From f6ec00e1c4be34051678b3ec575a939c1cbfffbf Mon Sep 17 00:00:00 2001
From: sfan5 <sfan5@live.de>
Date: Thu, 21 Jul 2022 19:49:36 +0200
Subject: [PATCH] Include revision in SOVERSION for (in)compatibility checks

---
 CMakeLists.txt                 |  4 +++-
 source/Irrlicht/CMakeLists.txt | 15 ++++++++++++++-
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2ecb9f7d..ac3cb936 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,8 +7,10 @@ else()
 	cmake_policy(VERSION 3.9)
 endif()
 
+set(IRRLICHTMT_REVISION 6)
+
 project(Irrlicht
-	VERSION 1.9.0
+	VERSION 1.9.0.${IRRLICHTMT_REVISION}
 	LANGUAGES CXX
 )
 
diff --git a/source/Irrlicht/CMakeLists.txt b/source/Irrlicht/CMakeLists.txt
index 9c10d8a5..57a43048 100644
--- a/source/Irrlicht/CMakeLists.txt
+++ b/source/Irrlicht/CMakeLists.txt
@@ -42,6 +42,20 @@ elseif(MSVC)
 	endif()
 endif()
 
+# Sanity-check version
+
+include(CheckCXXSourceCompiles)
+set(CMAKE_REQUIRED_INCLUDES ${PROJECT_SOURCE_DIR}/include)
+unset(REVISION_SANITY_CHECK CACHE)
+check_cxx_source_compiles("#include <IrrCompileConfig.h>\n\
+#if IRRLICHT_VERSION_MT_REVISION != ${IRRLICHTMT_REVISION}\n\
+#error\n\
+#endif\n\
+int main() {}" REVISION_SANITY_CHECK)
+if(NOT REVISION_SANITY_CHECK)
+	message(FATAL_ERROR "IrrlichtMt revision number mismatches between CMake and headers.")
+endif()
+
 # Required libs
 
 find_package(ZLIB REQUIRED)
@@ -298,7 +312,6 @@ endif()
 
 set_target_properties(IrrlichtMt PROPERTIES
 	VERSION ${PROJECT_VERSION}
-	SOVERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
 )
 
 if(WIN32)