gollvm: use of undefined type 'epollevent' , reference to undefined name '_SEGV_ACCERR' if compiled using Clang 9

[advancedwebdeveloper]

Hello again.

Not that I saw any sense to support a discontinued version of Clang - but it was simply included, among other compilers/versions, because it is the "default" compiler ob Ubuntu VMs (Github Actions).

Here is what I saw:

tools/gollvm/libgo/runtime.o
cd /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/tools/gollvm/libgo && /usr/local/bin/cmake -E make_directory ./. && /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc -c -o /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/tools/gollvm/libgo/./runtime.o -fgo-pkgpath=runtime -fgo-c-header=runtime.inc.raw -fgo-compiling-runtime -I . gollvm/gofrontend/libgo/go/runtime/alg.go gollvm/gofrontend/libgo/go/runtime/atomic_pointer.go gollvm/gofrontend/libgo/go/runtime/cgo_gccgo.go gollvm/gofrontend/libgo/go/runtime/cgocall.go gollvm/gofrontend/libgo/go/runtime/cgocheck.go gollvm/gofrontend/libgo/go/runtime/chan.go gollvm/gofrontend/libgo/go/runtime/compiler.go gollvm/gofrontend/libgo/go/runtime/cpuprof.go gollvm/gofrontend/libgo/go/runtime/cputicks.go gollvm/gofrontend/libgo/go/runtime/debug.go gollvm/gofrontend/libgo/go/runtime/debuglog.go gollvm/gofrontend/libgo/go/runtime/debuglog_off.go gollvm/gofrontend/libgo/go/runtime/env_posix.go gollvm/gofrontend/libgo/go/runtime/eqtype.go gollvm/gofrontend/libgo/go/runtime/error.go gollvm/gofrontend/libgo/go/runtime/extern.go gollvm/gofrontend/libgo/go/runtime/fastlog2.go gollvm/gofrontend/libgo/go/runtime/fastlog2table.go gollvm/gofrontend/libgo/go/runtime/ffi.go gollvm/gofrontend/libgo/go/runtime/float.go gollvm/gofrontend/libgo/go/runtime/hash64.go gollvm/gofrontend/libgo/go/runtime/heapdump.go gollvm/gofrontend/libgo/go/runtime/iface.go gollvm/gofrontend/libgo/go/runtime/lfstack.go gollvm/gofrontend/libgo/go/runtime/lfstack_64bit.go gollvm/gofrontend/libgo/go/runtime/lock_futex.go gollvm/gofrontend/libgo/go/runtime/lockrank.go gollvm/gofrontend/libgo/go/runtime/lockrank_off.go gollvm/gofrontend/libgo/go/runtime/malloc.go gollvm/gofrontend/libgo/go/runtime/map.go gollvm/gofrontend/libgo/go/runtime/map_fast32.go gollvm/gofrontend/libgo/go/runtime/map_fast64.go gollvm/gofrontend/libgo/go/runtime/map_faststr.go gollvm/gofrontend/libgo/go/runtime/mbarrier.go gollvm/gofrontend/libgo/go/runtime/mbitmap.go gollvm/gofrontend/libgo/go/runtime/mcache.go gollvm/gofrontend/libgo/go/runtime/mcentral.go gollvm/gofrontend/libgo/go/runtime/mem_gccgo.go gollvm/gofrontend/libgo/go/runtime/mfinal.go gollvm/gofrontend/libgo/go/runtime/mfixalloc.go gollvm/gofrontend/libgo/go/runtime/mgc.go gollvm/gofrontend/libgo/go/runtime/mgc_gccgo.go gollvm/gofrontend/libgo/go/runtime/mgcmark.go gollvm/gofrontend/libgo/go/runtime/mgcscavenge.go gollvm/gofrontend/libgo/go/runtime/mgcsweep.go gollvm/gofrontend/libgo/go/runtime/mgcsweepbuf.go gollvm/gofrontend/libgo/go/runtime/mgcwork.go