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zlib 1.0.8

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Mark Adler
2011-09-09 23:18:57 -07:00
parent 7850e4e406
commit 6759211ad8
27 changed files with 482 additions and 144 deletions
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45
README
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@@ -1,15 +1,16 @@
zlib 1.0.7 is a general purpose data compression library. All the code
is reentrant (thread safe). The data format used by the zlib library
zlib 1.0.8 is a general purpose data compression library. All the code
is thread safe. The data format used by the zlib library
is described by RFCs (Request for Comments) 1950 to 1952 in the files
ftp://ds.internic.net/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate
format) and rfc1952.txt (gzip format). These documents are also available in
other formats from ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html
All functions of the compression library are documented in the file
zlib.h. A usage example of the library is given in the file example.c
which also tests that the library is working correctly. Another
example is given in the file minigzip.c. The compression library itself
is composed of all source files except example.c and minigzip.c.
All functions of the compression library are documented in the file zlib.h
(volunteer to write man pages welcome, contact jloup@gzip.org). A usage
example of the library is given in the file example.c which also tests that
the library is working correctly. Another example is given in the file
minigzip.c. The compression library itself is composed of all source files
except example.c and minigzip.c.
To compile all files and run the test program, follow the instructions
given at the top of Makefile. In short "make test; make install"
@@ -24,18 +25,18 @@ Mark Nelson wrote an article about zlib for the Jan. 1997 issue of
Dr. Dobb's Journal; a copy of the article is available in
http://web2.airmail.net/markn/articles/zlibtool/zlibtool.htm
The changes made in version 1.0.7 are documented in the file ChangeLog.
The main changes since 1.0.6 are:
The changes made in version 1.0.8 are documented in the file ChangeLog.
The main changes since 1.0.7 are:
- fix gzseek which was broken in write mode
- return error for gzseek to negative absolute position
- fix configure for Linux (Chun-Chung Chen)
- increase stack space for MSC (Tim Wegner)
- get_crc_table and inflateSyncPoint are EXPORTed (Gilles Vollant)
- define EXPORTVA for gzprintf (Gilles Vollant)
- added mini man page zlib.3 (Rick Rodgers) [volunteers to write full
man pages from zlib.h most welcome. write to jloup@gzip.org]
- for contrib/untgz, fix makedir() and improve Makefile
- fixed offsets in contrib/asm386/gvmat32.asm (Gilles Vollant)
- fix gzgetc and gzputc for big endian systems (Markus Oberhumer)
- added compress2() to allow setting the compression level
- include sys/types.h to get off_t on some systems (Marc Lehmann & QingLong)
- use constant arrays for the static trees in trees.c instead of computing
them at run time (thanks to Ken Raeburn for this suggestion). To create
trees.h, compile with GEN_TREES_H and run "make test".
- check return code of example in "make test" and display result
- pass minigzip command line options to file_compress
Unsupported third party contributions are provided in directory "contrib".
@@ -64,6 +65,9 @@ Notes for some targets:
See contrib/visual-basic.txt for more information.
I don't know how to handle structures in Visual Basic, sorry.
- "make test" fails on Solaris 2.6 with gcc 2.8.0. It works with cc and
with gcc 2.7.2.1.
- For 64-bit Irix, deflate.c must be compiled without any optimization.
With -O, one libpng test fails. The test works in 32 bit mode (with
the -n32 compiler flag). The compiler bug has been reported to SGI.
@@ -74,7 +78,10 @@ Notes for some targets:
- zlib doesn't work on HP-UX 9.05 with one cc compiler (the one not
accepting the -O option). It works with the other cc compiler.
- gzdopen is not supported on RISCOS
- For shared memory multiprocessors, the decompression code assumes that
writes to pointers are atomic.
- gzdopen is not supported on RISCOS, BEOS and Mac
- For Turbo C the small model is supported only with reduced performance to
avoid any far allocation; it was tested with -DMAX_WBITS=11 -DMAX_MEM_LEVEL=3