From 81a6d1b0d4d93a3330cc99fbb1601c90b9516a9c Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.a.alekhin@gmail.com>
Date: Thu, 2 Dec 2021 13:32:59 +0000
Subject: [PATCH] cmake: update SOVERSION

- OpenCV 4.x doesn't guarantee or maintain ABI compatibility
- We should increase SO version on each release
---
 cmake/OpenCVVersion.cmake | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/cmake/OpenCVVersion.cmake b/cmake/OpenCVVersion.cmake
index a2b4926cf0..6ffaab94cf 100644
--- a/cmake/OpenCVVersion.cmake
+++ b/cmake/OpenCVVersion.cmake
@@ -10,8 +10,10 @@ set(OPENCV_VERSION_PLAIN "${OPENCV_VERSION_MAJOR}.${OPENCV_VERSION_MINOR}.${OPEN
 
 set(OPENCV_VERSION "${OPENCV_VERSION_PLAIN}${OPENCV_VERSION_STATUS}")
 
-set(OPENCV_SOVERSION "${OPENCV_VERSION_MAJOR}.${OPENCV_VERSION_MINOR}")
-set(OPENCV_LIBVERSION "${OPENCV_VERSION_MAJOR}.${OPENCV_VERSION_MINOR}.${OPENCV_VERSION_PATCH}")
+string(REGEX MATCH "[0-9][0-9]$" OPENCV_VERSION_MINOR_2DIGITS "00${OPENCV_VERSION_MINOR}")
+string(REGEX MATCH "[0-9][0-9]$" OPENCV_VERSION_PATCH_2DIGITS "00${OPENCV_VERSION_PATCH}")
+ocv_update(OPENCV_SOVERSION "${OPENCV_VERSION_MAJOR}${OPENCV_VERSION_MINOR_2DIGITS}")
+ocv_update(OPENCV_LIBVERSION "${OPENCV_VERSION_MAJOR}.${OPENCV_VERSION_MINOR}.${OPENCV_VERSION_PATCH}")
 
 # create a dependency on the version file
 # we never use the output of the following command but cmake will rerun automatically if the version file changes