# Building from source
In order to build OWGW, you will need to install its dependencies, which includes the following:
- cmake
- boost
- POCO 1.10.1 or later
- a C++17 compiler
- openssl
- libpq-dev (PortgreSQL development libraries)
- mysql-client (MySQL client)
- librdkafka
- cppkafka

The build is done in 2 parts. The first part is to build a local copy of the framework tailored to your environment. This
framework is called [Poco](https://github.com/pocoproject/poco). The version used in this project has a couple of fixes
from the master copy needed for cmake. Please use the version of this [Poco fix](https://github.com/Telecominfraproject/wlan-cloud-lib-poco). Building
Poco may take several minutes depending on the platform you are building on.

## Ubuntu
These instructions have proven to work on Ubuntu 20.4.
```bash
sudo apt install git cmake g++ libssl-dev libmariadb-dev \
    libpq-dev libaprutil1-dev apache2-dev libboost-all-dev \
    librdkafka-dev // default-libmysqlclient-dev \
    nlohmann-json-dev

git clone https://github.com/Telecominfraproject/wlan-cloud-lib-poco --branch poco-tip-v1 poco
cd poco
mkdir cmake-build
cd cmake-build
cmake ..
cmake --build . --config Release
sudo cmake --build . --target install
cd ../..

git clone https://github.com/Telecominfraproject/wlan-cloud-lib-cppkafka --branch tip-v1 cppkafka
cd cppkafka
mkdir cmake-build
cd cmake-build
cmake ..
cmake --build . --config Release
sudo cmake --build . --target install
cd ../..

git clone https://github.com/Telecominfraproject/wlan-cloud-lib-valijson --branch tip-v1 valijson
cd valijson
mkdir cmake-build
cd cmake-build
cmake ..
cmake --build . --config Release
sudo cmake --build . --target install
cd ../..

git clone https://github.com/fmtlib/fmt --branch 9.0.0 /fmtlib
cd fmtlib
mkdir cmake-build
cd cmake-build
cmake ..
make
make install
cd ../..

git clone https://github.com/Telecominfraproject/wlan-cloud-ucentralgw
cd wlan-cloud-ucentralgw
mkdir cmake-build
cd cmake-build
cmake ..
make -j 8
cd ../..
```

## Fedora
The following instructions have proven to work on Fedora 33
```bash
sudo yum install cmake g++ openssl-devel mysql-devel mysql apr-util-devel boost boost-devel \
    yaml-cpp-devel lua-devel
sudo dnf install postgresql.x86_64 librdkafka-devel
sudo dnf install postgresql-devel json-devel

git clone https://github.com/Telecominfraproject/wlan-cloud-lib-poco --branch poco-tip-v1 poco
cd poco
mkdir cmake-build
cd cmake-build
cmake ..
cmake --build . --config Release
sudo cmake --build . --target install
cd ../..

git clone https://github.com/Telecominfraproject/wlan-cloud-lib-cppkafka --branch tip-v1 cppkafka
cd cppkafka
mkdir cmake-build
cd cmake-build
cmake ..
cmake --build . --config Release
sudo cmake --build . --target install
cd ../..

git clone https://github.com/Telecominfraproject/wlan-cloud-lib-valijson --branch tip-v1 valijson
cd valijson
mkdir cmake-build
cd cmake-build
cmake ..
cmake --build . --config Release
sudo cmake --build . --target install
cd ../..

git clone https://github.com/Telecominfraproject/wlan-cloud-ucentralgw
cd wlan-cloud-ucentralgw
mkdir cmake-build
cd cmake-build
cmake ..
make
cd ../..
```

## macOS Build
The following instructions have proven to work on macOS Big Sur. You need to install [Homebrew](https://brew.sh/). You must also have installed [XCode for OS X](https://www.freecodecamp.org/news/how-to-download-and-install-xcode/).
```bash
brew install openssl \
	cmake \
	libpq \
	mysql-client \
	apr \
	apr-util \
	boost \
	yaml-cpp \
	postgresql \
	librdkafka \
	nlohmann-json \
	fmt

git clone https://github.com/Telecominfraproject/wlan-cloud-lib-poco --branch poco-tip-v1 poco
pushd poco
mkdir cmake-build
push cmake-build
cmake -DOPENSSL_ROOT_DIR=</path/to/openssl> -DENABLE_NETSSL=1 -DENABLE_JWT=1 -DENABLE_CRYPTO=1 ..
cmake --build . --config Release
sudo cmake --build . --target install
popd
popd

git clone https://github.com/Telecominfraproject/wlan-cloud-lib-cppkafka --branch tip-v1 cppkafka
pushd cppkafka
mkdir cmake-build
pushd cmake-build
cmake ..
cmake --build . --config Release
sudo cmake --build . --target install
popd
popd

git clone https://github.com/Telecominfraproject/wlan-cloud-lib-valijson --branch tip-v1 valijson
pushd valijson
mkdir cmake-build
pushd cmake-build
cmake ..
cmake --build . --config Release
sudo cmake --build . --target install
popd
popd

git clone https://github.com/Telecominfraproject/wlan-cloud-ucentralgw
pushd wlan-cloud-ucentralgw
mkdir cmake-build
pushd cmake-build
cmake ..
make -j
popd
popd
```

## Raspberry
The build on a rPI takes a while. You can shorten that build time and requirements by disabling all the larger database
support. You can build with only SQLite support by not installing the packages for PostgreSQL, and MySQL by
adding -DSMALL_BUILD=1 on the cmake build line.

```bash
sudo apt install git cmake g++ libssl-dev libaprutil1-dev apache2-dev \
    libboost-all-dev libyaml-cpp-dev

git clone https://github.com/Telecominfraproject/wlan-cloud-lib-poco --branch poco-tip-v1 poco
cd poco
mkdir cmake-build
cd cmake-build
cmake ..
cmake --build . --config Release
sudo cmake --build . --target install
cd ../..

git clone https://github.com/Telecominfraproject/wlan-cloud-ucentralgw
cd wlan-cloud-ucentralgw
mkdir cmake-build
cd cmake-build
cmake -DSMALL_BUILD=1 ..
make
cd ../..
```
