CI: get version from git tags, add suffix for custom builds.

CMakeLists.txt

@@ -1,12 +1,14 @@
+include(${CMAKE_SOURCE_DIR}/cmake/Version.cmake)
+
 cmake_minimum_required(VERSION 3.5)
-project(
-  snapshot
-  VERSION 0.0.0
-  LANGUAGES CXX)
+project(snapshot LANGUAGES CXX)
+set_git_tag_as_project_version()
+set(PROJECT_VERSION ${PROJECT_VERSION_TAG})
 
 option(BUILD_TESTING "Build tests" OFF)
 option(INSTALL_GTEST OFF)
 
+message(STATUS "Project version: ${PROJECT_VERSION}")
 message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
 message(STATUS "Build tests: ${BUILD_TESTING}")
 

app/CMakeLists.txt

@@ -20,7 +20,7 @@ if(QT6_LIB_TYPE STREQUAL "STATIC_LIBRARY")
   install(PROGRAMS ${CMAKE_SOURCE_DIR}/scripts/snapshot DESTINATION .)
 
   set(CPACK_PACKAGE_NAME ${PROJECT_NAME})
-  set(CPACK_PACKAGE_VERSION ${PROJECT_VERSION})
+  set(CPACK_PACKAGE_VERSION ${PROJECT_VERSION_FULL})
   set(CPACK_GENERATOR "TGZ")
 
   include(CPack)

cmake/Version.cmake

@@ -0,0 +1,74 @@
+# cmake-format: off
+# Set the project version based on git tags
+# This function sets the following variables:
+#   - PROJECT_VERSION: The version tag from git, or '0.0.0' if not a git 
+#     repository or no version tag is found.
+#   - PROJECT_VERSION_SUFFIX: The version suffix which is the commit hash if not
+#     a tagged commit, and/or '-custom' if not a GitHub Actions build.
+#   - PROJECT_VERSION_FULL: The full version string
+# cmake-format: on
+function(set_git_tag_as_project_version)
+  find_package(Git QUIET)
+  if(GIT_FOUND AND EXISTS "${PROJECT_SOURCE_DIR}/.git")
+    # Detect if building in GitHub Actions
+    set(BUILD_ENV "local")
+    if(DEFINED ENV{GITHUB_ACTIONS})
+      set(BUILD_ENV "github")
+    endif()
+
+    # Attempt to get version from git describe
+    execute_process(
+      COMMAND ${GIT_EXECUTABLE} describe --tags --abbrev=0 --contains --match
+              "v*[0-9].*[0-9].*[0-9]"
+      WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
+      OUTPUT_VARIABLE project_version_tag
+      OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
+
+    # If git describe fails, use the latest version tag and append commit hash
+    if(NOT project_version_tag)
+      execute_process(
+        COMMAND ${GIT_EXECUTABLE} describe --tags --abbrev=0 --match
+                "v*[0-9].*[0-9].*[0-9]"
+        WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
+        OUTPUT_VARIABLE project_version_tag
+        OUTPUT_STRIP_TRAILING_WHITESPACE)
+      execute_process(
+        COMMAND ${GIT_EXECUTABLE} rev-parse --short HEAD
+        WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
+        OUTPUT_VARIABLE project_commit_hash
+        OUTPUT_STRIP_TRAILING_WHITESPACE)
+      set(project_commit_hash "+${project_commit_hash}")
+    endif()
+
+    # Append '-custom' if not a GitHub Actions build
+    if(BUILD_ENV STREQUAL "local")
+      set(project_version_suffix "${project_commit_hash}-custom")
+    endif()
+
+  else()
+    message(
+      WARNING
+        "Git not found or not a git repository. Using default version v0.0.0-no-version-info"
+    )
+    set(project_version_tag "0.0.0")
+    set(project_version_suffix "-no-version-info")
+  endif()
+
+  # Optionally, strip the 'v' prefix if present
+  string(REGEX REPLACE "^v" "" project_version_tag "${project_version_tag}")
+
+  # Make global variables
+  set(PROJECT_VERSION_TAG
+      "${project_version_tag}"
+      CACHE STRING "Project version")
+  set(PROJECT_VERSION_SUFFIX
+      "${project_version_suffix}"
+      CACHE STRING "Project version suffix")
+  set(PROJECT_VERSION_FULL
+      "${project_version_tag}${project_version_suffix}"
+      CACHE STRING "Project full version")
+
+  message(STATUS "Project version tag: ${PROJECT_VERSION_TAG}")
+  message(STATUS "Project version suffix: ${PROJECT_VERSION_SUFFIX}")
+  message(STATUS "Project full version: ${PROJECT_VERSION_FULL}")
+endfunction()

scripts/build-qt

@@ -88,7 +88,6 @@ build-qt-static() {
         -submodules qtbase,qtmultimedia,qtwayland \
         "$use_pch" \
         -no-gstreamer \
-        -no-alsa \
         -- \
         -S "$src" \
         -B "$src/build" \