This seems to apply for both the 660_release and the gcc_8_2 builds.

It appears gcc is being built correctly and the build process steps into building libstdc++-v3 libraries.  What appears 
to be happening is when cmath is being included, it is trying to include math.h.

Well, as you know there are numerous versions of math.h sprinkled about in the gcc_8_2 build directory, the /opt/qnx660/
target/qnx6/user/include directory and the /usr/include directory of the host OS (linux in this case).

What I am trying to understand is which math.h should be included when this library is being built?  I suspect this also
 may apply to other header files found in the /opt/qnx660/target/qnx6/usr/include directory.

The build instructions as posted on this site appear to be incomplete.  I did modify the build_hooks file to ensure that
 it was using qnx660, but it seems there may be other things that need updating to get the proper math.h to be included 
with the build.

Any help, suggestions or any other direction is greatly appreciated.

Thank you!

Kevin