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[bug #52209] Support for ifeq function

From: Rob
Subject: [bug #52209] Support for ifeq function
Date: Sun, 15 Oct 2017 08:59:01 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0

Follow-up Comment #4, bug #52209 (project make):

Patch added.

The rational is that this is an operation needed to support rebuilding of
targets when recipes change.

Support for rebuilding of targets on recipe change requires the recipe of
every target to be expanded and compared with its previously used recipe.
These happens on every build, even if all targets are up-to-date, so can
contribute a significant amount to the processing time of a large mostly
up-to-date project. A more efficient way to compare previous and current
recipes than that in the first post would help reduce processing time.

I have only created the $(ifeq ...) function and added nothing to .FEATURES,
or test suite, or documentation. I can do this if the patch is accepted.

(file #42159)

Additional Item Attachment:

File name: function.c.patch               Size:1 KB


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