[MacPorts] #64442: bazel build points to builder directory _opt_bblocal_var_buildworker_ports_build_ports_devel_bazel

[MacPorts]

#64442: bazel build points to builder directory
_opt_bblocal_var_buildworker_ports_build_ports_devel_bazel
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  Reporter:  essandess                      |      Owner:  missa-prime
      Type:  defect                         |     Status:  assigned
  Priority:  Normal                         |  Milestone:
 Component:  ports                          |    Version:  2.7.1
Resolution:                                 |   Keywords:
      Port:  bazel, py-tensorflow-metadata  |
--------------------------------------------+-------------------------
Changes (by ryandesign):

 * status:  new => assigned
 * owner:  (none) => missa-prime


Comment:

 The replacement of the unqualified "clang" and "clang++" in
 wrapped_clang.cc with their full paths is being performed by the bazel 1.0
 portgroup. The bazel 1.0 portgroup also requests the use of the
 compiler_wrapper 1.0 portgroup, thus the full compiler paths are to
 temporary wrapper scripts that are only valid for the duration of the port
 build. The "bazel/bazel-3.7" part of the path you showed tells us this
 path was generated while building the bazel-3.7 subport of the bazel port;
 this path must be baked into the files installed by bazel-3.7 somewhere,
 though I also cannot find it.

 Regardless what compiler path is baked into bazel-3.7, it is wrong that
 py-tensorflow-metadata is trying to use it. Ports must
 [wiki:UsingTheRightCompiler use the compiler MacPorts tells them to use].
 However, given all the other problems we already know about with bazel, it
 would not surprise me if bazel makes it impossible to use the right
 compiler. If that's the case, then bazel must not bake temporary compiler
 paths into itself; it should bake in paths to compilers that are
 guaranteed to exist, like /usr/bin/cc and /usr/bin/c++.

-- 
Ticket URL: <https://trac.macports.org/ticket/64442#comment:2>
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