Debian Bug report logs - #775890
assimp: Unresolved symbols in the debian version

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Leopold Palomo-Avellaneda <leo@alaxarxa.net>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: assimp: Unresolved symbols in the debian version

Date: Wed, 21 Jan 2015 08:38:52 +0100

[Message part 1 (text/plain, inline)]

Package: assimp
Version: 3.0~dfsg-3
Severity: important

Dear Maintainer,

* What exactly did you do (or not do) that was effective (or ineffective)?

The debian version of the package shipped in sid or jessie has some symbols
dropped.

* What was the outcome of this action?

A simple program cannot be linked with the library.

* What outcome did you expect instead?

A linkeable lib.

I have attached a simple file to show the result. It could be compiled
using:

g++ assimp.cpp -o assimp-ex `pkg-config --libs assimp`

if you do it with the debian version, you obtain an error:

/tmp/ccnjCEiB.o: In function `main':
assimp.cpp:(.text+0x1c): undefined reference to `aiMaterial::aiMaterial()'
/tmp/ccnjCEiB.o: In function `aiReturn aiMaterial::AddProperty<float>(float
/const*, unsigned int, char const*, unsigned int, unsigned int)':
assimp.cpp:(.text._ZN10aiMaterial11AddPropertyIfEE8aiReturnPKT_jPKcjj[_ZN10aiMaterial11AddPropertyIfEE8aiReturnPKT_jPKcjj]+0x4d):
/undefined reference to `aiMaterial::AddBinaryProperty(void const*, unsigned
/int, char const*, unsigned int, unsigned int, aiPropertyTypeInfo)'
/tmp/ccnjCEiB.o: In function `aiReturn
/aiMaterial::AddProperty<aiColor3D>(aiColor3D const*, unsigned int, char
/const*, unsigned int, unsigned int)':
assimp.cpp:(.text._ZN10aiMaterial11AddPropertyI9aiColor3DEE8aiReturnPKT_jPKcjj[_ZN10aiMaterial11AddPropertyI9aiColor3DEE8aiReturnPKT_jPKcjj]+0x4d):
/undefined reference to `aiMaterial::AddBinaryProperty(void const*, unsigned
/int, char const*, unsigned int, unsigned int, aiPropertyTypeInfo)'
/tmp/ccnjCEiB.o: In function `aiReturn aiMaterial::AddProperty<char>(char
/const*, unsigned int, char const*, unsigned int, unsigned int)':
assimp.cpp:(.text._ZN10aiMaterial11AddPropertyIcEE8aiReturnPKT_jPKcjj[_ZN10aiMaterial11AddPropertyIcEE8aiReturnPKT_jPKcjj]+0x4d):
/undefined reference to `aiMaterial::AddBinaryProperty(void const*, unsigned
/int, char const*, unsigned int, unsigned int, aiPropertyTypeInfo)'
collect2: error: ld returned 1 exit status


However, if you download the upstream version [1], compile it (using the
same cmake options as the debian stuff) and install it in /usr/local, you
can obtain an unuseful linked program.

I guess that the file libassimp3.ver doesn't contain all the needed stuff,
for instante aiMaterial and then it's not exported. But, I'm not sure.

Please, could you look it? to me this package is unusable because I cannot
link my soft against it.


[1]
http://sourceforge.net/projects/assimp/files/assimp-3.0/assimp--3.0.1270-full.zip

-- System Information:
Debian Release: 8.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=ca_ES.UTF-8, LC_CTYPE=ca_ES.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

[assimp.cpp (text/x-c, attachment)]

Message #10 received at submit@bugs.debian.org (full text, mbox, reply):

From: "IOhannes m zmölnig (Debian/GNU)" <umlaeute@debian.org>

To: Leopold Palomo-Avellaneda <leo@alaxarxa.net>, 775890@bugs.debian.org, Debian Bug Tracking System <submit@bugs.debian.org>

