Depmod fails here since we're still in DESTDIR and the actual target path may
not exist...


diff -ruN linux-gpib-kernel-4.3.4.orig/Makefile linux-gpib-kernel-4.3.4/Makefile
--- linux-gpib-kernel-4.3.4.orig/Makefile	2020-12-29 10:42:34.000000000 +0100
+++ linux-gpib-kernel-4.3.4/Makefile	2022-08-02 12:21:38.097344102 +0200
@@ -20,13 +20,9 @@
 		M="$(GPIB_SRCDIR)/drivers/gpib" \
 		GPIB_TOP_DIR=$(GPIB_SRCDIR) 
 
-#We run depmod explicitly because the depmod.sh script run
-#by modules_install fails on Debian due to it failing to find
-#the System.map file.
 install:
 	$(MAKE) -C $(LINUX_SRCDIR) V=$(VERBOSE) modules_install\
 		M="$(GPIB_SRCDIR)/drivers/gpib" \
 		GPIB_TOP_DIR=$(GPIB_SRCDIR) \
 		INSTALL_MOD_DIR=gpib
-	/sbin/depmod -A