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Update makefile.md

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Rico Sta. Cruz 2019-01-20 14:49:16 +08:00 committed by GitHub
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@ -8,11 +8,13 @@ category: CLI
## Var assignment
```makefile
uglify = $(uglify) # assignment (right hand side is evaluated when variable is used)
compressor := $(uglify) # immediate assignment (right hand side is evaluated at assignment)
uglify = $(uglify) # lazy assignment
compressor := $(uglify) # immediate assignment
prefix ?= /usr/local # safe assignment
```
`=` expressions are only evaluated when they're being used.
## Magic variables
```makefile