extensions support)
		AC_TRY_LINK([#include "/usr/lpp/xlC/include/load.h"],
			    [loadAndInit("", 0, "")],
			    [AC_DEFINE(AIX_GENUINE_CPLUSPLUS)
			     AC_MSG_RESULT(yes)],
			    [AC_MSG_RESULT(no)]);;
	*) ;;
esac

# Most SVR4 platforms (e.g. Solaris) need -lsocket and -lnsl.
# However on SGI IRIX, these exist but are broken.
# BeOS' sockets are stashed in libnet.
case "$ac_sys_system" in
IRIX*) ;;
*)
AC_CHECK_LIB(nsl, t_open, [LIBS="-lnsl $LIBS"]) # SVR4
AC_CHECK_LIB(socket, socket, [LIBS="-lsocket $LIBS"], [], $LIBS) # SVR4 sockets
;;
esac
case "$ac_sys_system" in
BeOS*)
AC_CHECK_LIB(net, socket, [LIBS="-lnet $LIBS"], [], $LIBS) # BeOS
;;
esac

AC_MSG_CHECKING(for --with-libs)
AC_ARG_WITH(libs,
[  --with-libs='lib1 ...'          link against additional libs], [
AC_MSG_RESULT($withval)
LIBS="$withval $LIBS"
], AC_MSG_RESULT(no))

AC_SUBST(USE_THREAD_MODULE)
USE_THREAD_MODULE=""

AC_MSG_CHECKING(for --with-dec-threads)
AC_SUBST(LDLAST)
AC_ARG_WITH(dec-threads,
[  --with-dec-threads              use DEC Alpha/OSF1 thread-safe libraries], [
AC_MSG_RESULT($withval)
LDLAST=-threads
if test "${with_thread+set}" != set; then
   with_thread="$withval";
fi],
AC_MSG_RESULT(no))

AC_MSG_CHECKING(for --with-threads)
AC_ARG_WITH(threads,
[  --with(out)-threads[=DIRECTORY] disable/enable thread support])

# --with-thread is deprecated, but check for it anyway
AC_ARG_WITH(thread,
[  --with(out)-thread[=DIRECTORY]  deprecated; use --with(out)-threads],[
with_threads=$with_thread])

if test -z "$with_threads"
then with_threads="yes"
fi
AC_MSG_RESULT($with_threads)

if test "$with_threads" = "no"
then
    USE_THREAD_MODULE="#"
else
    if test -d "$with_threads"
    then LDFLAGS="$LDFLAGS -L$with_threads"
    fi
    if test -d "$withval"
    then LDFLAGS="$LDFLAGS -L$withval"
    fi
    AC_DEFINE(_REENTRANT)
    AC_CHECK_HEADER(mach/cthreads.h, [AC_DEFINE(WITH_THREAD)
    AC_DEFINE(C_THREADS)
    LIBOBJS="$LIBOBJS thread.o"],[
    AC_CHECK_LIB(pthread, pthread_create, [AC_DEFINE(WITH_THREAD)
    AC_DEFINE(_POSIX_THREADS)
    LIBS="-lpthread $LIBS"
    LIBOBJS="$LIBOBJS thread.o"],[
    AC_CHECK_FUNC(pthread_detach, [AC_DEFINE(WITH_THREAD)
    AC_DEFINE(_POSIX_THREADS)
    LIBOBJS="$LIBOBJS thread.o"],[
    AC_CHECK_HEADER(kernel/OS.h, [AC_DEFINE(WITH_THREAD)
    AC_DEFINE(BEOS_THREADS)
    LIBOBJS="$LIBOBJS thread.o"],[
    AC_CHECK_LIB(pthreads, pthread_create, [AC_DEFINE(WITH_THREAD)
    AC_DEFINE(_POSIX_THREADS)
    LIBS="$LIBS -lpthreads"
    LIBOBJS="$LIBOBJS thread.o"], [
    AC_CHECK_LIB(c_r, pthread_create, [AC_DEFINE(WITH_THREAD)
    AC_DEFINE(_POSIX_THREADS)
    LIBS="$LIBS -lc_r"
    LIBOBJS="$LIBOBJS thread.o"], [
    AC_CHECK_LIB(thread, __d6_pthread_create, [AC_DEFINE(WITH_THREAD)
    AC_DEFINE(_POSIX_THREADS)
    LIBS="$LIBS -lthread"
    LIBOBJS="$LIBOBJS thread.o"], [
    AC_CHECK_LIB(pth, pth_init, [AC_DEFINE(WITH_THREAD)
    AC_DEFINE(_GNU_PTH)
    LIBS="-lpth $LIBS"
    LIBOBJS="$LIBOBJS thread.o"],[
    AC_CHECK_LIB(cma, pthread_create, [AC_DEFINE(WITH_THREAD)
    AC_DEFINE(_POSIX_THREADS)
    LIBS="$LIBS -lcma"
    LIBOBJS="$LIBOBJS thread.o"],[
    USE_THREAD_MODULE="#"])
    ])])])])])])])])

