[Bug 1289] New: iptables build fails with kernel 4.20-rc1 - gnu_inline attributes

bugzilla-daemon at netfilter.org bugzilla-daemon at netfilter.org
Mon Nov 5 22:18:42 CET 2018 

https://bugzilla.netfilter.org/show_bug.cgi?id=1289

            Bug ID: 1289
           Summary: iptables build fails with kernel 4.20-rc1 - gnu_inline
                    attributes
           Product: iptables
           Version: unspecified
          Hardware: x86_64
                OS: Ubuntu
            Status: NEW
          Severity: normal
          Priority: P5
         Component: iptables
          Assignee: netfilter-buglog at lists.netfilter.org
          Reporter: netfilter at nmacleod.com

Cross-compiling iptables 1.8.1 for a 4.20-rc1 target fails, possibly due to
https://github.com/torvalds/linux/commit/c2c640aa04cc4e6caf0ff17ff18b3784e0c99566

The build will fail with the following errors:

        ^~~~~~
In file included from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libip6tc.c:111:
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libiptc.c:268:1:
warning: 'always_inline' attribute ignored [-Wattributes]
 static inline unsigned int
 ^~~~~~
In file included from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/linux-4.20-rc1/include/uapi/linux/stddef.h:2,
                 from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/linux-4.20-rc1/include/uapi/linux/posix_types.h:5,
                 from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/include/linux/types.h:8,
                 from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/include/libiptc/libip6tc.h:5,
                 from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libip6tc.c:30:
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/linux-4.20-rc1/include/linux/compiler_types.h:199:2:
warning: redundant redeclaration of '__maybe_unused' [-Wredundant-decls]
  __maybe_unused notrace
  ^~~~~~~~~~~~~~
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libiptc.c:268:8:
note: in expansion of macro 'inline'
 static inline unsigned int
        ^~~~~~
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/linux-4.20-rc1/include/linux/compiler_types.h:199:2:
note: previous declaration of '__maybe_unused' was here
  __maybe_unused notrace
  ^~~~~~~~~~~~~~
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libiptc.c:261:8:
note: in expansion of macro 'inline'
 static inline unsigned int
        ^~~~~~
In file included from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libip6tc.c:111:
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libiptc.c:268:15:
error: expected ',' or ';' before 'unsigned'
 static inline unsigned int
               ^~~~~~~~
In file included from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/linux-4.20-rc1/include/uapi/linux/stddef.h:2,
                 from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/linux-4.20-rc1/include/uapi/linux/posix_types.h:5,
                 from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/include/linux/types.h:8,
                 from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/include/libiptc/libip6tc.h:5,
                 from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libip6tc.c:30:
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/linux-4.20-rc1/include/linux/compiler_types.h:198:58:
error: unknown type name '__gnu_inline'
 #define inline inline __attribute__((__always_inline__)) __gnu_inline \
                                                          ^~~~~~~~~~~~
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libiptc.c:315:8:
note: in expansion of macro 'inline'
 static inline unsigned int iptcc_is_builtin(struct chain_head *c);
        ^~~~~~
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/linux-4.20-rc1/include/linux/compiler_types.h:199:2:
warning: variable '__maybe_unused' declared 'inline'
  __maybe_unused notrace
  ^~~~~~~~~~~~~~
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libiptc.c:315:8:
note: in expansion of macro 'inline'
 static inline unsigned int iptcc_is_builtin(struct chain_head *c);
        ^~~~~~
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/linux-4.20-rc1/include/linux/compiler_types.h:199:2:
error: 'no_instrument_function' attribute applies only to functions
  __maybe_unused notrace
  ^~~~~~~~~~~~~~
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libiptc.c:315:8:
note: in expansion of macro 'inline'
 static inline unsigned int iptcc_is_builtin(struct chain_head *c);
        ^~~~~~
In file included from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libip6tc.c:111:
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libiptc.c:315:1:
warning: 'always_inline' attribute ignored [-Wattributes]
 static inline unsigned int iptcc_is_builtin(struct chain_head *c);
 ^~~~~~
In file included from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/linux-4.20-rc1/include/uapi/linux/stddef.h:2,
                 from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/linux-4.20-rc1/include/uapi/linux/posix_types.h:5,
                 from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/include/linux/types.h:8,
                 from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/include/libiptc/libip6tc.h:5,
                 from
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libip6tc.c:30:
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/linux-4.20-rc1/include/linux/compiler_types.h:199:2:
warning: redundant redeclaration of '__maybe_unused' [-Wredundant-decls]
  __maybe_unused notrace
  ^~~~~~~~~~~~~~
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libiptc.c:315:8:
note: in expansion of macro 'inline'
 static inline unsigned int iptcc_is_builtin(struct chain_head *c);
        ^~~~~~
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/linux-4.20-rc1/include/linux/compiler_types.h:199:2:
note: previous declaration of '__maybe_unused' was here
  __maybe_unused notrace
  ^~~~~~~~~~~~~~
/home/neil/projects/scratch/alternates/LibreELEC.tv/build.LibreELEC-Generic.x86_64-9.0-devel-next/iptables-1.8.1/libiptc/libiptc.c:268:8:
note: in expansion of macro 'inline'
 static inline unsigned int
        ^~~~~~

And so on. More complete log: http://ix.io/1r5f

The compiler is gcc-8.2.0, with glibc-2.28. iptables 1.8.1 is building without
a problem against kernel 4.19.1. But when switching out 4.19.1 for 4.20-rc1,
the build will fail as described above.

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