APACHE 2.1 STATUS: -*-text-*- Last modified at [$Date: 2003/02/18 21:06:15 $] Release [NOTE that only Alpha/Beta releases occur in 2.1 development]: 2.1.0 : in development Please consult the following STATUS files for information on related projects: * srclib/apr/STATUS * srclib/apr-util/STATUS * docs/STATUS Contributors looking for a mission: * just do an egrep on "TODO" or "XXX" and see what's there CURRENT RELEASE NOTES: RELEASE SHOWSTOPPERS: CURRENT VOTES: * httpd-std.conf and friends a) httpd-std.conf should be tailored by install (from src or binbuild) even if user has existing httpd.conf +1: trawick, slive, gregames, ianh, Ken, wrowe, jwoolley, jim, nd wrowe - prefer httpd.default.conf to avoid ambiguity with cvs b) tailored httpd-std.conf should be copied by install to sysconfdir/examples -0: striker c) tailored httpd-std.conf should be installed to sysconfdir/examples or manualdir/exampleconf/ +1: slive, trawick, Ken, nd (prefer the latter) d) Installing a set of default config files when upgrading a server doesn't make ANY sense at all. +1: ianh - medium/big sites don't use 'standard config' anyway, as it usually needs major customizations -1: Ken, wrowe, jwoolley, jim, nd wrowe - diff is wonderful when comparing old/new default configs, even for customized sites that ianh mentions jim - ... assuming that the default configs have been updated with the required inline docs to explain the changes * If the parent process dies, should the remaining child processes "gracefully" self-terminate. Or maybe we should make it a runtime option, or have a concept of 2 parent processes (one being a "hot spare"). See: Message-ID: <3C58232C.FE91F19F@Golux.Com> Self-destruct: Ken, Martin Not self-destruct: BrianP, Ian, Cliff, BillS Make it runtime configurable: Aaron, jim, Justin, wrowe, rederpj, nd /* The below was a concept on *how* to handle the problem */ Have 2 parents: +1: jim -1: Justin, wrowe, rederpj, nd +0: Martin (while standing by, could it do something useful?) * Make the worker MPM the default MPM for threaded Unix boxes. +1: Justin, Ian, Cliff, BillS, striker, wrowe, nd +0: BrianP, Aaron (mutex contention is looking better with the latest code, let's continue tuning and testing), rederpj, jim -0: Lars RELEASE NON-SHOWSTOPPERS BUT WOULD BE REAL NICE TO WRAP THESE UP: * There is a bug in how we sort some hooks, at least the pre-config hook. The first time we call the hooks, they are in the correct order, but the second time, we don't sort them correctly. Currently, the modules/http/config.m4 file has been renamed to modules/http/config2.m4 to work around this problem, it should moved back when this is fixed. OtherBill offers that this is a SERIOUS problem. We do not sort correctly by the ordering arguments passed to the register hook functions. This was proven when I reordered the open_logs hook to attempt to open the error logs prior to the access logs. Possibly the entire sorting code needs to be refactored. * pipes deadlock on all platforms with limited pipe buffers (e.g. both Linux and Win32, as opposed to only Win32 on 1.3). The right solution is either GStein's proposal for a "CGI Brigade", or OtherBill's proposal for "Poll Buckets" for "Polling Filter Chains". Or maybe both :-) * All handlers should always send content down even if r->header_only is set. If not, it means that the HEAD requests don't generate the same headers as a GET which is wrong. * HP/UX 10.20: compile breakage in APR. Looks like it should be easy to fix, probably just some extraneous #include's that are fouling things up. PR: 9457 Jeff: See my reply and patch in the PR (and previous commit to stop using "pipe" as a field name). If patch is committed, we should be okay. I'll wait to see if the user tests the patch. Update by Jeff 20020722: I got an account on HP 10.20. It looks like some of the APR thread detection is screwed up. If we find pthread.h but we can't compile the pthread test program we still think we can use threads. For that reason, the patch I posted to the PR won't work as-is since a failed compile of the test program means nothing. * exec cmd and suexec arg-passing enhancements Status: Patches proposed Message-ID: <20020526041748.A29148@prodigy.Redbrick.DCU.IE> (see the "proc.patch" and "suexec-shell.patch" links in this message) * The 2.0.36 worker MPM graceless shutdown changes work but are a bit clunky on some platforms; eg, on Linux, the loop to join each worker thread seems to hang, and the parent ends up killing off the child with SIGKILL. But at least it shuts down. * --enable-mods-shared="foo1 foo2" is busted on