Bug#1145004: Fails to compile eBPF programs on ppc64, sparc64 and x32

Package: gcc-bpf
Version: 21
Severity: normal
X-Debbugs-Cc: [email protected], [email protected], [email protected]
User: [email protected]
Usertags: ppc64
User: [email protected]
Usertags: sparc64
User: [email protected]
Usertags: x32

In https://salsa.debian.org/utopia-team/network-manager/-/merge_requests/18
support for CLAT (464XLAT) in NetworkManager was enabled.
It is implemented using an eBPF program.

This resulted in build failures on ppc64, sparc64 and x32 (and alpha).


ppc64
=====
https://buildd.debian.org/status/fetch.php?pkg=network-manager&arch=ppc64&ver=1.58.0-3&stamp=1786826236&raw=0

/usr/bin/bpf-gcc -std=gnu17 -Wunused -Wimplicit-fallthrough -fno-stack-protector -fno-ssa-phiopt -O2 -mcpu=v3 -mco-re -gbtf -c -D__powerpc64__ -D__TARGET_ARCH_powerpc -D_CALL_ELF=2 -mbig-endian -I. -isystem /usr/include/powerpc64-linux-gnu -idirafter /usr/include ../src/core/bpf/clat.bpf.c -o src/core/bpf/clat.bpf.unstripped.o
In file included from /usr/include/features.h:563,
                 from /usr/include/powerpc64-linux-gnu/sys/socket.h:22,
                 from /usr/include/linux/if.h:28,
                 from /usr/include/linux/icmp.h:23,
                 from ../src/core/bpf/clat.bpf.c:16:
/usr/include/powerpc64-linux-gnu/gnu/stubs.h:14:11: fatal error: gnu/stubs-64-v2.h: No such file or directory
   14 | # include <gnu/stubs-64-v2.h>
      |           ^~~~~~~~~~~~~~~~~~~
compilation terminated.

sparc64
=======
https://buildd.debian.org/status/fetch.php?pkg=network-manager&arch=sparc64&ver=1.58.0-3&stamp=1786827038&raw=0

/usr/bin/bpf-gcc -std=gnu17 -Wunused -Wimplicit-fallthrough -fno-stack-protector -fno-ssa-phiopt -O2 -mcpu=v3 -mco-re -gbtf -c -D__sparc64__ -mbig-endian -I. -isystem /usr/include/sparc64-linux-gnu -idirafter /usr/include ../src/core/bpf/clat.bpf.c -o src/core/bpf/clat.bpf.unstripped.o
In file included from /usr/include/features.h:563,
                 from /usr/include/sparc64-linux-gnu/sys/socket.h:22,
                 from /usr/include/linux/if.h:28,
                 from /usr/include/linux/icmp.h:23,
                 from ../src/core/bpf/clat.bpf.c:16:
/usr/include/sparc64-linux-gnu/gnu/stubs.h:8:11: fatal error: gnu/stubs-32.h: No such file or directory
    8 | # include <gnu/stubs-32.h>
      |           ^~~~~~~~~~~~~~~~
compilation terminated.

x32
===
https://buildd.debian.org/status/fetch.php?pkg=network-manager&arch=sparc64&ver=1.58.0-3&stamp=1786827038&raw=0

/usr/bin/bpf-gcc -std=gnu17 -Wunused -Wimplicit-fallthrough -fno-stack-protector -fno-ssa-phiopt -O2 -mcpu=v3 -mco-re -gbtf -c -D__x86_64__ -mlittle-endian -I. -isystem /usr/include/x86_64-linux-gnux32 -idirafter /usr/include ../src/core/bpf/clat.bpf.c -o src/core/bpf/clat.bpf.unstripped.o
In file included from /usr/include/features.h:563,
                 from /usr/include/x86_64-linux-gnux32/sys/socket.h:22,
                 from /usr/include/linux/if.h:28,
                 from /usr/include/linux/icmp.h:23,
                 from ../src/core/bpf/clat.bpf.c:16:
/usr/include/x86_64-linux-gnux32/gnu/stubs.h:10:11: fatal error: gnu/stubs-64.h: No such file or directory
   10 | # include <gnu/stubs-64.h>
      |           ^~~~~~~~~~~~~~~~
compilation terminated.


On IRC, jrtc27 and waldi said this:

jrtc27
======
sparc64 is identified by __sparc__ && __arch64__, there is no __sparc64__ in the linux world
(some BSDs do however use it)
note __aarch64__ != __aarch64__ :)
... sigh I mistyped it there, just proves my point
__arch64__ != __aarch64__
waldi
=====
jrtc27: so the -D__sparc64__ was never correct
jrtc27
======
it's never been the right define for sparc64-linux-gnu, no
some software recognises it because it's confused
some software recognises it because of BSDs
(and some software recognises __sparcv9__ because of solaris)
some software recognises it because it's confused
https://wiki.debian.org/ArchitectureSpecificsMemo#Summary is your friend



Regards,
Michael


-- System Information:
Debian Release: forky/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 7.1.8+deb14.1-amd64 (SMP w/16 CPU threads; PREEMPT)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gcc-bpf depends on:
pn  binutils-bpf  <none>
ii  libc6         2.43-3
ii  libgmp10      2:6.3.0+dfsg-5+b2
ii  libmpc3       1.3.1-3
ii  libmpfr6      4.2.2-3
ii  libzstd1      1.5.7+dfsg-4
ii  zlib1g        1:1.3.dfsg+really1.3.2-3

gcc-bpf recommends no packages.

gcc-bpf suggests no packages.