Issue:
hxedapl compilation was failing because missing of dapl library.
Solution:
Enable conditional compilation of hxedapl binary.
In Makefile, it checks the dat2 (dapl) library file is existing on build system, then accordingly it decides to add hexdapl for compilation.
Back ground: This change is to resolve git issue: https://github.com/open-power/HTX/issues/160 (HTX does not build on standard RHEL 8 #160)
Issue: hxedapl compilation was failing because missing of dapl library.
Solution: Enable conditional compilation of hxedapl binary. In Makefile, it checks the dat2 (dapl) library file is existing on build system, then accordingly it decides to add hexdapl for compilation.