Fix deployment of render process on linux

When deployed on linux qwebengineprocess ends in libexec and
needs qt.conf otherwise qt libraries prefix render process is unknown
and running the process will fail.

Pick-to: 6.9 6.8
Change-Id: If44d4689d11eb8a9f25e2aee28ddef73861575ad
Reviewed-by: Joerg Bornemann <[email protected]>
Reviewed-by: Alexandru Croitor <[email protected]>

Author: Michal Klocek

src/core/api/Qt6WebEngineCoreDeploySupport.cmake

@@ -102,6 +102,15 @@ function(_qt_internal_deploy_webenginecore_binary)
         )
     endif()
 
+    if(NOT __QT_DEPLOY_SYSTEM_NAME STREQUAL "Windows")
+        qt6_deploy_qt_conf("${install_destination}/qt.conf"
+            PREFIX "${QT_DEPLOY_PREFIX}"
+            BIN_DIR "${QT_DEPLOY_BIN_DIR}"
+            LIB_DIR "${QT_DEPLOY_LIB_DIR}"
+            PLUGINS_DIR "${QT_DEPLOY_PLUGINS_DIR}"
+            QML_DIR "${QT_DEPLOY_QML_DIR}"
+        )
+    endif()
     # Checking for __QT_DEPLOY_MUST_ADJUST_PLUGINS_RPATH is a bit strange because this is not a
     # plugin, but it gives a single common way to detect when the rpath adjustment must be done,
     # because the lib dir is different than the original Qt configured one.