On Tue, Mar 31, 2015 at 02:59:36PM +0000, Ananyev, Konstantin wrote: > > > > -----Original Message----- > > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Seth Forshee > > Sent: Tuesday, March 31, 2015 3:41 PM > > To: dev at dpdk.org > > Subject: [dpdk-dev] Build failure in v2.0.0-rc3 with !CC_AVX2_SUPPORT > > > > I'm getting errors when building DPDK in an Ubuntu 15.04 VM with > > T=x86_64-native-linuxapp-gcc. I've got a small VM set up without avx2 in > > the cpu flags: > > > > $ cat /proc/cpuinfo > > processor : 0 > > vendor_id : GenuineIntel > > cpu family : 6 > > model : 6 > > model name : QEMU Virtual CPU version 2.0.0 > > stepping : 3 > > microcode : 0x1 > > cpu MHz : 2993.068 > > cache size : 4096 KB > > physical id : 0 > > siblings : 1 > > core id : 0 > > cpu cores : 1 > > apicid : 0 > > initial apicid : 0 > > fpu : yes > > fpu_exception : yes > > cpuid level : 4 > > wp : yes > > flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca > > cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm rep_good nopl > > pni vmx cx16 x2apic popcnt hypervisor lahf_lm abm vnmi ept > > > It seems that your VM cpu doesn't even have SSE3. > As I remember, DPDK doesn't support architectures prior to SSE3, i.e you need > a VM with at least core2 CPU.
This VM was set up with a script that just uses the qemu default CPU, which is quite basic. Bumping it up to a core2 with SSE3 but not avx does get the build working. So if that CPU lacks features required by DPDK then I guess there's no problem, I just didn't know how to interpret those build errors. Thanks, Seth
