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Correct description of ":=" and "=" operators 

The description of the ":=" and "=" assignment operators were flipped. As documented in the GNU make manual (https://www.gnu.org/software/make/manual/make.html#Reading-Makefiles), the ":=" assignment operatory is the immediate assignment operation and "=" is the deferred assignment operation. This change switches the descriptions to correspond to the correct operator and augments the description to clarify the behaviour.
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Shreyas Chand 2019-01-15 22:59:49 -08:00 committed by GitHub
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@ -8,8 +8,8 @@ category: CLI
## Var assignment ## Var assignment
```makefile ```makefile
uglify = $(uglify) # assignment uglify = $(uglify) # assignment (right hand side is evaluated when variable is used)
compressor := $(uglify) # lazy assignment compressor := $(uglify) # immediate assignment (right hand side is evaluated at assignment)
prefix ?= /usr/local # safe assignment prefix ?= /usr/local # safe assignment
``` ```