/usr/bin/env: python: No such file or directory
Oh, yes. You need to make sure Python is installed and available to your shell if you want to upload using the Maple bootloader. Since you said you wanted to use JTAG, you won't be using make install -- you'll be using the upload mechanism supported by your JTAG dongle and JTAG driver software.
Be sure to check out the wiki's JTAG howto:
http://wiki.leaflabs.com/index.php?title=Maple_JTAG_How_To
Make sure that when you build your program, you have MEMORY_TARGET=jtag. Do that like this:
$ make jtag
(Instead of just saying make
). The ELF binary you can use for uploading is build/maple.elf. The corresponding binary version (the raw, bare-metal binary you can copy directly to address 0x0) is build/maple.bin.