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qemu build failure, hxtool is a bash script, not a /bin/sh script
hxtool (part of the early build process) is a bash script. Running it with /bin/sh yields a syntax error on line 10:
10 STEXI*|ETEXI*|SQMP*|EQMP*) flag=$(($flag^1))
$(( expr )) is a bash extension, not part of /bin/sh.
Note that replacing the sh in the first line in hxtool with /bin/bash does not help, because the script is run manually from the Makefile with sh:
154 $(call quiet-command,sh $(SRC_PATH)/scripts/hxtool -h < $< > $@," GEN $@")
The fix is to change those lines to
154 $(call quiet-command,bash $(SRC_PATH)/scripts/hxtool -h < $< > $@," GEN $@")
(there are five or so).
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