www/webkit2-gtk3, BARM_ARCH_VERSION not defined....

[bob prohaska]

While trying to compile  www/webkit2-gtk3 an RPI2 reports 

Source/bmalloc/bmalloc/BPlatform.h:180:9: warning: 'BARM_ARCH_VERSION' is not defined, evaluates to 0 [-Wundef]
#  elif BARM_ARCH_AT_LEAST(4)
        ^
Source/bmalloc/bmalloc/BPlatform.h:84:45: note: expanded from macro 'BARM_ARCH_AT_LEAST'
#define BARM_ARCH_AT_LEAST(N) (BCPU(ARM) && BARM_ARCH_VERSION >= N)
                                            ^
Source/bmalloc/bmalloc/BPlatform.h:184:6: error: "Not supported ARM architecture"
#    error "Not supported ARM architecture"
     ^
1 warning and 1 error generated.
ninja: build stopped: subcommand failed.

Is there a simple workaround? Ports are at 441551, src is at 318674.

Thanks for reading,

bob prohaska