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Workaround Debian's fake System.map behavior

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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
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Rich Ercolani 2021-12-17 15:43:13 -05:00 committed by GitHub
parent eecd3f1a21
commit f68b9c81c8
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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