docs: added build from source for arch linux

docpages/building/archlinux.md

@@ -0,0 +1,53 @@
+\page build-archlinux Building on Arch Linux
+
+\note You might not have to build library from source on arch, you can install directly from AUR repo, See the guide [here](/install-arch-aur.html).
+
+## 1. Copy Source code
+```bash
+git clone https://github.com/brainboxdotcc/DPP
+cd DPP/
+```
+
+```bash
+cmake -B ./build -DCMAKE_INSTALL_PREFIX=/usr/
+cmake --build ./build -j8
+```
+
+Replace the number after `-j` with a number suitable for your setup, usually the same as the number of cores on your machine. `cmake` will fetch any dependencies that are required for you and ensure they are compiled alongside the library.
+
+## 2. Install to /usr/include and /usr/lib
+
+```bash
+cd build
+sudo make install
+```
+
+## 3. Installation to a Different Directory
+
+If you want to install the library, its dependencies, and header files to a different directory, specify this directory when running `cmake`:
+
+```bash
+cmake .. -DCMAKE_INSTALL_PREFIX=/path/to/install
+```
+
+Then once the build is complete, run `make install` to install to the location you specified.
+
+\note If you have installed `g++` and not made any changes in enviorment variable related to the path of system headers then you should install in `/usr/` because it is the default system header location on arch.
+
+## 4. Using the Library
+
+Once installed to the `/usr/` directory, you can make use of the library in standalone programs simply by including it and linking to it:
+
+```bash
+g++ mydppbot.cpp -o dppbot -ldpp
+```
+
+The important flags in this command-line are:
+
+* `-ldpp` - Link to libdpp.so
+* `mydppbot.cpp` - Your source code
+* `dppbot` - The name of the executable to make
+
+\include{doc} install_prebuilt_footer.dox
+
+**Have fun!**

docpages/example_programs/the_basics/firstbot.md

@@ -100,7 +100,7 @@ The `event.reply` function (dpp::slashcommand_t::reply) replies to a slash comma
 
 To make the bot start, we must call the dpp::cluster::start method, e.g. in our program by using `bot.start(dpp::st_wait)`.
 
-We also add a line to tell the library to output all its log information to the console, `bot.on_log(dpp::utility::cout_logger());` - if you wanted to do something more advanced, you can replace this parameter with a lambda just like all other events.
+We also add a line to tell the library to output all its log information to the console, use `bot.on_log(dpp::utility::cout_logger());` (dpp::utility::cout_logger) - if you wanted to do something more advanced, you can replace this parameter with a lambda just like all other events.
 
 The parameter which we set to false indicates if the function should return once all shards are created. Passing dpp::st_wait here tells the program you do not need to do anything once `bot.start` is called.
 

docpages/install/install-arch-aur.md

@@ -15,6 +15,8 @@ or use your favourite package manager:
 yay -Sy dpp
 ```
 
+\note If the package is outdated try installing `dpp-git` or build it from [source](/buildarchlinux.html).
+
 This will do the following three things:
 
 - Clone the D++ AUR repository to a directory called `dpp`