Hi, from the logs:
[...] read_config_lex.l:25:28: fatal error: read_config_yy.h: No such file or directory #include "read_config_yy.h" ^ compilation terminated. Makefile:662: recipe for target 'read_config_lex.o' failed make[3]: *** [read_config_lex.o] Error 1 make[3]: *** Waiting for unfinished jobs.... updating read_config_yy.h [...] Note how the read_config_yy.h file is generated *after* the build process tries to use it. We have a race condition? I can't explain this. It seems to only happen in some arches but not all. Reference: https://buildd.debian.org/status/fetch.php?pkg=conntrack-tools&arch=arm64&ver=1%3A1.4.4%2Bsnapshot20161117-3&stamp=1480938247