cmake: Fix frontend feature flag mismatch

The actual frontend provided an "ENABLE_FRONTEND" build flag, whereas
the global project still provided an "ENABLE_UI" flag, which itself was
only read and respected by the scripting module.

This change retains the global flag and makes both the actual frontend
as well as the scripting module respect its value.

CMakeLists.txt

@@ -15,7 +15,7 @@ include(compilerconfig)
 include(defaults)
 include(helpers)
 
-option(ENABLE_UI "Enable building with UI (requires Qt)" ON)
+option(ENABLE_FRONTEND "Enable building with UI (requires Qt)" ON)
 option(ENABLE_SCRIPTING "Enable scripting support" ON)
 option(ENABLE_HEVC "Enable HEVC encoders" ON)
 

frontend/CMakeLists.txt

@@ -2,8 +2,6 @@ cmake_minimum_required(VERSION 3.28...3.30)
 
 add_subdirectory(api)
 
-option(ENABLE_FRONTEND "Enable building with UI frontend (requires Qt6)" ON)
-
 if(NOT ENABLE_FRONTEND)
   target_disable_feature(obs "User Interface")
   return()

shared/obs-scripting/CMakeLists.txt

@@ -30,7 +30,7 @@ target_sources(
 
 target_compile_definitions(
   obs-scripting
-  PRIVATE SCRIPT_DIR="${OBS_SCRIPT_PLUGIN_PATH}" $<$<BOOL:${ENABLE_UI}>:ENABLE_UI>
+  PRIVATE SCRIPT_DIR="${OBS_SCRIPT_PLUGIN_PATH}" $<$<BOOL:${ENABLE_FRONTEND}>:ENABLE_FRONTEND>
 )
 
 target_include_directories(obs-scripting PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}")
@@ -40,7 +40,7 @@ target_link_libraries(
   PRIVATE
     OBS::libobs
     OBS::cstrcache
-    $<$<BOOL:${ENABLE_UI}>:OBS::frontend-api>
+    $<$<BOOL:${ENABLE_FRONTEND}>:OBS::frontend-api>
     $<$<PLATFORM_ID:Windows>:OBS::w32-pthreads>
     $<$<PLATFORM_ID:Darwin>:objc>
 )

shared/obs-scripting/cmake/lua.cmake

@@ -19,7 +19,7 @@ if(ENABLE_SCRIPTING_LUA)
   target_sources(
     obs-scripting
     PRIVATE
-      $<$<BOOL:${ENABLE_UI}>:obs-scripting-lua-frontend.c>
+      $<$<BOOL:${ENABLE_FRONTEND}>:obs-scripting-lua-frontend.c>
       obs-scripting-lua-source.c
       obs-scripting-lua.c
       obs-scripting-lua.h

shared/obs-scripting/cmake/python.cmake

@@ -27,7 +27,7 @@ if(ENABLE_SCRIPTING_PYTHON)
   target_sources(
     obs-scripting
     PRIVATE
-      $<$<BOOL:${ENABLE_UI}>:obs-scripting-python-frontend.c>
+      $<$<BOOL:${ENABLE_FRONTEND}>:obs-scripting-python-frontend.c>
       $<$<PLATFORM_ID:Windows,Darwin>:obs-scripting-python-import.c>
       obs-scripting-python-import.h
       obs-scripting-python.c

shared/obs-scripting/obs-scripting-config.h.in

@@ -26,4 +26,4 @@
 #define SCRIPT_DIR     "@OBS_SCRIPT_PLUGIN_PATH@"
 #define PYTHON_LIB     "@OBS_SCRIPT_PYTHON_PATH@"
 
-#define UI_ENABLED     @ENABLE_UI@
+#define UI_ENABLED     @ENABLE_FRONTEND@

shared/obs-scripting/obs-scripting-lua.c

@@ -72,7 +72,7 @@ static void add_hook_functions(lua_State *script);
 static int obs_lua_remove_tick_callback(lua_State *script);
 static int obs_lua_remove_main_render_callback(lua_State *script);
 
-#ifdef ENABLE_UI
+#ifdef ENABLE_FRONTEND
 void add_lua_frontend_funcs(lua_State *script);
 #endif
 
