6a61b70b43
CONFIG_GCOV_FORMAT_AUTODETECT compiles either gcc_3_4.c or gcc_4_7.c according to your GCC version. We can achieve the equivalent behavior by setting reasonable dependency with the knowledge of the compiler version. If GCC older than 4.7 is used, GCOV_FORMAT_3_4 is the default, but users are still allowed to select GCOV_FORMAT_4_7 in case the newer format is back-ported. On the other hand, If GCC 4.7 or newer is used, there is no reason to use GCOV_FORMAT_3_4, so it should be hidden. If you downgrade the compiler to GCC 4.7 or older, oldconfig/syncconfig will display a prompt for the choice because GCOV_FORMAT_3_4 becomes visible as a new symbol. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Reviewed-by: Kees Cook <keescook@chromium.org>
7 lines
206 B
Makefile
7 lines
206 B
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
ccflags-y := -DSRCTREE='"$(srctree)"' -DOBJTREE='"$(objtree)"'
|
|
|
|
obj-y := base.o fs.o
|
|
obj-$(CONFIG_GCOV_FORMAT_3_4) += gcc_3_4.o
|
|
obj-$(CONFIG_GCOV_FORMAT_4_7) += gcc_4_7.o
|