Hi! Fio fails to build from source with gcc 10.1: See: fio: ftbfs with GCC-10 https://bugs.debian.org/957204 Build log is here: https://people.debian.org/~doko/logs/gcc10-20200225/fio_3.16-1_unstable_gcc10.log there are errors like: gcc -Wl,-z,defs -Wl,--as-needed -Wl,-z,relro -Wl,-z,now -Wl,-z,defs -Wl,--as-needed -Wl,-z,relro -Wl,-z,now -rdynamic -o gfio crc/crc16.o crc/crc32.o crc/crc32c-arm64.o crc/crc32c-intel.o crc/crc32c.o crc/crc64.o crc/crc7.o crc/fnv.o crc/md5.o crc/murmur3.o crc/sha1.o crc/sha256.o crc/sha3.o crc/sha512.o crc/test.o crc/xxhash.o lib/axmap.o lib/bloom.o lib/flist_sort.o lib/gauss.o lib/getrusage.o lib/hweight.o lib/ieee754.o lib/lfsr.o lib/memalign.o lib/memcpy.o lib/mountcheck.o lib/num2str.o lib/output_buffer.o lib/pattern.o lib/prio_tree.o lib/rand.o lib/rbtree.o lib/strntol.o lib/zipf.o gettime.o ioengines.o init.o stat.o log.o time.o filesetup.o eta.o verify.o memory.o io_u.o parse.o fio_sem.o rwlock.o pshared.o options.o smalloc.o filehash.o profile.o debug.o engines/cpu.o engines/mmap.o engines/sync.o engines/null.o engines/net.o engines/ftruncate.o engines/filecreate.o server.o client.o iolog.o backend.o libfio.o flow.o cconv.o gettime-thread.o helpers.o json.o idletime.o td_error.o profiles/tiobench.o profiles/act.o io_u_queue.o filelock.o workqueue.o rate-submit.o optgroup.o helper_thread.o steadystate.o zone-dist.o engines/libaio.o engines/rdma.o engines/posixaio.o engines/falloc.o engines/e4defrag.o engines/splice.o engines/rados.o engines/rbd.o oslib/asprintf.o oslib/strlcat.o engines/glusterfs.o engines/glusterfs_sync.o engines/glusterfs_async.o engines/mtd.o oslib/libmtd.o oslib/libmtd_legacy.o zbd.o diskutil.o fifo.o blktrace.o cgroup.o trim.o engines/sg.o oslib/linux-dev-lookup.o engines/io_uring.o gfio.o graph.o tickmarks.o ghelpers.o goptions.o gerror.o gclient.o gcompat.o cairo_text_helpers.o printing.o -lgfapi -lglusterfs -lrbd -lrados -lrados -lnuma -lrdmacm -libverbs -lrt -laio -lz -lm -lpthread -ldl -lnuma -lrdmacm -libverbs -lrt -laio -lz -lgtk-x11-2.0 -lgdk-x11-2.0 -lpangocairo-1.0 -latk-1.0 -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lpangoft2-1.0 -lpango-1.0 -lgobject-2.0 -lfontconfig -lfreetype -lgthread-2.0 -pthread -lglib-2.0 gcc -Wl,-z,defs -Wl,--as-needed -Wl,-z,relro -Wl,-z,now -Wl,-z,defs -Wl,--as-needed -Wl,-z,relro -Wl,-z,now -rdynamic -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -D_GNU_SOURCE -include config-host.h -pthread -I/usr/include/gtk-2.0 -I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/fribidi -I/usr/include/uuid -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -Wimplicit-fallthrough -std=gnu99 -Wwrite-strings -Wall -Wdeclaration-after-statement -g -ffast-math -D_GNU_SOURCE -include config-host.h -pthread -I/usr/include/gtk-2.0 -I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/fribidi -I/usr/include/uuid -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -Wimplicit-fallthrough -I. -I. -O3 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -DBITS_PER_LONG=64 -DFIO_VERSION='"fio-3.16"' -o t/fio-genzipf t/log.o lib/ieee754.o lib/rand.o lib/pattern.o lib/zipf.o lib/strntol.o lib/gauss.o t/genzipf.o oslib/strcasestr.o oslib/strndup.o -lgfapi -lglusterfs -lrbd -lrados -lrados -lnuma -lrdmacm -libverbs -lrt -laio -lz -lm -lpthread -ldl /usr/bin/ld: goptions.o:./gfio.h:81: multiple definition of `main_ui'; gfio.o:./gfio.h:81: first defined here /usr/bin/ld: gerror.o:./gfio.h:81: multiple definition of `main_ui'; gfio.o:./gfio.h:81: first defined here /usr/bin/ld: gclient.o:./gfio.h:81: multiple definition of `main_ui'; gfio.o:./gfio.h:81: first defined here /usr/bin/ld: printing.o:./gfio.h:81: multiple definition of `main_ui'; gfio.o:./gfio.h:81: first defined here This build log is about fio-3.16, however I tested with fio-3.20 and got the same errors. I would prefer this to be fixed upstream. This is not all that urgent. There is still some time till Debian 11 aka bullseye release. First milestone for the freeze towards bullseye is planned for January 2021, so it would be good to have some fix within till November 2020. Thanks, -- Martin
