[Buildroot] [Bug 7286] New: systemd 215 doesn't build

[Buildroot] [Bug 7286] New: systemd 215 doesn't build

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=7286

           Summary: systemd 215 doesn't build
           Product: buildroot
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: minor
          Priority: P5
         Component: Other
        AssignedTo: unassigned at buildroot.uclibc.org
        ReportedBy: philn at igalia.com
                CC: buildroot at uclibc.org
   Estimated Hours: 0.0


Created attachment 5540
  --> https://bugs.busybox.net/attachment.cgi?id=5540
build log

I'm trying to build Systemd for a Raspberry Pi. Attaching the build log. Please
let me know if you need more infos about my buildroot config.

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[Buildroot] [Bug 7286] systemd 215 doesn't build

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=7286

--- Comment #1 from philn at igalia.com 2014-07-31 08:14:04 UTC ---
Tried a recent git snapshot too (2b49732c3d511007ae2c413997e56c40f678d79a) and
had the same error.

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[Buildroot] [Bug 7286] systemd 215 doesn't build

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=7286

--- Comment #2 from philn at igalia.com 2014-07-31 08:20:41 UTC ---
Created attachment 5546
  --> https://bugs.busybox.net/attachment.cgi?id=5546
buildroot config

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[Buildroot] [Bug 7286] systemd 215 doesn't build

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=7286

--- Comment #3 from nroach44 at gmail.com 2014-07-31 10:37:55 UTC ---
Testing using the defconfig: Setting glibc and systemd and then -O{1,2,3} (not
-O{s,1}), I get build errors very similar (probably the same but jumbled due to
multithreading).

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[Buildroot] [Bug 7286] systemd 215 doesn't build

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=7286

--- Comment #4 from nroach44 at gmail.com 2014-07-31 10:39:03 UTC ---
Testing using the defconfig: Setting glibc and systemd and then -O{1,2,3} (not
-O{s,1}), I get build errors very similar (probably the same but jumbled due to
multithreading).(In reply to comment #3)
> Testing using the defconfig: Setting glibc and systemd and then -O{1,2,3} (not
> -O{s,1}), I get build errors very similar (probably the same but jumbled due to
> multithreading).

that should be "not -O{s,0}"

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[Buildroot] [Bug 7286] systemd 215 doesn't build

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=7286

--- Comment #5 from Eric Le Bihan <eric.le.bihan.dev@free.fr> 2014-07-31 17:38:29 UTC ---
The build fails because systemd is configured with the --enable-compat-libs
option.
This option has been added because since systemd 209, some libraries have been
merged into libsystemd.so:

 - libsystemd-daemon.so
 - libsystemd-id128.so
 - libsystemd-journal.so
 - libsystemd-login.so

When this option is enabled, the deprecated libraries will be built, so
external programs, which depend on them and have not yet migrated to
libsystemd, can still compile. But these libs will refer to the parts used to
build libsystemd.

For example, if we look at libsystemd-journal.so, we can see that is built from
libsystemd-journal.c. This file is generated from:

- src/compat-libs/linkwarning.h
- src/compat-libs/libsystemd-journal.sym

Via some macros in linkwarning.h the symbols will be compiled as an unallocated
section and linking to them will cause a warning to be printed.

From the build log, we can see that GCC complains the symbol is being defined
twice:

{{
/tmp/ccEK7EwW.ltrans13.ltrans.o: In function `sd_journal_reliable_fd':
ccEK7EwW.ltrans13.o:(.text+0x784): multiple definition of
`sd_journal_reliable_fd'
libsystemd_journal_internal_la-sd-journal.o (symbol from plugin):(.text+0x0):
first defined here
}}

In the attached Buildroot config file, we have "BR2_OPTIMIZE_2=y", which adds
"-Wp,-D_FORTIFY_SOURCE=2" to CPPFLAGS and "-flto -ffat-lto-objects" to CFLAGS.

I tried the attached configuration with ccache disabled and "BR2_OPTIMIZE_S=y",
which cause the aforementioned options to be dropped, and the build is
successful.

In the configure script, there is a check for these options, but it seems to
only print a warning message...

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[Buildroot] [Bug 7286] systemd 215 doesn't build

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=7286

--- Comment #6 from philn at igalia.com 2014-08-04 07:01:44 UTC ---
So what would be the approach to fix this issue then? Ensuring the CPPFLAGS and
CFLAGS don't contain these options when building systemd?

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[Buildroot] [Bug 7286] systemd 215 doesn't build

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=7286

--- Comment #7 from Eric Le Bihan <eric.le.bihan.dev@free.fr> 2014-08-04 08:25:22 UTC ---
Created attachment 5552
  --> https://bugs.busybox.net/attachment.cgi?id=5552
Workaround by disabling link time optimization

Here is a workaround which disable link time optimization for systemd.

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[Buildroot] [Bug 7286] systemd 215 doesn't build

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=7286

--- Comment #8 from Thomas De Schampheleire <patrickdepinguin@gmail.com> 2014-08-09 15:19:01 UTC ---
Eric, is this the fix we should apply for 2014.08 or should something else be
done? In the first case, could you send the patch to the list? In the second
case, could you give more details about what you think should be done?

Thanks, Thomas

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[Buildroot] [Bug 7286] systemd 215 doesn't build

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=7286

--- Comment #9 from Eric Le Bihan <eric.le.bihan.dev@free.fr> 2014-08-12 20:41:51 UTC ---
The bug was reported upstream
(https://bugs.freedesktop.org/show_bug.cgi?id=78923) but has been marked as
rejected, as it is likely to be a compiler/linker issue (though the last
comment says the issue is not raised when using GCC 4.8.3, which is the version
precisely used in our case!). 

Comments in another bug report
(https://bugzilla.redhat.com/show_bug.cgi?id=1067245#c13) suggest testing with
GCC 4.9.

Anyway, the patch is now in patchwork:
http://patchwork.ozlabs.org/patch/379472/. I suggest applying it.

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[Buildroot] [Bug 7286] systemd 215 doesn't build

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=7286

Thomas Petazzoni <thomas.petazzoni@free-electrons.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #10 from Thomas Petazzoni <thomas.petazzoni@free-electrons.com> 2014-08-15 20:32:21 UTC ---
Fixed by
http://git.buildroot.net/buildroot/commit/?id=d9054017cfc25c8f89225e1d18c71f112d25f9a0.
Closing bug. Thanks!

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