[mythtv-commits] Ticket #12408: mythtv fails to compile with Gentoo gcc 4.9

MythTV noreply at mythtv.org
Mon Oct 19 02:45:22 UTC 2015

#12408: mythtv fails to compile with Gentoo gcc 4.9
 Reporter:  rich0@…               |          Owner:
     Type:  Bug Report - General  |         Status:  new
 Priority:  minor                 |      Milestone:  unknown
Component:  MythTV - General      |        Version:  0.27-fixes
 Severity:  medium                |     Resolution:
 Keywords:                        |  Ticket locked:  0

Comment (by mike.desimone@…):

 This is odd. It complains about `undefined reference to
 VideoBuffers::StartDisplayingFrame`, but it's right there in the linked-in

 # nm libmythtv-0.27.so | c++filt | grep VideoBuffers::StartDisplayingFrame
 0000000000548000 t VideoBuffers::StartDisplayingFrame()

 I've attached a tarball with the three modified Makefiles. All they do is
 add the aforementioned object files directly to the link line. This is a
 workaround, and not a real fix. This shouldn't be necessary since these
 objects are in the linked libraries. Unless, of course, whatever GCC's
 linker is doing ("devirtualization", I hear) is something it can't do
 across shared library boundaries.

 Let me know if you want anything else tried.

Ticket URL: <https://code.mythtv.org/trac/ticket/12408#comment:9>
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