path: root/scripts/Kbuild.include
diff options
authorMasahiro Yamada <yamada.masahiro@socionext.com>2019-03-01 16:10:21 +0900
committerMasahiro Yamada <yamada.masahiro@socionext.com>2019-03-04 22:34:59 +0900
commitd3a918c659ed0998ac668de3973e81bab81dde74 (patch)
tree31f247bad04c26b04ed824cec7d3ada47d2bba1e /scripts/Kbuild.include
parentkbuild: update comment block of scripts/clang-version.sh (diff)
kbuild: remove cc-version macro
There is no more direct user of this macro; it is only used by cc-ifversion. Calling this macro is not efficient since it invokes the compiler to get the compiler version. CONFIG_GCC_VERSION is already calculated in the Kconfig stage, so Makefile can reuse it. Here is a note about the slight difference between cc-version and CONFIG_GCC_VERSION: When using Clang, cc-version is evaluated to '0402' because Clang defines __GNUC__ and __GNUC__MINOR__, and looks like GCC 4.2 in the version point of view. On the other hand, CONFIG_GCC_VERSION=0 when $(CC) is clang. There are currently two users of cc-ifversion: arch/mips/loongson64/Platform arch/powerpc/Makefile They are not affected by this change. The format of cc-version is <major><minor>, while CONFIG_GCC_VERSION <major><minor><patch>. I adjusted cc-ifversion for the difference of the number of digits. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'scripts/Kbuild.include')
1 files changed, 1 insertions, 4 deletions
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index c1e15a4aee36..7484b9d8272f 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -134,12 +134,9 @@ cc-option-yn = $(call try-run,\
cc-disable-warning = $(call try-run,\
$(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -W$(strip $(1)) -c -x c /dev/null -o "$$TMP",-Wno-$(strip $(1)))
-# cc-version
-cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh $(CC))
# cc-ifversion
# Usage: EXTRA_CFLAGS += $(call cc-ifversion, -lt, 0402, -O1)
-cc-ifversion = $(shell [ $(cc-version) $(1) $(2) ] && echo $(3) || echo $(4))
+cc-ifversion = $(shell [ $(CONFIG_GCC_VERSION)0 $(1) $(2)000 ] && echo $(3) || echo $(4))
# cc-ldoption
# Usage: ldflags += $(call cc-ldoption, -Wl$(comma)--hash-style=both)