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 Readme for:  Development » Library » Misc » sqlite.lha


Description: SQL database engine
Download: sqlite.lha       (TIPS: Use the right click menu if your browser takes you back here all the time)
Size: 12Mb
Version: 3.7.5
Date: 30 Sep 2016
Author: D. Richard Hipp, Steffen Gutmann, Alexandre Balaban, Ilkka Lehtoranta, Mathias Parnaudeau
Submitter: Michael Trebilcock
Homepage: http://www.sqlite.org
Category: development/library/misc
Replaces: development/library/misc/sqlite.lha
License: Other
Distribute: yes
Min OS Version: 4.1
FileID: 10008
Comments: 6
Snapshots: 0
Videos: 0
Downloads: 204  (Current version)
851  (Accumulated)
Votes: 0 (0/0)  (30 days/7 days)

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My port of the libsqlite3-3.7.5 source used for Timberwolf, sent to me by Thomas
Frieden in 2011. Source included.

The older 3.6.1 library and source is also included in case of any issues. The
3.6.1 archive is completely untouched and is the version previously on OS4Depot.
Please note that the pre-compiled libsqlite3.a library in 3.6.1 was built using

The following readme below written by Steffen Gutmann is for the 3.6.1 port. I
don't have any information on any possible OS4 specific changes in 3.7.5.


SQLite is a Self-contained, embeddable, zero-configuration SQL database
engine. For information about SQLite, see the main README or check the
site here: http://www.sqlite.org

This is the Amiga version of sqlite-3.6.1 and can be considered stable.
The regression tests either succeed without failure or reported errors can 
be explained or document limitations of this version.  See below for a list
of limitations in the Amiga version.

There have been several attempts to port SQLite to AmigaOS.  Please browse
Aminet for a list.  Several of the previous ports made use of the Posix/
ixemul interface that provides a Unix-like emulation of what is needed by
the SQLite low level file access.

This port is different in that it only uses AmigaOS 3 native functions
for implementing the OS interface.  The changes to the original version
3.5.4 are in writing a custom Makefile for Amiga, implementing the OS module 
for AmigaOS, adding some work-arounds for char to 64bit integer conversion
bugs in the gcc-3.4.0 compiler, and making some other minor changes in 
several flies.  A complete diff of all changes can be found in the file 

Note that this version fully supports 64bit integers.  This, however, 
requires a compiler that supports 64bit integers and rules out, e.g. SAS-C.

The os_amiga.c file contains an implementation of all necessary OS functions.
This module was written by taking os_unix.c as a start, looking at os_win.c 
sometimes to get an idea on how else things can be done, by careful reading 
the autodocs of AmigaDOS, by testing some of the more advanced functions in 
AmigaDOS 3.0+ (e.g. LockRecord which seems to be unimplemented on most 
filesystems), and by running the regression tests and tweaking the code
to ensure a correct implementation.  If you are interested, you can find 
many comments in os_amiga.c, in particular about how to do the file locking.

The library and the sqlite3 shell have been compiled for m68k-AmigaOS
using gcc-3.4.0.  The compiled binaries can be found in build-m68k-amigaos.
The binaries also contain the 'testfixture' program for running 
the regression test suite.  As 'testfixture' needs a tcl interpreter, 
I ported tcl-8.4.14 to AmigaOS using the ixemul library interface and 
also compiled 'testfixture' against it.  Note that the sqlite3 shell and 
libraries are compiled with the -noixemul switch and are thus are true 
'Amiga-like' binaries.

Mathias Parnaudeau provides the AmigaOS 4 binaries under directory
build-ppc-amigaos and Ilkka Lehtoranta the MorphOS binaries under directory

The regression tests reported below have been run for the AmigaOS 3 version
(under UAE).  Test results for MorphOS are also available and are similar 
to the results on Amiga OS3 but haven't been fully analyzed yet.


- No support for large files (LFS).  To the best of my knowledge files
  under AmigaOS can be at most (2**31 - 1) bytes.  This limitation arises
  from the LONG parameters in dos.library.
  Compile switch -DSQLITE_DISABLE_LFS
  (AOS4 and MorphOS introduce support for large files and implementation is
  in progress).
- No byte-range-locking.  I tried several file systems (OFS, FFS) but they
  do not seem to support the LockRecord/UnLockRecord calls (The RAM: disk
  does support it and maybe SFS also has it implemented).  Therefore, the
  default way of locking is by using (several) .lock files.  Read os_amiga.c
  if you want to know more about this.

- Truncate file by replace.  The dos.library/SetFileSize call is unsupported
  by most file systems (OFS, FFS) and therefore truncating a file to a
  target size doesn't work.  My workaround to this is to write a new file
  of the target size and replace the files.  This does not always work
  though if the file is still opened by another process/handle.  In this
  case truncating fails which means that the 'VACUUM' command of sqlite
  fails.  Use a file system that supports SetFileSize (try SFS) if you need
  to rely on a proper functioning of the VACUUM command.

- 71 errors in 58122 tests remain. (see build-m68k-amigaos/test-stripped.log).
  The errors can be categorized into the following classes which explain 
  what is happening:

    * rounding error on double  : lack of precision in the math implementation
                                  of double precision floating point numbers.
      Test cases: date-*, expr-13.*, main-3.2.*, misc3-2.4, misc3-6.11,
                nan-*, printf-2.3.10.*, printf-10.3, printf-11.7, table-13.2.*

    * representation of double  : NaN/Inf is differenlty represented 
                                  or handled in the math libs.
      Test cases: expr-2.26[b], nan-*, printf-7.*

    * stat on exlusive open file: trying to open/access a file where a process
                                  holds an exclusive lock on.
      Test cases: exclusive-3.*, io-4.*, misc1-14.2,
    * ixemul vs AmigaDOS path   : /home/a/b/c vs. home:a/b/c
      Test cases: pragma-9.*, shared-1.11.9, shared-2.11.9

    * delete on open file error : the replace-file-when-truncating operation
                                  failed because some process still holds
                                  a handle on the file.
      Test cases: shared-2.3.1.*, vacuum-2.2, vacuum2-3.13

    * Others: minor errors, need more investigation
      Test cases: tkt2854-1.5, tkt2854-1.16.

  You can reproduce these results by running 'testfixture ../test/quick.test'.
  Prior to running this test, make sure the stack is at least 500kBytes large
  as the tcl interpreter uses a lot of stack in recursive calls.

Steffen Gutmann, 20.10.2008

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