Determining if the include file execinfo.h exists failed with the following output:
Change Dir: /home/test/autobuild/run/instance-0/output/build/domoticz-4.9700/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_eee4c/fast"
make[1]: Entering directory `/home/test/autobuild/run/instance-0/output/build/domoticz-4.9700/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_eee4c.dir/build.make CMakeFiles/cmTC_eee4c.dir/build
make[2]: Entering directory `/home/test/autobuild/run/instance-0/output/build/domoticz-4.9700/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_eee4c.dir/CheckIncludeFile.c.o
/home/test/autobuild/run/instance-0/output/host/bin/mipsel-linux-gcc --sysroot=/home/test/autobuild/run/instance-0/output/host/mipsel-buildroot-linux-uclibc/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os   -DNDEBUG   -o CMakeFiles/cmTC_eee4c.dir/CheckIncludeFile.c.o   -c /home/test/autobuild/run/instance-0/output/build/domoticz-4.9700/CMakeFiles/CMakeTmp/CheckIncludeFile.c
/home/test/autobuild/run/instance-0/output/build/domoticz-4.9700/CMakeFiles/CMakeTmp/CheckIncludeFile.c:1:22: fatal error: execinfo.h: No such file or directory
 #include <execinfo.h>
                      ^
compilation terminated.
make[2]: *** [CMakeFiles/cmTC_eee4c.dir/CheckIncludeFile.c.o] Error 1
make[2]: Leaving directory `/home/test/autobuild/run/instance-0/output/build/domoticz-4.9700/CMakeFiles/CMakeTmp'
make[1]: *** [cmTC_eee4c/fast] Error 2
make[1]: Leaving directory `/home/test/autobuild/run/instance-0/output/build/domoticz-4.9700/CMakeFiles/CMakeTmp'