From a29aeb821e3e227a3e9ccba481294ac4a3b39609 Mon Sep 17 00:00:00 2001
From: Peter M. Groen <peter.groen@priva.com>
Date: Thu, 21 Apr 2022 11:43:50 +0200
Subject: [PATCH] Add version information to projectheader

---
 projectheader.cmake | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+), 0 deletions(-)

diff --git a/projectheader.cmake b/projectheader.cmake
index 83df340..750268c 100644
--- a/projectheader.cmake
+++ b/projectheader.cmake
@@ -3,12 +3,37 @@
 # @param CURRENT_PROJECT_BINARY_DIR [optional] Override for the default project binary dir (PROJECT_BINARY_DIR for executables, CMAKE_BINARY_DIR for libraries).
 macro ( project_header CURRENT_PROJECT_NAME )
 
+# Determine the version and fill the following variables :
+# SOVERSION : The tag from the git-repository. Not necessarily a number-only string.
+find_package(Git QUIET)
+
+if(GIT_FOUND)
+    if( EXISTS "${PROJECT_SOURCE_DIR}/.git")
+        execute_process(COMMAND ${GIT_EXECUTABLE} describe --abbrev=0 --tags
+            WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+            OUTPUT_VARIABLE CURRENT_PROJECT_VERSION
+            OUTPUT_STRIP_TRAILING_WHITESPACE)
+        message( STATUS "================================================================" )
+        message( STATUS "Found the following tag : ${CURRENT_PROJECT_VERSION}")
+        message( STATUS "================================================================" )
+    else()
+        message( STATUS ".git directory does not exists..")
+        message( STATUS "Project directory : ${PROJECT_SOURCE_DIR}")
+    endif()
+else()
+    message( STATUS "git-command not found....")
+    message( FATAL "Unable to determine the version of the software.")
+endif()
+
 message( STATUS "" )
 message( STATUS "================================================================" )
 message( STATUS "Creating Makefile of ${CURRENT_PROJECT_NAME}" )
 message( STATUS "================================================================" )
 message( STATUS "CURRENT_PROJECT_VERSION: ${CURRENT_PROJECT_VERSION}" )
 
+set(SOVERSION "${CURRENT_PROJECT_VERSION}")
+set(VERSION "${CURRENT_PROJECT_VERSION}")
+
 project(${CURRENT_PROJECT_NAME} VERSION ${CURRENT_PROJECT_VERSION})
 set_property(GLOBAL PROPERTY GLOBAL_DEPENDS_NO_CYCLES 1)
 
--
libgit2 0.21.4