Here is the result:
C:\projects\wii>build_boot2
Building..
make: Entering directory `/c/projects/wii/es'
DEP string.d
/bin/sh: /bin/arm-eabi-gcc: No such file or directory
DEP vsprintf.d
/bin/sh: /bin/arm-eabi-gcc: No such file or directory
DEP syscalls.d
DEP main.d
/bin/sh...