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[scarthgap,17/30] python_setuptools_build_meta: clean the build directory in configure

Message ID d4950d6df0867dcd5c380d83ac4d138ec968e698.1781682189.git.yoann.congal@smile.fr
State New
Headers show
Series [scarthgap,01/30] conf/machine: fix typos in ARM and x86 README files | expand

Commit Message

Yoann Congal June 17, 2026, 7:44 a.m. UTC 
From: Ross Burton <ross.burton@arm.com>

It's not currently possible to set the build tree to be somewhere we
control, but we know it will always be in the build directory alongside
the pyproject.toml so we can [cleandirs] that.

MJ: this was later reverted in a532cb50151d773c1c351ffccf4d47a37f26f8aa:
  This is not needed: setuptools.build_meta does the build under a new
  temporary directory.

but the builds in scarthgap aren't using new temporary directory yet,
so this is still useful there:

Just rebuilding python3-tqdm in the same TMPDIR after cherry-picking this:

$ buildhistory-diff -p buildhistory build-minus-1 | grep PKGSIZE
python3-tqdm/python3-tqdm: PKGSIZE changed from 3309408 to 426880 (-87%)

$ wc -l python3-tqdm/4.66.3*/image/usr/lib/python3.12/site-packages/tqdm-4.66.3.dist-info/RECORD
  297 python3-tqdm/4.66.3-old/image/usr/lib/python3.12/site-packages/tqdm-4.66.3.dist-info/RECORD
   41 python3-tqdm/4.66.3/image/usr/lib/python3.12/site-packages/tqdm-4.66.3.dist-info/RECORD

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Martin Jansa <martin.jansa@gmail.com>
(cherry picked from commit 383862cfe4c5acf04124080827c8bc6d00b2e86d)
Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
---
 meta/classes-recipe/python_setuptools_build_meta.bbclass | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/meta/classes-recipe/python_setuptools_build_meta.bbclass b/meta/classes-recipe/python_setuptools_build_meta.bbclass
index 4c84d1e8d0b..046b4ffb74f 100644
--- a/meta/classes-recipe/python_setuptools_build_meta.bbclass
+++ b/meta/classes-recipe/python_setuptools_build_meta.bbclass
@@ -7,3 +7,7 @@ 
 inherit setuptools3-base python_pep517
 
 DEPENDS += "python3-setuptools-native python3-wheel-native"
+
+# This isn't nice, but is the best solutions to ensure clean builds for now.
+# https://github.com/pypa/setuptools/issues/4732
+do_configure[cleandirs] = "${PEP517_SOURCE_PATH}/build"