Re: [gentoo-user] Qt-creator, libQtcSsh and Botan - angst.....

[Andrew Lowe]

On 02/07/16 17:18, Matti Nykyri wrote:
>> On 07 Feb 2016, at 08:48, Andrew Lowe <agl@×××××××.au> wrote:
>>
>> Hi all,
>>    Has anyone managed to build the latest, V3.6, of Qt-creator? I'm
>> attempting to do so and am getting a problem related to libQtcSsh.so and
>> something called Botan. Reeading in more depth in the error, it appears
>> that it can't find basic_string, for example:
>>
>> *********************
>>
>> /var/tmp/portage/dev-qt/qt-creator-3.6.0/work/qt-creator-opensource-src-3.6.0/lib64/qtcreator/libQtcSsh.so:
>> undefined reference to
>> `Botan::User_Interface::User_Interface(std::__cxx11::basic_string<char,
>> std::char_traits<char>, std::allocator<char> > const&)
>
> Well this is a linker error. This means that you are linking without -lbotan flag or the installed version of libbotan.so is incompatible with qt-creator-3.6.0
>
> You can fix this by compiling qt-creator without out botan or upgrading dev-libs/botan to a version required by qt-creator.
>
> If you have the correct version of botan installed then it might be that the linker is unable to find libbotan.so
>
> Based on the error messages it is probably a version mismatch, because there is only one kind of undefined reference.
>

	I read a webpost that talked of qt-creator using it's own version of
botan hence I didn't think it would be a linking error, that it would
have the correct stuff "on board". A viewing of the ebuild shows that it
has a USE_SYSTEM_BOTAN=1 so I reinstalled botan, even though I already
had the latest version installed, and hey presto, it built.

	Thanks for the comments,
		Andrew