This problem has actually existed before the 3.0.0 version. The build fails when trying to find files related to the audacious plugin even though that USE option is turned off. After disabling the jack USE option, the build completes. Reproducible: Always
Created attachment 350792 [details] Build Log
Still the mame with 3.1.0 .
This bug is now about 2 years old and still not fixed. emerge -vaD freeverb3 These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild N ] media-libs/libcue-1.4.0::gentoo USE="-static-libs" 244 KiB [ebuild N ] media-libs/bio2jack-0.9-r1::gentoo USE="-static-libs" 516 KiB [ebuild N ] media-sound/audacious-3.5.1::gentoo USE="nls -chardet" 487 KiB [ebuild N ] media-plugins/audacious-plugins-3.5.1::gentoo USE="aac alsa cdda cue ffmpeg flac fluidsynth jack lame libnotify libsamplerate midi mms mp3 nls pulseaudio sdl sndfile vorbis wavpack -adplug -bs2b -gnome -lirc -scrobbler -sid" 1.674 KiB [ebuild N ] media-libs/freeverb3-3.1.1::gentoo USE="audacious jack openmp threads -forcefpu -plugdouble" CPU_FLAGS_X86="3dnow sse sse2 sse3 -avx -sse4_1" 5.926 KiB Total: 5 packages (5 new), Size of downloads: 8.845 KiB Would you like to merge these packages? [Yes/No] n Quitting. USE="jack -audacious" emerge -vaD freeverb3 These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild N ] media-libs/freeverb3-3.1.1::gentoo USE="jack openmp threads -audacious -forcefpu -plugdouble" CPU_FLAGS_X86="3dnow sse sse2 sse3 -avx -sse4_1" 5.926 KiB Total: 1 package (1 new), Size of downloads: 5.926 KiB ../audacious/so.c:23:30: fatal error: audacious/plugin.h: No such file or directory compilation terminated.
I cannot reproduce the issue with 3.1.1-r1 any more. Please re-open if it still applies to 3.1.1-r1 with you. Thanks!