tvheadend-make-build-fail.mk

/.tvh_build) PID 5392 
GNU Make 4.2.1
Built for x86_64-pc-linux-gnu
Copyright (C) 1988-2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Reading makefiles...
Reading makefile 'Makefile'...
Reading makefile 'config.mk' (search path) (no ~ expansion)...
Reading makefile 'focal-x86_64-linux-gcc.mk' (search path) (no ~ expansion)...
Reading makefile '/focal.mk' (search path) (no ~ expansion)...
Updating makefiles....
 Considering target file '/focal.mk'.
  File '/focal.mk' does not exist.
  Looking for an implicit rule for '/focal.mk'.
  Trying pattern rule with stem 'focal.mk'.
  Trying implicit prerequisite '/focal.mk,v'.
  Trying pattern rule with stem 'focal.mk'.
  Trying implicit prerequisite '/RCS/focal.mk,v'.
  Trying pattern rule with stem 'focal.mk'.
  Trying implicit prerequisite '/RCS/focal.mk'.
  Trying pattern rule with stem 'focal.mk'.
  Trying implicit prerequisite '/s.focal.mk'.
  Trying pattern rule with stem 'focal.mk'.
  Trying implicit prerequisite '/SCCS/s.focal.mk'.
  No implicit rule found for '/focal.mk'.
  Finished prerequisites of target file '/focal.mk'.
 Must remake target '/focal.mk'.
make[2]: Entering directory '/build/tvheadend/build.linux/ffmpeg/libvpx-1.7.0'
Makefile:339: /focal.mk: No such file or directory
make[2]: *** No rule to make target '/focal.mk'.  Stop.
make[2]: Leaving directory '/build/tvheadend/build.linux/ffmpeg/libvpx-1.7.0'
Reaping losing child 0x55625c5754e0 PID 5392 
make[1]: *** [Makefile.ffmpeg:320: /build/tvheadend/build.linux/ffmpeg/libvpx-1.7.0/.tvh_build] Error 2
Removing child 0x55625c5754e0 PID 5392 from chain.
make[1]: Leaving directory '/build/tvheadend'
Reaping losing child 0x55d66c436230 PID 4533 
make: *** [Makefile:782: /build/tvheadend/build.linux/ffmpeg/build/ffmpeg/lib/libavcodec.a] Error 2
Removing child 0x55d66c436230 PID 4533 from chain.
root@a55f127a5271:/build/tvheadend#