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Workaround Debian's fake System.map behavior 

Debian ships fake System.map files by default, leading to the
invocation of depmod with them to flood you with errors about
missing symbols.

Let's notice and not do that.

Reviewed-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rich Ercolani <rincebrain@gmail.com>
Closes #12862
This commit is contained in:
Rich Ercolani 2021-12-17 15:43:13 -05:00 committed by Tony Hutter
parent a35125e3d5
commit 2e3b3e3a2e
1 changed files with 8 additions and 0 deletions
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8
module/Makefile.in
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@ -90,7 +90,15 @@ modules_install-Linux:
if [ -n "$(DESTDIR)" ]; then \
find $$kmoddir -name 'modules.*' | xargs $(RM); \
fi
@# Debian ships tiny fake System.map files that are
@# syntactically valid but just say
@# "if you want system.map go install this package"
@# Naturally, depmod is less than amused by this.
@# So if we find it missing or with one of these present,
@# we check for the alternate path for the System.map
sysmap=$(INSTALL_MOD_PATH)/boot/System.map-@LINUX_VERSION@; \
{ [ -f "$$sysmap" ] && [ $$(wc -l < "$$sysmap") -ge 100 ]; } || \
sysmap=$(INSTALL_MOD_PATH)/usr/lib/debug/boot/System.map-@LINUX_VERSION@; \
if [ -f $$sysmap ]; then \
depmod -ae -F $$sysmap @LINUX_VERSION@; \
fi