From 4ceceea94a37abf29ba31c7faa806b838b167c0a Mon Sep 17 00:00:00 2001
From: Nyall Dawson <nyall.dawson@gmail.com>
Date: Fri, 15 Dec 2023 09:29:23 +1000
Subject: [PATCH] Add WITH_QTWEBENGINE cmake flag

Logic is:
- Cannot be enabled if webkit support is enabled (to simplify
  logic in QGIS classes - if webkit is enabled, then webkit
  widgets will be used. if webengine is enabled, then
  webengine widgets will be used)
- Cannot be enabled if QGIS 3D support is enabled (due to
  incompatibility between webengine and Qt3D framework)
---
 CMakeLists.txt                 | 16 ++++++++++++++++
 cmake_templates/qgsconfig.h.in |  2 ++
 2 files changed, 18 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e72bbe41236..5de465bde66 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -510,6 +510,22 @@ if(WITH_CORE)
     set(HAVE_3D TRUE)  # used in qgsconfig.h
   endif()
 
+  set (WITH_QTWEBENGINE FALSE CACHE BOOL "Enable QtWebEngine support")
+  if (WITH_QTWEBENGINE)
+    if(WITH_3D)
+      message(FATAL_ERROR "QtWebEngine support cannot be enabled if QGIS 3D support is enabled")
+    endif()
+    if(WITH_QTWEBKIT)
+      message(FATAL_ERROR "QtWebEngine support cannot be enabled if Qt WebKit support is enabled")
+    endif()
+    add_definitions(-DWITH_QTWEBENGINE)
+    message(STATUS "QtWebEngine support enabled")
+    set(HAVE_WEBENGINE TRUE)  # used in qgsconfig.h
+  else()
+    message(STATUS "QtWebEngine support DISABLED.")
+    set(HAVE_WEBENGINE FALSE)  # used in qgsconfig.h
+  endif()
+
   # get the Qt plugins directory
   get_target_property(QMAKE_EXECUTABLE ${QT_VERSION_BASE}::qmake LOCATION)
 
diff --git a/cmake_templates/qgsconfig.h.in b/cmake_templates/qgsconfig.h.in
index 800e65d3cfd..0a8742f2b61 100644
--- a/cmake_templates/qgsconfig.h.in
+++ b/cmake_templates/qgsconfig.h.in
@@ -122,5 +122,7 @@
 
 #cmakedefine HAVE_CRASH_HANDLER
 
+#cmakedefine HAVE_WEBENGINE
+
 #endif