On Wed, May 28, 2014 at 12:52:10PM -0000, tal zilcer wrote: > im building qemu with a large make -j value(9). > sometimes the build fails because of an error: > libtool: link: ar cru .libs/libcacard.a stubs/arch-query-cpu-def.o > stubs/clock-warp.o stubs/cpu-get-clock.o stubs/cpu-get-icount.o stubs/dump.o > stubs/fdset-add-fd.o stubs/fdset-find-fd.o stubs/fdset-get-fd.o > stubs/fdset-remove-fd.o stubs/gdbstub.o stubs/get-fd.o stubs/get-vm-name.o > stubs/iothread-lock.o stubs/migr-blocker.o stubs/mon-is-qmp.o > stubs/mon-printf.o stubs/mon-print-filename.o stubs/mon-protocol-event.o > stubs/mon-set-error.o stubs/pci-drive-hot-add.o stubs/qtest.o stubs/reset.o > stubs/runstate-check.o stubs/set-fd-handler.o stubs/slirp.o stubs/sysbus.o > stubs/uuid.o stubs/vm-stop.o stubs/vmstate.o stubs/cpus.o stubs/kvm.o > libcacard/cac.o libcacard/event.o libcacard/vcard.o libcacard/vreader.o > libcacard/vcard_emul_nss.o libcacard/vcard_emul_type.o libcacard/card_7816.o > libcacard/vcardt.o util/osdep.o util/cutils.o util/qemu-timer-common.o > util/error.o util/qemu-error.o util/oslib-posix.o util/qemu-thread-posix.o > trace/generated-events.o trace/default.o trace/control.o > trace/generated-tracers.o > ar: trace/generated-events.o: No such file or directory > make[2]: *** [libcacard.la] Error 1 > > > i see the build of generated-events.o in the log before the ar command. > because of the -j it was probably not completed yet. > the generated-events.o build command: > /usr/bin/gcc -I/home/npsdb/qemu/qemu/tcg -I/home/npsdb/qemu/qemu/tcg/i386 > -I/home/npsdb/qemu/qemu/linux-headers > -I/home/npsdb/qemu/build/linux_x86_64/linux-headers -I. > -I/home/npsdb/qemu/qemu -I/home/npsdb/jenkins/qemu/qemu/include > -I/home/npsdb/qemu/qemu/libcacard -Itrace -Itrace -fPIE -DPIE -m64 > -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes > -Wredundant-decls -Wall -Wundef -Wwrite-strings -Wmissing-prototypes > -fno-strict-aliasing -fno-common -Wendif-labels -Wmissing-include-dirs > -Wempty-body -Wnested-externs -Wformat-security -Wformat-y2k -Winit-self > -Wignored-qualifiers -Wold-style-declaration -Wold-style-definition > -Wtype-limits -fstack-protector-all -I/usr/include/libpng12 > -I/usr/include/nss3 -I/usr/include/nspr4 -pthread -I/usr/include/glib-2.0 > -I/usr/lib64/glib-2.0/include -I/usr/include/pixman-1 > -I/home/npsdb/qemu/qemu/tests -I qga/qapi-generated -MMD -MP -MT > trace/generated-events.o -MF trace/generated-events.d -O2 -U_FORTIFY_SOURCE > -D_FORTIFY_SOURCE=2 -pthread -I/usr/include/glib-2.0 > -I/usr/lib64/glib-2.0/include -g -c -o trace/generated-events.o > trace/generated-events.c > > > must be a race condition in the makefile because of a missing dependency. > i tried to find it but it was a little bit complicated to me.
Which QEMU version are you building? In qemu.git/master I can see the dependency on trace/* in libcacard/Makefile. Stefan
