On Thursday 01 December 2005 13:34, Victor Lazzarini wrote:

> Can we have version-based dynamic libs, with libcsound.so/etc as
> a symbolic link? Overwriting of static libs.

While it seems to be ignored by most people, I already solved
that on Linux. The dynamic Csound library has a name in the
format
  libcsound.so.x.y        (floats)
  libcsound64.so.x.y      (doubles)
where x is the Csound major version (i.e. 5), and y is the
API major version (currently 1, will be incremented for every
change after the release that is not backward compatible).
So, the initial names are libcsound.so.5.1 and libcsound64.so.5.1.
It is possible that the Csound version could be dropped, leaving
only the API version, e.g. libcsound.so.1, as the '5' is actually
redundant.
There are symbolic links to these files as libcsound.so and
libcsound64.so, so that linking as -lcsound or -lcsound64 will
find the library, however, the real name with the version number
is compiled into the library with the -soname linker option, so
that at run-time the system will look for the full name even
though you just linked with -lcsound.
This is all already implemented in SConstruct.
Also, I install _csnd.so to /usr/local/lib with the name
lib_csnd.so, and generate a symbolic link for Python as
/usr/lib/python/VERSION/lib-dynload/_csnd.so (VERSION is
something like 2.4), and this library links to the double
precision dynamic API library (TODO: floats, and version
number of csnd ?). This way, you can just 'import csnd' in
Python (of course, csnd.py* are also installed to the correct
directory so that they will be found). I do not use or care
about Java, though, so no ideas on that.

> what do you mean by wrapped/unwrapped?

The use of simple shell scripts that call the actual Csound
binaries (installed to a private directory), after setting up
the necessary environment variables. This approach does not
work very well with modules for external software (PD, Python,
etc.), though.


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