Testing for -fstack-usage requires the creation of an output file, which
isn't possible with /dev/null.
Signed-off-by: Tom Rini <tr...@ti.com>
---
Changes for v3:
- Change to use outputing a file but compiling /dev/null
- "isnt" -> "isn't" (both per Mike Frysinger)
---
config.mk | 7 +++----
1 files changed, 3 insertions(+), 4 deletions(-)
diff --git a/config.mk b/config.mk
index ddaa477..596ba93 100644
--- a/config.mk
+++ b/config.mk
@@ -108,13 +108,12 @@ 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_OFILE := $(OBJTREE)/include/generated/cc_test_file.o
-include $(CC_OPTIONS_CACHE_FILE)
-cc-option-sys = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
+cc-option-sys = $(shell mkdir -p $(dir $(CC_TEST_OFILE)); \
+ if $(CC) $(CFLAGS) $(1) -S -xc /dev/null -o $(CC_TEST_OFILE) \
> /dev/null 2>&1; then \
echo 'CC_OPTIONS += $(strip $1)' >> $(CC_OPTIONS_CACHE_FILE); \
echo "$(1)"; fi)
--
1.7.0.4
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