    AC_CHECK_LIB(mpc, usconfig, [AC_DEFINE(WITH_THREAD)
    LIBS="$LIBS -lmpc"
    LIBOBJS="$LIBOBJS thread.o"
    USE_THREAD_MODULE=""])
    AC_CHECK_LIB(thread, thr_create, [AC_DEFINE(WITH_THREAD)
    LIBS="$LIBS -lthread"
    LIBOBJS="$LIBOBJS thread.o"
    USE_THREAD_MODULE=""])
fi

# Check for GC support
AC_SUBST(USE_GC_MODULE)
USE_GC_MODULE=""
AC_MSG_CHECKING(for --with-cycle-gc)
AC_ARG_WITH(cycle-gc,
[  --with(out)-cycle-gc            disable/enable garbage collection])

if test -z "$with_cycle_gc"
then with_cycle_gc="yes"
fi
if test "$with_cycle_gc" = "no"
then
    USE_GC_MODULE="#"
else
    AC_DEFINE(WITH_CYCLE_GC)
fi
AC_MSG_RESULT($with_cycle_gc)

# Check for LIBDB support
# either --with-libdb or, in its absence, the presence of db.h
AC_SUBST(USE_BSDDB_MODULE)
USE_BSDDB_MODULE=""
AC_MSG_CHECKING(for --with-libdb)
AC_ARG_WITH(libdb,
[  --with(out)-libdb               disable/enable bsddb module])

# enabled by default, but db.h must be found
if test "$ac_cv_header_db_h" = "yes"
then
    if test "$with_libdb" != "no"
    then with_libdb="yes"
    fi
else
    # make sure user knows why bsddb support wasn't enabled event
    # though s/he requested it
    if test "$with_libdb" = "yes"
    then echo $ac_n "(requested, but db.h was not found) $ac_c"
    fi
    with_libdb="no"
fi

if test "$with_libdb" = "no"
then
    USE_BSDDB_MODULE="#"
else
    AC_DEFINE(WITH_LIBDB)
fi
AC_MSG_RESULT($with_libdb)

if test "$with_libdb" = "yes"
then
    # check for libdb; BSD systems have the DB routines in libc  --tg
    AC_SUBST(HAVE_LIBDB)
    AC_CHECK_FUNC(dbopen, [HAVE_LIBDB=], AC_CHECK_LIB(db, dbopen, [HAVE_LIBDB=-ldb]))
fi

# Check for --with-wctype-functions
AC_MSG_CHECKING(for --with-wctype-functions)
AC_ARG_WITH(wctype-functions, 
[  --with-wctype-functions         use wctype.h functions], [
if test "$withval" != no
then AC_DEFINE(WANT_WCTYPE_FUNCTIONS) AC_MSG_RESULT(yes)
else AC_MSG_RESULT(no)
fi],
[AC_MSG_RESULT(no)])

