Determining if the include file execinfo.h exists failed with the following output:
Change Dir: /home/naourr/work/instance-2/output-1/build/domoticz-2020.1/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/gmake cmTC_7c80b/fast && gmake[1]: Entering directory '/home/naourr/work/instance-2/output-1/build/domoticz-2020.1/CMakeFiles/CMakeTmp'
/usr/bin/gmake  -f CMakeFiles/cmTC_7c80b.dir/build.make CMakeFiles/cmTC_7c80b.dir/build
gmake[2]: Entering directory '/home/naourr/work/instance-2/output-1/build/domoticz-2020.1/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_7c80b.dir/CheckIncludeFile.c.o
/home/naourr/work/instance-2/output-1/host/bin/or1k-linux-gcc --sysroot=/home/naourr/work/instance-2/output-1/host/or1k-buildroot-linux-uclibc/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os   -DNDEBUG   -o CMakeFiles/cmTC_7c80b.dir/CheckIncludeFile.c.o   -c /home/naourr/work/instance-2/output-1/build/domoticz-2020.1/CMakeFiles/CMakeTmp/CheckIncludeFile.c
/home/naourr/work/instance-2/output-1/build/domoticz-2020.1/CMakeFiles/CMakeTmp/CheckIncludeFile.c:1:10: fatal error: execinfo.h: No such file or directory
    1 | #include <execinfo.h>
      |          ^~~~~~~~~~~~
compilation terminated.
gmake[2]: *** [CMakeFiles/cmTC_7c80b.dir/build.make:86: CMakeFiles/cmTC_7c80b.dir/CheckIncludeFile.c.o] Error 1
gmake[2]: Leaving directory '/home/naourr/work/instance-2/output-1/build/domoticz-2020.1/CMakeFiles/CMakeTmp'
gmake[1]: *** [Makefile:141: cmTC_7c80b/fast] Error 2
gmake[1]: Leaving directory '/home/naourr/work/instance-2/output-1/build/domoticz-2020.1/CMakeFiles/CMakeTmp'