Error trying FEATURE_HDR_EXTENDED

[gerk.raisen]

I was trying for the first time the FEATURE_HDR_EXTENDED but compiling I receive this error:

../../src/hdr.c: In function 'hdrv_extended_shutter_display':
../../src/hdr.c:93:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
../../src/hdr.c: In function 'hdrv_extended_iso_display':
../../src/hdr.c:162:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
../../src/hdr.c: In function 'hdr_step':
../../src/hdr.c:230:13: error: 'FRAME_SHUTTER_TIMER' undeclared (first use in this function)
../../src/hdr.c:230:13: note: each undeclared identifier is reported only once for each function it appears in
make[1]: *** [hdr.o] Error 1

From what I understand it seems that the FRAME_SHUTTER_TIMER is not set, it's correct?
I checked in the file and seems that is true, is missing.

Thank you.

[1%]

they are in fps-engio.c but need to be defined in consts.h again for this to compile.