Created attachment 669443 [details] portage build log Attached in the build log from portage. Digging in to the makefile in c++/xycontroller/Makefile, the issue may be the relative path used on line 48. I can play around with this a bit, but wanted to post this bug to see if anyone else is having this issue.
I tried re-emerging and this time it went fine. I think perhaps the initial error was due to trying to emerge cadence while some other jack-related emerges were going on, though it doesn't entirely make sense to me...
Created attachment 765636 [details] Build log from a failed build I am also having this issue. The problem goes away permanently when MAKEOPTS=-j1 is used, but it crops up again when larger -j values are used.
Created attachment 786404 [details] build.log (media-sound/cadence-0.9.2) Still a problem with media-sound/cadence-0.9.2.
my command for compilation is pretty the same and cadence compiles fine for me, but i have -march=native and an intel amd64 cpu: c++ -c xycontroller.cpp -O3 -ffast-math -Wall -Wextra -DNDEBUG -fPIC -std=c++0x -march=native -O2 -pipe -frecord-gcc-switches -DQT_NO_DEBUG -DQT_NO_DEBUG_STREAM -DQT_NO_DEBUG_OUTPUT -I../widgets -I/usr/include/qt5/QtCore -I/usr/include/qt5 -I/usr/include/qt5/QtGui -DQT_WIDGETS_LIB -I/usr/include/qt5/QtWidgets -DQT_GUI_LIB -DQT_CORE_LIB -o xycontroller.o the file that cannot be found is part of the cadence sources: /var/tmp/portage/media-sound/cadence-0.9.2/work/Cadence-0.9.2/c++/xycontroller/ui_xycontroller.h
*** Bug 880163 has been marked as a duplicate of this bug. ***
(In reply to Miroslav Šulc from comment #4) > my command for compilation is pretty the same and cadence compiles fine for > me, but i have -march=native and an intel amd64 cpu: right, it's a race condition, you might be able to hit it with make --shuffle, or a user might, then can try make --shuffle=SEED to reproduce
