cmake,lib,base: Export obs-websocket-api as a target

This enables the installation of the header in the include directory

CMakeLists.txt

@@ -5,6 +5,8 @@ legacy_check()
 set(obs-websocket_VERSION 5.3.5)
 set(OBS_WEBSOCKET_RPC_VERSION 1)
 
+add_subdirectory(lib)
+
 option(ENABLE_WEBSOCKET "Enable building OBS with websocket plugin" ON)
 if(NOT ENABLE_WEBSOCKET)
   target_disable(obs-websocket)
@@ -34,7 +36,6 @@ add_library(OBS::websocket ALIAS obs-websocket)
 target_sources(
   obs-websocket
   PRIVATE # cmake-format: sortable
-          lib/obs-websocket-api.h
           src/Config.cpp
           src/Config.h
           src/forms/ConnectInfo.cpp
@@ -154,6 +155,7 @@ target_link_libraries(
   obs-websocket
   PRIVATE OBS::libobs
           OBS::frontend-api
+          OBS::websocket-api
           Qt::Core
           Qt::Widgets
           Qt::Svg

cmake/legacy.cmake

@@ -3,6 +3,8 @@ set(OBS_WEBSOCKET_RPC_VERSION 1)
 
 option(ENABLE_WEBSOCKET "Enable building OBS with websocket plugin" ON)
 
+add_subdirectory(lib)
+
 if(NOT ENABLE_WEBSOCKET OR NOT ENABLE_UI)
   message(STATUS "OBS:  DISABLED   obs-websocket")
   return()
@@ -56,7 +58,6 @@ target_sources(
           src/obs-websocket.h
           src/Config.cpp
           src/Config.h
-          lib/obs-websocket-api.h
           src/forms/SettingsDialog.cpp
           src/forms/SettingsDialog.h
           src/forms/ConnectInfo.cpp
@@ -133,6 +134,7 @@ target_link_libraries(
   obs-websocket
   PRIVATE OBS::libobs
           OBS::frontend-api
+          OBS::websocket-api
           Qt::Core
           Qt::Widgets
           Qt::Svg

lib/CMakeLists.txt

@@ -0,0 +1,22 @@
+cmake_minimum_required(VERSION 3.22...3.25)
+
+legacy_check()
+
+add_library(obs-websocket-api INTERFACE)
+add_library(OBS::websocket-api ALIAS obs-websocket-api)
+
+target_sources(obs-websocket-api INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/obs-websocket-api.h>
+                                           $<INSTALL_INTERFACE:${OBS_INCLUDE_DESTINATION}/obs-websocker-api.h>)
+
+target_link_libraries(obs-websocket-api INTERFACE OBS::libobs)
+
+target_include_directories(obs-websocket-api INTERFACE "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>"
+                                                       "$<INSTALL_INTERFACE:${OBS_INCLUDE_DESTINATION}>")
+
+set_target_properties(
+  obs-websocket-api
+  PROPERTIES FOLDER websocket
+             PREFIX ""
+             PUBLIC_HEADER obs-websocket-api.h)
+
+target_export(obs-websocket-api)

lib/cmake/legacy.cmake

@@ -0,0 +1,20 @@
+if(POLICY CMP0090)
+  cmake_policy(SET CMP0090 NEW)
+endif()
+
+project(obs-websocket-api)
+
+add_library(obs-websocket-api INTERFACE)
+add_library(OBS::websocket-api ALIAS obs-websocket-api)
+
+target_sources(obs-websocket-api INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/obs-websocket-api.h>
+                                           $<INSTALL_INTERFACE:${OBS_INCLUDE_DESTINATION}/obs-websocket-api.h>)
+
+target_link_libraries(obs-websocket-api INTERFACE OBS::libobs)
+
+target_include_directories(obs-websocket-api INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
+                                                       $<INSTALL_INTERFACE:${OBS_INCLUDE_DESTINATION}>)
+
+set_target_properties(obs-websocket-api PROPERTIES FOLDER "websocket" PUBLIC_HEADER obs-websocket-api.h)
+
+export_target(obs-websocket-api)

lib/cmake/obs-websocket-apiConfig.cmake.in

@@ -0,0 +1,8 @@
+@PACKAGE_INIT@
+
+include(CMakeFindDependencyMacro)
+
+find_dependency(libobs REQUIRED)
+
+include("${CMAKE_CURRENT_LIST_DIR}/@[email protected]")
+check_required_components("@PROJECT_NAME@")

src/WebSocketApi.h

@@ -24,8 +24,7 @@ with this program. If not, see <https://www.gnu.org/licenses/>
 #include <mutex>
 #include <shared_mutex>
 #include <obs.h>
-
-#include "../lib/obs-websocket-api.h"
+#include <obs-websocket-api.h>
 
 class WebSocketApi {
 public: