[Clamav-devel] Problem compiling with libxml2 and Xcode 9

[Mark Allan]

Hi Steve,

Attached are the extracted lines from the config.log of the non-working version.  The one which works just gives the following output:

> configure:17809: checking for xmlTextReaderRead in -lxml2
> configure:17834: gcc -o conftest -O2 -g -D_FILE_OFFSET_BITS=64 -mmacosx-version-min=10.6  -arch x86_64 -w  -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/include/libxml2  -L/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/lib -lxml2 -lz -lpthread -licucore -lm conftest.c -lxml2 -L/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/lib -lxml2 -lz -lpthread -licucore -lm  >&5
> configure:17834: $? = 0
> configure:17843: result: yes



From a quick glance, I suspect that means there's a problem with the 10.13 SDK and I'll need to get in touch with Apple.  Can you confirm that I'm right?

Thanks
Mark

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> On 10 Oct 2017, at 4:46 pm, Steven Morgan <smorgan at sourcefire.com> wrote:
> 
> Mark,
> 
> The file config.log should contain the details of the configure test
> performed for -lxml2.
> 
> Can you tell what are the relevant differences in those files?
> 
> Thanks,
> Steve
> 
> On Tue, Oct 10, 2017 at 7:48 AM, Mark Allan <markjallan at gmail.com> wrote:
> 
>> Hi all,
>> 
>> I just updated Xcode (Apple's developer tools for macOS) to version 9 and
>> I'm no longer able to compile ClamAV 0.99.2 with libxml2 support.
>> 
>> Here's the relevant output from the configure script:
>> 
>>> ...
>>> checking for libxml2 installation... /usr
>>> checking xml2-config version... 2.9.4
>>> checking for xmlreader.h in /usr... found
>>> checking for xmlTextReaderRead in -lxml2... no
>>> configure: ****** libxml2 support unavailable
>>> ...
>>> configure: Summary of engine detection features
>>>              bzip2       : ok
>>>              zlib        : /usr
>>>              unrar       : yes
>>>              pcre        : /usr/local/clamXav
>>>              libxml2     : no
>>>              yara        : yes
>> 
>> I'm aware that things tend to break when updating Xcode, so I did this
>> test in a virtual machine, which means I can say with certainty that the
>> devtools are the only things to have changed. If I revert to the snapshot
>> with Xcode 8.3, the configure script finds everything it needs to within
>> /usr:
>> 
>>> ...
>>> checking for libxml2 installation... /usr
>>> checking xml2-config version... 2.9.4
>>> checking for xmlreader.h in /usr... found
>>> checking for xmlTextReaderRead in -lxml2... yes
>>> configure: Compiling and linking with libxml2 from /usr
>>> ...
>>> configure: Summary of engine detection features
>>>              bzip2       : ok
>>>              zlib        : /usr
>>>              unrar       : yes
>>>              pcre        : /usr/local/clamXav
>>>              libxml2     : yes, from /usr
>>>              yara        : yes
>> 
>> If I update again (or go back to the snapshot with Xcode 9) it fails.
>> 
>> I've compared the checksums of the libraries in /usr/lib/libxml2.* and
>> they're identical before and after the upgrade. Similarly, diffing the
>> contents of /usr/include/libxml2/libxml shows they're exactly the same too,
>> so I'm not quite sure what's going on.
>> 
>> Can anyone help shed some light on the matter please?
>> 
>> Many thanks
>> Mark
>> 
>> _______________________________________________
>> http://lurker.clamav.net/list/clamav-devel.html
>> Please submit your patches to our Bugzilla: http://bugs.clamav.net
>> 
>> http://www.clamav.net/contact.html#ml
>> 
> _______________________________________________
> http://lurker.clamav.net/list/clamav-devel.html
> Please submit your patches to our Bugzilla: http://bugs.clamav.net
> 
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