Testing for -fstack-usage requires the creation of an output file, which isnt possible with /dev/null.
Signed-off-by: Tom Rini trini@ti.com --- config.mk | 10 +++++----- 1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/config.mk b/config.mk index ddaa477..519bc1b 100644 --- a/config.mk +++ b/config.mk @@ -108,14 +108,14 @@ HOSTCFLAGS += -pedantic # only supported compiler options are used # CC_OPTIONS_CACHE_FILE := $(OBJTREE)/include/generated/cc_options.mk - -$(if $(wildcard $(CC_OPTIONS_CACHE_FILE)),,\ - $(shell mkdir -p $(dir $(CC_OPTIONS_CACHE_FILE)))) +CC_TEST_FILE := $(OBJTREE)/include/generated/cc_test_file.c
-include $(CC_OPTIONS_CACHE_FILE)
-cc-option-sys = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \ - > /dev/null 2>&1; then \ +cc-option-sys = $(shell mkdir -p $(dir $(CC_TEST_FILE)); \ + touch $(CC_TEST_FILE); \ + if $(CC) $(CFLAGS) $(1) -S -o $(CC_TEST_FILE) \ + -xc $(CC_TEST_FILE) > /dev/null 2>&1; then \ echo 'CC_OPTIONS += $(strip $1)' >> $(CC_OPTIONS_CACHE_FILE); \ echo "$(1)"; fi)