Performing C++ SOURCE FILE Test IS_COMPILER_COMPATIBLE failed with the following output:
Change Dir: /var/tmp/portage/sci-libs/ViSP-2.10.0/work/ViSP-2.10.0_build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/gmake" "cmTC_b4606/fast"
/usr/bin/gmake -f CMakeFiles/cmTC_b4606.dir/build.make CMakeFiles/cmTC_b4606.dir/build
gmake[1]: Entering directory '/var/tmp/portage/sci-libs/ViSP-2.10.0/work/ViSP-2.10.0_build/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_b4606.dir/src.cxx.o
/usr/bin/x86_64-pc-linux-gnu-g++  -DCOIN_DLL  -DNDEBUG -march=native -O2 -pipe  -Wall -Wextra -fvisibility=hidden -fPIC -DIS_COMPILER_COMPATIBLE   -o CMakeFiles/cmTC_b4606.dir/src.cxx.o -c /var/tmp/portage/sci-libs/ViSP-2.10.0/work/ViSP-2.10.0_build/CMakeFiles/CMakeTmp/src.cxx
/var/tmp/portage/sci-libs/ViSP-2.10.0/work/ViSP-2.10.0_build/CMakeFiles/CMakeTmp/src.cxx:2:42: fatal error: Inventor/nodes/SoSeparator.h: No such file or directory
   #include <Inventor/nodes/SoSeparator.h>
                                          ^
compilation terminated.
CMakeFiles/cmTC_b4606.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_b4606.dir/src.cxx.o' failed
gmake[1]: *** [CMakeFiles/cmTC_b4606.dir/src.cxx.o] Error 1
gmake[1]: Leaving directory '/var/tmp/portage/sci-libs/ViSP-2.10.0/work/ViSP-2.10.0_build/CMakeFiles/CMakeTmp'
Makefile:126: recipe for target 'cmTC_b4606/fast' failed
gmake: *** [cmTC_b4606/fast] Error 2

Source file was:

  #include <Inventor/nodes/SoSeparator.h>
  int main(){
    SoSeparator *scene = new SoSeparator;
    return 0;
  }