gollvm/gofrontend/libgo/go/runtime/mheap.go gollvm/gofrontend/libgo/go/runtime/mpagealloc.go gollvm/gofrontend/libgo/go/runtime/mpagealloc_64bit.go gollvm/gofrontend/libgo/go/runtime/mpagecache.go gollvm/gofrontend/libgo/go/runtime/mpallocbits.go gollvm/gofrontend/libgo/go/runtime/mprof.go gollvm/gofrontend/libgo/go/runtime/mranges.go gollvm/gofrontend/libgo/go/runtime/msan0.go gollvm/gofrontend/libgo/go/runtime/msize.go gollvm/gofrontend/libgo/go/runtime/mspanset.go gollvm/gofrontend/libgo/go/runtime/mstats.go gollvm/gofrontend/libgo/go/runtime/mwbbuf.go gollvm/gofrontend/libgo/go/runtime/nbpipe_pipe2.go gollvm/gofrontend/libgo/go/runtime/netpoll.go gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go gollvm/gofrontend/libgo/go/runtime/os_gccgo.go gollvm/gofrontend/libgo/go/runtime/os_linux.go gollvm/gofrontend/libgo/go/runtime/os_linux_noauxv.go gollvm/gofrontend/libgo/go/runtime/panic.go gollvm/gofrontend/libgo/go/runtime/panic32.go gollvm/gofrontend/libgo/go/runtime/preempt.go gollvm/gofrontend/libgo/go/runtime/preempt_nonwindows.go gollvm/gofrontend/libgo/go/runtime/print.go gollvm/gofrontend/libgo/go/runtime/proc.go gollvm/gofrontend/libgo/go/runtime/profbuf.go gollvm/gofrontend/libgo/go/runtime/proflabel.go gollvm/gofrontend/libgo/go/runtime/race0.go gollvm/gofrontend/libgo/go/runtime/rdebug.go gollvm/gofrontend/libgo/go/runtime/relax_stub.go gollvm/gofrontend/libgo/go/runtime/runtime.go gollvm/gofrontend/libgo/go/runtime/runtime1.go gollvm/gofrontend/libgo/go/runtime/runtime2.go gollvm/gofrontend/libgo/go/runtime/rwmutex.go gollvm/gofrontend/libgo/go/runtime/select.go gollvm/gofrontend/libgo/go/runtime/sema.go gollvm/gofrontend/libgo/go/runtime/signal_gccgo.go gollvm/gofrontend/libgo/go/runtime/signal_unix.go gollvm/gofrontend/libgo/go/runtime/sigqueue.go gollvm/gofrontend/libgo/go/runtime/sigqueue_note.go gollvm/gofrontend/libgo/go/runtime/sizeclasses.go gollvm/gofrontend/libgo/go/runtime/slice.go gollvm/gofrontend/libgo/go/runtime/string.go gollvm/gofrontend/libgo/go/runtime/stubs.go gollvm/gofrontend/libgo/go/runtime/stubs2.go gollvm/gofrontend/libgo/go/runtime/stubs3.go gollvm/gofrontend/libgo/go/runtime/stubs_linux.go gollvm/gofrontend/libgo/go/runtime/symtab.go gollvm/gofrontend/libgo/go/runtime/time.go gollvm/gofrontend/libgo/go/runtime/time_nofake.go gollvm/gofrontend/libgo/go/runtime/timestub.go gollvm/gofrontend/libgo/go/runtime/timestub2.go gollvm/gofrontend/libgo/go/runtime/trace.go gollvm/gofrontend/libgo/go/runtime/traceback_gccgo.go gollvm/gofrontend/libgo/go/runtime/type.go gollvm/gofrontend/libgo/go/runtime/typekind.go gollvm/gofrontend/libgo/go/runtime/utf8.go gollvm/gofrontend/libgo/go/runtime/write_err.go /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/tools/gollvm/libgo/runtime_linknames.go /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/tools/gollvm/libgo/runtime_sysinfo.go /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/tools/gollvm/libgo/sigtab.go

