Docs: notes on DBM library changeovers

[exim.git] / doc / doc-txt / dbm.discuss.txt

diff --git a/doc/doc-txt/dbm.discuss.txt b/doc/doc-txt/dbm.discuss.txt
index 7df044e8247c863251cf483452676d719f73ce37..4f3622d690b694261ea574f1d2278fb7a8fd38cf 100644 (file)
--- a/doc/doc-txt/dbm.discuss.txt
+++ b/doc/doc-txt/dbm.discuss.txt
@@ -41,7 +41,8 @@ some time, and various releases 2.x began to appear towards the end of 1997. In
 November 1999, version 3.0 was released, and the ending of support for 2.7.7,
 the last 2.x release, was announced for November 2000. (Support for 1.85 has
 already ceased.) There were further 3.x releases, but by the end of 2001, the
 November 1999, version 3.0 was released, and the ending of support for 2.7.7,
 the last 2.x release, was announced for November 2000. (Support for 1.85 has
 already ceased.) There were further 3.x releases, but by the end of 2001, the

-current release was 4.0.14.
+current release was 4.0.14.  In 2022 it was 5.3.28 on Linux (the then-owner
+has developed it further but Exim does not support anything after 5.x).

 
 There are major differences in implementation and interface between the DB 1.x
 and 2.x/3.x/4.x releases, and they are best considered as two independent dbm
 
 There are major differences in implementation and interface between the DB 1.x
 and 2.x/3.x/4.x releases, and they are best considered as two independent dbm


@@ -152,6 +153,7 @@ Berkeley DB 1.8x
 1.85 was the most widespread DB 1.x release; there is also a 1.86 bug-fix
 release, but the belief is that the bugs it fixes will not affect Exim.
 However, maintenance for 1.x releases has been phased out.
 1.85 was the most widespread DB 1.x release; there is also a 1.86 bug-fix
 release, but the belief is that the bugs it fixes will not affect Exim.
 However, maintenance for 1.x releases has been phased out.

+Exim no loger supports these releases for current builds.

 
 This dbm library can be called by Exim in one of two ways: via the ndbm
 compatibility interface, or via its own native interface. There are two
 
 This dbm library can be called by Exim in one of two ways: via the ndbm
 compatibility interface, or via its own native interface. There are two


@@ -205,6 +207,8 @@ the file name handed to it.
 DB 2.x does not do any automatic locking of its own; it does have a set of
 functions for various forms of locking, but Exim does not use them.
 
 DB 2.x does not do any automatic locking of its own; it does have a set of
 functions for various forms of locking, but Exim does not use them.
 

+Exim no longer supports these releases for current builds.
+

 
 Berkeley DB 3.x
 ---------------
 
 Berkeley DB 3.x
 ---------------


@@ -226,6 +230,20 @@ Berkeley DB 4.x
 The 4.x series is a development of the 2.x and 3.x series, and the above
 comments apply.
 
 The 4.x series is a development of the 2.x and 3.x series, and the above
 comments apply.
 

+Berkeley DB 5.x
+---------------
+
+The 5.x versions seem to be current in several Linux disributions
+as of writing (2024). Exim uses them under the assumption that the
+API is the same as the version 4.1 library.
+
+Berkeley DB 6+
+---------------
+
+These versions exist, but documentation does not seem to be available.
+Exim does not support them.
+
+

 
 tdb
 ---
 
 tdb
 ---


@@ -318,3 +336,5 @@ exists, just in case. Proceed as follows:
 
 Philip Hazel
 Last update: June 2002
 
 Philip Hazel
 Last update: June 2002

+
+(+undates July 2024, jgh)