[MacPorts] #69480: llvm-17 fails to build agains port:legacy-support=1.1.1 when the latter is build with -flto

[MacPorts]

#69480: llvm-17 fails to build agains port:legacy-support=1.1.1 when the latter is
build with -flto
-----------------------------+--------------------
  Reporter:  RJVB            |      Owner:  (none)
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:
Resolution:                  |   Keywords:
      Port:  legacy-support  |
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Comment (by RJVB):

 Sorry, no, I moved on to other things since I had a workaround (and
 llvm-17 turns out to be barely useable for me anyway). You must have
 sensed though that I was planning to update my legacy-support install
 (with the tiny hope that'll fix `go` from crashing systematically).

 Do you have any interest in knowing whether building the components of the
 static library with `-fPIC` fixes the issue (supposing it persists
 otherwise)? As I implied above, that ''should'' allow you to simplify the
 buildsystem and reduce the build time; compile everything once, `$(AR)`
 the static library and then invoke `$(CC)` (or `$(CXX)`) to link that
 archive into a shared library.

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Ticket URL: <https://trac.macports.org/ticket/69480#comment:10>
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