@@ -112,7 +112,7 @@ static bool load_lua_script(struct obs_lua_script *data)
 
 	add_lua_source_functions(script);
 	add_hook_functions(script);
-#ifdef ENABLE_UI
+#ifdef ENABLE_FRONTEND
 	add_lua_frontend_funcs(script);
 #endif
 

shared/obs-scripting/obslua/CMakeLists.txt

@@ -33,12 +33,12 @@ target_compile_options(
 
 target_compile_definitions(
   obslua
-  PRIVATE SWIG_TYPE_TABLE=obslua SWIG_LUA_INTERPRETER_NO_DEBUG $<$<BOOL:${ENABLE_UI}>:ENABLE_UI>
+  PRIVATE SWIG_TYPE_TABLE=obslua SWIG_LUA_INTERPRETER_NO_DEBUG $<$<BOOL:${ENABLE_FRONTEND}>:ENABLE_FRONTEND>
 )
 
 target_link_libraries(
   obslua
-  PRIVATE OBS::cstrcache OBS::libobs OBS::scripting Luajit::Luajit $<$<BOOL:${ENABLE_UI}>:OBS::frontend-api>
+  PRIVATE OBS::cstrcache OBS::libobs OBS::scripting Luajit::Luajit $<$<BOOL:${ENABLE_FRONTEND}>:OBS::frontend-api>
 )
 
 set_property(
@@ -48,7 +48,7 @@ set_property(
     SWIG_COMPILE_DEFINITIONS
       "SWIG_TYPE_TABLE=obslua"
       "SWIG_LUA_INTERPRETER_NO_DEBUG"
-      "$<$<BOOL:${ENABLE_UI}>:ENABLE_UI>"
+      "$<$<BOOL:${ENABLE_FRONTEND}>:ENABLE_FRONTEND>"
 )
 
 set_target_properties_obs(obslua PROPERTIES FOLDER scripting XCODE_ATTRIBUTE_STRIP_STYLE non-global)

shared/obs-scripting/obslua/obslua.i

@@ -26,7 +26,7 @@
 #include <util/platform.h>
 #include <util/config-file.h>
 
-#if defined(ENABLE_UI)
+#if defined(ENABLE_FRONTEND)
 #include "obs-frontend-api.h"
 #endif
 
@@ -106,6 +106,6 @@ static inline void wrap_blog(int log_level, const char *message)
 %include "util/platform.h"
 %include "util/config-file.h"
 
-#if defined(ENABLE_UI)
+#if defined(ENABLE_FRONTEND)
 %include "obs-frontend-api.h"
 #endif

shared/obs-scripting/obspython/CMakeLists.txt

@@ -58,7 +58,7 @@ target_compile_definitions(
     SWIG_TYPE_TABLE=obspython
     Py_ENABLE_SHARED=1
     SWIG_PYTHON_INTERPRETER_NO_DEBUG
-    $<$<BOOL:${ENABLE_UI}>:ENABLE_UI>
+    $<$<BOOL:${ENABLE_FRONTEND}>:ENABLE_FRONTEND>
 )
 
 target_link_libraries(
@@ -67,7 +67,7 @@ target_link_libraries(
     OBS::cstrcache
     OBS::libobs
     OBS::scripting
-    $<$<BOOL:${ENABLE_UI}>:OBS::frontend-api>
+    $<$<BOOL:${ENABLE_FRONTEND}>:OBS::frontend-api>
     $<$<NOT:$<PLATFORM_ID:Darwin>>:Python::Python>
 )
 
@@ -92,7 +92,7 @@ set_property(
       "SWIG_TYPE_TABLE=obspython"
       "Py_ENABLE_SHARED=1"
       "SWIG_PYTHON_INTERPRETER_NO_DEBUG"
-      "$<$<BOOL:${ENABLE_UI}>:ENABLE_UI>"
+      "$<$<BOOL:${ENABLE_FRONTEND}>:ENABLE_FRONTEND>"
       "$<$<PLATFORM_ID:Windows>:MS_NO_COREDLL>"
 )
 

shared/obs-scripting/obspython/obspython.i

@@ -27,7 +27,7 @@
 #include <util/platform.h>
 #include <util/config-file.h>
 
-#if defined(ENABLE_UI)
+#if defined(ENABLE_FRONTEND)
 #include "obs-frontend-api.h"
 #endif
 
@@ -128,7 +128,7 @@ static inline void wrap_blog(int log_level, const char *message)
 %include "util/platform.h"
 %include "util/config-file.h"
 
-#if defined(ENABLE_UI)
+#if defined(ENABLE_FRONTEND)
 %include "obs-frontend-api.h"
 #endif