Move windeployqt support to CMake system

Squashed commit of the following:

commit b2551f7
Author: Paul Colby <git@colby.id.au>
Date:   Fri Oct 11 13:22:04 2024 +1100

    Correct target expression

commit 1036464
Author: Paul Colby <git@colby.id.au>
Date:   Fri Oct 11 13:11:18 2024 +1100

    Correct cli target name

commit a41f809
Merge: aefa00c f67450b
Author: Paul Colby <git@colby.id.au>
Date:   Fri Oct 11 13:02:48 2024 +1100

    Merge branch 'main' into windeployqt

commit aefa00c
Author: Paul Colby <git@colby.id.au>
Date:   Fri Oct 11 12:54:06 2024 +1100

    Promote the execution of windeployqt to CMake build files

.github/workflows/build.yaml

@@ -552,14 +552,7 @@ jobs:
           if-no-files-found: error
       - name: Make portable
         if: matrix.arch != 'arm64'
-        run: |
-          mkdir portable
-          copy /v /b src\lib\${{ matrix.dll }} /b portable
-          copy /v /b src\cli\dokit.exe /b portable
-          cd portable
-          windeployqt --compiler-runtime --release --verbose 2 dokit.exe ${{ matrix.dll }}
-          :: dokit.exe --version # This would hang the job, because Qt will show a message box.
-        working-directory: ${{ runner.temp }}
+        run: cmake --build "%RUNNER_TEMP%" --target cli-portable
       - name: Check portable version
         if: matrix.arch != 'arm64'
         shell: bash

src/CMakeLists.txt

@@ -10,5 +10,3 @@ if (ENABLE_GUI)
   message(STATUS "Enabling experimental GUI app")
   add_subdirectory(gui)
 endif()
-
-# \todo Add windeployqt target (w/ both CLI and GUI).

src/cli/CMakeLists.txt

@@ -86,7 +86,8 @@ find_program(LINUXDEPLOY NAMES linuxdeploy linuxdeploy-x86_64.AppImage)
 if (LINUXDEPLOY)
   message(STATUS "Found linuxdeploy: ${LINUXDEPLOY}")
   configure_file(desktop.in dokit.desktop)
-  add_custom_target(cli-appimage
+  add_custom_target(
+    cli-appimage
     COMMAND ${CMAKE_COMMAND} -E env
       OUTPUT=${CMAKE_BINARY_DIR}/dokit-${PROJECT_VERSION}${PROJECT_VERSION_SUFFIX}.AppImage
       QMAKE=$<TARGET_FILE:Qt${QT_VERSION_MAJOR}::qmake>
@@ -98,6 +99,25 @@ if (LINUXDEPLOY)
       --icon-file "${CMAKE_CURRENT_SOURCE_DIR}/dokit.png"
       --output appimage
       --plugin qt
-    DEPENDS dokit QtPokit
+    COMMENT "Bundling AppImage"
+    DEPENDS cli QtPokit
+    VERBATIM
     WORKING_DIRECTORY ${CMAKE_SOURCE_DIR})
 endif()
+
+find_program(WINDEPLOYQT NAMES windeployqt windeployqt.exe)
+if (WINDEPLOYQT)
+  message(STATUS "Found windeployqt: ${WINDEPLOYQT}")
+  file(MAKE_DIRECTORY ${PROJECT_BINARY_DIR}/portable)
+  add_custom_target(
+    cli-portable
+    COMMAND ${CMAKE_COMMAND} -E copy "$<TARGET_FILE:cli>" "${PROJECT_BINARY_DIR}/portable"
+    COMMAND ${CMAKE_COMMAND} -E copy "$<TARGET_FILE:QtPokit>" "${PROJECT_BINARY_DIR}/portable"
+    COMMAND ${WINDEPLOYQT} --compiler-runtime --release --verbose 2
+      "$<TARGET_FILE_NAME:cli>"
+      "$<TARGET_FILE_NAME:QtPokit>"
+    COMMENT "Bundling portable version"
+    DEPENDS cli QtPokit
+    VERBATIM
+    WORKING_DIRECTORY ${PROJECT_BINARY_DIR}/portable)
+endif()