I also modified the CMake and pkgconfig files to append the _POSTFIX extenstion based on the CMAKE_BUILD_TYPE.
Additionally I fixed packaging/ld.so.conf.d/openscenegraph.conf.in to add a '/' betweeen the arguments since the CMAKE_INSTALL_PREFIX can't end with a '/'.
"
platform:
1 - osgAnimation/StatsHandler includes <cmath>, but on Cygwin only std::isnan
is defined that way. I changed it to <math.h> as it is done in the rest of
the OSG.
2 - Pulling some osgViewer headers from the same file in osgAnimation makes
the former a new dependency. Thus, I got errors at osgAnimation linking time.
I wonder why nobody noticed this on other platforms. I have updated the
CMakeLists.txt file in order to link to the needed libraries, and
3 - I have updated the openscenegraph-osgAnimation.pc.in file accordingly."