build: new build option BUILD_X11 to control building of X11 backend

CMakeLists.txt

@@ -156,6 +156,12 @@ set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib")
 # Instead use Q_SIGNAL, Q_SLOT and Q_EMIT
 # prevents issues when used with glib for libportal
 add_definitions(-DQT_NO_KEYWORDS)
+
+#Options for Linux platform support
+if(UNIX AND NOT APPLE)
+  option(BUILD_X11_SUPPORT "Build with x11 support" ON)
+endif()
+
 include(cmake/Libraries.cmake)
 configure_libs()
 

cmake/Libraries.cmake

@@ -145,7 +145,9 @@ macro(configure_unix_libs)
     add_definitions(-DWINAPI_CARBON=1)
   else()
 
+    if (BUILD_X11_SUPPORT)
       configure_xorg_libs()
+    endif()
 
     include(FindPkgConfig)
     find_package(PkgConfig)

doc/dev/build.md

@@ -26,6 +26,7 @@ CMake options:
 | BUILD_DEV_DOCS           | Build development documentation         | OFF                | `Doxygen` |
 | BUILD_INSTALLER          | Build installers/packages               | ON                 | |
 | BUILD_TESTS              | Build unit tests and legacy tests       | ON                 | `gtest`|
+| BUILD_X11_SUPPORT        | Build X11 backend (linux and bsd only)  | ON                 | `x11 libs`|
 | ENABLE_COVERAGE          | Enable test coverage                    | OFF                | `gcov` |
 | SKIP_BUILD_TESTS         | Skip running of tests at build time     | OFF                | |
 | VCPKG_QT                 | Build Qt w/ vcpkg (windows only)        | OFF                | |

src/lib/deskflow/unix/AppUtilUnix.cpp

@@ -15,8 +15,6 @@
 #elif WINAPI_CARBON
 #include <Carbon/Carbon.h>
 #include <platform/OSXAutoTypes.h>
-#else
-#error Platform not supported.
 #endif
 
 #include <filesystem>

src/lib/platform/CMakeLists.txt

@@ -99,6 +99,9 @@ elseif(UNIX)
     XDGPowerManager.h
     XDGKeyUtil.h
     XDGKeyUtil.cpp
+  )
+  if (BUILD_X11_SUPPORT)
+    list(APPEND PLATFORM_SOURCES
       XWindowsClipboard.cpp
       XWindowsClipboard.h
       XWindowsClipboardAnyBitmapConverter.cpp
@@ -124,6 +127,7 @@ elseif(UNIX)
       XWindowsUtil.cpp
       XWindowsUtil.h
     )
+  endif()
 
   if(LIBEI_FOUND)
     list(APPEND PLATFORM_SOURCES

src/unittests/deskflow/CMakeLists.txt

@@ -45,9 +45,7 @@ create_test(
   WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/src/lib/deskflow"
 )
 
-
+if(BUILD_X11_SUPPORT)
-if(UNIX AND NOT APPLE)
-  #this test does not work properly on windows / mac os
   create_test(
     NAME X11LayoutParserTests
     DEPENDS app

src/unittests/platform/CMakeLists.txt

@@ -25,6 +25,7 @@ elseif(APPLE)
     WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/src/lib/platform"
   )
 elseif(UNIX)
+  if (BUILD_X11_SUPPORT)
     create_test(
       NAME XWindowsClipboardTests
       DEPENDS platform
@@ -33,3 +34,4 @@ elseif(UNIX)
       WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/src/lib/platform"
     )
   endif()
+endif()