17c568d60a
Compile the correct gcov implementation file for the specific gcc version. Signed-off-by: Frantisek Hrbata <fhrbata@redhat.com> Cc: Jan Stancek <jstancek@redhat.com> Cc: Kees Cook <keescook@chromium.org> Acked-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Andy Gospodarek <agospoda@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
33 lines
1.2 KiB
Makefile
33 lines
1.2 KiB
Makefile
ccflags-y := -DSRCTREE='"$(srctree)"' -DOBJTREE='"$(objtree)"'
|
|
|
|
# if-lt
|
|
# Usage VAR := $(call if-lt, $(a), $(b))
|
|
# Returns 1 if (a < b)
|
|
if-lt = $(shell [ $(1) -lt $(2) ] && echo 1)
|
|
|
|
ifeq ($(CONFIG_GCOV_FORMAT_3_4),y)
|
|
cc-ver := 0304
|
|
else ifeq ($(CONFIG_GCOV_FORMAT_4_7),y)
|
|
cc-ver := 0407
|
|
else
|
|
# Use cc-version if available, otherwise set 0
|
|
#
|
|
# scripts/Kbuild.include, which contains cc-version function, is not included
|
|
# during make clean "make -f scripts/Makefile.clean obj=kernel/gcov"
|
|
# Meaning cc-ver is empty causing if-lt test to fail with
|
|
# "/bin/sh: line 0: [: -lt: unary operator expected" error mesage.
|
|
# This has no affect on the clean phase, but the error message could be
|
|
# confusing/annoying. So this dummy workaround sets cc-ver to zero if cc-version
|
|
# is not available. We can probably move if-lt to Kbuild.include, so it's also
|
|
# not defined during clean or to include Kbuild.include in
|
|
# scripts/Makefile.clean. But the following workaround seems least invasive.
|
|
cc-ver := $(if $(call cc-version),$(call cc-version),0)
|
|
endif
|
|
|
|
obj-$(CONFIG_GCOV_KERNEL) := base.o fs.o
|
|
|
|
ifeq ($(call if-lt, $(cc-ver), 0407),1)
|
|
obj-$(CONFIG_GCOV_KERNEL) += gcc_3_4.o
|
|
else
|
|
obj-$(CONFIG_GCOV_KERNEL) += gcc_4_7.o
|
|
endif
|