[Buildroot] [Bug 8456] New: Building host-pkgconf on Fedora 23 fails due to incorrect build dependencies

[Buildroot] [Bug 8456] New: Building host-pkgconf on Fedora 23 fails due to incorrect build dependencies

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=8456

           Summary: Building host-pkgconf on Fedora 23 fails due to
                    incorrect build dependencies
           Product: buildroot
           Version: 2015.08
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P5
         Component: Other
        AssignedTo: unassigned at buildroot.uclibc.org
        ReportedBy: ian_ormshaw at waters.com
                CC: buildroot at uclibc.org
   Estimated Hours: 0.0


When building on Fedora 23 with a previously working configuration I receive
the following error:

ls: symbol lookup error: ls: undefined symbol: cap_get_file
configure: error: working directory cannot be determined

This is caused by the by the following lines in the configure script.

   1127 ac_pwd=`pwd` && test -n "$ac_pwd" &&
   1128 ac_ls_di=`ls -di .` &&
   1129 ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
   1130   as_fn_error $? "working directory cannot be determined"
   1131 test "X$ac_ls_di" = "X$ac_pwd_ls_di" || 
   1132   as_fn_error $? "pwd does not report name of working directory"

This line calls /bin/ls as there is no host ls provided by buildroot, but ls
uses LD_LIBRARY_PATH as set by buildroot to locate the shared libraries it
requires and therefore opens:

${buildpath}/host/usr/lib/libcap.so.2

The same effect can be achieved by typing:

LD_LIBRARY_PATH=${buildpath}/host/usr/lib ls -dl .

Temperately modifying the configure script to be:

   1127 LD_LIBRARY_PATH= ac_pwd=`pwd` && test -n "$ac_pwd" &&
   1128 ac_ls_di=`ls -di .` &&
   1129 ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
   1130   as_fn_error $? "working directory cannot be determined"
   1131 test "X$ac_ls_di" = "X$ac_pwd_ls_di" || 
   1132   as_fn_error $? "pwd does not report name of working directory"

Allows the build to continue.  But the same problem is encountered in building
other host packages.

But it would appear to be a dependency issue.  I think the build order should
be that

host-coreutils and host-libcap needs to be build before any other host packages
that use ls (or any other commands used in configure scripts).

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[Buildroot] [Bug 8456] Building host-pkgconf on Fedora 23 fails due to incorrect build dependencies

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=8456

Yann E. MORIN <yann.morin.1998@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |yann.morin.1998 at free.fr
         AssignedTo|unassigned at buildroot.uclibc |yann.morin.1998 at free.fr
                   |.org                        |

--- Comment #1 from Yann E. MORIN <yann.morin.1998@free.fr> 2015-11-10 17:50:04 UTC ---
Ian, All,

Thanks for the report.

We've already had this bug reported on the list, and a patch was
submitted with the same proposal as yours, i.e. make host-libcap
a dpeendency of host-coreutils, itself a dependency of host-pkgconf.

However, we believe this is the wrong solution.

We are aiming at getting rid of LD_LIBRARY_PATH instead, since we
are supposed to have proper RPATH in all our generated host
binaries, which should make LD_LIBRARY_PATH unnecessary.

Still, there are a few of our host binaries that still do not have
a proper RPATH set, and fixing those is not a trivial task.

So, the short-term action is to collect all our host binaries
that still lack a proper RPATH, see which ones need it: a host
binary that only has dependencies on the C library and similar
host libraries, like stdc++, does not require RPATH.

We need to investgate those, fix them when needed, and finally
get rid of LD_LIBRARY_PATH altogether. Any help in this endeavour
will be greatly appreciated! ;-)

Regards,
Yann E. MORIN.

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[Buildroot] [Bug 8456] Building host-pkgconf on Fedora 23 fails due to incorrect build dependencies

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=8456

--- Comment #2 from Dr I J Ormshaw <ian_ormshaw@waters.com> 2015-11-11 10:27:46 UTC ---
Yes I agree removing LD_LIBRARY_PATH is a much better solution.  I had thought
of that as a possibility myself, but didn't suggest it because of the amount of
work involved.  As I need to get my build working again quickly I will probably
do the coreutils fix as a stop gap.  If I do do this, I will, of course, make a
patch available.

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[Buildroot] [Bug 8456] Building host-pkgconf on Fedora 23 fails due to incorrect build dependencies

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=8456

--- Comment #3 from Dr I J Ormshaw <ian_ormshaw@waters.com> 2015-11-11 15:26:57 UTC ---
Created attachment 6221
  --> https://bugs.busybox.net/attachment.cgi?id=6221
Add host coreutils and add some host build dependancies

I'm not claiming to have added all of the required dependencies. but

A) Buildroot now builds for me on Fedora 23
B) This makes things no worse
C) pkgconfig and anything dependent on it now has correct dependencies and uses
   compatible ls and libcap

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[Buildroot] [Bug 8456] Building host-pkgconf on Fedora 23 fails due to incorrect build dependencies

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=8456

--- Comment #4 from Thomas Petazzoni <thomas.petazzoni@free-electrons.com> 2015-11-12 22:44:43 UTC ---
(In reply to comment #3)
> Created attachment 6221 [details]
> Add host coreutils and add some host build dependancies
> 
> I'm not claiming to have added all of the required dependencies. but
> 
> A) Buildroot now builds for me on Fedora 23
> B) This makes things no worse
> C) pkgconfig and anything dependent on it now has correct dependencies and uses
>    compatible ls and libcap

As Yann said, we believe this is not the proper direction. Instead, removing
LD_LIBRARY_PATH should be done, so that for your system tools, we don't try to
use the Buildroot built libraries.

Can you test the patch at http://patchwork.ozlabs.org/patch/537657/ instead ?

Thanks!

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[Buildroot] [Bug 8456] Building host-pkgconf on Fedora 23 fails due to incorrect build dependencies

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=8456

--- Comment #5 from Dr I J Ormshaw <ian_ormshaw@waters.com> 2015-11-18 12:30:24 UTC ---
I've build successfully with the patch from 
http://patchwork.ozlabs.org/patch/537657/

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[Buildroot] [Bug 8456] Building host-pkgconf on Fedora 23 fails due to incorrect build dependencies

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=8456

Yann E. MORIN <yann.morin.1998@free.fr> changed:

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

--- Comment #6 from Yann E. MORIN <yann.morin.1998@free.fr> 2015-11-18 23:06:08 UTC ---
Ian, All,

Fixed by this commit:
http://git.buildroot.net/buildroot/commit/?id=34d081674ab8f0ffad84e5a18d3c67855826262f

Thanks for the report!

Regards,
Yann E. MORIN.

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