The README instructions for PGI compilation have a typo:
Current context:
- The Portland Group compilers require the "-Msignextend" compiler
flag to extend the sign bit when converting from a shorter to longer
integer. This is is different than other compilers (such as GNU).
When compiling Open MPI with the Portland compiler suite, the
following flags should be passed to Open MPI's configure script:
shell$ ./configure CFLAGS=-Msignextend CXXFLAGS=-signextent \
--with-wrapper-cflags=-Msignextend \
--with-wrapper-cxxflags=-Msignextend ...
This will both compile Open MPI with the proper compile flags and
also automatically add "-Msignextend" when the C and C++ MPI wrapper
compilers are used to compile user MPI applications.
Should be:
shell$ ./configure CFLAGS=-Msignextend CXXFLAGS=-Msignextend \
That fixes the CXXFLAGS definition.
