Taken from: https://sources.debian.org/patches/openjfx/11.0.2+1-1/disable-jit-for-non-x86.patch
--- old/build.gradle
+++ new/build.gradle
@@ -3897,11 +3897,17 @@
                         cmakeArgs = " $cmakeArgs -DCMAKE_OSX_DEPLOYMENT_TARGET=$MACOSX_MIN_VERSION -DCMAKE_OSX_SYSROOT=$MACOSX_SDK_PATH"
                     } else if (t.name == "linux") {
                         cmakeArgs = " $cmakeArgs -DCMAKE_SYSTEM_NAME=Linux"
+                        /*
                         if (IS_64) {
                             cmakeArgs = "$cmakeArgs -DCMAKE_SYSTEM_PROCESSOR=x86_64"
                         } else {
                             cmakeArgs = "$cmakeArgs -DCMAKE_SYSTEM_PROCESSOR=i586"
                         }
+                        */
+                        if ( OS_ARCH != "amd64" && OS_ARCH != "i386" ) {
+                            cmakeArgs = "$cmakeArgs -DENABLE_JIT=OFF"
+                        }
+                        cmakeArgs = "$cmakeArgs -DCMAKE_SYSTEM_PROCESSOR=$OS_ARCH"
                         // TODO: Use cflags and ldflags from all platforms
                         def cFlags = webkitProperties.ccFlags?.join(' ') ?: ''
                         def lFlags = webkitProperties.linkFlags?.join(' ') ?: ''