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Fix "make install" with DESTDIR set (#16995)

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"DESTDIR=/path/to/target/root/ make install" may fail when installing to
a root that contains an existing lib/modules structure. When run as root
we may even affect the wrong kernel (the build system's one, or, if
running a different version, some other directory in /lib/modules, but
not the desired one installed in DESTDIR).

Add a missing reference to the INSTALL_MOD_PATH root when calling
"depmod" during "make install"

Also add a switch "DONT_DELETE_MODULES_FILES=1" that skips the removal
of files named "modules.*" prior to running depmod.

Signed-off-by: Christian Kohlschütter <christian@kohlschutter.com>
Closes #16994

Reviewed-by: Rob Norris <robn@despairlabs.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
This commit is contained in:
Dr. Christian Kohlschütter 2025-02-08 01:38:58 +01:00 committed by Ameer Hamza
parent 7784947923
commit 001ab5941d
1 changed files with 2 additions and 2 deletions
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4
module/Makefile.in
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@ -93,7 +93,7 @@ modules_install-Linux: modules_uninstall-Linux-legacy
$(if @KERNEL_ARCH@,ARCH=@KERNEL_ARCH@) \
KERNELRELEASE=@LINUX_VERSION@
@# Remove extraneous build products when packaging
if [ -n "$(DESTDIR)" ]; then \
if [ -n "$(DESTDIR)" ] && [ "$(DONT_DELETE_MODULES_FILES)" != "1" ]; then \
find $(KMODDIR) -name 'modules.*' -delete; \
fi
@# Debian ships tiny fake System.map files that are
@ -106,7 +106,7 @@ modules_install-Linux: modules_uninstall-Linux-legacy
{ [ -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 $$sysmap @LINUX_VERSION@; \
depmod -ae -F $$sysmap @LINUX_VERSION@ -b $(INSTALL_MOD_PATH)/; \
fi
modules_install-FreeBSD: