Build full-static LLVM tools binaries

[shenhanc78]

Previously, the binaries built when ENABLE_TOOL=LLVM are all dynamically linked, there are many .so dependencies that prevent the tool binaries from be deployed to other systems.

The change is also required when building release binaries.

After this change, the create_llvm_prof and other tools binaries will be fully static linked.

[xur-llvm]

Do we need to describe somewhere that the binary built will be statically linked?

[snehasish]

nit: It's not a fully static link and still depends on some basic shared libraries. Update the description to e.g. "Minimize shared libs ..." and so on?

Also for the future we could introduce a check in the CI which dumps the list of shared libs and expects that to be <= 7 (based on the commit description). What do you think?

[shenhanc78]

nit: It's not a fully static link and still depends on some basic shared libraries. Update the description to e.g. "Minimize shared libs ..." and so on?

Done changing the PR title.

Also for the future we could introduce a check in the CI which dumps the list of shared libs and expects that to be <= 7 (based on the commit description). What do you think?

Sounds good, we can add the check in the CI action.

[snehasish]

LGTM.

Sounds good, we can add the check in the CI action.

Ok with me to add in a follow up if you want.

[xur-llvm]

Why can't we build fully static binary? too many changes?

[shenhanc78]

Why can't we build fully static binary? too many changes?

Yes we can. Experimented, and found that I can force a full static build adding "-static" to the linking command. Updated. PTAL.

[xur-llvm]

LGTM