From a0487b1cb5beffb8f6783476664b01e8833e0ea8 Mon Sep 17 00:00:00 2001
From: Karel Zak
Date: Tue, 10 Feb 2009 17:20:11 +0100
Subject: blkid: start to use ABI versioning

The library ABI and API is backwardly compatible, so it does not
make sense to change the library SONAME. This patch adds a symbol
versioning, naming paradigm is:

	BLKID_<maj>.<min>

The original libblkid from e2fsprogs uses "1.0" as a .so version and
"libblkid.1" as a SONAME for all time (at least according to stuff in
/lib/libblkid*)

And the original library is without symbols versioning. It means that
many private functions are exported to applications ;-(

Note that the original blkid_get_library_version() returns
E2FSPROGS_VERSION. The version in util-linux-ng returns BLKID_VERSION
which is <maj>.<min>.<rel>. The <maj>.<min> is the same version as we
use for ABI. This concept seems less confusing than mix a library
version and package version.

Summary:

OLD (e2fsprogs):
  ABI versioning:              -none-
  SONAME:                      libblkid.1
  .so version:                 libblkid.so.1.0
  blkid_get_library_version(): @E2FSPROGS_VERSION@ (e.g. 1.41.1)

NEW (util-linux-ng):
  ABI versioning:              BLKID_<maj>.<min>
  SONAME:                      libblkid.1
  .so version:                 libblkid.so.<maj.<min> (e.g. 1.41)
  blkid_get_library_version(): @BLKID_VERSION@ (e.g. 1.41.1)

  (BLKID_VERSION = <maj>.<min>.<rel>)

Signed-off-by: Karel Zak <kzak@redhat.com>
---
 configure.ac | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 2af03d9db..dc8374de0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,12 +10,13 @@ AC_CONFIG_SRCDIR(mount/mount.c)
 
 AC_PREFIX_DEFAULT([/usr])
 
-dnl libblkid version definition
-dnl -----------------------------
+dnl blkid version definition (the library SONAME is
+dnl "libblkid.so.$BLKID_VERSION_MAJOR", see blkid/Makefile.am)
+dnl ----------------------------------------------------------
 BLKID_VERSION_MAJOR=1
-BLKID_VERSION_MINOR=41
+BLKID_VERSION_MINOR=42
 BLKID_VERSION_RELEASE=0
-BLKID_DATE="10-Jul-2008"
+BLKID_DATE="10-Feb-2009"
 
 BLKID_VERSION=$BLKID_VERSION_MAJOR.$BLKID_VERSION_MINOR.$BLKID_VERSION_RELEASE
 
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