Index: webkitgtk-2.52.1/Source/cmake/OptionsGTK.cmake
===================================================================
--- webkitgtk-2.52.1.orig/Source/cmake/OptionsGTK.cmake
+++ webkitgtk-2.52.1/Source/cmake/OptionsGTK.cmake
@@ -91,6 +91,14 @@ else ()
     WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_RESOURCE_USAGE PRIVATE OFF)
 endif ()
 
+# Enable variation fonts when cairo >= 1.16, fontconfig >= 2.13.0, freetype >= 2.9.0 and harfbuzz >= 1.4.2.
+if (("${PC_CAIRO_VERSION}" VERSION_GREATER "1.16.0" OR "${PC_CAIRO_VERSION}" STREQUAL "1.16.0")
+    AND ("${PC_FONTCONFIG_VERSION}" VERSION_GREATER "2.13.0" OR "${PC_FONTCONFIG_VERSION}" STREQUAL "2.13.0")
+    AND ("${FREETYPE_VERSION_STRING}" VERSION_GREATER "2.9.0" OR "${FREETYPE_VERSION_STRING}" STREQUAL "2.9.0")
+    AND ("${PC_HARFBUZZ_VERSION}" VERSION_GREATER "1.4.2" OR "${PC_HARFBUZZ_VERSION}" STREQUAL "1.4.2"))
+    WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_VARIATION_FONTS PRIVATE ON)
+endif ()
+
 # Public options shared with other WebKit ports. Do not add any options here
 # without approval from a GTK reviewer. There must be strong reason to support
 # changing the value of the option.
@@ -132,7 +140,6 @@ WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_
 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_PERIODIC_MEMORY_MONITOR PRIVATE ON)
 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_POINTER_LOCK PRIVATE ON)
 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_SHAREABLE_RESOURCE PRIVATE ON)
-WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_VARIATION_FONTS PRIVATE ON)
 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_WEB_API_STATISTICS PRIVATE ON)
 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_WEB_CODECS PRIVATE ON)
 WEBKIT_OPTION_DEFAULT_PORT_VALUE(ENABLE_WEB_RTC PRIVATE ${ENABLE_EXPERIMENTAL_FEATURES})
@@ -270,7 +277,7 @@ SET_AND_EXPOSE_TO_BUILD(HAVE_GTK_UNIX_PR
 if (USE_SKIA)
     SET_AND_EXPOSE_TO_BUILD(USE_CAIRO FALSE)
 else ()
-    find_package(Fontconfig 2.13.0 REQUIRED)
+    find_package(Fontconfig 2.12.6 REQUIRED)
     find_package(Freetype 2.9.0 REQUIRED)
     SET_AND_EXPOSE_TO_BUILD(USE_CAIRO TRUE)
 endif ()