Darwin. Pier posted a patch (Message-ID: ). * We do not properly substitute the prefix-variables in the configuration scripts or generated-configs. (i.e. if sysconfdir is etc, httpd-std.conf points to conf.) * If any request gets through ap_process_request_internal() and is scheduled to be served by the core handler, without a flag that this r->filename was tested by dir/file_walk, we need to 500 at the very end of the ap_process_request_internal() processing so sub_req-esters know this request cannot be run. This provides authors of older modules better compatibility, while still improving the security and robustness of 2.0. Status: still need to decide where this goes, OtherBill comments... Message-ID: <065701c14526$495203b0$96c0b0d0@roweclan.net> [Deleted comments regarding the ap_run_handler phase, as irrelevant as BillS points out that "common case will be caught in default_handler already (with the r->finfo.filetype == 0 check)" and the issue is detecting this -before- we try to run the req.] gregames says: can this happen somehow without a broken module being involved? If not, why waste cycles trying to defend against potential broken modules? It seems futile. wrowe counters: no, it shouldn't happen unless the module is broken. But the right answer is to fail the request up-front in dir/file walk if the path was entirely invalid; and we can't do that either UNTIL 2.1 or we break modules that haven't hooked map_to_storage. * With AP_MODE_EXHAUSTIVE in the core, it is finally clear to me how the Perchild MPM should be re-written. It hasn't worked correctly since filters were added because it wasn't possible to get the content that had already been written and the socket at the same time. This mode lets us do that, so the MPM can be fixed. * htpasswd blindly processes the file you give it, and does no sanity checking before totally corrupting whatever file it was you thought you had. It should check the input file and bail if it finds non-comment lines that do not contain exactly 1 ':' character. Message-ID: <20020217150457.A31632@clove.org> * Can a static httpd be built reliably? Message-ID: <20020207142751.T31582@clove.org> * [Ken] Test suite failures: o worker is also failing some of the 'cgi' subtests (see ): Justin says: "Worker should be fine and passes httpd-test here. I think it's a perl or a httpd-test problem." * Usage of APR_BRIGADE_NORMALIZE in core_input_filter should be removed if possible. Message-ID: Jeff wonders if we still care about this. It is no longer an API issue but simply an extra trip through the brigade. * The Add...Filter and Set...Filter directives do not allow the administrator to order filters, beyond the order of filename (mime) extensions. It isn't clear if Set...Filter(s) should be inserted before or after the Add...Filter(s) which are ordered by sequence of filename extensions. At minimum, some sort of +-[0-10] syntax seems like a nice solution. See ROADMAP. * Get perchild to work on platforms other than Linux. This will require a portable mechanism to pass data and file/socket descriptors between vhost child groups. An API was proposed on dev@apr: Message-ID: <20020111115006.K1529@clove.org> * Try to get libtool inter-library dependency code working on AIX. Message-ID: Justin says: If we get it working on AIX, we can enable this on all platforms and clean up our build system somewhat. Jeff says: I thought I tested a patch for you sometime in January that you were going to commit within a few days. * Handling of %2f in URIs. Currently both 1.3 and 2.0 completely disallow %2f in the request URI path (see ap_unescape_url() in util.c). It's permitted and passed through in the query string, however. Roy says the original reason for disallowing it, from five years ago, was to protect CGI scripts that applied PATH_INFO to a filesystem location and which might be tricked by ..%2f..%2f(...). We *should* allow path-info of the form 'http://foo.com/index.cgi/path/to/path%2finfo'. Since we've revamped a lot of our processing of path segments, it would be nice to allow this, or at least allow it conditionally with a directive. OtherBill adds that %2f as the SECOND character of a multibyte sequence causes the request to fail! This happens notably in the ja-jis encoding. * FreeBSD, threads, and worker MPM. All seems to work fine if you only have one worker process with many threads. Add a second worker process and the accept lock seems to be lost. This might be an APR issue with how it deals with the child_init hook (i.e. the fcntl lock needs to be resynced). More examination and analysis is