Sublime Forum

**subuserno1** · October 31, 2017, 11:07am

Hi guys. I am wondering if I can set my own variable in build system? like:
ip:192.168.2.12,

then I can use this variable in the next steps.
Or I have to set it as environment variable? I feel that way sort of contaminated my system environment.

**r-stein** · October 31, 2017, 12:15pm

You can either create environment variables in the build system via "env": { "MYVAR": "foobar" } or write you own target command, which gets all non special fields as keyword arguments, and call exec from there.

PS. Environment variables are only set for the build system process and not global.

**nutjob2** · October 31, 2017, 12:21pm

You can script your build command in some scripting language such as perl or bash to avoid such issues.

**OdatNurd** · October 31, 2017, 1:18pm

Just to add to what’s already been said, this is an example of writing your own custom target command to add your own variables to build systems. if you want to go that route.

github.com

STealthy-and-haSTy/SublimeScraps/blob/master/build_enhancements/custom_build_variables.py

import sublime, sublime_plugin

# Related reading:
#     http://stackoverflow.com/questions/40193019/set-project-dependent-build-system-variables

# This is yet another example of how to customize Sublime build systems to do
# what you want them to do. In this example, we provide the ability to specify
# our own custom build variables for cases when the ones built into Sublime are
# not enough.

# For this to work, you need to specify that the "target" is this command,
# specify the command to execute as "command" instead of "cmd", and of course
# provide the settings that you want to expand (such as in your project or from
# a plugin).
#
# An example might be:
#
# {
#     "target": "my_custom_build",
#     "command": ["build.sh", "${proj_var_1}"],

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Can I set my own variable in build system?