Re: [dpdk-dev] Build DPDK for different target machine.

["Shubhachint, Chaitanya" <Chaitanya.Shubhachint@netscout.com>]

Hello,

My objective is to build a shared dpdk library on a build machine and copy it over to target machine of similar hardware specs.
 I am building with steps below:
1. untar dpdk source.
2. modify config/common_base as =>
	CONFIG_RTE_BUILD_SHARED_LIB=y
	CONFIG_RTE_MACHINE=“default”
3. make config T=x86_64-native-linuxapp-gcc export
4. make install T=x86_64-native-linuxapp-gcc export

Looks like step 2 is successful in changing the build to shared-library but there is no effect of setting CONFIG_RTE_MACHINE=“default”. I see no change in any of the header files or resultant binary files. 
What am I missing?
Thanks
Chai.

-----Original Message-----
From: Ferruh Yigit <ferruh.yigit@intel.com> 
Sent: Monday, October 22, 2018 02:58 AM
To: Shubhachint, Chaitanya <Chaitanya.Shubhachint@netscout.com>; dev@dpdk.org
Subject: Re: [dpdk-dev] Build DPDK for different target machine.

[EXTERNAL EMAIL]

On 10/19/2018 5:24 PM, Shubhachint, Chaitanya wrote:
> Hello,
> 
> I am trying to build DPDK library set (shared) so that there are somewhat portable. I want to build them once on a designated build machine and run them on other machines of similar architecture. I can build DPDK and use it locally successfully but running them on a different target machine always gives me core dump with 'Illegal instruction'.
> 
> I am building with
> make install T=x86_64-native-linuxapp-gcc export 
> RTE_TARGET=x86_64-native-linuxapp-gcc
> and CONFIG_RTE_BUILD_SHARED_LIB=y
> 
> I have tried setting CONFIG_RTE_MACHINE, as "default" or "snb" but that does not help.

Hi Chai,

By "native" machine you can have the problem you mentioned but "default" should solve the issue.
- Are you sure you are not overwriting your change in config, how do you set it?
- Is there any specific module/part of DPDK you are getting this error?

> 
> Help is much appreciated. Details of Build machine and target machine below:
> 
> Thanks
> Chai.
> 
> Build machine:
> DPDK_Build/dpdk-18.08# lscpu
> Architecture:          x86_64
> CPU op-mode(s):        32-bit, 64-bit
> Byte Order:            Little Endian
> CPU(s):                8
> On-line CPU(s) list:   0-7
> Thread(s) per core:    1
> Core(s) per socket:    8
> Socket(s):             1
> NUMA node(s):          1
> Vendor ID:             GenuineIntel
> CPU family:            6
> Model:                 79
> Model name:            Intel(R) Xeon(R) CPU E5-2640 v4 @ 2.40GHz
> Stepping:              1
> CPU MHz:               2399.998
> BogoMIPS:              4799.99
> Hypervisor vendor:     VMware
> Virtualization type:   full
> L1d cache:             32K
> L1i cache:             32K
> L2 cache:              256K
> L3 cache:              25600K
> NUMA node0 CPU(s):     0-7
> Flags:                 fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc cpuid aperfmperf pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 invpcid rtm rdseed adx smap xsaveopt dtherm ida arat pln pts
> 
> 
> Target Machine:
> $lscpu
> Architecture:          x86_64
> CPU op-mode(s):        32-bit, 64-bit
> Byte Order:            Little Endian
> CPU(s):                6
> On-line CPU(s) list:   0-5
> Thread(s) per core:    1
> Core(s) per socket:    6
> Socket(s):             1
> NUMA node(s):          1
> Vendor ID:             GenuineIntel
> CPU family:            6
> Model:                 45
> Model name:            Intel(R) Xeon(R) CPU E5-2667 0 @ 2.90GHz
> Stepping:              7
> CPU MHz:               1682.069
> CPU max MHz:           3500.0000
> CPU min MHz:           1200.0000
> BogoMIPS:              5785.61
> Virtualization:        VT-x
> L1d cache:             32K
> L1i cache:             32K
> L2 cache:              256K
> L3 cache:              15360K
> NUMA node0 CPU(s):     0-5
> Flags:                 fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm epb pti tpr_shadow vnmi flexpriority ept vpid xsaveopt ibpb ibrs stibp dtherm ida arat pln pts
>