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Fix OUTPUT environment variable for LKL build. #586

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Merged
merged 1 commit into from
Mar 31, 2025
Merged

Fix OUTPUT environment variable for LKL build. #586

merged 1 commit into from
Mar 31, 2025

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rodionov
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This enables building LKL outside of source tree.

mkdir /tmp/lkl_out
OUTPUT=/tmp/lkl_out make -C tools/lkl -j32

@rodionov rodionov requested review from tavip and thehajime March 30, 2025 04:43
@rodionov rodionov changed the title Fix OUTPUT environment variable for LKL build and add arch memmove implementation. Fix OUTPUT environment variable for LKL build. Mar 30, 2025
@rodionov
Fix OUTPUT environment variable for LKL build.
eca6448 
This enables building LKL outside of source tree.

```
mkdir /tmp/lkl_out
OUTPUT=/tmp/lkl_out make -C tools/lkl -j32
```

Signed-off-by: Eugene Rodionov <[email protected]>
@rodionov rodionov linked an issue Mar 30, 2025 that may be closed by this pull request
LKL build doesn't work with OUTPUT variable other than the source tree #581
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@thehajime
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thanks @rodionov for the patch.

I was wondering if we can use O= variable to the command line instead of OUTPUT=, which is the standard way of kbuild to specify the output directory, and I thought LKL also follows this way.

wish to ask @tavip for the initial design.

tavip
tavip approved these changes Mar 31, 2025
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It looks like OUTPUT was introduced a long time ago in 9bf4b14. I am OK leaving as it is for this fix, we could rename it to O in a subsequent PR.

@thehajime
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It looks like OUTPUT was introduced a long time ago in 9bf4b14.

Oooh, yes, that was me...

without this patch, make -C tools/lkl O=somewhere (not OUTPUT=) failed and with this patch the issue fixes.
I think we can merge this.

@thehajime thehajime merged commit 11f5b7e into lkl:master Mar 31, 2025
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@thehajime
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thanks @rodionov @tavip.

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@tavip tavip tavip approved these changes

@thehajime thehajime Awaiting requested review from thehajime

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LKL build doesn't work with OUTPUT variable other than the source tree
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@rodionov @thehajime @tavip