[Interest] Best practice to packages on Ubuntu with QtIF

[Igor Mironchik]

Hi,


On 22.02.2016 11:51, Nikos Chantziaras wrote:
> That will not work. The rpath needs to be $ORIGIN. A string. Not a 
> variable that is expanded.
>
> Also, I used the wrong syntax before. Escaping this string is 
> difficult since it contains an "$". This should work:
>
>   QMAKE_LFLAGS=-Wl,-rpath,\'\$\$ORIGIN\'
>
> If you use that one, you should find that your program keeps working 
> even if you move the directory that contains it and the libraries to 
> somewhere else. With your current method, the program will only work 
> if the libraries are in "/home/igor/Qt/5.5/gcc_64", a hardcoded path.

Now I understand what are you talking about. You are right.

I found the next solution in QtCreator sources:

QMAKE_RPATHDIR += \$\$ORIGIN
QMAKE_RPATHDIR += \$\$ORIGIN/../lib
RPATH = $$join( QMAKE_RPATHDIR, ":" )

QMAKE_LFLAGS += -Wl,-z,origin \'-Wl,-rpath,$${RPATH}\'
QMAKE_RPATHDIR =

It works now.

Thank you.

>
>
> On 22/02/16 10:31, Igor Mironchik wrote:
>> In my Makefile I have:
>>
>> LFLAGS        = -Wl,-O1 -Wl,-rpath,/home/igor/Qt/5.5/gcc_64
>> -Wl,-rpath,${ORIGIN} -Wl,-rpath,/home/igor/Qt/5.5/gcc_64/lib
>>
>>
>> On 22.02.2016 10:26, Nikos Chantziaras wrote:
>>> That doesn't do anything useful. It just uses an absolute path. If you
>>> move the executable to a different directory, it stops working.
>>>
>>> You can verify that by looking at the Makefile. For example, here, 
>>> this:
>>>
>>>   QMAKE_RPATHDIR += ${ORIGIN}
>>>
>>> becomes:
>>>
>>>   -Wl,-rpath,/home/realnc/projects/myapp/
>>>
>>> Which is completely useless.
>>>
>>> Do do what you want, you really need to pass the string "$ORIGIN" to
>>> the linker:
>>>
>>>   QMAKE_LFLAGS += -Wl,-rpath,\$\$ORIGIN
>>>
>>> This results in:
>>>
>>>   -Wl,-rpath,$ORIGIN
>>>
>>> in the Makefile.
>>>
>>>
>>> On 22/02/16 09:13, Igor Mironchik wrote:
>>>> Hi,
>>>>
>>>> Got it:
>>>>
>>>> QMAKE_RPATHDIR += ${ORIGIN}
>>>>
>>>> On 22.02.2016 10:11, Nikos Chantziaras wrote:
>>>>> On 22/02/16 08:55, Igor Mironchik wrote:
>>>>>> On 22.02.2016 09:22, Koehne Kai wrote:
>>>>>>>
>>>>>>> You should rather utilize rpath, and set it e.g. to $ORIGIN
>>>>>>>
>>>>>>> https://en.wikipedia.org/wiki/Rpath
>>>>>>
>>>>>> Interesting, but "QMAKE_RPATHDIR += ." doesn't work. It require full
>>>>>> path to work correctly...
>>>>>
>>>>> qmake doesn't support it. You have to do it by hand:
>>>>>
>>>>>   QMAKE_LFLAGS += -Wl,-rpath,\$\$ORIGIN/libs
>>>>>
>>>>> And then I put all libraries in the "lib" directory of the
>>>>> execututable.
>>>>>
>>>>> (And this is obviously linker and platform specific.)
>>>>>
>>>>> _______________________________________________
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>>>>
>>>
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>
>
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