[pim/libkleo/gpg4win/gpd-5.2] /: Use different SOVERSION for each minor release

Git commit 8c8410a2b0c73a9b48039904619d1ee4c96c0611 by Ingo Klöcker, on behalf of Ingo Klöcker.
Committed on 30/07/2026 at 09:35.
Pushed by kloecker into branch 'gpg4win/gpd-5.2'.

Use different SOVERSION for each minor release

We don't guarantee ABI stability between minor releases. Hence we should
bump the SOVERSION with each minor release.

(cherry picked from commit a372ef5f7bc1474c7586e0d4bb90de5d100c3ff5)

M  +9    -1    CMakeLists.txt

https://invent.kde.org/pim/libkleo/-/commit/8c8410a2b0c73a9b48039904619d1ee4c96c0611

diff --git a/CMakeLists.txt b/CMakeLists.txt
index be646551..9a664f90 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,6 +4,14 @@ cmake_minimum_required(VERSION 3.29)
 set(PIM_VERSION "6.7.46")
 
 project(libkleo VERSION ${PIM_VERSION})
+# use a different SOVERSION for each minor release because we don't guarantee any ABI stability;
+# bump the SOVERSION with the first development version, i.e. major.minor.40
+if(libkleo_VERSION_PATCH VERSION_GREATER_EQUAL "40")
+    math(EXPR minorPlus1 "${libkleo_VERSION_MINOR} + 1")
+    set(soversion ${libkleo_VERSION_MAJOR}.${minorPlus1})
+else()
+    set(soversion ${libkleo_VERSION_MAJOR}.${libkleo_VERSION_MINOR})
+endif()
 
 set(KF_MIN_VERSION "6.22.0")
 
@@ -71,7 +79,7 @@ set_package_properties(Boost PROPERTIES DESCRIPTION "Boost C++ Libraries" URL "h
 ecm_setup_version(PROJECT VARIABLE_PREFIX LIBKLEO
                         VERSION_HEADER "${CMAKE_CURRENT_BINARY_DIR}/libkleo_version.h"
                         PACKAGE_VERSION_FILE "${CMAKE_CURRENT_BINARY_DIR}/KPim6LibkleoConfigVersion.cmake"
-                        SOVERSION 6
+                        SOVERSION ${soversion}
 )
 
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