• Theodore Ts'o's avatar
    kbuild: add option for stripping modules while installing them · ac031f26
    Theodore Ts'o authored
    
    Add option for stripping modules while installing them.
    
    This function adds support for stripping modules while they are being
    installed.  CONFIG_DEBUG_KERNEL (which will probably become more
    popular as developers use kdump) causes the size of the installed
    modules to grow by a factor of 9 or so.
    
    Some kernel package systems solve this problem by stripping the debug
    information from /lib/modules after running "make modules_install",
    but that may not work for people who are installing directly into
    /lib/modules --- root partitions that were sized to handle 16 megs
    worth of modules may not be quite so happy with 145 megs of modules,
    so the "make modules_install" never succeeds.
    
    This patch allows such users to request modules_install to strip the
    modules as they are installed.
    Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
    Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
    ac031f26
Makefile.modinst 1 KB
# ==========================================================================
# Installing modules
# ==========================================================================

PHONY := __modinst
__modinst:

include scripts/Kbuild.include

#

__modules := $(sort $(shell grep -h '\.ko' /dev/null $(wildcard $(MODVERDIR)/*.mod)))
modules := $(patsubst %.o,%.ko,$(wildcard $(__modules:.ko=.o)))

PHONY += $(modules)
__modinst: $(modules)
	@:

quiet_cmd_modules_install = INSTALL $@
      cmd_modules_install = mkdir -p $(2); cp $@ $(2) ; $(mod_strip_cmd) $(2)/$(notdir $@)

# Modules built outside the kernel source tree go into extra by default
INSTALL_MOD_DIR ?= extra
ext-mod-dir = $(INSTALL_MOD_DIR)$(subst $(KBUILD_EXTMOD),,$(@D))

modinst_dir = $(if $(KBUILD_EXTMOD),$(ext-mod-dir),kernel/$(@D))

$(modules):
	$(call cmd,modules_install,$(MODLIB)/$(modinst_dir))


# Declare the contents of the .PHONY variable as phony.  We keep that
# information in a variable se we can use it in if_changed and friends.

.PHONY: $(PHONY)