Make iasl option check work with older versions of iasl.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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Makefile
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Makefile
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@ -221,7 +221,7 @@ $(OUT)vgabios.bin: $(OUT)vgabios.bin.raw tools/buildrom.py
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################ DSDT build rules
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iasl-option=$(shell if "$(1)" "$(2)" -h > /dev/null 2>&1 \
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iasl-option=$(shell if test -z "`$(1) $(2) 2>&1 > /dev/null`" \
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; then echo "$(2)"; else echo "$(3)"; fi ;)
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$(OUT)%.hex: src/%.dsl ./tools/acpi_extract_preprocess.py ./tools/acpi_extract.py
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