Linking fails when version 3.9.2 is installed

[danfe]

When building version 4.0.1 while version 3.9.2 is installed, linking fails, being unable to resolve parseCmdArgumentsFromOtherInstance(const QString& message) symbol. Removing or renaming /usr/local/lib/librssguard.so helps, but the following small change to src/rssguard/rssguard.pro would make the build more robust:

-unix: LIBS += -L$$OUT_PWD/../librssguard/ -lrssguard
+unix: LIBS += $$OUT_PWD/../librssguard/librssguard.so

[martinrotter]

@danfe I checked the issue once more.

My usage of LIBS is correct. Problem is that you problem do not compile application in "fakeroot" clean environment and/ord you compile directly with OUT_PWD pointing to some "used" system location like /usr/ or something like that.

-L$$OUT_PWD/../librssguard/ -lrssguard should expand exactly to $$OUT_PWD/../librssguard/librssguard.so.

https://doc.qt.io/qt-5/qmake-variable-reference.html#libs

[danfe]

Problem is that you problem do not compile application in "fakeroot" clean environment

Well, that's right, the problem does not occur in the pristine environment, it occurs when version 3.9.2 is installed, system-wide, on the same machine one is trying to build version 4.0.1.

-L$$OUT_PWD/../librssguard/ -lrssguard should expand exactly to $$OUT_PWD/../librssguard/librssguard.so.

Right. The thing is that -L/usr/local/lib precedes -L$$OUT_PWD/../librssguard on the command line, so previously installed system-wide library would be picked up first.

[martinrotter]

-L/usr/local/lib precedes -L$$OUT_PWD on the command line, so previously installed system-wide library would be picked up first.

How exactly do your "configure/make/make install" holy trinity commands look like?

[danfe]

Our (FreeBSD's) build framework does this for me, particularly, qmake logic lives here. Full build log (I'm sorry, it's IPv6 only), with all variables' values expanded, can be found here (it's for version 3.9.2 but the linking command is the same, search for "-o rssguard main.o" and you'll see the full command line).

[martinrotter]

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