gmp-mpfr-sys 0.3.0

Rust low-level bindings for GMP, MPFR and MPC
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# Rust low-level bindings for GMP, MPFR and MPC

The `gmp-mpfr-sys` crate provides Rust low-level bindings for

  - the
    [GNU Multiple Precision Arithmetic Library](https://gmplib.org/)
    (GMP),

  - the [GNU MPFR Library](http://www.mpfr.org/), a library for
    multiple-precision floating-point computations, and
	
  - [GNU MPC](http://www.multiprecision.org/), a library for the
    arithmetic of complex numbers with arbitrarily high precision.

The source of the three libraries is included in the package.

## License

This crate is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
  
See [LICENSE-LGPL](LICENSE-LGPL.md) and [LICENSE-GPL](LICENSE-GPL.md)
for details.

## Building on GNU/Linux

To build on GNU/Linux, simply make sure you have `diffutils`, `gcc`
and `make` installed on your system. For example on Fedora:

```sh
sudo dnf install diffutils gcc make
```

## Building on macOS

To build on macOS, you need the command-line developer tools. An easy
way to install them is to start building the crate using `cargo
build`. If the tools are not installed yet, a popup should appear
which should help you install them.

## Building on Windows

You can build on Windows with the Rust GNU toolchain and an up-to-date
MSYS2 installation. Some steps for a 64-bit environment are listed
below, you can follow similar steps for a 32-bit environment by
substituting 32 for 64. To install MSYS2:

1. Install MSYS2 using the [installer](https://msys2.github.io/).

2. Launch the MSYS2 MinGW 64-bit terminal from the start menu.

3. Install the required tools.

   ```sh
   pacman -S pacman-mirrors
   pacman -S diffutils make mingw-w64-x86_64-gcc
   ```
   
Then, to build a crate with a dependency on this crate:

1. Launch the MSYS MinGW 64-bit terminal from the start menu.

2. Change to the crate directory.

   Note that building the GMP and MPFR libraries in MSYS with absolute
   paths does not work very well, so relative paths are used. If your
   crate is inside `C:\msys64` and the `.cargo` directory is outside
   `C:\msys64`, this will not work. Please move your crate to the
   same side of `C:\msys64` as `.cargo`.

3. Build the crate using `cargo`.