[erlang-questions] Making changes to the erlang libs
Wed Jan 24 19:21:21 CET 2018
The Debian box I am using has Erlang installed from Erlang Solutions.
For personal use, I use kerl to install a version within my home
directory and switch to it using the kerl activate command. The global
version is 20.1 and the my own version is 20.2 as verified by running
erl before and after activating.
What I do for installing and activating the local erlang install:
$ kerl build 20.2 20.2
Erlang/OTP 20.2 (20.2) has been successfully built
$ kerl install 20.2 ~/otp/20.2
Installing Erlang/OTP 20.2 (20.2) in /home/frans/otp/20.2...
$ . /home/frans/otp/20.2/activate
This changes $PATH and adds some _KERL* variables to the env.
In erl, I check where xmer_xsd resides:
I edit file "/home/frans/otp/20.2/lib/xmerl-1.3.16/src/xmerl_xsd_erl"
and compile using c(xmerl_xsd) and now I see why all this goes wrong. It
and not the file I was editing.
Could somebody explain why it is using the sources from the .kerl
directory and not the otp directory?
Now I can run some tests with little effort before even thinking about a
On 01/24/2018 05:14 PM, Wes James wrote:
> How is your initial erlang installed. One way is to git clone the
> source, git checkout the version you want to install, make your changes
> to the file and then make, then rename /usr/local/lib/erlang to
> something else, then sudo make install and the change should take
> effect. killall epmd or any other erlang apps that might be running,
> then start your app.
> On Wed, Jan 24, 2018 at 8:14 AM, Frans Schneider <fchschneider@REDACTED
> <mailto:fchschneider@REDACTED>> wrote:
> Hi list,
> I want to make some changes to xmerl_xsd because I think there is a
> bug in there. I use kerl and made an installation with the latest
> 20.2 release. So, I thought I would just edit the source of
> xmerl_xsd where kerl installed the sources and use c(xmerl_xsd) to
> compile the thing, however nothing happens. I see the beam file
> getting a new time stamp after compiling but its size remains the
> same, so I assume it compiles using some other source file than the
> one I am editing.
> So, what is it I am doing wrong and what is the easiest way to make
> changes to library modules and do some experiments?
> erlang-questions mailing list
> erlang-questions@REDACTED <mailto:erlang-questions@REDACTED>
More information about the erlang-questions