# -I${DLINCLDIR} is added to the compile rule for importdl.o
AC_SUBST(DLINCLDIR)
DLINCLDIR=/

AC_MSG_CHECKING(for --with-sgi-dl)
AC_ARG_WITH(sgi-dl,
[  --with-sgi-dl=DIRECTORY         IRIX 4 dynamic linking], [
AC_MSG_RESULT($withval)
AC_DEFINE(WITH_SGI_DL)
DYNLOADFILE="dynload_dl.o"
dldir=$withval
if test -d "$dldir"
then LDFLAGS="$LDFLAGS -L$dldir"
else AC_ERROR(proper usage is --with-sgi-dl=DIRECTORY)
fi
DLINCLDIR=${dldir}
LIBS="$LIBS -ldl -lmld"], AC_MSG_RESULT(no))

AC_MSG_CHECKING(for --with-dl-dld)
AC_ARG_WITH(dl-dld, [  --with-dl-dld=DL_DIR,DLD_DIR    GNU dynamic linking], [
AC_MSG_RESULT($withval)
AC_DEFINE(WITH_DL_DLD)
DYNLOADFILE="dynload_dl.o"
dldir=`echo "$withval" | sed 's/,.*//'`
dlddir=`echo "$withval" | sed 's/.*,//'`
if test -d "$dldir" -a -d "$dlddir"
then LDFLAGS="$LDFLAGS -L$dldir -L$dlddir"
else AC_ERROR(proper usage is --with-dl-dld=DL_DIRECTORY,DLD_DIRECTORY)
fi
DLINCLDIR=${dldir}
LIBS="$LIBS -ldl -ldld"], AC_MSG_RESULT(no))

# the dlopen() function means we might want to use dynload_shlib.o. some
# platforms, such as AIX, have dlopen(), but don't want to use it.
AC_CHECK_FUNCS(dlopen)

# DYNLOADFILE specifies which dynload_*.o file we will use for dynamic
# loading of modules.
AC_SUBST(DYNLOADFILE)
AC_MSG_CHECKING(DYNLOADFILE)
if test -z "$DYNLOADFILE"
then
	case $ac_sys_system/$ac_sys_release in
	AIX*) DYNLOADFILE="dynload_aix.o";;
	BeOS*) DYNLOADFILE="dynload_beos.o";;
	hp*|HP*) DYNLOADFILE="dynload_hpux.o";;
	next/*) DYNLOADFILE="dynload_next.o";;
	*)
	# use dynload_shlib.c and dlopen() if we have it; otherwise stub
	# out any dynamic loading
	if test "$ac_cv_func_dlopen" = yes
	then DYNLOADFILE="dynload_shlib.o"
	else DYNLOADFILE="dynload_stub.o"
	fi
	;;
	esac
fi
AC_MSG_RESULT($DYNLOADFILE)
if test "$DYNLOADFILE" != "dynload_stub.o"
then
	AC_DEFINE(HAVE_DYNAMIC_LOADING)
fi

# checks for library functions
AC_CHECK_FUNCS(alarm chown clock confstr ctermid ctermid_r execv \
 flock fork fsync fdatasync fpathconf ftime ftruncate \
 getgroups getlogin getpeername getpid getpwent getwd \
 kill link lstat mkfifo mktime mremap \
 nice pathconf pause plock poll pthread_init \
 putenv readlink \
 select setegid seteuid setgid \
 setlocale setregid setreuid setsid setpgid setuid setvbuf \
 sigaction siginterrupt sigrelse strftime strptime symlink sysconf \
 tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \
 truncate uname waitpid _getpty)

# check for openpty and forkpty

AC_CHECK_FUNCS(openpty,, AC_CHECK_LIB(util,openpty, [AC_DEFINE(HAVE_OPENPTY)] [LIBS="$LIBS -lutil"]))
AC_CHECK_FUNCS(forkpty,, AC_CHECK_LIB(util,forkpty, [AC_DEFINE(HAVE_FORKPTY)] [LIBS="$LIBS -lutil"]))

