diff -rauN webkitgtk-2.36.3/Source/cmake/WebKitCompilerFlags.cmake webkitgtk-2.36.3-no-sse2-patch/Source/cmake/WebKitCompilerFlags.cmake
--- webkitgtk-2.36.3/Source/cmake/WebKitCompilerFlags.cmake	2022-06-02 08:44:07.302049344 +0200
+++ webkitgtk-2.36.3-no-sse2-patch/Source/cmake/WebKitCompilerFlags.cmake	2022-06-02 08:32:46.169362098 +0200
@@ -163,13 +163,13 @@
     endif ()
 
     # Force SSE2 fp on x86 builds.
-#    if (WTF_CPU_X86 AND NOT CMAKE_CROSSCOMPILING)
-#        WEBKIT_PREPEND_GLOBAL_COMPILER_FLAGS(-msse2 -mfpmath=sse)
-#        include(DetectSSE2)
-#        if (NOT SSE2_SUPPORT_FOUND)
-#            message(FATAL_ERROR "SSE2 support is required to compile WebKit")
-#        endif ()
-#    endif ()
+    if (WTF_CPU_X86 AND NOT CMAKE_CROSSCOMPILING)
+        WEBKIT_PREPEND_GLOBAL_COMPILER_FLAGS(-msse2 -mfpmath=sse)
+        include(DetectSSE2)
+        if (NOT SSE2_SUPPORT_FOUND)
+            message(FATAL_ERROR "SSE2 support is required to compile WebKit")
+        endif ()
+    endif ()
 
     # Makes builds faster. The GCC manual warns about the possibility that the assembler being
     # used may not support input from a pipe, but in practice the toolchains we support all do.
diff -rauN webkitgtk-2.36.3/Source/ThirdParty/ANGLE/src/common/platform.h webkitgtk-2.36.3-no-sse2-patch/Source/ThirdParty/ANGLE/src/common/platform.h
--- webkitgtk-2.36.3/Source/ThirdParty/ANGLE/src/common/platform.h	2022-06-02 08:45:17.042348743 +0200
+++ webkitgtk-2.36.3-no-sse2-patch/Source/ThirdParty/ANGLE/src/common/platform.h	2022-06-02 08:32:46.189362180 +0200
@@ -97,8 +97,8 @@
 #    include <intrin.h>
 #    define ANGLE_USE_SSE
 #elif defined(__GNUC__) && (defined(__x86_64__) || defined(__i386__))
-//#    include <x86intrin.h>
-//#    define ANGLE_USE_SSE
+#    include <x86intrin.h>
+#    define ANGLE_USE_SSE
 #endif
 
 // Mips and arm devices need to include stddef for size_t.
diff -rauN webkitgtk-2.36.3/Source/WTF/wtf/PlatformCPU.h webkitgtk-2.36.3-no-sse2-patch/Source/WTF/wtf/PlatformCPU.h
--- webkitgtk-2.36.3/Source/WTF/wtf/PlatformCPU.h	2022-06-02 08:46:55.912771827 +0200
+++ webkitgtk-2.36.3-no-sse2-patch/Source/WTF/wtf/PlatformCPU.h	2022-06-02 08:32:45.789360661 +0200
@@ -99,7 +99,7 @@
 #define WTF_CPU_KNOWN 1
 
 #if defined(__SSE2__) || (defined(_M_IX86_FP) && _M_IX86_FP >= 2)
-/* #define WTF_CPU_X86_SSE2 1 */
+#define WTF_CPU_X86_SSE2 1
 #endif
 
 #endif