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Update Environment-Variables.md

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Grammatical improvements
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dbankieris 2020-05-13 14:33:29 -05:00 committed by GitHub
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docs/documentation/building_a_simulation/Environment-Variables.md
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@ -147,10 +147,10 @@ TRICK_GTE_EXT += VAR1 VAR3 VAR4
```
At run time:
* `VAR1` will default to `potato`
* `VAR2` will be undefined by default, as it was not added to `TRICK_GTE_EXT`
* `VAR3` will be undefined by default if it was not present in the environment at compile time as it was not explicitly `export`ed in the makefile. If it *was* present in the envinroment at compile time, it will default to `banana`, as such variables are exported by default and explicit assignments override environment values.
* `VAR4` will default to its compile-time environment value, if any
* `VAR1` will default to `potato`.
* `VAR2` will be undefined by default, as it was not added to `TRICK_GTE_EXT`.
* `VAR3` will be undefined by default if it was not present in the environment at compile time, as it was not explicitly `export`ed in the makefile. If it *was* present in the envinroment at compile time, it will default to `banana`, as such variables are automatically exported, and explicit assignments override environment values in `make`.
* `VAR4` will default to its compile-time environment value, if any.
* For each variable, the default value will only be used if that variable is not present in the environment at run time.
### MAKEFLAGS