support runtime/test-time compiler invokations

[TroyKomodo]

This commit changes the cc_wrapper.sh script to allow for it to find paths when invoked at runtime with runfiles as apposed to strictly using build-rule invokes.

fixes #517
Work towards buildbuddy-io/bazel_env.bzl#51

[TroyKomodo]

I based this pr off v1.4.0 because for some reason using the master does not build on my project

[TroyKomodo]

Do you have any idea why tests fail in ci? They seem to pass locally when running tests/scripts/run_tests.sh.

[fmeum]

One failing test is trunk check, which runs shellcheck. Some of the other tests are somewhat delicate as they may depend on host deps.

[TroyKomodo]

One failing test is trunk check, which runs shellcheck. Some of the other tests are somewhat delicate as they may depend on host deps.

Should be good I think

[fmeum]

@TroyKomodo Could you rebase onto master and ping me for the final approval?

[TroyKomodo]

@fmeum I have rebased, the one issue with master vs 1.4.0 is it seems my project fails to build on master.

[fmeum]

Can you bisect this down to a breaking commit? Feel free to share the error, maybe I know what's up.

Thanks for the PR in any case!

[TroyKomodo]

Can you bisect this down to a breaking commit? Feel free to share the error, maybe I know what's up.

Thanks for the PR in any case!

INFO: Repository toolchains_llvm++llvm+llvm_toolchain_llvm instantiated at:
  <builtin>: in <toplevel>
Repository rule llvm defined at:
  /home/troy/.cache/bazel/_bazel_troy/f0307b93a4e15de94d1739eb6cc8c44a/external/toolchains_llvm+/toolchain/rules.bzl:27:23: in <toplevel>
ERROR: /home/troy/.cache/bazel/_bazel_troy/f0307b93a4e15de94d1739eb6cc8c44a/external/toolchains_llvm+/toolchain/internal/llvm_distributions.bzl:720:5: An error occurred during the fetch of repository 'toolchains_llvm++llvm+llvm_toolchain_llvm':
   Traceback (most recent call last):
        File "/home/troy/.cache/bazel/_bazel_troy/f0307b93a4e15de94d1739eb6cc8c44a/external/toolchains_llvm+/toolchain/internal/repo.bzl", line 330, column 35, in llvm_repo_impl
                updated_attrs = _download_llvm(rctx)
        File "/home/troy/.cache/bazel/_bazel_troy/f0307b93a4e15de94d1739eb6cc8c44a/external/toolchains_llvm+/toolchain/internal/llvm_distributions.bzl", line 745, column 37, in download_llvm
                strip_prefix = _strip_prefix(_distribution_basename(urls[0]))
        File "/home/troy/.cache/bazel/_bazel_troy/f0307b93a4e15de94d1739eb6cc8c44a/external/toolchains_llvm+/toolchain/internal/llvm_distributions.bzl", line 720, column 5, in _strip_prefix
                def _strip_prefix(*, basename, strip_suffix = ""):
Error: _strip_prefix() does not accept positional arguments, but got 1
ERROR: no such package '@@toolchains_llvm++llvm+llvm_toolchain_llvm//': _strip_prefix() does not accept positional arguments, but got 1
ERROR: /home/troy/.cache/bazel/_bazel_troy/f0307b93a4e15de94d1739eb6cc8c44a/external/toolchains_llvm++llvm+llvm_toolchain/BUILD.bazel:156:10: @@toolchains_llvm++llvm+llvm_toolchain//:strip-files-x86_64-linux depends on @@toolchains_llvm++llvm+llvm_toolchain_llvm//:strip in repository @@toolchains_llvm++llvm+llvm_toolchain_llvm which failed to fetch. no such package '@@toolchains_llvm++llvm+llvm_toolchain_llvm//': _strip_prefix() does not accept positional arguments, but got 1
ERROR: Analysis of target '//crates/av1:av1' failed; build aborted: Analysis failed
INFO: Elapsed time: 3.887s, Critical Path: 0.13s
INFO: 6 processes: 28 action cache hit, 6 internal.
ERROR: Build did NOT complete successfully

[fmeum]

Cc @helly25