commit 51755c3b5ed9dcdfdef8cee56631d68642bde416
author Kevin O'Connor <kevin@koconnor.net> Wed Aug 29 21:27:37 2012 -0400
committer Kevin O'Connor <kevin@koconnor.net> Wed Aug 29 21:32:08 2012 -0400
tree 429204572ed97e26c9115897368c16c430a64acc
parent 7a39e72d86326d30b4caaf8d6244967e3ca8adad

Make iasl option check work with older versions of iasl.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

Makefile

diff --git a/Makefile b/Makefile
index 72ee152..45ea48a 100644
--- a/Makefile
+++ b/Makefile
@@ -221,7 +221,7 @@
 
 ################ DSDT build rules
 
-iasl-option=$(shell if "$(1)" "$(2)" -h > /dev/null 2>&1 \
+iasl-option=$(shell if test -z "`$(1) $(2) 2>&1 > /dev/null`" \
     ; then echo "$(2)"; else echo "$(3)"; fi ;)
 
 $(OUT)%.hex: src/%.dsl ./tools/acpi_extract_preprocess.py ./tools/acpi_extract.py