I am stripping down some recurrent prefixes, in the directory path:

/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:22:39: error: use of undefined type 'epollevent'
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:52:3: error: reference to undefined name 'events'

/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:52:11: error: reference to undefined name '_EPOLLIN'
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:22:39: error: use of undefined type 'epollevent'
Probably due to the previous error:
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:72:4: error: reference to field 'events' in object which has no fields or methods

/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:72:14: error: reference to undefined name '_EPOLLIN'
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:72:25: error: reference to undefined name '_EPOLLOUT'
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:73:34: error: reference to field 'data' in object which has no fields or methods
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:22:39: error: use of undefined type 'epollevent'
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:155:8: error: reference to field 'events' in object which has no fields or methods
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:159:37: error: reference to field 'data' in object which has no fields or methods
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:160:9: error: reference to field 'events' in object which has no fields or methods

/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:160:20: error: reference to undefined name '_EPOLLIN'
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:161:55: error: reference to field 'events' in object which has no fields or methods
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:176:8: error: reference to field 'events' in object which has no fields or methods
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:176:17: error: reference to undefined name '_EPOLLIN'

/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:176:38: error: reference to undefined name '_EPOLLHUP'
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:176:48: error: reference to undefined name '_EPOLLERR'

/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:179:8: error: reference to field 'events' in object which has no fields or methods
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:179:17: error: reference to undefined name '_EPOLLOUT'
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:179:27: error: reference to undefined name '_EPOLLHUP'
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:179:37: error: reference to undefined name '_EPOLLERR'
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:183:42: error: reference to field 'data' in object which has no fields or methods
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:185:9: error: reference to field 'events' in object which has no fields or methods

/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:185:20: error: reference to undefined name '_EPOLLERR'

/gollvm/gofrontend/libgo/go/runtime/signal_unix.go:316:13: error: reference to undefined name '_ITIMER_PROF'
/gollvm/gofrontend/libgo/go/runtime/signal_unix.go:321:13: error: reference to undefined name '_ITIMER_PROF'
/gollvm/gofrontend/libgo/go/runtime/signal_unix.go:498:20: error: reference to undefined name '_SI_USER'
/gollvm/gofrontend/libgo/go/runtime/signal_unix.go:508:20: error: reference to undefined name '_SI_USER'
/gollvm/gofrontend/libgo/go/runtime/signal_unix.go:528:20: error: reference to undefined name '_SI_USER'
/gollvm/gofrontend/libgo/go/runtime/signal_unix.go:534:20: error: reference to undefined name '_SI_USER'
/gollvm/gofrontend/libgo/go/runtime/signal_unix.go:654:20: error: reference to undefined name '_BUS_ADRERR'
/gollvm/gofrontend/libgo/go/runtime/signal_unix.go:664:40: error: reference to undefined name '_SEGV_MAPERR'
/gollvm/gofrontend/libgo/go/runtime/signal_unix.go:664:70: error: reference to undefined name '_SEGV_ACCERR'
/gollvm/gofrontend/libgo/go/runtime/signal_unix.go:675:8: error: reference to undefined name '_FPE_INTDIV'
/gollvm/gofrontend/libgo/go/runtime/signal_unix.go:677:8: error: reference to undefined name '_FPE_INTOVF'
/gollvm/gofrontend/libgo/go/runtime/signal_unix.go:762:92: error: reference to undefined name '_SI_USER'
/gollvm/gofrontend/libgo/go/runtime/signal_unix.go:939:21: error: reference to undefined name '_SI_USER'
/gollvm/gofrontend/libgo/go/runtime/signal_unix.go:1029:17: error: reference to undefined name '_SS_DISABLE'
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:22:39: error: use of undefined type 'epollevent'
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:22:39: error: use of undefined type 'epollevent'
/gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:22:39: error: use of undefined type 'epollevent'

