[Zlib-devel] zlib 1.2.2.3 available for testing: OSF/1 4.0 Alpha failure

[Nelson H. F. Beebe]

Thanks, Mark, for the further analysis of the differences between zlib
version 1.2.2 and 1.2.2.3 on the DEC Alpha OSF/1 4.0 system.

Apart from historical Unix systems running on simulators, this is the
ONLY one of more than 20 flavors of Unix to which I have access that
does not have snprintf(), but zlib is already prepared to handle that.

For other packages, I have two installed libraries, one compiled
with native cc, and the other with gcc, with these contents:

	% nm /usr/local/lib/libsnprintf.a | grep ' T '
	0000000000000000 T snprintf
	0000000000000070 T vsnprintf

	% nm /usr/local/lib/libgccsnprintf.a | grep ' T '
	0000000000000000 T snprintf
	0000000000000070 T vsnprintf

The source code distribution used to prepare those two libraries comes
from

	http://www.ijs.si/software/snprintf/snprintf_2.2.tar.gz

However, the zlib builds do not use those libraries.

>> zlib version 1.2.2 = 0x1220, compile flags = 0x20000a9
>> zlib version 1.2.2.3 = 0x1223, compile flags = 0x30000a9
>> ... The 0x2... means 1.2.2 used vsprintf(), whereas 0x3... means 
>> 1.2.2.3 used sprintf().

Are those flags officially documented outside the code in the function
zlibCompileFlags() in zutil.c, and the comments embedded in zlib.h?

An alternate approach to this issue is exhibited by kermit:

	kermit> show features
	...
	C-Kermit 8.0.211 Beta.02, 5 Mar 2004

	Major optional features included:
	 Network support (type SHOW NET for further info)
	 Telnet Kermit Option
	 Telnet Remote Com Port Control Option
	 Built-in FTP client
	 Built-in HTTP client
	...
	Target: dec-osf30
	Compiled Mar  6 2004 18:57:57, options:

	__ALPHA __alpha __DECC __DECC_VER=50990005 __osf__ _ANSI_C_SOURCE _BSD
	_POSIX_JOB_CONTROL _POSIX_OPEN_MAX=16 _POSIX_SOURCE _SC_JOB_CONTROL
	_XOPEN_SOURCE ARRAYREFLEN=1024 BIGBUFOK BROWSER BSD4 CK_ANSIC
	CK_ANSILIBS CK_APC CK_AUTODL CK_CURSES CK_DNS_SRV CK_ENVIRONMENT
	CK_FAST CK_LOGIN CK_MKDIR CK_NAWS CK_PCT_BAR CK_PERMS CK_RECALL
	CK_RTSCTS CK_SPEED CK_TIMERS CK_TMPDIR CK_TTGWSIZ CK_TTYFD CK_WREFRESH
	CKEXEC CKFLOAT=float CKHTTP CKLEARN ckmaxfiles=4096 CKMAXOPEN=64
	CKMAXPATH=1024 CKREGEX CKSYSLOG CKTUNING CMDBL=32763 CMDDEP=64 CONGSPD
	DCMDBUF DEVNAMLEN=1024 DYNAMIC FD_SETSIZE=4096 FNFLOAT FOPEN_MAX=64
	FORDEPTH=32 GFTIMER h_addr HADDRLIST IFDEBUG IKS_OPTION IKSDB IKSDCONF
	INBUFSIZE=32768 INCL_PARAM_H INPBUFSIZ=4096 MAC_MAX=16384 MACLEVEL=128
	MAXDDIR=32 MAXDNUMS=4095 MAXGETPATH=128 MAXPATHLEN=1024 MAXTAKE=54
	MAXWLD=102400 MDMHUP MSENDMAX=1024 NETCMD NETCONN NEWFTP NOKVERBS
	NOSETBUF OBUFSIZE=32768 OS2ORUNIX OSF PARSENSE PATTERNS PIPESEND
	SELECT SIG_V SO_DONTROUTE SO_KEEPALIVE SO_LINGER SO_OOBINLINE
	SO_RCVBUF SO_SNDBUF SOL_SOCKET STREAMING SYSTIMEBH SYSTIMEH
	TCP_NODELAY TCPSOCKET TIMEH TLOG TN_COMPORT TNCODE TTLEBUF TTSPDLIST
	UIDBUFLEN=256 UNIX UNPREFIXZERO USE_MEMCPY UTIMEH VMSORUNIX VNAML=4096
	WHATAMI XFRCAN XPRINT Z_MAXCHAN=46 z_maxchan=46 ZXREWIND

	 byte order: little endian

	 sizeofs: int=4 long=8 short=2 char=1 char*=8 float=4 double=8

	 floating-point: precision=16 rounding=1

Perhaps the zlib compilation flags aren't needed often enough to
warrant such fancy treatment.

-------------------------------------------------------------------------------
- Nelson H. F. Beebe                    Tel: +1 801 581 5254                  -
- University of Utah                    FAX: +1 801 581 4148                  -
- Department of Mathematics, 110 LCB    Internet e-mail: beebe at math.utah.edu  -
- 155 S 1400 E RM 233                       beebe at acm.org  beebe at computer.org -
- Salt Lake City, UT 84112-0090, USA    URL: http://www.math.utah.edu/~beebe  -
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