required. Status: This has also been reported on Cygwin. FreeBSD 4.7 was reputed to have 'fixed' threads. Not. Message-ID: <3C2CC514.8EF3BED1@wapme-systems.de> (cygnus) Aaron says: I spent some time disecting this and have come to the conclusion that it is not a problem in the worker MPM (or at least, it is not isolated to a problem in worker). I'll list some of the problems I'm seeing in case someone else wants to pick up where I've left off: - Delivery of just about any signal to one of the child processes will send it into an infinite loop as well. - Even though the parent is spinning out of control, at first the child or children will appear to work properly. At times it is possible to get it into a state, however, where a request will hang until another concurrent request "kicks" the first, at which point the second will hang. My theory is that this has to do with the pthread_cond_*() implementation in FreeBSD, but it's still possible that it is in APR. Justin adds: Oh, FreeBSD threads are implemented entirely with select()/poll()/longjmp(). Welcome to the nightmare. So, that means a ktrace output also has the thread scheduling internals in it (since it is all the same to the kernel). Which makes it hard to distinguish between our select() calls and their select() calls. *bangs head on wall repeatedly* But, some of the libc_r files have a DBG_MSG #define. This is moderately helpful when used with -DNO_DETACH. The kernel scheduler isn't waking up the threads on a select(). Yum. And, I bet those decrementing select calls have to do with the scheduler. Time to brush up on our OS fundamentals. * There is increasing demand from module writers for an API that will allow them to control the server à la apachectl. Reasons include sole-function servers that need to die if an external dependency (e.g., a database) fails, et cetera. Perhaps something in the (ever more abused) scoreboard? On the other hand, we already have a pipe that goes between parent and child for graceful shutdown events, along with an API that can be used to send a message down that pipe. In threaded MPMs, it is easy enough to make that one pipe be used for graceful and graceless events, and it is also easy to open that pipe to both parent and child for writing. Then we just need to figure out how to do graceless on non-threaded MPMs. * Allow the DocumentRoot directive within scopes? This allows the beloved (crusty) Alias /foo/ /somepath/foo/ followed by a to become simply DocumentRoot /somefile/foo (IMHO a bit more legible and in-your-face.) DocumentRoot unset would be accepted [and would not permit content to be served, only virtual resources such as server-info or server-status. This proposed change would _not_ depricate Alias. striker: See the thread starting with Message-ID: JLEGKKNELMHCJPNMOKHOGEEJFBAA.striker@apache.org. * Win32: Rotatelogs sometimes is not terminated when Apache goes down hard. FirstBill was looking at possibly tracking the child's-child processes in the parent process. stoddard: Shared scoreboard might offer a good way for the parent to keep track of 'other child' processes and whack them if the child goes down. Other thoughts on walking the process chain using the NT kernel have also been proposed on APR. * Eliminate unnecessary creation of pipes in mod_cgid * Combine log_child and piped_log_spawn. Clean up http_log.c. Common logging API. * Platforms that do not support fork (primarily Win32 and AS/400) Architect start-up code that avoids initializing all the modules in the parent process on platforms that do not support fork. * There are still a number of places in the code where we are losing error status (i.e. throwing away the error returned by a system call and replacing it with a generic error code) * Mass vhosting version of suEXEC. * All DBMs suffer from confusion in support/dbmmanage (perl script) since the dbmmanage employs the first-matched dbm format. This is not necessarily the library that Apache was built with. Aught to rewrite dbmmanage upon installation to bin/ with the proper library for predictable mod_auth_dbm administration. Questions; htdbm exists, time to kill dbmmanage, or does it remain useful as a perl dbm management example? If we keep it, do we address the issue above? * Integrate mod_dav. Some additional items remaining: - case_preserved_filename stuff (use the new canonical name stuff?) - find a new home for ap_text(_header) - is it possible to remove the DAV: namespace stuff from util_xml? * ap_core_translate() and its use by mod_mmap_static and mod_file_cache are a bit wonky. The function should