[PATCH] logo: work around broken inkscape in Debian Trixie

[Sascha Hauer <s.hauer@pengutronix.de>]

This works around a broken inkscape in Debian Trixie. With
Inkscape 1.4 (e7c3feb100, 2024-10-09). When executing multiple inkscape
instances in parallel it often fails with:

terminate called after throwing an instance of 'Gio::DBus::Error'

This is described in [1] and this patch utilizes a workaround from this
thread.

[1] https://gitlab.com/inkscape/inkscape/-/issues/4716

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 lib/logo/Makefile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/logo/Makefile b/lib/logo/Makefile
index 9c14105e88..9792a4699f 100644
--- a/lib/logo/Makefile
+++ b/lib/logo/Makefile
@@ -68,8 +68,11 @@ quiet_cmd_bmp = BMP     $@
 %.bmp: $(srctree)/Documentation/barebox.svg FORCE
 	$(call if_changed,bmp)
 
+# export SELF_CALL=xxx works around issue in [1]. This is seen on Debian Trixie
+# with Inkscape 1.4 (e7c3feb100, 2024-10-09)
+# [1] https://gitlab.com/inkscape/inkscape/-/issues/4716
 quiet_cmd_png = PNG     $@
-      cmd_png =	convert $(OPTS_$(@F:.png=)) $(CONVERTOPTS) $< png:$@
+      cmd_png =	export SELF_CALL=xxx ; convert $(OPTS_$(@F:.png=)) $(CONVERTOPTS) $< png:$@
 
 %.png: $(srctree)/Documentation/barebox.svg FORCE
 	$(call if_changed,png)
-- 
2.47.2