Subject: Re: Bug#775890: assimp: Unresolved symbols in the debian version

Date: Fri, 23 Jan 2015 00:02:19 +0100

[Message part 1 (text/plain, inline)]

Control: tags -1 confirmed pending
thanks

On 01/21/2015 08:38 AM, Leopold Palomo-Avellaneda wrote:
> Package: assimp
> Version: 3.0~dfsg-3
> Severity: important
> 
> Dear Maintainer,
> 
> * What exactly did you do (or not do) that was effective (or ineffective)?
> 
> The debian version of the package shipped in sid or jessie has some symbols
> dropped.
> 
> * What was the outcome of this action?
> 
> A simple program cannot be linked with the library.
> 
> * What outcome did you expect instead?
> 
> A linkeable lib.

well, the library *can* be used (as long as you don't use the dropped
symbols)

[...]
> 
> I guess that the file libassimp3.ver doesn't contain all the needed stuff,
> for instante aiMaterial and then it's not exported. But, I'm not sure.

yes, thanks for the hint.
while ordinary (C-style) "ai*" symbols are exported, the C++
name-mangling prevents classes starting with "ai" to be exported
(including aiMaterial).
the fix is simple (adding another "ai*" line within the C++-scope).

so we only need to get a freeze-exception from ftp-masters.


msd
IOhannes

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Message #22 received at 775890-close@bugs.debian.org (full text, mbox, reply):

From: IOhannes m zmölnig (Debian/GNU) <umlaeute@debian.org>

To: 775890-close@bugs.debian.org

Subject: Bug#775890: fixed in assimp 3.0~dfsg-4

Date: Mon, 27 Apr 2015 21:50:10 +0000

Source: assimp
Source-Version: 3.0~dfsg-4

We believe that the bug you reported is fixed in the latest version of
assimp, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 775890@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
IOhannes m zmölnig (Debian/GNU) <umlaeute@debian.org> (supplier of updated assimp package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Format: 1.8
Date: Mon, 27 Apr 2015 22:27:30 +0200
Source: assimp
Binary: libassimp3 libassimp-dev libassimp-doc assimp-utils python-pyassimp
Architecture: source all amd64
Version: 3.0~dfsg-4
Distribution: unstable
Urgency: medium
Maintainer: IOhannes m zmölnig (Debian/GNU) <umlaeute@debian.org>
Changed-By: IOhannes m zmölnig (Debian/GNU) <umlaeute@debian.org>
Description:
 assimp-utils - 3D model import library (utilities)
 libassimp-dev - 3D model import library (development)
 libassimp-doc - 3D model import library (documentation)
 libassimp3 - 3D model import library
 python-pyassimp - 3D model import library (Python bindings)
Closes: 775890
Changes:
 assimp (3.0~dfsg-4) unstable; urgency=medium
 .
   * Export "ai*" in C++-scope (Closes: #775890)
     + Updated libassimp3.symbols file
   * Removed non-existing files from debian/copyright
   * Bumped standards to 3.9.6
Checksums-Sha1:
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 649e6be02ddf0d56966056d7dff211e59f684b76 18568 assimp_3.0~dfsg-4.debian.tar.xz
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 dffe1443b9f1edb65280ab0de903da50b5fc31e4 212562 assimp-utils_3.0~dfsg-4_amd64.deb
Checksums-Sha256:
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 643e79e7e1733bc199cc0ae503df84a73b8507b76bc12a5b350601e72339a35f 212562 assimp-utils_3.0~dfsg-4_amd64.deb
Files:
 2e88c37a9e01aa73be9d19a4abe23f85 2261 graphics extra assimp_3.0~dfsg-4.dsc
 6004ff909fa018537c0d44af85a02695 18568 graphics extra assimp_3.0~dfsg-4.debian.tar.xz
 a56456577cc22d366e9dd044134d6324 945176 doc extra libassimp-doc_3.0~dfsg-4_all.deb
 db4b2562d2c13a2a1400c5a03c4b1b70 24996 python extra python-pyassimp_3.0~dfsg-4_all.deb
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