On 10/03/15 21:07, Scott Aron Bloom wrote:
> When building Qt for distribution via LGPL of a closed source product
> using shared libraries.
>
> What is the best method to make sure the plugins pickup the Qt libraries
> you are shipping?
As Thiago mentioned, you can use RPATH. However, RPATH is overridable.
What you *really* want to set is RUNPATH. If you want to load the
plugins from a directory that exists inside the directory of your
executable, then use "$ORIGIN" as the prefix.
To do that, link with:
-Wl,-rpath=\$ORIGIN/lib,--enable-new-dtags
This will look in the lib subdirectory first for libraries and only
consider default locations if a library is not found in lib. So if you
install your main binary in:
/opt/myapp/mybinary
Libraries will be searched in:
/opt/myapp/mybinary/lib
For reference, if you want to use RPATH instead of RUNPATH, use:
-Wl,-rpath=\$ORIGIN/lib,--disable-new-dtags
Note: it is somewhat of a nightmare to escape the "$" in "\$ORIGIN" in a
way that can make it undamaged to the final link command. The shell must
receive "\$ORIGIN", and until it makes it there, it can pass through
several processing stages. You might need an unholy amount of escape
sequences ("\\\\$ORIGIN" or similar.) Trial end error :-/
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