Installing source

Hi Wallace,

There are several ways to get the latest version of EMC.

Using Git to download and maintain the source:

wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Installing_EMC2

Download the deb:

buildbot.linuxcnc.org/

I usually use Git but your mileage may vary... With the Git you can create a RIP (Run In Place) version along side of an installed version. EMC is started by the script file in installed_directory/src/emc.

John

The source is in src/ (with some of the interpreted stuff like Python elsewhere)
It is broken up into src/emc/ which contains the code related to motion planning (motion/) kinematics, G-code interpreter (rs274ngc) and the user interfaces.
src/hal/ contains all the HAL functions and the hardware drivers.
src/rtapi/ contains the realtime libraries.

The structure is just like you are used to, source compiled to make an executable file. (well, actually, lots of executable files). The main "EMC2" executable is called "emc" and is in scripts, I think.

However, I often just use halrun for testing HAL components.

marsheng wrote:

How do I compile emc2 ?

Type "Make" in the src/ directory.

Do I need to install a compiler?

Possibly. And you might need to do some once-only configuration too.
Section 2.4 here: wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Ins...ilding_emc2_realtime
And
sudo apt-get build-dep emc2
sudo apt-get install build-essential autoconf
To install the compilers.

I develop in Xcode with the source files remotely mounted. I think I am the only one who does that.
Debugging is a bit tricky in the kernel modules, but you can use gdb in userspace modules.
In kernel modules I think debugging is limited to rtapi_print..

Actually EMC targets specific Ubuntu LTS releases only. The developers use text editors. It can be someone confusing until you understand...

John