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Diffstat (limited to 'builddefs/support.mk')
-rw-r--r-- | builddefs/support.mk | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/builddefs/support.mk b/builddefs/support.mk new file mode 100644 index 0000000000..7ef7b9b041 --- /dev/null +++ b/builddefs/support.mk @@ -0,0 +1,11 @@ +# Helper to determine if a compiler option is supported +# Args: +# $(1) = option to test, if successful will be output +# $(2) = option to use if $(1) is not supported +# $(3) = additional arguments to pass to the compiler during the test, but aren't contained in the output +cc-option = $(shell \ + if { echo 'int main(){return 0;}' | $(CC) $(1) $(3) -o /dev/null -x c /dev/null >/dev/null 2>&1; }; \ + then echo "$(1)"; else echo "$(2)"; fi) + +# Helper to pass comma character to make functions (use with `$(,)` to pass in `$(call ...)` arguments) +, := , |