# check for long file support functions
AC_CHECK_FUNCS(fseek64 fseeko fstatvfs ftell64 ftello statvfs)

AC_REPLACE_FUNCS(dup2 getcwd strdup strerror memmove)
AC_CHECK_FUNCS(getpgrp, AC_TRY_COMPILE([#include <unistd.h>], [getpgrp(0);], AC_DEFINE(GETPGRP_HAVE_ARG)))
AC_CHECK_FUNCS(setpgrp, AC_TRY_COMPILE([#include <unistd.h>], [setpgrp(0,0);], AC_DEFINE(SETPGRP_HAVE_ARG)))
AC_CHECK_FUNCS(gettimeofday, AC_TRY_COMPILE([#include <sys/time.h>], [gettimeofday((struct timeval*)0,(struct timezone*)0);], ,AC_DEFINE(GETTIMEOFDAY_NO_TZ)))

# checks for structures
AC_HEADER_TIME
AC_STRUCT_TM
AC_STRUCT_TIMEZONE

AC_MSG_CHECKING(for time.h that defines altzone)
AC_CACHE_VAL(ac_cv_header_time_altzone,
[AC_TRY_COMPILE([#include <time.h>], [return altzone;],
  ac_cv_header_time_altzone=yes,
  ac_cv_header_time_altzone=no)])
AC_MSG_RESULT($ac_cv_header_time_altzone)
if test $ac_cv_header_time_altzone = yes; then
  AC_DEFINE(HAVE_ALTZONE)
fi

was_it_defined=no
AC_MSG_CHECKING(whether sys/select.h and sys/time.h may both be included)
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/select.h>
#include <sys/time.h>
], [;], [AC_DEFINE(SYS_SELECT_WITH_SYS_TIME) was_it_defined=yes])
AC_MSG_RESULT($was_it_defined)

# checks for compiler characteristics

AC_C_CHAR_UNSIGNED
AC_C_CONST
AC_C_INLINE

works=no
AC_MSG_CHECKING(for working volatile)
AC_TRY_COMPILE([],[volatile int x; x = 0;], works=yes, AC_DEFINE(volatile, []))
AC_MSG_RESULT($works)

works=no
AC_MSG_CHECKING(for working signed char)
AC_TRY_COMPILE([], [signed char c;], works=yes, AC_DEFINE(signed, []))
AC_MSG_RESULT($works)

have_prototypes=no
AC_MSG_CHECKING(for prototypes)
AC_TRY_COMPILE([int foo(int x) { return 0; }], [return foo(10);],
AC_DEFINE(HAVE_PROTOTYPES) have_prototypes=yes)
AC_MSG_RESULT($have_prototypes)

works=no
AC_MSG_CHECKING(for variable length prototypes and stdarg.h)
AC_TRY_COMPILE([
#include <stdarg.h>
int foo(int x, ...) {
	va_list va;
	va_start(va, x);
	va_arg(va, int);
	va_arg(va, char *);
	va_arg(va, double);
	return 0;
}
], [return foo(10, "", 3.14);],
AC_DEFINE(HAVE_STDARG_PROTOTYPES) works=yes)
AC_MSG_RESULT($works)

if test "$have_prototypes" = yes; then
bad_prototypes=no
AC_MSG_CHECKING(for bad exec* prototypes)
AC_TRY_COMPILE([#include <unistd.h>], [char **t;execve("@",t,t);], ,
	AC_DEFINE(BAD_EXEC_PROTOTYPES) bad_prototypes=yes)
AC_MSG_RESULT($bad_prototypes)
fi

bad_forward=no
AC_MSG_CHECKING(for bad static forward)
AC_TRY_RUN([
struct s { int a; int b; };
static struct s foo;
int foobar() {
 static int random;
 random = (int) &foo;
 return random;
}
static struct s foo = { 1, 2 };
main() {
 exit(!((int)&foo == foobar()));
}
], , AC_DEFINE(BAD_STATIC_FORWARD) bad_forward=yes)
AC_MSG_RESULT($bad_forward)

va_list_is_array=no
AC_MSG_CHECKING(whether va_list is an array)
AC_TRY_COMPILE([
#ifdef HAVE_STDARG_PROTOTYPES
#include <stdarg.h>
#else
#include <varargs.h>
#endif
], [va_list list1, list2; list1 = list2;], , 
AC_DEFINE(VA_LIST_IS_ARRAY) va_list_is_array=yes)
AC_MSG_RESULT($va_list_is_array)

