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acpi: fix build with new iasl compiler 

iasl versions starting with 20120320
(git commit 7fd09d993580e22a096a1b21d2a356d89e702153) enable
a preprocessor by default, which currently strips out
comments from the input. Happily the next release,
20120420, includes an option to disable the preprocessor.
Test and use this option when available.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2012-08-02 21:57:20 +03:00 committed by Kevin O'Connor
parent 008c1fc5bd
commit 4da0725dc3
1 changed files with 4 additions and 1 deletions
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5
Makefile
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@ -221,11 +221,14 @@ $(OUT)vgabios.bin: $(OUT)vgabios.bin.raw tools/buildrom.py
################ DSDT build rules
iasl-option=$(shell if "$(1)" "$(2)" -h > /dev/null 2>&1 \
; then echo "$(2)"; else echo "$(3)"; fi ;)
$(OUT)%.hex: src/%.dsl ./tools/acpi_extract_preprocess.py ./tools/acpi_extract.py
@echo " Compiling IASL $@"
$(Q)cpp -P $< > $(OUT)$*.dsl.i.orig
$(Q)$(PYTHON) ./tools/acpi_extract_preprocess.py $(OUT)$*.dsl.i.orig > $(OUT)$*.dsl.i
$(Q)$(IASL) -vs -l -tc -p $(OUT)$* $(OUT)$*.dsl.i
$(Q)$(IASL) $(call iasl-option,$(IASL),-Pn,) -vs -l -tc -p $(OUT)$* $(OUT)$*.dsl.i
$(Q)$(PYTHON) ./tools/acpi_extract.py $(OUT)$*.lst > $(OUT)$*.off
$(Q)cat $(OUT)$*.off > $@