Thread (70 messages) 70 messages, 8 authors, 2024-08-23

Re: [PATCH] depmod: Handle installing modules under a prefix

From: Jiri Slaby <jirislaby@kernel.org>
Date: 2023-07-12 05:47:21
Also in: linux-kbuild, lkml

On 11. 07. 23, 17:34, Michal Suchanek wrote:
quoted hunk ↗ jump to hunk
Some distributions aim at not shipping any files in / ustside of usr.

The path under which kernel modules are instaleld is hardcoded to /lib
which conflicts with this goal.

When kmod provides the config command use it to determine the correct
module installation prefix.

On kmod that does not provide the command / is used as before.

Signed-off-by: Michal Suchanek <redacted>
---
  Makefile          | 4 +++-
  scripts/depmod.sh | 8 ++++----
  2 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/Makefile b/Makefile
index 47690c28456a..b05d696f06bd 100644
--- a/Makefile
+++ b/Makefile
@@ -1165,7 +1165,9 @@ export INSTALL_DTBS_PATH ?= $(INSTALL_PATH)/dtbs/$(KERNELRELEASE)
  # makefile but the argument can be passed to make if needed.
  #
  
-MODLIB	= $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
+export KERNEL_MODULE_PREFIX := $(shell kmod config | jq -r .module_prefix)
echo -e 'KERNEL_MODULE_PREFIX := $(shell kmod config | jq -r 
.module_prefix)\nall:'|make -f -
invalid command 'config'
parse error: Invalid numeric literal at line 1, column 5

I think you should pipe kmod's 2> /dev/null to support older kmod. Ah, 
but you'd need 2> /dev/null for jq too. That would not be good as jq 
might not be installed and a user wouldn't see the error. So instead, I 
would do:

$(shell kmod config &> /dev/null && kmod config | jq -r .module_prefix)

thanks,
-- 
js
suse labs
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