[eq-dev] Linux v1.10 build with opencv (-qt4)

[ben simons]

Hi,

We're running gentoo linux, and just built Equalizer v1.10. During the
build, there was this error:

[ 89%] Creating eqPly kd-Tree for rockerArm.ply
/bin/sh: line 1: 17713 Segmentation fault ../../bin/eqPlyConverter
/touro/dev/equalizer/v1.10/examples/eqPly/rockerArm.ply
examples/eqPly/CMakeFiles/rockerArm.ply.le64.bin.dir/build.make:58: recipe
for target 'examples/eqPly/CMakeFiles/rockerArm.ply.le64.bin' failed
make[2]: *** [examples/eqPly/CMakeFiles/rockerArm.ply.le64.bin] Error 139
CMakeFiles/Makefile2:17249: recipe for target
'examples/eqPly/CMakeFiles/rockerArm.ply.le64.bin.dir/all' failed
make[1]: *** [examples/eqPly/CMakeFiles/rockerArm.ply.le64.bin.dir/all]
Error 2

It turns out eqPlyConverter (which is run during the build) would Segv (see
above). Darren Lee traced it and found eqPlyConverter linked with opencv.
The current version of opencv (media-libs/opencv-2.4.9:0/2.4) builds with
qt4 by default. To successfully compile, opencv can be emerged without qt4.
Then Equalizer builds successfully.

ie: if you're running gentoo linux, put this line in
/etc/portage/package.use

>=media-libs/opencv-2.4.9 -qt4

and then "emerge opencv" again (this will build opencv without qt4).
Another alternative might be to build equalizer without opencv - but then
there's no opencv.. (?)

HTH,
ben.




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