mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-30 01:23:03 +00:00
f19c961b4e
With the default kernel and thus with the build I have tested in
74ec94bfa2, we get an error during
modules_install:
make[2]: execvp: /nix/store/.../bin/bash: Argument list too long
I haven't noticed this build until I actually tried booting using this
kernel because make didn't fail here.
The reason this happens within Nix and probably didn't yet surface in
other distros is that programs only have a limited amount of memory
available for storing the environment and the arguments.
Environment variables however are quite common on Nix and thus we
stumble on problems like this way earlier - in this case Linux 4.8 - but
I have noticed this in 4.7-next as well already.
The fix is far from perfect and suffers performance overhead because we
now run grep for every *.mod file instead of passing all *.mod files
into one single invocation of grep.
But comparing the performance overhead (around 1s on my machine) with
the overall build time of the kernel I think the overhead really is
neglicible.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
15 lines
492 B
Diff
15 lines
492 B
Diff
diff --git a/scripts/Makefile.modinst b/scripts/Makefile.modinst
|
|
index 07650ee..934a7a8 100644
|
|
--- a/scripts/Makefile.modinst
|
|
+++ b/scripts/Makefile.modinst
|
|
@@ -9,7 +9,8 @@ include scripts/Kbuild.include
|
|
|
|
#
|
|
|
|
-__modules := $(sort $(shell grep -h '\.ko$$' /dev/null $(wildcard $(MODVERDIR)/*.mod)))
|
|
+__modules := $(sort $(foreach f,$(wildcard $(MODVERDIR)/*.mod),$(shell \
|
|
+ grep -h '\.ko$$' '$f')))
|
|
modules := $(patsubst %.o,%.ko,$(wildcard $(__modules:.ko=.o)))
|
|
|
|
PHONY += $(modules)
|