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package/linuxptp: add patch to fix build failures with make 4.4

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When using make 4.4 the KBOUD_OUTPUT environment variable provided to
the linuxptp makefile is not utilized. The added patch will fix that
behavior.

Fixes: http://autobuild.buildroot.net/results/5294fac7ed04945d47ea4eb2d1448bcbea5352bb/

Cc: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Heiko Thiery 2022-12-03 11:18:04 +01:00 committed by Thomas Petazzoni
parent 89815bad0a
commit e87d929666
1 changed files with 43 additions and 0 deletions
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43
package/linuxptp/0002-makefile-use-conditional-assignment-for-KBUILD_OUTPUT.patch Normal file
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@ -0,0 +1,43 @@
From: Changqing Li <changqing.li@windriver.com>
Date: Wed, 23 Nov 2022 08:23:46 +0800
Subject: [Linuxptp-devel] [PATCH] makefile: use conditional assignment for KBUILD_OUTPUT
Refer [1],from make 4.4, all variables that are marked as export will
also be passed to the shell started by the shell function. use "=" will
make KBUILD_OUTPUT always empty for shell function, use "?=" to make
"export KBUILD_OUTPUT" in enrironment can work.
[snip of 4.4 NEWS]
* WARNING: Backward-incompatibility!
Previously makefile variables marked as export were not exported to commands
started by the $(shell ...) function. Now, all exported variables are
exported to $(shell ...).
[snip]
[1] https://git.savannah.gnu.org/cgit/make.git/tree/NEWS?h=4.4&id=ed493f6c9116cc217b99c2cfa6a95f15803235a2#n74
Signed-off-by: Changqing Li <changqing.li@windriver.com>
[Retrieved from mailing list. The patch was not yet accepted and applied:
https://www.mail-archive.com/linuxptp-devel@lists.sourceforge.net/msg06151.html]
Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
---
makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/makefile b/makefile
index 9aed383..ba3fb38 100644
--- a/makefile
+++ b/makefile
@@ -15,7 +15,7 @@
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-KBUILD_OUTPUT =
+KBUILD_OUTPUT ?=
DEBUG =
CC = $(CROSS_COMPILE)gcc
--
2.25.1