probably be exposed as a utility function (such as ap_translate_url2fs() or ap_validate_fs_url() or something). Another approach would be a new hook phase after "translate" which would allow the module to munge what the translation has decided to do. Status: Greg +1 (volunteers) * Explore use of a post-config hook for the code in http_main.c which calls ap_fixup_virutal_hosts(), ap_fini_vhost_config(), and ap_sort_hooks() [to reduce the logic in main()] * read the config tree just once, and process N times (as necessary) * (possibly) use UUIDs in mod_unique_id and/or mod_usertrack * (possibly) port the bug fix for PR 6942 (segv when LoadModule is put into a VirtualHost container) to 2.0. * shift stuff to mod_core.h * callers of ap_run_create_request() should check the return value for failure (Doug volunteers) * Win32: Get Apache working on Windows 95/98. The following work (at least) needs to be done: - Document warning that OSR2 is required (for Crypt functions, in rand.c, at least.) This could be resolved with an SSL library, or randomization in APR itself. - Bring the Win9xConHook.dll from 1.3 into 2.0 (no sense till it actually works) and add in a splash of Win9x service code. * Fix the worker MPM to use POD to kill child processes instead of ap_os_killpg, regardless of how they should die. * Scoreboard structures could be changed in the future such that proper alignment is not maintained, leading to segfaults on some systems. Cliff posted a patch to deal with this issue but later recanted. See this message to dev@apr.apache.org: Message-ID: * When sufficiently tested, the AllowEncodedSlashes/%2f patch needs to be backported to 2.0 and 1.3. TODO ISSUES REMAINING IN MOD_SSL: * In order to use a DSO version of mod_ssl we have to link with -lssl and -lcrypto. A workaround is in place right now where the entire EXTRA_LIBS macro is being appended to the objects list, but this is a hack. We should either revamp the APACHE_CHECK_SSL_TOOLKIT autoconf function or come up with some other autoconf checks to search for libssl and libcrypto and properly add them to mod_ssl's link flags. * SSL renegotiations in combination with POST request * Port or dispose all code inside #if 0...#endif blocks that remain from the porting effort. * Do we need SSL_set_read_ahead()? * the ssl_expr api is NOT THREAD SAFE. race conditions exist: -in ssl_expr_comp() if SSLRequire is used in .htaccess (ssl_expr_info is global) -is ssl_expr_eval() if there is an error (ssl_expr_error is global) * SSLRequire directive (parsing of) leaks memory * Diffie-Hellman-Parameters for temporary keys are hardcoded in ssl_engine_dh.c, while the comment in ssl_engine_kernel.c says: "it is suggested that keys be changed daily or every 500 transactions, and more often if possible." * ssl_var_lookup could be rewritten to be MUCH faster * CRL callback should be pluggable * session cache store should be pluggable * init functions should return status code rather than ssl_die() * ssl_engine_pphrase.c needs to be reworked so it is generic enough to also decrypt proxy keys * the shmcb code should just align its memory segment rather than jumping through all the "safe" memcpy and memset hoops WISH LIST * mod_proxy performance: when mod_proxy is configured to do proxy gateway (aka reverse proxy), it would be nice to be able to reuse connections to the backend servers. Now, connections to the backend servers are taken down when the corresponding frontend connection is taken down. * mod_proxy: Ability to run SSL over proxy gateway connections, encrypting (or reencrypting) at the proxy. * mod_proxy: Add capability of mod_proxy to load balance across a farm of backend servers. * mod_cache: Handle ESI tags. EXPERIMENTAL MODULES: Experimental modules should eventually be be promoted to fully supported status or removed from the repository entirely (ie, the 'experiment' failed). This section tracks what needs to happen to get the modules promoted to fully supported status. mod_cache/mod_mem_cache/mod_disk_cache: * mod_cache: handle cache_control: no_cache "field_name" to enable cacheing the response w/o header "field_name" See RFC2616 section 14.9.1 * mod_mem_cache: Consider adding a RevalidateTimeout directive to specify time at which local cached content is to be revalidated (ie, underlying file stat'ed to see if it has changed). * mod_cache: CacheEnable/CacheDisable should accept regular expressions. * mod_cache: Fix dependency on ATOMIC operators. Need APR_HAS_ATOMIC_* feature macros. * mod_disk_cache: Implement garbage collection * mod_mem_cache/mod_disk_cache: Need to be able