Add support tools for version management

CMakeLists.txt

@@ -39,11 +39,19 @@ endif()
 # CMake/project requirements and configuration
 #
 cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
-project(Bayeux VERSION "3.1.0")
+project(Bayeux)
 
 # - Load Custom Modules
 list(INSERT CMAKE_MODULE_PATH 0 ${PROJECT_SOURCE_DIR}/cmake)
 
+# - Version number management utilities:
+include(BxVersionManager)
+
+# - Versioning only giving major and minor. Patch number is
+#   automatically deduced from an external file.
+bx_version_set(Bayeux 3 1)
+message(STATUS "[info] Project version = '${PROJECT_VERSION}'")
+
 #-----------------------------------------------------------------------
 # Common LPC utilities
 #

cmake/BxPackageVersions.db

@@ -0,0 +1,8 @@
+# List of released versions addressed by their MAJOR.MINOR version number
+# and update through a PATCH number:
+3.0.0
+3.1.0
+#3.2.0
+#3.3.0
+#4.0.0
+# end

cmake/BxVersionManager.cmake

@@ -0,0 +1,70 @@
+# CMake tools for version management
+# Author: F.Mauger
+# Date: 2017-09-26
+# Copyright 2017 (c) François Mauger, Université de Caen Normandie
+
+function(bx_version_build_version_number prefix_)
+  set(${prefix_}_VERSION
+    "${${prefix_}_VERSION_MAJOR}.${${prefix_}_VERSION_MINOR}.${${prefix_}_VERSION_PATCH}"
+    PARENT_SCOPE)
+endfunction()
+
+function(bx_version_extract_patch_from_db major_ minor_ patch_)
+  set(_version_patch 0)
+  if (EXISTS ${PROJECT_SOURCE_DIR}/cmake/BxPackageVersions.db)
+    file(STRINGS
+      ${PROJECT_SOURCE_DIR}/cmake/BxPackageVersions.db
+      _bx_package_versions_lines
+      REGEX "^([0-9]+)\\.([0-9]+)\\.([0-9+])"
+      )
+    foreach(line ${_bx_package_versions_lines})
+      string(REPLACE "." ";" _version_list ${line})
+      list(GET _version_list 0 _version_major)
+      list(GET _version_list 1 _version_minor)
+      list(GET _version_list 2 _version_patch)
+      if(${_version_major} EQUAL ${major_})
+	if(${_version_minor} EQUAL ${minor_})
+	  set(${patch_} ${_version_patch} PARENT_SCOPE)
+	endif()
+      endif()
+    endforeach()
+  else()
+    set(${patch_} ${_version_patch} PARENT_SCOPE)
+  endif()
+endfunction()
+
+macro(bx_version_set prefix_ major_ minor_)
+  set(_version_major ${major_})
+  set(_version_minor ${minor_})
+  set(_version_patch 0)
+  set(${prefix_}_VERSION_MAJOR ${_version_major})
+  set(${prefix_}_VERSION_MINOR ${_version_minor})
+  set(${prefix_}_VERSION_PATCH ${_version_patch})
+  bx_version_extract_patch_from_db(
+    ${${prefix_}_VERSION_MAJOR}
+    ${${prefix_}_VERSION_MINOR}
+    ${prefix_}_VERSION_PATCH
+    )
+  bx_version_build_version_number(${prefix_})
+  message(STATUS "[info] bx_version_set: Major   = ${${prefix_}_VERSION_MAJOR}")
+  message(STATUS "[info] bx_version_set: Minor   = ${${prefix_}_VERSION_MINOR}")
+  message(STATUS "[info] bx_version_set: Patch   = ${${prefix_}_VERSION_PATCH}")
+  message(STATUS "[info] bx_version_set: Version = ${${prefix_}_VERSION}")
+  if (NOT PROJECT_VERSION)
+    message(STATUS "[info] bx_version_set: Setting project version...")
+    set(PROJECT_VERSION "${${prefix_}_VERSION}")
+  endif()
+  if (NOT PROJECT_VERSION_MAJOR)
+    message(STATUS "[info] bx_version_set: Setting project version major...")
+    set(PROJECT_VERSION_MAJOR "${${prefix_}_VERSION_MAJOR}")
+  endif()
+  if (NOT PROJECT_VERSION_MINOR)
+    message(STATUS "[info] bx_version_set: Setting project version minor...")
+    set(PROJECT_VERSION_MINOR_VERSION "${${prefix_}_VERSION_MINOR}")
+  endif()
+  if (NOT PROJECT_VERSION_PATCH)
+    message(STATUS "[info] bx_version_set: Setting project version patch...")
+    set(PROJECT_VERSION_PATCH "${${prefix_}_VERSION_MINOR}")
+  endif()
+  message(STATUS "[info] bx_version_set: Project version = '${PROJECT_VERSION}'")
+endmacro()

source/CMakeLists.txt

@@ -392,6 +392,7 @@ include(CMakePackageConfigHelpers)
 # - Versioning file is the same for the build and install trees
 write_basic_package_version_file(
   ${BAYEUX_BUILD_CMAKEDIR}/${BAYEUX_TAG}/BayeuxConfigVersion.cmake
+  VERSION ${Bayeux_VERSION}
   COMPATIBILITY SameMajorVersion
   )