[1590/2668] Building Go package 'runtime' (PIC)
FAILED: tools/gollvm/libgo/.pic/runtime.o
/gollvm/libgo && /usr/local/bin/cmake -E make_directory ././.pic && llvm-goc -c -o gollvm/libgo/./.pic/runtime.o -fPIC -fgo-pkgpath=runtime -fgo-c-header=runtime.inc.raw -fgo-compiling-runtime -I . gollvm/gofrontend/libgo/go/runtime/alg.go /gollvm/gofrontend/libgo/go/runtime/atomic_pointer.go gollvm/gofrontend/libgo/go/runtime/cgo_gccgo.go gollvm/gofrontend/libgo/go/runtime/cgocall.go gollvm/gofrontend/libgo/go/runtime/cgocheck.go gollvm/gofrontend/libgo/go/runtime/chan.go gollvm/gofrontend/libgo/go/runtime/cpuprof.go gollvm/gofrontend/libgo/go/runtime/cputicks.go /gollvm/gofrontend/libgo/go/runtime/debug.go /gollvm/gofrontend/libgo/go/runtime/debuglog.go gollvm/gofrontend/libgo/go/runtime/debuglog_off.go gollvm/gofrontend/libgo/go/runtime/env_posix.go gollvm/gofrontend/libgo/go/runtime/eqtype.go gollvm/gofrontend/libgo/go/runtime/error.go gollvm/gofrontend/libgo/go/runtime/extern.go gollvm/gofrontend/libgo/go/runtime/fastlog2.go gollvm/gofrontend/libgo/go/runtime/fastlog2table.go gollvm/gofrontend/libgo/go/runtime/ffi.go gollvm/gofrontend/libgo/go/runtime/float.go gollvm/gofrontend/libgo/go/runtime/hash64.go gollvm/gofrontend/libgo/go/runtime/heapdump.go gollvm/gofrontend/libgo/go/runtime/iface.go gollvm/gofrontend/libgo/go/runtime/lfstack.go /gollvm/gofrontend/libgo/go/runtime/lfstack_64bit.go gollvm/gofrontend/libgo/go/runtime/lock_futex.go gollvm/gofrontend/libgo/go/runtime/lockrank.go gollvm/gofrontend/libgo/go/runtime/lockrank_off.go gollvm/gofrontend/libgo/go/runtime/malloc.go gollvm/gofrontend/libgo/go/runtime/map.go gollvm/gofrontend/libgo/go/runtime/map_fast32.go gollvm/gofrontend/libgo/go/runtime/map_fast64.go gollvm/gofrontend/libgo/go/runtime/map_faststr.go gollvm/gofrontend/libgo/go/runtime/mbarrier.go gollvm/gofrontend/libgo/go/runtime/mbitmap.go gollvm/gofrontend/libgo/go/runtime/mcache.go gollvm/gofrontend/libgo/go/runtime/mcentral.go gollvm/gofrontend/libgo/go/runtime/mem_gccgo.go gollvm/gofrontend/libgo/go/runtime/mfinal.go gollvm/gofrontend/libgo/go/runtime/mfixalloc.go gollvm/gofrontend/libgo/go/runtime/mgc.go gollvm/gofrontend/libgo/go/runtime/mgc_gccgo.go gollvm/gofrontend/libgo/go/runtime/mgcmark.go gollvm/gofrontend/libgo/go/runtime/mgcscavenge.go gollvm/gofrontend/libgo/go/runtime/mgcsweep.go gollvm/gofrontend/libgo/go/runtime/mgcsweepbuf.go gollvm/gofrontend/libgo/go/runtime/mgcwork.go gollvm/gofrontend/libgo/go/runtime/mheap.go gollvm/gofrontend/libgo/go/runtime/mpagealloc.go gollvm/gofrontend/libgo/go/runtime/mpagealloc_64bit.go gollvm/gofrontend/libgo/go/runtime/mpagecache.go gollvm/gofrontend/libgo/go/runtime/mpallocbits.go gollvm/gofrontend/libgo/go/runtime/mprof.go gollvm/gofrontend/libgo/go/runtime/mranges.go gollvm/gofrontend/libgo/go/runtime/msan0.go gollvm/gofrontend/libgo/go/runtime/msize.go gollvm/gofrontend/libgo/go/runtime/mspanset.go gollvm/gofrontend/libgo/go/runtime/mstats.go gollvm/gofrontend/libgo/go/runtime/mwbbuf.go gollvm/gofrontend/libgo/go/runtime/nbpipe_pipe2.go gollvm/gofrontend/libgo/go/runtime/netpoll.go gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go gollvm/gofrontend/libgo/go/runtime/os_gccgo.go gollvm/gofrontend/libgo/go/runtime/os_linux.go gollvm/gofrontend/libgo/go/runtime/os_linux_noauxv.go gollvm/gofrontend/libgo/go/runtime/panic.go gollvm/gofrontend/libgo/go/runtime/panic32.go gollvm/gofrontend/libgo/go/runtime/preempt.go gollvm/gofrontend/libgo/go/runtime/preempt_nonwindows.go gollvm/gofrontend/libgo/go/runtime/print.go gollvm/gofrontend/libgo/go/runtime/proc.go gollvm/gofrontend/libgo/go/runtime/profbuf.go gollvm/gofrontend/libgo/go/runtime/proflabel.go gollvm/gofrontend/libgo/go/runtime/race0.go gollvm/gofrontend/libgo/go/runtime/rdebug.go gollvm/gofrontend/libgo/go/runtime/relax_stub.go gollvm/gofrontend/libgo/go/runtime/runtime.go gollvm/gofrontend/libgo/go/runtime/runtime1.go gollvm/gofrontend/libgo/go/runtime/runtime2.go gollvm/gofrontend/libgo/go/runtime/rwmutex.go gollvm/gofrontend/libgo/go/runtime/select.go gollvm/gofrontend/libgo/go/runtime/sema.go gollvm/gofrontend/libgo/go/runtime/signal_gccgo.go gollvm/gofrontend/libgo/go/runtime/signal_unix.go gollvm/gofrontend/libgo/go/runtime/sigqueue.go gollvm/gofrontend/libgo/go/runtime/sigqueue_note.go gollvm/gofrontend/libgo/go/runtime/sizeclasses.go gollvm/gofrontend/libgo/go/runtime/slice.go gollvm/gofrontend/libgo/go/runtime/string.go gollvm/gofrontend/libgo/go/runtime/stubs.go gollvm/gofrontend/libgo/go/runtime/stubs2.go gollvm/gofrontend/libgo/go/runtime/stubs3.go gollvm/gofrontend/libgo/go/runtime/stubs_linux.go gollvm/gofrontend/libgo/go/runtime/symtab.go gollvm/gofrontend/libgo/go/runtime/time.go gollvm/gofrontend/libgo/go/runtime/time_nofake.go gollvm/gofrontend/libgo/go/runtime/timestub.go gollvm/gofrontend/libgo/go/runtime/timestub2.go gollvm/gofrontend/libgo/go/runtime/trace.go gollvm/gofrontend/libgo/go/runtime/traceback_gccgo.go gollvm/gofrontend/libgo/go/runtime/type.go gollvm/gofrontend/libgo/go/runtime/typekind.go gollvm/gofrontend/libgo/go/runtime/utf8.go gollvm/gofrontend/libgo/go/runtime/write_err.go /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/tools/gollvm/libgo/runtime_linknames.go /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/tools/gollvm/libgo/runtime_sysinfo.go /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/tools/gollvm/libgo/sigtab.go

gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:22:39: error: use of undefined type 'epollevent'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:52:3: error: reference to undefined name 'events'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:52:11: error: reference to undefined name '_EPOLLIN'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:22:39: error: use of undefined type 'epollevent'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:72:4: error: reference to field 'events' in object which has no fields or methods
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:72:14: error: reference to undefined name '_EPOLLIN'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:72:25: error: reference to undefined name '_EPOLLOUT'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:73:34: error: reference to field 'data' in object which has no fields or methods
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:22:39: error: use of undefined type 'epollevent'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:155:8: error: reference to field 'events' in object which has no fields or methods
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:159:37: error: reference to field 'data' in object which has no fields or methods
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:160:9: error: reference to field 'events' in object which has no fields or methods
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:160:20: error: reference to undefined name '_EPOLLIN'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:161:55: error: reference to field 'events' in object which has no fields or methods
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:176:8: error: reference to field 'events' in object which has no fields or methods
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:176:17: error: reference to undefined name '_EPOLLIN'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:176:38: error: reference to undefined name '_EPOLLHUP'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:176:48: error: reference to undefined name '_EPOLLERR'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:179:8: error: reference to field 'events' in object which has no fields or methods
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:179:17: error: reference to undefined name '_EPOLLOUT'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:179:27: error: reference to undefined name '_EPOLLHUP'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:179:37: error: reference to undefined name '_EPOLLERR'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:183:42: error: reference to field 'data' in object which has no fields or methods
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:185:9: error: reference to field 'events' in object which has no fields or methods
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:185:20: error: reference to undefined name '_EPOLLERR'
gollvm/gofrontend/libgo/go/runtime/signal_unix.go:316:13: error: reference to undefined name '_ITIMER_PROF'
gollvm/gofrontend/libgo/go/runtime/signal_unix.go:321:13: error: reference to undefined name '_ITIMER_PROF'
gollvm/gofrontend/libgo/go/runtime/signal_unix.go:498:20: error: reference to undefined name '_SI_USER'
gollvm/gofrontend/libgo/go/runtime/signal_unix.go:508:20: error: reference to undefined name '_SI_USER'
gollvm/gofrontend/libgo/go/runtime/signal_unix.go:528:20: error: reference to undefined name '_SI_USER'
gollvm/gofrontend/libgo/go/runtime/signal_unix.go:534:20: error: reference to undefined name '_SI_USER'
gollvm/gofrontend/libgo/go/runtime/signal_unix.go:654:20: error: reference to undefined name '_BUS_ADRERR'
gollvm/gofrontend/libgo/go/runtime/signal_unix.go:664:40: error: reference to undefined name '_SEGV_MAPERR'
gollvm/gofrontend/libgo/go/runtime/signal_unix.go:664:70: error: reference to undefined name '_SEGV_ACCERR'
gollvm/gofrontend/libgo/go/runtime/signal_unix.go:675:8: error: reference to undefined name '_FPE_INTDIV'
gollvm/gofrontend/libgo/go/runtime/signal_unix.go:677:8: error: reference to undefined name '_FPE_INTOVF'
gollvm/gofrontend/libgo/go/runtime/signal_unix.go:762:92: error: reference to undefined name '_SI_USER'
gollvm/gofrontend/libgo/go/runtime/signal_unix.go:939:21: error: reference to undefined name '_SI_USER'
gollvm/gofrontend/libgo/go/runtime/signal_unix.go:1029:17: error: reference to undefined name '_SS_DISABLE'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:22:39: error: use of undefined type 'epollevent'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:22:39: error: use of undefined type 'epollevent'
gollvm/gofrontend/libgo/go/runtime/netpoll_epoll.go:22:39: error: use of undefined type 'epollevent'