# sigh -- gethostbyname_r is a mess; it can have 3, 5 or 6 arguments :-(
AC_CHECK_FUNC(gethostbyname_r, [
  AC_DEFINE(HAVE_GETHOSTBYNAME_R)
  AC_MSG_CHECKING([gethostbyname_r with 6 args])
  OLD_CFLAGS=$CFLAGS
  CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
  AC_TRY_COMPILE([
#   include <netdb.h>
  ], [
    char *name;
    struct hostent *he, *res;
    char buffer[2048];
    int buflen = 2048;
    int h_errnop;

    (void) gethostbyname_r(name, he, buffer, buflen, &res, &h_errnop)
  ], [
    AC_DEFINE(HAVE_GETHOSTBYNAME_R)
    AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG)
    AC_MSG_RESULT(yes)
  ], [
    AC_MSG_RESULT(no)
    AC_MSG_CHECKING([gethostbyname_r with 5 args])
    AC_TRY_COMPILE([
#     include <netdb.h>
    ], [
      char *name;
      struct hostent *he;
      char buffer[2048];
      int buflen = 2048;
      int h_errnop;

      (void) gethostbyname_r(name, he, buffer, buflen, &h_errnop)
    ], [
      AC_DEFINE(HAVE_GETHOSTBYNAME_R)
      AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG)
      AC_MSG_RESULT(yes)
    ], [
      AC_MSG_RESULT(no)
      AC_MSG_CHECKING([gethostbyname_r with 3 args])
      AC_TRY_COMPILE([
#       include <netdb.h>
      ], [
        char *name;
        struct hostent *he;
        struct hostent_data data;

        (void) gethostbyname_r(name, he, &data);
      ], [
        AC_DEFINE(HAVE_GETHOSTBYNAME_R)
        AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG)
        AC_MSG_RESULT(yes)
      ], [
        AC_MSG_RESULT(no)
      ])
    ])
  ])
  CFLAGS=$OLD_CFLAGS
], [
  AC_CHECK_FUNCS(gethostbyname)
])
AC_SUBST(HAVE_GETHOSTBYNAME_R_6_ARG)
AC_SUBST(HAVE_GETHOSTBYNAME_R_5_ARG)
AC_SUBST(HAVE_GETHOSTBYNAME_R_3_ARG)
AC_SUBST(HAVE_GETHOSTBYNAME_R)
AC_SUBST(HAVE_GETHOSTBYNAME)

# checks for system services
# (none yet)

# Linux requires this for correct f.p. operations
AC_CHECK_FUNC(__fpu_control,
  [],
  [AC_CHECK_LIB(ieee, __fpu_control)
])

# Check for --with-fpectl
AC_MSG_CHECKING(for --with-fpectl)
AC_ARG_WITH(fpectl,
[  --with-fpectl                   enable SIGFPE catching], [
if test "$withval" != no
then AC_DEFINE(WANT_SIGFPE_HANDLER) AC_MSG_RESULT(yes)
else AC_MSG_RESULT(no)
fi],
[AC_MSG_RESULT(no)])

# check for --with-libm=...
AC_SUBST(LIBM)
case $ac_sys_system in
next) ;;
BeOS) ;;
*) LIBM=-lm
esac
AC_MSG_CHECKING(for --with-libm=STRING)
AC_ARG_WITH(libm, [  --with-libm=STRING              math library], [
if test "$withval" = no
then LIBM=
     AC_MSG_RESULT(force LIBM empty)
elif test "$withval" != yes
then LIBM=$withval
     AC_MSG_RESULT(set LIBM=\"$withval\")
else AC_ERROR(proper usage is --with-libm=STRING)
fi],
[AC_MSG_RESULT(default LIBM=\"$LIBM\")])

