Commands for setting up MSP430 toolchain in gentoo

gistfile1.txt

emerge crossdev
mkdir /usr/local/portage
add PORTDIR_OVERLAY="/usr/local/portage" to /etc/make.conf
mv /etc/portage/package.env /etc/portage/package.env.bak
mkdir /etc/portage/package.env
mv /etc/portage/package.env.bak /etc/portage/package.env/x86_64-pc-linux-gnu
crossdev  -s4 -t msp430 #stage 4 will build gcc, libc, and binutils
#This will also create: /usr/msp430/etc/portage/make.conf
crossdev --ex-only --ex-gdb -t msp430 #just cross compile gdb
emerge mspdebug

msp430-gcc  -mmcu=msp430g2553  blink.c

#Run the debugger to load the code onto mcu
sudo mspdebug rf2500

Press Ctrl+D to quit.
(mspdebug) prog a.out
hit Ctrl+D to quit
the mcu will start executing code, in this case blinking LED1, 
LED2 is attached to P1.6