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| author | Theodore Ts'o <tytso@mit.edu> | 2006-06-22 02:53:09 +0200 |
|---|---|---|
| committer | Sam Ravnborg <sam@mars.ravnborg.org> | 2006-06-24 23:16:45 +0200 |
| commit | ac031f26e89cc04fc7504f31ae137857eb83a051 (patch) | |
| tree | 688a89949e477a0cb12b21b44ace0df03593230d | |
| parent | kbuild: kill some false positives from modpost (diff) | |
| download | linux-ac031f26e89cc04fc7504f31ae137857eb83a051.tar.xz linux-ac031f26e89cc04fc7504f31ae137857eb83a051.zip | |
kbuild: add option for stripping modules while installing them
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: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
| -rw-r--r-- | Documentation/kbuild/makefiles.txt | 8 | ||||
| -rw-r--r-- | Makefile | 17 | ||||
| -rw-r--r-- | scripts/Makefile.modinst | 2 |
3 files changed, 26 insertions, 1 deletions
diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt index a9c00facdf40..14ef3868a328 100644 --- a/Documentation/kbuild/makefiles.txt +++ b/Documentation/kbuild/makefiles.txt @@ -1123,6 +1123,14 @@ The top Makefile exports the following variables: $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE). The user may override this value on the command line if desired. + INSTALL_MOD_STRIP + + If this variable is specified, will cause modules to be stripped + after they are installed. If INSTALL_MOD_STRIP is '1', then the + default option --strip-debug will be used. Otherwise, + INSTALL_MOD_STRIP will used as the option(s) to the strip command. + + === 8 Makefile language The kernel Makefiles are designed to run with GNU Make. The Makefiles @@ -512,6 +512,23 @@ export INSTALL_PATH ?= /boot MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) export MODLIB +# +# INSTALL_MOD_STRIP, if defined, will cause modules to be +# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then +# the default option --strip-debug will be used. Otherwise, +# INSTALL_MOD_STRIP will used as the options to the strip command. + +ifdef INSTALL_MOD_STRIP +ifeq ($(INSTALL_MOD_STRIP),1) +mod_strip_cmd = $STRIP) --strip-debug +else +mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) +endif # INSTALL_MOD_STRIP=1 +else +mod_strip_cmd = true +endif # INSTALL_MOD_STRIP +export mod_strip_cmd + ifeq ($(KBUILD_EXTMOD),) core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ diff --git a/scripts/Makefile.modinst b/scripts/Makefile.modinst index 2686dd5dce8c..f0ff248f5e6f 100644 --- a/scripts/Makefile.modinst +++ b/scripts/Makefile.modinst @@ -17,7 +17,7 @@ __modinst: $(modules) @: quiet_cmd_modules_install = INSTALL $@ - cmd_modules_install = mkdir -p $(2); cp $@ $(2) + 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 |