Warnings are treated as errors System: Ubuntu 14.04, 32bit Kernel: 3.13.0-55-generic Qemu: v. 2.2.50 Error msg: hw/acpi/pcihp.c: In function ‘acpi_pcihp_pc_no_hotplug’: hw/acpi/pcihp.c:117:34: error: ‘PCIDevice’ has no member named ‘qdev’ return (pc->is_bridge && !dev->qdev.hotplugged) || !dc->hotpluggable; ^ hw/acpi/pcihp.c:118:1: error: control reaches end of non-void function [-Werror=return-type] } ^ cc1: all warnings being treated as errors I have same error "PCIDevice has no member named 'qdev'" with you. Did you find any solutions to this error? (a) That warnings are treated as errors is a feature, not a bug (it happens for development builds only) (b) the definition of struct PCIDevice in include/hw/pci/pci.h starts with "DeviceState qdev;" so it's not clear to me how that error could be produced in the first place I see the original submitter was using 2.2.50 -- I suggest using either (a) a release build of QEMU or (b) current master. 2.2.50 will be from somewhere on trunk between 2.2 and 2.3, so might quite possibly have had a build bug that was quickly fixed subsequently. Closing this as invalid - unless you can reproduce this with the latest release version or the current master branch again, then please feel free to open this ticket again.