Hmm, there is a very suspicious dir showing up: echo "#include <limits.h>" | gcc -E -Wp,-v - ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu" ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/9/../../../../x86_64-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc/x86_64-linux-gnu/9/include /usr/local/include /usr/lib/gcc/x86_64-linux-gnu/9/include-fixed /usr/include/x86_64-linux-gnu /usr/include
=> /usr/lib/gcc/x86_64-linux-gnu/9/include-fixed And that is where it is pulling the header from: test.e:12:# 1 "/usr/lib/gcc/x86_64-linux-gnu/9/include-fixed/limits.h" 1 3 4 That is missing on the other arch! x86: $ dpkg -S /usr/lib/gcc/x86_64-linux-gnu/9/include-fixed/limits.h $ dpkg -l libgcc-9-dev ii libgcc-9-dev:amd64 9.2.1-30ubuntu2 amd64 GCC support library (development files) On s390 it has the same package version, but it misses that -fixed dir. root@f:~/chrony-3.5# ll -d1 /usr/lib/gcc/*-linux-gnu/9/incl* drwxr-xr-x 3 root root 101 Mar 2 09:50 /usr/lib/gcc/x86_64-linux-gnu/9/include/ drwxr-xr-x 3 root root 7 Mar 2 09:50 /usr/lib/gcc/x86_64-linux-gnu/9/include-fixed/ ubuntu@focal-ftbfs:~/chrony-3.5$ ll -d1 /usr/lib/gcc/*-linux-gnu/9/incl* drwxr-xr-x 3 root root 4096 Mar 13 07:31 /usr/lib/gcc/s390x-linux-gnu/9/include/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1867316 Title: Almost global FTFBS due to dropping include-fixed dir in 9.3.0-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chrony/+bug/1867316/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs