I need to install the following libraries by zypper to install the ethercat:
git, kernel-default-devel, gcc , gcc-c++, autoconf, libtool.

When doing the configure in ethercat repo, I need to do:

./configure --enable-generic --disable-e100 --disable-8139too --disable-e1000 --disable-r8169

The followings are the references:
1. https://gitlab.com/etherlab.org/ethercat
2. https://etherlab-users.etherlab.narkive.com/H9VjgQsW/linux-distribution-for-igh-ethercat-master
3. https://www.etherlab.org/en/ethercat/index.php
4. https://doc.opensuse.org/documentation/leap/archive/42.2/reference/html/book.opensuse.reference/cha.sw_cl.html

The service of ethercat can not run successfully. I think this is because there is no hardware connected actually.

Please help to review this ticket based on the comments. Thanks!

I have installed the OpenSuse Leap 15.3 SO in Virtual Machine (Virtual Box 6.1). The ISO file is the following:

openSUSE-Leap-15.3-2-DVD-x86_64-Build24.5-Media.iso

The following steps have been the suggested by Te-Wei:

Installing the libs (Git, Kernel-default-devel, gcc, gcc-c++, autoconf, libtool.

Then, the bootstrap script was executed successfully. But not the:

./configure --enable-generic --disable-e100 --disable-8139too --disable-e1000 --disable-r8169

I got the following error:

configure: error: Failed to find Linux sources. Use --with-linux-dir!

The Kernel-default-devel installed version is:

Information for package kernel-default-devel:
---------------------------------------------
Repository : Update repository with updates from SUSE Linux Enterprise 15
Name : kernel-default-devel
Version : 5.3.18-150300.59.54.1
Arch : x86_64
Vendor : SUSE LLC <https://www.suse.com/>
Installed Size : 4.5 MiB
Installed : Yes
Status : up-to-date
Source package : kernel-default-5.3.18-150300.59.54.1.nosrc
Summary : Development files necessary for building kernel modules
Description :
This package contains files necessary for building kernel modules (and
kernel module packages) against the default flavor of the kernel.

the kernel folder should be /usr/src which content is:

linux          linux-5.3.18-150300.59.54-obj          packages
linux-5.3.18-150300.59.54          linux-obj

The content of linux-5.3.18-150300.59.54 is:

arch crypto fs ipc kernel mm scripts tools
block Documentation include Kbuild lib net security usr
certs drivers init Kconfig Makefile samples sound virt

I haven't been success with any of the following two variants:

./configure --enable-generic --disable-e100 --disable-8139too --disable-e1000 --disable-r8169 --with-linux-dir=/usr/src/linux-5.3.18-150300.59.54/kernel

 ./configure --enable-generic --disable-e100 --disable-8139too --disable-e1000 --disable-r8169 --with-linux-dir=/usr/src/linux-5.3.18-150300.59.54/kernel 

both with the same error:

configure: error: No configured Linux kernel sources in /usr/src/linux-5.3.18-150300.59.54

and

configure: error: No configured Linux kernel sources in /usr/src/linux-5.3.18-150300.59.54/kernel

An email has been sent to the trainer to figure out the issue.

After the OpenSuse install, run the Package Updater.

All the updates solve the last issue.

After the following steps at the EtherLab Master User Manual, it doesn't look like work properly. Let's see at the training tomorrow.