Make profiling

[lrvick]

make reproduce and make now automatically call otherwise optional toolchain-profile target that displays wall clock build times for all targets, and logs it to a file under .toolchain/profiles

[lrvick]

local make reproduce output:

Success: out and dist are identical
Build times:
- toolchain-clean                                                                   00:00:00
- cache/toolchain.tgz                                                               00:01:17
- cache/toolchain.state                                                             00:00:08
- cache/aws/x86_64/rust-libstd-musl.tgz                                             00:12:49
- cache/aws/x86_64/lib/rustlib/x86_64-unknown-linux-musl/lib/self-contained/libc.a  00:00:00
- cache/aws/x86_64/init                                                             00:00:01
- cache/aws/x86_64/src/linux-5.19.6/Makefile                                        00:00:20
- cache/aws/x86_64/src/aws-nitro-enclaves-sdk-bootstrap                             00:00:05
- cache/aws/x86_64/nsm.ko                                                           00:06:12
- cache/bin/gen_init_cpio                                                           00:00:00
- cache/bin/gen_initramfs.sh                                                        00:00:00
- cache/aws/x86_64/rootfs.cpio                                                      00:00:00
- cache/aws/x86_64/bzImage                                                          00:00:06
- cache/bin/eif_build                                                               00:00:00
- out/aws-x86_64.eif                                                                00:00:06
- cache/aws/x86_64/src/pcsc                                                         00:00:06
- cache/aws/x86_64/lib/libpcsclite.a                                                00:00:14
- out/qos_client.linux-x86_64                                                       00:01:35
- out/qos_host.linux-x86_64                                                         00:01:21
- cache/aws/x86_64/src/openssl                                                      00:00:55
- cache/aws/x86_64/libssl-static.tgz                                                00:06:30
- cache/aws/x86_64/lib64/libssl.a                                                   00:00:00
- out/qos_enclave.linux-x86_64                                                      00:00:01
- out/qos_host.oci.x86_64.tar                                                       00:00:01
- out/qos_host.x86_64.tar                                                           00:00:00
- out/qos_enclave.oci.x86_64.tar                                                    00:00:01
- out/qos_enclave.x86_64.tar                                                        00:00:00
- out/qos_client.oci.x86_64.tar                                                     00:00:00
- out/qos_client.x86_64.tar                                                         00:00:00
Total: 00:32:10

outdated

[lrvick]

mac users can test a reduced build set with:

time make TOOLCHAIN_REPRODUCE=true toolchain-clean toolchain-restore-mtime toolchain out/aws-x86_64.eif toolchain-profile

[lrvick]

was tested manually by @jack-kearney