ZLIB version 1.2.8 for AS400 installation instructions

I) From an AS400 *SAVF file:

1) Unpacking archive to an AS400 save file

On the AS400:

_ Create the ZLIB AS400 library:

CRTLIB LIB(ZLIB) TYPE(*PROD) TEXT('ZLIB compression API library')

_ Create a work save file, for example:

CRTSAVF FILE(ZLIB/ZLIBSAVF)

On a PC connected to the target AS400:

_ Unpack the save file image to a PC file "ZLIBSAVF"

_ Upload this file into the save file on the AS400, for example

using ftp in BINARY mode.

2) Populating the ZLIB AS400 source library

On the AS400:

_ Extract the saved objects into the ZLIB AS400 library using:

RSTOBJ OBJ(*ALL) SAVLIB(ZLIB) DEV(*SAVF) SAVF(ZLIB/ZLIBSAVF) RSTLIB(ZLIB)

3) Customize installation:

_ Edit CL member ZLIB/TOOLS(COMPILE) and change parameters if needed,

according to the comments.

_ Compile this member with:

CRTCLPGM PGM(ZLIB/COMPILE) SRCFILE(ZLIB/TOOLS) SRCMBR(COMPILE)

4) Compile and generate the service program:

_ This can now be done by executing:

CALL PGM(ZLIB/COMPILE)

II) From the original source distribution:

1) On the AS400, create the source library:

CRTLIB LIB(ZLIB) TYPE(*PROD) TEXT('ZLIB compression API library')

2) Create the source files:

CRTSRCPF FILE(ZLIB/SOURCES) RCDLEN(112) TEXT('ZLIB library modules')

CRTSRCPF FILE(ZLIB/H) RCDLEN(112) TEXT('ZLIB library includes')

CRTSRCPF FILE(ZLIB/TOOLS) RCDLEN(112) TEXT('ZLIB library control utilities')

3) From the machine hosting the distribution files, upload them (with

FTP in text mode, for example) according to the following table:

Original AS400 AS400 AS400 AS400

file file member type description

SOURCES Original ZLIB C subprogram sources

adler32.c ADLER32 C ZLIB - Compute the Adler-32 checksum of a dta strm

compress.c COMPRESS C ZLIB - Compress a memory buffer

crc32.c CRC32 C ZLIB - Compute the CRC-32 of a data stream

deflate.c DEFLATE C ZLIB - Compress data using the deflation algorithm

gzclose.c GZCLOSE C ZLIB - Close .gz files

gzlib.c GZLIB C ZLIB - Miscellaneous .gz files IO support

gzread.c GZREAD C ZLIB - Read .gz files

gzwrite.c GZWRITE C ZLIB - Write .gz files

infback.c INFBACK C ZLIB - Inflate using a callback interface

inffast.c INFFAST C ZLIB - Fast proc. literals & length/distance pairs

inflate.c INFLATE C ZLIB - Interface to inflate modules

inftrees.c INFTREES C ZLIB - Generate Huffman trees for efficient decode

trees.c TREES C ZLIB - Output deflated data using Huffman coding

uncompr.c UNCOMPR C ZLIB - Decompress a memory buffer

zutil.c ZUTIL C ZLIB - Target dependent utility functions

H Original ZLIB C and ILE/RPG include files

crc32.h CRC32 C ZLIB - CRC32 tables

deflate.h DEFLATE C ZLIB - Internal compression state

gzguts.h GZGUTS C ZLIB - Definitions for the gzclose module

inffast.h INFFAST C ZLIB - Header to use inffast.c

inffixed.h INFFIXED C ZLIB - Table for decoding fixed codes

inflate.h INFLATE C ZLIB - Internal inflate state definitions

inftrees.h INFTREES C ZLIB - Header to use inftrees.c

trees.h TREES C ZLIB - Created automatically with -DGEN_TREES_H

zconf.h ZCONF C ZLIB - Compression library configuration

zlib.h ZLIB C ZLIB - Compression library C user interface

as400/zlib.inc ZLIB.INC RPGLE ZLIB - Compression library ILE RPG user interface

zutil.h ZUTIL C ZLIB - Internal interface and configuration

TOOLS Building source software & AS/400 README

as400/bndsrc BNDSRC Entry point exportation list

as400/compile.clp COMPILE CLP Compile sources & generate service program

as400/readme.txt README TXT Installation instructions

4) Continue as in I)3).

Notes: For AS400 ILE RPG programmers, a /copy member defining the ZLIB

API prototypes for ILE RPG can be found in ZLIB/H(ZLIB.INC).

Please read comments in this member for more information.

Remember that most foreign textual data are ASCII coded: this

implementation does not handle conversion from/to ASCII, so

text data code conversions must be done explicitely.

Mainly for the reason above, always open zipped files in binary mode.