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<== Date ==> <== Thread ==>

Subject: Re: OpneCL and base and IOC
From: Jeong Han Lee via Tech-talk <tech-talk@aps.anl.gov>
To: tech-talk@aps.anl.gov
Date: Thu, 26 Sep 2019 11:42:36 +0200


On 9/26/19 4:15 AM, Ha, Kiman via Tech-talk wrote:
Hello All,

I have a plan to use the OpenCL API and library with epics IOC.

The platform is Linux 64bit.

My build option is to use the “xcpp” compiler instead of the “gcc”.

The “xcpp" compiler is Xilinx C++ compiler which is based on GNU compiler collection.

With below build options:

CXXFLAGS += -std=c++14

LDFLAGS += -lOpenCL


 Hi Kiman,

 I am sorry, I didn't focus your questions in my previous email.

My questions are:

 1. Do I need re-build base using the “xcpp” compiler?

               If yes, which base configuration files need to change?


If you need the cross compiler toolchain to compile the EPICS base, you have to check it within
  https://github.com/epics-base/epics-base/tree/7.0/configure/os

In base/configure/CONFIG_SITE, you can define CROSS_COMPILER_TARGET_ARCHS in order to match your Xilinx toolchain.

If you cannot find one to match your own, you have to create one to match your toolchain environment.

You can find almost every information in base/confgure/os. In addition, the following path may help you to do so

  https://github.com/icshwi/e3-base/tree/master/configure/os

 2. Or only my IOC application need to add the OpenCL library with
    "xcpp" compiler?

Yes, you only need OpenCL library, and (maybe) header files in your IOC application makefile or configuration files, which I explained in my previous email.


  HTH,
  Han



Thanks,

Kiman


References:
OpneCL and base and IOC Ha, Kiman via Tech-talk

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