BewareMyPower edited a comment on issue #14673:
URL: https://github.com/apache/pulsar/issues/14673#issuecomment-1070361140
TL; DR the example code is wrong, we need to fix the doc. /cc @Anonymitaet
You should add a declaration before `createProducer`:
```c++
Client client("pulsar://localhost:6650");
Producer producer; // **See here**
Result result =
client.createProducer("persistent://public/default/my-topic", producer);
```
----
> there is a follow-up step called install Debian which I do not know what
it is for (I am using Ubuntu)
It's not a follow-up step. It's a parallel step.
When you install a C++ SDK, it means following files need to be generated:
- C++ headers (`*.h`)
- C++ libraries, it can be either a dynamic library (`*.so` on Linux) or a
static library (`*.a` on Linux).
A `*.deb` file is a pre-built Debian C++ package. (Ubuntu is derived from
Debian) i.e. the `apt install ./apache-pulsar-client.deb` command will install
the C++ headers and libraries to the target directory. Since the pre-built
Debian C++ package doesn't include a static library, you won't see a `*.a` file.
However, if you have the source code of the C++ SDK, you can compile it by
yourself, i.e. run `cmake` and `make` commands (or `./configure` for C++
libraries that use [GNU Autotools](https://en.wikipedia.org/wiki/GNU_Autotools)
to build). At last, you need to run `make install`, which needs the superuser
permission, to copy these files (`*.h`, `*.so`, `*.a`) to the target directory.
You can also copy these files manually.
In short, you can choose to either compile from source or install from a
pre-built package. The advantage of compiling from source is that you can get
the latest library.
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