pamaury-rockbox-5476144 build error

CC apps/codecs/libspeex/oggframing.c
CC apps/codecs/libspeex/stereo.c
CC apps/codecs/libspeex/speex_header.c
CC apps/codecs/libspeex/filters_arm4.S
AR libspeex-voice.a
CC lib/skin_parser/skin_buffer.c
CC lib/skin_parser/skin_parser.c
CC lib/skin_parser/skin_scan.c
CC lib/skin_parser/tag_table.c
AR libskin_parser.a
PP ram.link
LD rockbox.elf
/home/patrikas/Downloads/rockbox/build/firmware/libfirmware.a(usb_test.o): In function `usb_test_disconnect':
usb_test.c:(.text+0xc8): undefined reference to `remove_thread'
/home/patrikas/Downloads/rockbox/build/firmware/libfirmware.a(usb_test.o): In function `usb_test_set_interface':
usb_test.c:(.text+0xfc): undefined reference to `_logf'
/home/patrikas/Downloads/rockbox/build/firmware/libfirmware.a(usb_test.o): In function `usb_test_init':
usb_test.c:(.text+0x15c): undefined reference to `_logf'
/home/patrikas/Downloads/rockbox/build/firmware/libfirmware.a(usb_test.o): In function `usb_test_init_connection':
usb_test.c:(.text+0x304): undefined reference to `_logf'
/home/patrikas/Downloads/rockbox/build/firmware/libfirmware.a(usb_test.o): In function `usb_test_stat_req':
usb_test.c:(.text+0x638): undefined reference to `_logf'
/home/patrikas/Downloads/rockbox/build/firmware/libfirmware.a(usb-drv-arc.o): In function `usb_drv_int':
usb-drv-arc.c:(.text+0x1634): undefined reference to `_logf'
collect2: ld returned 1 exit status
gmake: *** [/home/patrikas/Downloads/rockbox/build/rockbox.elf] Error 1
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