[PATCH v2 2/2] kbuild: Cache a few more calls to the compiler

From: Douglas Anderson
Date: Wed Oct 04 2017 - 18:38:36 EST

These are a few stragglers that I left out of the original patch to
cache calls to the C compiler ("kbuild: Add a cache for generated
variables") because they bleed out into the main Makefile and thus
uglify things a little bit. The idea is the same here, though.

Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>

Changes in v2:
- Abstract at a different level (like shell-cached) per Masahiro Yamada

Makefile | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index d1119941261c..d366bdc3da04 100644
--- a/Makefile
+++ b/Makefile
@@ -652,7 +652,7 @@ KBUILD_CFLAGS += $(call cc-ifversion, -lt, 0409, \
KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)

# check for 'asm goto'
-ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
+ifeq ($(call shell-cached,$(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC) $(KBUILD_CFLAGS)), y)
@@ -788,7 +788,7 @@ KBUILD_CFLAGS += $(call cc-option,-fdata-sections,)

# arch Makefile may override CC so keep this after arch Makefile is included
-NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
+NOSTDINC_FLAGS += -nostdinc -isystem $(call shell-cached,$(CC) -print-file-name=include)

# warn about C99 declaration after statement