Installation issue on Mac: Could not find the program ['arm-none-eabi-strip']

[mehrdadfeller]

# project foxbms (0.5.0) configured on Sat Jul  8 12:34:42 2017 by
# waf 1.8.12 (abi 98, python 2070cf0 on darwin)
# using foxBMS-tools/waf-1.8.12 configure sphinx
#
----------------------------------------
Setting top to
/Users/Mehrdad/Dropbox/BMS/foxBMS-setup
----------------------------------------
Setting out to
/Users/Mehrdad/Dropbox/BMS/foxBMS-setup/build/sphinx
------------------------------------------
Checking for program 'arm-none-eabi-strip'
not found
find program=['arm-none-eabi-strip'] paths=['/usr/local/bin', '/usr/bin', '/bin', '/usr/sbin', '/sbin', '/Users/Mehrdad/Documents/android-sdk-macosx/platform-tools'] var='STRIP' -> None
from /Users/Mehrdad/Dropbox/BMS/foxBMS-setup: Could not find the program ['arm-none-eabi-strip']