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Rodrigo Campos
b6a0c483b7
When we added nolibc, we started using it unconditionally. But runc is currently being compiled on more arches than supported by nolibc, like MIPS. Let's compile using stdlib if the arch we are compiling on is not supported by nolibc. If compilation is broken in some arch, just removing it from the NOLIBC_GOARCHES variable should fix the compilation, as it will fallback to use the C stdlib. Signed-off-by: Rodrigo Campos <rodrigoca@microsoft.com>
Runc-dmz
runc-dmz is a small and very simple binary used to execute the container's entrypoint.
Making it small
To make it small we use the Linux kernel's nolibc include files, so we don't use the libc.
A full cp of it is here in nolibc/, but removing the Makefile that is GPL. DO NOT FORGET to
remove the GPL code if updating the nolibc/ directory.
The current version in that folder is from Linux 6.6-rc3 tag (556fb7131e03b0283672fb40f6dc2d151752aaa7).
It also support all the architectures we support in runc.
If the GOARCH we use for compiling doesn't support nolibc, it fallbacks to using the C stdlib.