Prepare prerelease publishing and Debian version ordering

Author: cboulay

.github/workflows/cppcmake.yml

@@ -13,7 +13,7 @@ on:
       - '.github/workflows/cppcmake.yml'
   pull_request:
   release:
-    types: ['created']
+    types: ['published']
   workflow_dispatch:
     inputs:
       cmakeextra:

CMakeLists.txt

@@ -50,6 +50,11 @@ elseif(WIN32)
     set(CPACK_GENERATOR ZIP)
 else()
     set(CPACK_GENERATOR DEB TGZ)
+    # Debian prereleases must sort before the corresponding stable version.
+    # Keep the Git tag and other package metadata unchanged (e.g. 1.18.0.b3).
+    string(REGEX REPLACE
+        "^([0-9]+\\.[0-9]+\\.[0-9]+)[.-]?((alpha|beta|rc|a|b)[0-9]+)$"
+        "\\1~\\2" CPACK_DEBIAN_PACKAGE_VERSION "${LSL_VERSION_FULL}")
     set(CPACK_DEBIAN_PACKAGE_MAINTAINER "LabStreamingLayer Developers")
     set(CPACK_DEBIAN_PACKAGE_SECTION "science")
     if(LSL_ARCH STREQUAL "amd64" OR LSL_ARCH STREQUAL "arm64" OR LSL_ARCH STREQUAL "i386")