[Interest] Loading libraries from root folder

[Konrad Rosenbaum]

On Monday 09 September 2013 13:05:07 Till Oliver Knoll wrote:
> Using the rpath linker option with a /relative/ path like "./lib" (relative
> to the binary) worked for me. So I don't quite follow the disadvantage

Important note: relative rpathes are not relative to the executable, they are 
relative to the current working directory!

The correct option is: -Wl,-rpath,\$ORIGIN

or with a few more quotes for qmake:
linux {
 QMAKE_LFLAGS += -Wl,-rpath,\'\$$ORIGIN\'
}

rpath $ORIGIN forces the executable to look for any library in the same 
directory as the executable first. If you want to be a bit nicer to the 
runtime environment add -Wl,--enable-newdtags - then the $ORIGIN argument will 
end up in runpath, which is checked later (between $LD_LIBRARY_PATH and system 
pathes), but which is not-transient (i.e. libraries linked by libraries are 
not searched in $ORIGIN unless the linking library set the runpath as well).


	Konrad
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