to query cache status (num of entries, cache object properties, etc.). mod_status could be extended to query optional hooks defined by modules for the purpose of reporting module status. mod_cache (et. al.) could define optional hooks that are called to collect status. Status should be queryable by HTTP or SNMP? * Enable mod_cache/mod_mem_cache/mod_disk_cache to handle multiviews * mod_mem_cache/mod_disk_cache: Complete implementing config directives (mod_disk_cache: CacheExpiryCheck and GC directives including CacheGc*, CacheSize, and, CacheTimeMargin) (mod_mem_cache: MCacheMaxObjectCount) and (mod_cache: CacheForceCompletion). mod_auth_ldap/util_ldap: * Backport cross-platform/cross-library TLS support to 2.0 tree * General stabilization and testing PRs that have been suspended forever waiting for someone to put them into 'the next release': * documentation and Q&A PR#2221: Make online documentation search link back to my installation Status: PR#2906: Propose that Apache recommend $UNIQUE_ID for all "session id" algorithms Status: PR#2793: When will Apache support P3P? Any Plans? Status: * build PR#2113: HTTP Server Rebuild Line Needs Changing for the better Status: PR#2421: problem specifying ndbm library for build ?with autoconfigure Status: * config PR#76: missing call to "setlocale();" Status: PR#628: Request of "Options SymLinksIfGroupMatch" Status: PR#793: RLimitCPU and RLimitMEM don't apply to all children like they should Status: PR#922: it is useful to allow specifiction that root-owned symlinks should always be followed Status: PR#1028: DoS attacks involving memory consumption Status: PR#1191: setlogin() is not called, causing problems with e.g. identd Status: PR#1204: regerror() exists, use it Status: PR#2284: Can not POST to ErrorDocument - Apache/1.3b6 Status: PR#2396: Proposal for TimeZone directive Status: PR#2446: AllowOverride FileInfo is too coarse Status: PR#2760: [PATCH] User/Group for and i.e. not only in global and . Status: PR#2907: suggestion: power up your Include directive :) Status: PR#3018: cannot limit some HTTP methods Status: PR#3677: New ErrorDocumentMatch directive Status: PR#4244: "Files" and "FilesMatch" regexp does not recognize bang as negation operator Status: PR#5993: AllowOverride should have a 'CheckNone' and 'AllowNone' argument instead of only 'None' Status: * mod_access PR#537: mod_access syntax allows hosts that should be restricted Status: PR#1287: add allow,deny/deny,allow warning to mod_access Status: PR#2512: directive wanted Status: * mod_auth-any PR#557: ~UserHome directories are not honored in absolute pathname requests (.htaccess) Status: PR#1117: Using NIS passwd.byname dbm files with AuthDBMUserFile Status: PR#1809: Suggestion for improving authentication modules and core source code, problem with 401 and ErrorDocument Status: * mod_autoindex PR#1263: Add frame-safe anchor attribute to mod_autoindex links Status: * mod_cgi (and suexec) PR#921: suexec Uses cwd before filling it in, doesn't use syslog Status: PR#1176: Apache cannot handle continuation line in headers Status: PR#1120: suexec does not parse arguments to #exec cmd Status: PR#1268: CGI scripts running as Apache user: security (suexec etc.) Status: PR#1285: Error messages could be easier to spot in cgi.log file for suexec.c Status: PR#1905: suexec - Allow modules to set user:group for execution. Status: PR#2360: suexec for general access of user content? Status: PR#2460: TimeOut applies to output of CGI scripts Status: PR#2573: CGI's for general use still have to be run as another user with suExec Status: PR#4241: Need to be able to override shebang line to make CGI scripts more portable. Status: PR#4490: mod_cgi prevents handling of OPTIONS requests Status: * mod_env PR#370: Modified PATH environemnt variable is not passed, instead system's is used Status: * mod_headers PR#1383: I make mod_headers to modify request headers as well as response ones. Status: PR#1677: mod_headers should allow mod_log_config-style formats in header values Status: * mod_imap PR#759: imap should read * too! Status: * mod_include PR#78: Additional status for XBitHack directive Status: PR#623: A smarter "Last Modified" value for SSI documents (see PR number 600) Status: PR#1145: mod_include Allow for Last-Modified: without resorting to XBitHack Status: PR#1803: patches to mod_include to allow for file tests Status: PR#4459: Suggestion for better handling of Last-modified headers Status: * mod_info PR#2415: /server-info doesn't check for the virtual host to list the info Status: * mod_log-any PR#1050: Logging of virtual server to