[RTEMS Project] #4169: Link problem of C++ tests when using libpci in BSP

[RTEMS trac]

#4169: Link problem of C++ tests when using libpci in BSP
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  Reporter:  Jan Sommer  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  normal      |  Milestone:  5.2
 Component:  lib         |    Version:  5
  Severity:  normal      |   Keywords:
Blocked By:              |   Blocking:
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 When using libpci in a custom BSP we experienced linking problems for C++
 test (e.g. spcxx01).

 The reason is the missing extern C include guards for confdefs/libpci.h.
 Therefore, the reference to pci_config_lib_init is mangled.

 A patch fixing this problem is provided here:
 https://lists.rtems.org/pipermail/devel/2020-October/062981.html

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Ticket URL: <http://devel.rtems.org/ticket/4169>
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