[Buildroot] pkg-generic.mk question
ANDY KENNEDY
ANDY.KENNEDY at adtran.com
Thu Jan 10 18:58:00 UTC 2013
All,
Consider the following (from pkg-generic.mk):
define inner-generic-package
<snip>
$(2)_TYPE = $(5)
<snip>
$(2)_DIR = $$(BUILD_DIR)/$$($(2)_BASE_NAME)
The <PKG>_TYPE is set to "$" (5), however, the <PKG>_DIR is set to
"$$" (BUILD_DIR)/$$<the rest>. My question is why the need for the $$
for BUILD_DIR? I THINK I understand the reason for the
$$($(2)_BASE_NAME): The eval will boil this down to $(<PKG>_BASE_NAME),
which will the get POST interrupted AFTER <PKG>_BASE_NAME is assigned
LATER, right?
But, I'm confused as to the reason for the $$(BUILD_DIR). It is
assigned well before the reading of this file and is essentially a
static variable.
NOTE: This question is for my own edification and learning. I'm not
questioning the ability/logic of this Makefile as I know it works
perfectly. I'm attempting to do something similar in a Makefile of my
own.
Thanks in advance for the information!
Andy
More information about the buildroot
mailing list