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diff --git a/docs/src/gettingstarted/building/go.md b/docs/src/gettingstarted/building/go.md new file mode 100644 index 0000000..65f62a5 --- /dev/null +++ b/docs/src/gettingstarted/building/go.md @@ -0,0 +1,72 @@ +# Building the Go library +To build the Go library, you need the dependencies for your system installed. We will go over the needed dependencies for Linux and Windows. Afterwards, we explain the basic commands to build the library. + +## Dependencies +### Linux +To build the Go shared library using Linux you need the following dependencies: + +- [Go](https://go.dev/doc/install) 1.15 or later +- [Gcc](https://gcc.gnu.org/) +- [GNU Make](https://www.gnu.org/software/make/) +- Dependencies for each wrapper you are interested in + +### Windows +On Windows, you can install gcc and make (or even Go) via MinGW or Cygwin or use WSL. For MinGW: + +1. [Install MinGW](https://www.msys2.org/#installation) (you don't need to install any extra packages yet) and open some + MSYS2 terminal (e.g. from the start menu or one of the installed binaries) +2. Install the [`make`](https://packages.msys2.org/package/make?repo=msys) package (`pacman -S make`) (or + e.g. [`mingw-w64-x86_64-make`](https://packages.msys2.org/package/mingw-w64-x86_64-make?repo=mingw64) and + use `mingw32-make` in the command line) +3. To compile for x86_64: + 1. Install the [`mingw-w64-x86_64-gcc`](https://packages.msys2.org/package/mingw-w64-x86_64-gcc?repo=mingw64) + package + 2. Open the MinGW 64-bit console, via the start menu, or in your current + terminal: `path/to/msys64/msys2_shell.cmd -mingw64 -defterm -no-start -use-full-path` + 3. Run the make commands in the project directory +4. To compile for x86 (32-bit): + 1. Install the [`mingw-w64-i686-gcc`](https://packages.msys2.org/package/mingw-w64-i686-gcc?repo=mingw32) package + 2. Open the MinGW 32-bit console, via the start menu, or in your current + terminal: `path/to/msys64/msys2_shell.cmd -mingw32 -defterm -no-start -use-full-path` + 3. Run the make commands in the project directory + +## Commands +Before we can begin building the wrapper code, we need to build the Go code as a shared library. This section will tell you how to do so. + +To build the shared library for the current platform issue the following command in the root directory: + +```bash +make +``` + +You can also build the shared library for a specified OS & architecture (example): + +```bash +make GOOS=windows GOARCH=386 +``` + +We use cgo to build a shared library, to list all platform supported by cgo issue `go tool dist list`. + +The shared library will be output in `exports/lib/`. + +For cross compiling, you usually need to specify the compiler, for example: + +```bash +make GOOS=windows GOARCH=amd64 CC=x86_64-w64-mingw32-gcc +``` + +For example, you can cross compile for Windows from Linux using [MinGW-w64](https://www.mingw-w64.org/downloads/). + +This shared library gets loaded by the different wrappers. To build the actual wrapper code, you need other build commands. This will be explained now + +### Cleaning +To clean build the library and wrapper, issue the following command in the root directory: + +```bash +make -j clean +``` + +Usually you won't need to do this, as changes in the library should automatically be incorporated in wrappers. +Specify `CLEAN_ALL=1` to also remove downloaded dependencies for some wrappers. You can clean individual wrappers by +executing clean in their directories, or specify `WRAPPERS=...`. + |