To whoever updates the osmocom wiki:
This page: http://osmocom.org/projects/quectel-modems/wiki/Qualcomm_OE_MSM
seems to complain about "forward-slashes in the CFLAGS ?!?"
code:
export EXTRA_CFLAGS="${CFLAGS/Os/O2}"
This syntax is a bash shell substitution construct that replaces "Os" with "O2" in CFLAGS, result in EXTRA_CFLAGS. Probably to adapt to a flavor of gcc.
Maybe that busybox was not compiled with the bash compatibility option?
Regards,
Jean-Pierre