error_log as well Status: PR#1358: Selective url-encode of log fields (or maybe a pseudo log_rewrite module?) Status: PR#2073: pipelined connections are not logged correctly Status: PR#4448: Please allow CGI env variables (QUERY_STRING, ...) to be logged with %{}e Status: * mod_negotiation PR#3191: no way to set global quality-of-source (qs) coneg values with multiviews Status: * mod_proxy PR#362: Mod_proxy doesn't allow change of error pages Status: PR#440: Proxy doesn't deliver documents if not connected Status: PR#534: proxy converts ~name to %7Ename when name starts with a dot (.) Status: PR#612: Proxy FTP Authentication Fails Status: PR#700: Proxy doesn't do links right for OpenVMS files through ftp: Status: PR#980: Controlling Access to Remote Proxies would be nice... Status: PR#994: Adding authentication "on the fly" through the proxy module Status: PR#1085: ProxyRemote make a dead cycle. Status: PR#1166: ``nph-'' not honored (no buffering) for ProxyRemote mapping Status: PR#1290: Need to know "hit-rate" on proxy cache Status: PR#1532: Proxy transfer logging Status: PR#1547: No HTTP_X_FORWARDED_FOR set... Status: PR#1567: ProxyRemote proxy requests fail authentication by firewall Status: PR#1702: mod_proxy to support persistent conns? Status: PR#1878: listing of proxy cache content Status: PR#2314: patterns in ProxyRemote Status: PR#2648: Cache file names in Proxy module Status: PR#3568: Accessing URL through proxy server corrupts data. Status: PR#3605: Some anonymous FTP URLs ask for authentication Status: * mod_rewrite PR#1582: mod_rewrite forms REQUEST_URI different than mod_cgi does Status: PR#2074: mod_rewrite doesn't pass Proxy Throughput on internal subrequests Status: * mod_status PR#2138: mod_status always displays 256 possible connection slots Status: PR#2343: Status module averages are for entire uptime Status: * apache-api PR#1004: request_config field in request_rec is moderately bogus Status: PR#1158: improvements to child spawning API Status: PR#1233: there is no way to keep per-connection per-module state Status: PR#2024: adding auth_why to conn_rec Status: PR#2873: Feedback/Comment on APACI Status: PR#3143: No module specific data hook for per-connection data Status: * generally odds and ends PR#2431: A small addition to rotatelogs.c to improve program functionality. Status: PR#2763: mailto tags and bundling bug report script Status: PR#2785: os-aix Support for System Resource Controller Status: PR#2889: Inclusion of RPM spec file in CVS/distributions Status: PR#5713: os-windows [PATCH] install as win32 service with domain account Status: Cannot accept password-as-arg, we should prompt the user when -k install/-k config with a user argument. Other bugs that need fixing: * ap_discard_request should be converted to use the bucket API directly rather than waste cycles copying buffers with the old API. * MaxRequestsPerChild measures connections, not requests. Until someone has a better way, we'll probably just rename it "MaxConnectionsPerChild". * Regex containers don't work in an intutive way Status: No one has come up with an efficient way to fix this behavior. Dean has suggested getting rid of regex containers completely. OtherBill suggests: We at least seem to agree on eliminating the forms, and using only semantics. * SIGSEGV on Linux (glibc 2.1.2) isn't caught properly by a sigwaiting thread. We need to work around this, perhaps unless there is hope soon for a fixed glibc. * orig_ct in the byterange/multipart handling may not be needed. Apache 1.3 just never stashed "multipart" into r->content_type. We should probably follow suit since the byterange stuff doesn't want the rest of the code to see the multipart content-type; the other code should still think it is dealing with the stuff. Status: Greg volunteers to investigate (esp. since he was most likely the one to break it :-) Binaries (probably not till beta): Platform Avail. Volunteer ------------------------------------------------------------------ AIX 4.3.3 no Bill Stoddard Mandrake 8.1 no open FreeBSD 4.1 no open hppa2.0w-hp-hpux11.00 no Cliff Woolley i386-pc-solaris2.8 no Aaron Bannert i386-unknown-freebsd4.5 no i386-unknown-freebsd4.6 no Cliff Woolley i686-pc-linux-gnu-slackware81 no Cliff Woolley i686-pc-linux-gnu-rh70 no Aaron Bannert i686-pc-linux-gnu-rh73 no Cliff Woolley ia64-hp-hpux11.20 no powerpc-apple-darwin5.5 no Aaron Bannert powerpc-unknown-linux-gnu no Graham Leggett s390-ibm-linux no Greg Ames sparc-sun-solaris2.8 no Jim Jagielski NetWare no Brad Nicholes OS/2 no Brian Havard OS/390 no Greg Ames Win32-x86 no William Rowe