[ipxe-devel] [ipxe/ipxe] fix EMBED: don't eagerly assign over non-empty value (#115)

realtime-neil notifications at github.com
Wed Jul 1 17:18:09 UTC 2020

@mcb30 thank you for your explanation. I found the sentiment you referenced:

> When make runs a recipe, variables defined in the makefile are placed into the environment of each shell.
> ...
> Other use of variables from the environment is not recommended. It is not wise for makefiles to depend for their functioning on environment variables set up outside their control, since this would cause different users to get different results from the same makefile. This is against the whole purpose of most makefiles.

-- https://www.gnu.org/software/make/manual/make.html#Environment

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