make[1]: Entering directory '/usr/src/dahdi-linux-3.4.0/drivers/dahdi/firmware'
make[1]: Leaving directory '/usr/src/dahdi-linux-3.4.0/drivers/dahdi/firmware'
make -C /usr/src/linux-next M=/usr/src/dahdi-linux-3.4.0/drivers/dahdi DAHDI_INCLUDE=/usr/src/dahdi-linux-3.4.0/include DAHDI_MODULES_EXTRA=" " HOTPLUG_FIRMWARE=yes modules DAHDI_BUILD_ALL=m
make[1]: Entering directory '/usr/src/linux-next'
make[2]: Entering directory '/usr/src/dahdi-linux-3.4.0/drivers/dahdi'
CC [M] wctc4xxp/base.o
CC [M] wct4xxp/base.o
CC [M] oct612x/octdeviceapi/oct6100api/oct6100_api/oct6100_adpcm_chan.o
CC [M] wctdm24xxp/base.o
oct612x/octdeviceapi/oct6100api/oct6100_api/oct6100_adpcm_chan.c:34:10: fatal error: octdef.h: No such file or directory
34 | #include "octdef.h"
| ^~~~~~~~~~
compilation terminated.
make[5]: *** [/usr/src/linux-next/scripts/Makefile.build:203: oct612x/octdeviceapi/oct6100api/oct6100_api/oct6100_adpcm_chan.o] Error 1
make[4]: *** [/usr/src/linux-next/scripts/Makefile.build:461: oct612x] Error 2
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