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linuxptp: add patch to fix build failures with make 4.4

PATCH Applied Heiko Thiery 2 participants 3 messages Dec 3, 2022

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#0 lore raw

PATCH 1/1 linuxptp: add patch to fix build failures with make 4.4

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.

Cc James Hilliard <[email protected]>
---
 ...itional-assignment-for-KBUILD_OUTPUT.patch | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 package/linuxptp/0002-makefile-use-conditional-assignment-for-KBUILD_OUTPUT.patch
package/linuxptp/0002-makefile-use-conditional-assignment-for-KBUILD_OUTPUT.patch new file +43 -0
new file mode 100644
index 0000000000..73cd34f744
@@ -0,0 +1,43 @@
+From: Changqing Li <[email protected]>
+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 <[email protected]>
+
+[Retrieved from mailing list. The patch was not yet accepted and applied:
+https://www.mail-archive.com/[email protected]/msg06151.html]
+Signed-off-by: Heiko Thiery <[email protected]>
+
+---
+ 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
Signature · 6 lines
2.20.1

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#1 lore raw

Hi,

just realized that I forgot to add the "package/" prefix in the subject line. Can this be changed before applying or should I resend v2?

Signature · 3 lines
Heiko

Am Sa., 3. Dez. 2022 um 11:18 Uhr schrieb Heiko Thiery <[email protected]>:
Quoted 64 lines

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.

Cc James Hilliard <[email protected]>
---
 ...itional-assignment-for-KBUILD_OUTPUT.patch | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 package/linuxptp/0002-makefile-use-conditional-assignment-for-KBUILD_OUTPUT.patch
package/linuxptp/0002-makefile-use-conditional-assignment-for-KBUILD_OUTPUT.patch new file +43 -1
new file mode 100644
index 0000000000..73cd34f744
@@ -0,0 +1,43 @@
+From: Changqing Li <[email protected]>
+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 <[email protected]>
+
+[Retrieved from mailing list. The patch was not yet accepted and applied:
+https://www.mail-archive.com/[email protected]/msg06151.html]
+Signed-off-by: Heiko Thiery <[email protected]>
+
+---
+ 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
--
Quoted 2 lines

2.20.1

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#2 lore raw
In reply to Heiko Thiery
Quoted 4 lines · On Sat, 3 Dec 2022 11:18:04 +0100 Heiko Thiery <[email protected]> wrote:

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.

Quoted 8 lines
Cc James Hilliard <[email protected]>
---
 ...itional-assignment-for-KBUILD_OUTPUT.patch | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 package/linuxptp/0002-makefile-use-conditional-assignment-for-KBUILD_OUTPUT.patch

Applied to master, thanks (yes, after fixing the commit title).

Thomas

Signature · 7 lines
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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