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Using relocatable-prog with relocatable libraries

From: Reuben Thomas
Subject: Using relocatable-prog with relocatable libraries
Date: Mon, 5 Apr 2021 22:55:42 +0100

I use relocatable-prog in a project which builds a binary that links against a library which itself is installed publicly.

Therefore, I build gnulib with -DIN_LIBRARY.

This causes gnulib to be built with a static copy of compute_curr_prefix, named local_compute_curr_prefix. Therefore, when linking, the call to compute_curr_prefix in progreloc.c's prepare_relocate function does not find a link target, and linking fails.

I read through the documentation (mostly relocatable-maint.texi), and couldn't find anything that seemed to relate to this. I can't see how I can build gnulib both with and without -DIN_LIBRARY (unless of course I build two copies of gnulib).

Have I missed something? I was surprised that I hadn't come across this problem before, but I found that I've used relocatable-lib-lgpl before, but not relocatable-prog (because in fact I was working with an LGPLed project).


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