make: *** No rule to make target 'qemu_csky_ck807_uclibc_bt_defconfig'. Stop.

[sanderjo]

I get

sander@sammie:~/git/buildroot$ make qemu_csky_ck807_uclibc_bt_defconfig
make: *** No rule to make target 'qemu_csky_ck807_uclibc_bt_defconfig'.  Stop.

... how can I solve that?

Ubuntu 18.10 64-bit

sander@sammie:~/git$ git clone https://github.com/c-sky/buildroot.git
Cloning into 'buildroot'...
remote: Enumerating objects: 276537, done.
remote: Total 276537 (delta 0), reused 0 (delta 0), pack-reused 276537
Receiving objects: 100% (276537/276537), 63.02 MiB | 3.93 MiB/s, done.
Resolving deltas: 100% (192848/192848), done.
sander@sammie:~/git$ cd buildroot/

sander@sammie:~/git/buildroot$ make qemu_csky_ck807_uclibc_bt_defconfig
make: *** No rule to make target 'qemu_csky_ck807_uclibc_bt_defconfig'.  Stop.

sander@sammie:~/git/buildroot$ ll Makefile
-rw-r--r-- 1 sander sander 41379 nov 12 19:58 Makefile

sander@sammie:~/git/buildroot$ grep qemu_csky_ck807_uclibc_bt_defconfig Makefile
sander@sammie:~/git/buildroot$