Re: [ESPResSo] Question about Espresso Installation

[Olaf Lenz]

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Hi Lorenzo,

There are a number of things to be said.

First of all, there is absolutely no need to install ESPResSo. You can
easily run "Espresso" directly from the directory where you have
compiled it. In fact, only very few people using ESPResSo that I know of
ever use "make install".

The distinction between different versions (like an experimental and a
production version) can be very easily done by using independent build
directories. In that case, you can use completely different sets of
features, libraries etc. for a specific version, while using the same
source code for both versions.

To do that, just create a directory anywhere in your system (say,
/home/user/espresso_experimental, in the following I will call this the
build path), change to that directory, and call the configure script
from the source directory. So, assuming that the ESPResSo source code
resides in the directory /home/user/espresso_src (the source path), use

        cd /home/user/espresso_experimental
        <Create myconf.h including all the features you need>
        /home/user/espresso_src/configure <whatever options you need>
        make

This will build Espresso with the given myconf.h and configuration
options and put all build files (like the .o-files) into the build path,
and the source path will not be touched. Therefore, you can easily do
the same for a production version.

I think that this should solve all your problems.

        Olaf
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