GPSBabel 1.7.0 launched July 5, 2020 https://www.gpsbabel.org/news/gpsbabel-1.7.0.html Reproducible: Always
1.7.0 also builds with gcc-11. (While current stable 1.5.4-r1 fails with gcc-11.)
Been in tree since https://gitweb.gentoo.org/repo/gentoo.git/commit/sci-geosciences/gpsbabel?id=637f5c37176bb8ab803447ff947d6c609006de00. (In reply to Markus from comment #1) > 1.7.0 also builds with gcc-11. (While current stable 1.5.4-r1 fails with > gcc-11.) Filed bug 820080 (and fixed some dependencies for it too).