CMake: tweak version-handling

- separate out the version into a variable (again -- this was moved **into**
  project() long ago, but now there's a desire to have the value before
  reaching the project() command)
- rename CALAMARES_VERSION_RC to something more sensible.

CMakeLists.txt

@@ -40,13 +40,15 @@
 
 # TODO:3.3: Require CMake 3.12
 cmake_minimum_required( VERSION 3.3 FATAL_ERROR )
+
+set( CALAMARES_VERSION 3.2.40 )
+set( CALAMARES_RELEASE_MODE OFF )
+
 project( CALAMARES
-    VERSION 3.2.40
+    VERSION ${CALAMARES_VERSION}
     LANGUAGES C CXX
 )
 
-set( CALAMARES_VERSION_RC 1 )  # Set to 0 during release cycle, 1 during development
-
 ### OPTIONS
 #
 option( INSTALL_CONFIG "Install configuration files" OFF )
@@ -494,11 +496,7 @@ add_feature_info( ExampleDistro ${mksquashfs_FOUND} "Create example-distro targe
 
 ### CALAMARES PROPER
 #
-set( CALAMARES_VERSION ${CALAMARES_VERSION_MAJOR}.${CALAMARES_VERSION_MINOR}.${CALAMARES_VERSION_PATCH} )
-# In rare cases we have hotfix-releases with a tweak
-if( CALAMARES_VERSION_TWEAK )
-    set( CALAMARES_VERSION "${CALAMARES_VERSION}.${CALAMARES_VERSION_TWEAK}" )
-endif()
+#
 set( CALAMARES_VERSION_SHORT "${CALAMARES_VERSION}" )
 
 # Additional info for non-release builds. The "extended" version information
@@ -506,7 +504,7 @@ set( CALAMARES_VERSION_SHORT "${CALAMARES_VERSION}" )
 # by CalamaresVersionX.h, which is included by consumers that need a full
 # version number with all that information; normal consumers can include
 # CalamaresVersion.h with more stable numbers.
-if( NOT CALAMARES_VERSION_RC EQUAL 0 AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/.git/" )
+if( NOT CALAMARES_RELEASE_MODE AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/.git/" )
     include( CMakeDateStamp )
     set( CALAMARES_VERSION_DATE "${CMAKE_DATESTAMP_YEAR}${CMAKE_DATESTAMP_MONTH}${CMAKE_DATESTAMP_DAY}" )
     if( CALAMARES_VERSION_DATE GREATER 0 )
@@ -521,7 +519,7 @@ endif()
 
 # Special target for displaying the version. In RC (might-be-release)
 # builds, use the short version (3.x.y), otherwise show the long version.
-if ( CALAMARES_VERSION_RC EQUAL 0 )
+if ( CALAMARES_RELEASE_MODE )
     add_custom_target(show-version
         ${CMAKE_COMMAND} -E echo CALAMARES_VERSION=${CALAMARES_VERSION_SHORT}
         USES_TERMINAL

ci/RELEASE.md

@@ -27,7 +27,8 @@
 
 ## (1) Preparation
 
-* Drop the RC variable to 0 in `CMakeLists.txt`, *CALAMARES_VERSION_RC*.
+* Double-check the *CALAMARES_VERSION* value at the top of `CMakeLists.txt`.
+* Set *CALAMARES_RELEASE_MODE* to `ON` in `CMakeLists.txt`.
 * Edit `CHANGES` and set the date of the release.
 * Commit both. This is usually done with commit-message
   *Changes: pre-release housekeeping*.
@@ -78,8 +79,8 @@ Follow the instructions printed by the release script.
 
 ## (4) Post-Release
 
-* Bump the version number in `CMakeLists.txt` in the `project()` command.
-* Set *CALAMARES_VERSION_RC* back to 1.
+* Bump the version number in `CMakeLists.txt` in *CALAMARES_VERSION*.
+* Set *CALAMARES_RELEASE_MODE* back to `OFF`.
 * Add a placeholder entry for the next release in `CHANGES` with date
   text *not released yet*.
 * Commit and push that, usually with the message