[Bug 1867316] Re: FTFBS in Focal armhf/ppc64/s390x

[Christian Ehrhardt ]

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 at 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 at 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/

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https://bugs.launchpad.net/bugs/1867316

Title:
  Almost global FTFBS due to dropping include-fixed dir in 9.3.0-1

Status in chrony package in Ubuntu:
  Invalid
Status in gcc-9 package in Ubuntu:
  Confirmed
Status in glibc package in Ubuntu:
  Invalid
Status in linux package in Ubuntu:
  Invalid

Bug description:
  This seems an almost global FTBFS with anything that includes limits.h

  $ cat > test.c << EOF
  > /*
  > * Test FTBFS 1867316
  > */
  >
  > #include <limits.h>
  > EOF
  ubuntu at focal-ftbfs:~/chrony-3.5$ gcc -c test.c
  In file included from test.c:5:
  /usr/include/limits.h:124:26: error: no include path in which to search for limits.h
    124 | # include_next <limits.h>
        | ^

  Interestingly this fails on armhf/ppc64/s390x but works on x86.

  
  --- started as a chrony FTBFS despite tetsing a few hours before ---

  For bug 1866753 we built this yesterday in a proposed PPA and things worked!
  Now today on the final upload it failed to build on armhf/ppc64/s390x.

  In file included from /usr/include/powerpc64le-linux-gnu/sys/param.h:26,
                   from /usr/include/resolv.h:56,
                   from nameserv.c:34:
  /usr/include/limits.h:124:26: error: no include path in which to search for limits.h
    124 | # include_next <limits.h>
        |                          ^
  make[1]: *** [Makefile:108: nameserv.o] Error 1

  The same error on all of them.

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