Build system puts Boost include directory before OPAL include directories
The build system puts the Boost include directory before the OPAL include directories. When installing OPAL in the same directory as where boost resides (I know perhaps not the best idea), a new build will give preference to the header files in the install directory. This gives compilation errors when the files are updated.
I was able to fix this by putting the OPAL include directories explicitly before others (see attached patch).
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