[1591/2668] Creating gollvm/libgo/tmp-sysinfo.go

And then Ninja stops the build - so not sure whether tmp-sysinfo.go is generated. But that could be checked/reproduced, for sure.

https://github.com/advancedwebdeveloper/clang_test_cpu_features/actions/runs/371676906 - that's my workflow.
https://github.com/advancedwebdeveloper/clang_test_cpu_features/runs/1422446316?check_suite_focus=true - that's a failing build, described above;
https://github.com/advancedwebdeveloper/clang_test_cpu_features/runs/1422446338?check_suite_focus=true - a GCC oriented, to support compiler's diversity;
https://github.com/advancedwebdeveloper/clang_test_cpu_features/runs/1422446292?check_suite_focus=true - that's a Clang 10 oriented build, which doesn't have any tracked errors
.

[advancedwebdeveloper]

If that is completely cause of compiler version compatibility - I would propose to vote for elevating minimal required version of Clang, so it would be reflected in the README.
If that is not only (or not ) because of compiler's capabilities differing - then it is a reason to find few indirect issues, which would allow to improve the quality of gollvm's support and.
As for the libgo - it would a matter of supporting the library for both gollvm and main-go.

[advancedwebdeveloper]

Adding a new job, for my workflow, with Github Actions:
https://github.com/advancedwebdeveloper/clang_test_cpu_features/runs/1434601426?check_suite_focus=true

CC @thanm @ianlancetaylor @cherrymui

[advancedwebdeveloper]

It's interesting: all jobs failed
Logs for Clang 9
Logs for GCC
Logs for Clang 10
Logs for Clang 11

[advancedwebdeveloper]

Extracted from Clang 11 oriented build log:

[1495/2668] Building Go package 'hash/maphash' (PIC)
FAILED: tools/gollvm/libgo/hash/.pic/maphash.o
cd /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/tools/gollvm/libgo && /usr/local/bin/cmake -E make_directory ./hash/.pic && /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc -c -o /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/tools/gollvm/libgo/hash/.pic/maphash.o -fPIC -fgo-pkgpath=hash/maphash -I . /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/llvm-project/llvm/tools/gollvm/gofrontend/libgo/go/hash/maphash/maphash.go
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var LLVM_SYMBOLIZER_PATH to point to it):
/home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0xd77ab3]
/home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0xd75acc]
/home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0xd77f45]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x153c0)[0x7f4ba79b33c0]
/home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0xc5b156]
/home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x1829645] /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x182903b] /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x183c53e] /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x182962c] /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x182903b] /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x1829ae4] /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x15f0936]
/home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x14a95d7]
/home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x1433d95]
/home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x14348b8]
/home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x14358f3]
/home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0xc1fe3d] /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0xc255c3] /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0xc203ff] /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x471569] /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x46aa60] /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x46abc2] /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x4626a3]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0x7f4ba74290b3] /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc[0x46137e]
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace.
Stack dump:
0. Program arguments: /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/./bin/llvm-goc -c -o /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/build_release/tools/gollvm/libgo/hash/.pic/maphash.o -fPIC -fgo-pkgpath=hash/maphash -I . /home/runner/work/clang_test_cpu_features/clang_test_cpu_features/clang_test_cpu_features/llvm-project/llvm/tools/gollvm/gofrontend/libgo/go/hash/maphash/maphash.go

1. Running pass 'Function Pass Manager' on module 'gomodule'.
2. Running pass 'Combine redundant instructions' on function '@hash_1maphash.Hash.Sum'
   Segmentation fault (core dumped)

Look like this is a cause to open another issue