Hi Alan,
> -----Original Message-----
> From: Alan W. Irwin [mailto:ir...@beluga.phys.uvic.ca]
>
> The first error message for the case of the traditional build of the f95
> examples when
> PLplot was statically built was as follows:
>
> /cygdrive/d/plplot-
> svn/comprehensive_test_disposeable/static/install_tree/lib/libplplot.a(qt.cpp.o):qt.cpp
> :(.text+0x5cc0):
> undefined reference to std::ios_base::Init::Init()'
>
> std refers to symbols in the special library that the C++ compiler normally
> adds to the
> linking information (in this case the libstdc++ library that is associated
> with g++, but
> the name/location/version of that library might depend on which C++ compiler
> the
> user decides to use). Of course, in this case we must link the Fortran
> examples with
> a Fortran compiler for the traditional build system for the installed example.
> Therefore, there is a linking error here because libstdc++ is obviously not
> automatically linked in by gfortran. There are also similar potential
> problems for
> other non-C or C++ examples that are compiled.
>
Ah, that is indeed a familiar problem. If I understand it correctly, then C++
code requires a linker with libraries suitable for C++. Of course Fortran and
other languages require their own libraries and it is usually the compiler (or
the driver program) that adds the appropriate ones to the link step. One can
get around this problem by explicitly supplying these libraries, but that is
very much compiler-specific and even configuration-specific (for instance:
under Windows the libraries for a debuggable program tend to be different than
those for a release program).
I will give this new set-up a try. Since it is the computer which does most
work, it should not be that time-consuming for me.
Regards,
Arjen
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