ad7a953c52
This patch changes the way __crc_ symbols are being resolved from using ld to do so to using the assembler, thus allowing these symbols to be marked local (the linker creates then as global ones) and hence allow stripping (for modules) or ignoring (for vmlinux) them. While at this, also strip other generated symbols during module installation. One potentially debatable point is the handling of the flags passeed to gcc when translating the intermediate assembly file into an object: passing $(c_flags) unchanged doesn't work as gcc passes --gdwarf2 to gas whenever is sees any -g* option, even for -g0, and despite the fact that the compiler would have already produced all necessary debug info in the C->assembly translation phase. I took the approach of just filtering out all -g* options, but an alternative to such negative filtering might be to have a positive filter which might, in the ideal case allow just all the -Wa,* options to pass through. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
37 lines
1.0 KiB
Makefile
37 lines
1.0 KiB
Makefile
# ==========================================================================
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# Installing modules
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# ==========================================================================
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PHONY := __modinst
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__modinst:
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include scripts/Kbuild.include
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#
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__modules := $(sort $(shell grep -h '\.ko' /dev/null $(wildcard $(MODVERDIR)/*.mod)))
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modules := $(patsubst %.o,%.ko,$(wildcard $(__modules:.ko=.o)))
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PHONY += $(modules)
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__modinst: $(modules)
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@:
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quiet_cmd_modules_install = INSTALL $@
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cmd_modules_install = mkdir -p $(2); \
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$(mod_strip_cmd) $@ $(2)/$(notdir $@) || cp $@ $(2)
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# Modules built outside the kernel source tree go into extra by default
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INSTALL_MOD_DIR ?= extra
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ext-mod-dir = $(INSTALL_MOD_DIR)$(subst $(patsubst %/,%,$(KBUILD_EXTMOD)),,$(@D))
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modinst_dir = $(if $(KBUILD_EXTMOD),$(ext-mod-dir),kernel/$(@D))
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$(modules):
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$(call cmd,modules_install,$(MODLIB)/$(modinst_dir))
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# Declare the contents of the .PHONY variable as phony. We keep that
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# information in a variable se we can use it in if_changed and friends.
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.PHONY: $(PHONY)
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