# check for --with-libc=...
AC_SUBST(LIBC)
AC_MSG_CHECKING(for --with-libc=STRING)
AC_ARG_WITH(libc, [  --with-libc=STRING              C library], [
if test "$withval" = no
then LIBC=
     AC_MSG_RESULT(force LIBC empty)
elif test "$withval" != yes
then LIBC=$withval
     AC_MSG_RESULT(set LIBC=\"$withval\")
else AC_ERROR(proper usage is --with-libc=STRING)
fi],
[AC_MSG_RESULT(default LIBC=\"$LIBC\")])

# check for hypot() in math library
LIBS_SAVE=$LIBS
LIBS="$LIBS $LIBM"
AC_REPLACE_FUNCS(hypot)
LIBS=$LIBS_SAVE

# check for getopt
AC_MSG_CHECKING(for genuine getopt)
AC_CACHE_VAL(ac_cv_func_getopt,
[AC_TRY_RUN([#include <stdio.h>
extern int optind, opterr, getopt();
extern char* optarg;
int main() {
	char* av[] = { "testprog", "parameter", "-fFlag", NULL };
	opterr = 0;
	if (getopt(3, av, "f:") == 'f') { exit(1); }
	exit(0);
}], ac_cv_func_getopt=yes, ac_cv_func_getopt=no, ac_cv_func_getopt=no)])dnl
AC_MSG_RESULT($ac_cv_func_getopt)
test $ac_cv_func_getopt = no && LIBOBJS="$LIBOBJS getopt.o"
AC_SUBST(LIBOBJS)dnl

# check whether malloc(0) returns NULL or not
AC_MSG_CHECKING(what malloc(0) returns)
AC_CACHE_VAL(ac_cv_malloc_zero,
[AC_TRY_RUN([#include <stdio.h>
#ifdef HAVE_STDLIB
#include <stdlib.h>
#else
char *malloc(), *realloc();
int *free();
#endif
main() {
	char *p;
	p = malloc(0);
	if (p == NULL) exit(1);
	p = realloc(p, 0);
	if (p == NULL) exit(1);
	free(p);
	exit(0);
}], ac_cv_malloc_zero=nonnull, ac_cv_malloc_zero=null)])
AC_MSG_RESULT($ac_cv_malloc_zero)
if test "$ac_cv_malloc_zero" = null
then
  AC_DEFINE(MALLOC_ZERO_RETURNS_NULL)
fi

# check for wchar.h
AC_CHECK_HEADER(wchar.h,
AC_DEFINE(HAVE_WCHAR_H) wchar_h="yes",
wchar_h="no"
)

# check for usable wchar_t
usable_wchar_t="unkown"
AC_MSG_CHECKING(for usable wchar_t)
AC_TRY_RUN([
#include "wchar.h"
#include "wctype.h"
main() {
 wchar_t s;
 if (sizeof(s) == 2)
  exit(0);
 else
  exit(1);
}
], 
AC_DEFINE(HAVE_USABLE_WCHAR_T) usable_wchar_t="yes",
usable_wchar_t="no")
AC_MSG_RESULT($usable_wchar_t)

# check for endianness
AC_C_BIGENDIAN

# Check whether right shifting a negative integer extends the sign bit
# or fills with zeros (like the Cray J90, according to Tim Peters).
AC_MSG_CHECKING(whether right shift extends the sign bit)
AC_CACHE_VAL(ac_cv_rshift_extends_sign, [
AC_TRY_RUN([
int main()
{
	exit(((-1)>>3 == -1) ? 0 : 1);
}
], ac_cv_rshift_extends_sign=yes, ac_cv_rshift_extends_sign=no)])
AC_MSG_RESULT($ac_cv_rshift_extends_sign)
if test "$ac_cv_rshift_extends_sign" = no
then
  AC_DEFINE(SIGNED_RIGHT_SHIFT_ZERO_FILLS)
fi


# THIS MUST BE LAST, IT CAN BREAK OTHER TESTS!
# Add sys/socket.h to confdefs.h
cat >> confdefs.h <<\EOF
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
EOF
AC_CHECK_TYPE(socklen_t, int)

# generate output files
AC_OUTPUT(Makefile \
 Objects/Makefile \
 Parser/Makefile \
 Grammar/Makefile \
 Python/Makefile \
 Modules/Makefile.pre \
 Modules/Setup.config)