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12 May 1995:
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The GNU's dynamic loader, dld. supports Convex C2, C3 and C4 series
machines.
* The library is built with Convex's optimizing C compiler (cc) with
IEEE floating point representation. Note that it was not built with
gcc! Using Convex's C compiler allows for vectorization and
parallelization of code that gcc does not support. The makefiles used
by Convex C-Series are named Makefile.convex (source and test
directories).
make -f Makefile.convex
* This package was NOT ported with the -pcc flag. This may be of no
consequence, but you should be aware of it.
* The relocatables built with the Convex compilers (cc and fc) are in
SOFF format (an extended COFF structure).
* Sources depend upon _CONVEX_SOURCE being set (which is automatically
done by Convex cc.
* Although the sources here pass the test suites, it's not guaranteed
to be bug free. To maintain coherency, please send bugs to
isom@convex.com along with a test case. The initial port was done
with version 3.2.3 and has been operational since the summer of 1993
without problems. No real testing has been performed with the C++
interface.
* Due to the way Convex handles relocation information (see Compiler
Utilities Guide for details), sharing of objects may be minimal. For
best results, unloading is encouraged.
* Dynamic loading of FORTRAN objects with initialized common is not
recommended. In fact dld will crash upon recognition of initialized
common. There are plans to provide this support in the future.
* Whether you are using the Convex FORTRAN (fc) or C (cc) compiler to
link in dld, it is necessary to maintain the order in which the
compiler searchs the libraries. To output the order of the libraries,
execute the following command with the compiler options and user
specified libraries used to build your application:
%fc <compiler options> +dvo +dvo foo.f <user specified libraries>
Note 1: the +dvo compiler option is an undocumented and unsupported
option; therefore, it may not always be available.
Note 2: As of 12 May 1995, there are two (2) libraries in /usr/lib
that really are object files with an .a extension. They are libV77.a
and libD77.a. If you try to load these to resolve undefined symbols,
you will get "multiple definitions of symbol" (DLD_EMULTDEFS). A bug
report has been submitted to Convex to insure that all .a files really
are libraries.
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