[RTEMS Project] #4917: rtems_waf errors on checking installed BSPs

[RTEMS trac]

#4917: rtems_waf errors on checking installed BSPs
----------------------------+-----------------------
  Reporter:  Utkarsh Verma  |      Owner:  (none)
      Type:  defect         |     Status:  new
  Priority:  normal         |  Milestone:
 Component:  admin          |    Version:  6
  Severity:  normal         |   Keywords:  rtems_waf
Blocked By:                 |   Blocking:
----------------------------+-----------------------
 I did a fresh installation of the `aarch64/raspberrypi4b` BSP on a fresh
 install of RTEMS 6. However, I got an error from `rtems_waf` while
 creating a new app (hello). The logs are attached below, but in summary,
 here is what happens.

 In `$RTEMS_PREFIX/lib/pkgconfig/`, I have three files:

 {{{
 aarch64-rtems6-raspberrypi4b.pc
 expat.pc
 gmp.pc
 }}}

 The `_arch_from_arch_bsp()` function in `rtems_waf/rtems.py` tries to
 infer the arch name based on the file names, by splitting on hyphens. It
 works for BSP names, but not on the other files, therefore the
 `StopIteration` exception is thrown.

 To remedy around that, I modified that function as follows:

 {{{#!python
 def _arch_from_arch_bsp(arch_bsp):
     rtems_index = arch_bsp.find("-rtems")
     if rtems_index == -1:
         return None

     end = arch_bsp.find("-", rtems_index + 1)
     if end == -1:
         return None

     return arch_bsp[:end]
 }}}

 Fixing this function solves the issue resulting in successful compilation.

--
Ticket URL: <http://devel.rtems.org/ticket/4917>
RTEMS Project <http://www.rtems.org/>
RTEMS Project