mirror of
https://git.planet-casio.com/Lephenixnoir/OpenLibm.git
synced 2024-12-29 13:03:42 +01:00
40 lines
1.7 KiB
Markdown
40 lines
1.7 KiB
Markdown
# OpenLibm
|
|
|
|
[](https://travis-ci.org/JuliaLang/openlibm)
|
|
|
|
[OpenLibm](http://www.openlibm.org) is an effort to have a high quality, portable, standalone
|
|
C mathematical library ([`libm`](http://en.wikipedia.org/wiki/libm)).
|
|
It can be used standalone in applications and programming language
|
|
implementations.
|
|
|
|
The project was born out of a need to have a good `libm` for the
|
|
[Julia programming langage](http://www.julialang.org) that worked
|
|
consistently across compilers and operating systems, and in 32-bit and
|
|
64-bit environments.
|
|
|
|
## Platform support
|
|
|
|
OpenLibm builds on Linux, Mac OS X, Windows, FreeBSD, OpenBSD, and DragonFly BSD.
|
|
It builds with both GCC and clang. Although largely tested and widely
|
|
used on x86 architectures, openlibm also supports ARM and
|
|
powerPC.
|
|
|
|
## Build instructions
|
|
|
|
1. Use `make` to build OpenLibm.
|
|
2. Use `make USEGCC=1` to build with GCC. This is the default on
|
|
Linux and Windows.
|
|
3. Use `make USECLANG=1` to build with clang. This is the default on OS X
|
|
and FreeBSD.
|
|
4. Architectures are auto-detected. Use `make ARCH=i386` to force a
|
|
build for i386. Other supported architectures are i486, i586, and
|
|
i686. GCC 4.8 is the minimum requirement for correct codegen on
|
|
older 32-bit architectures.
|
|
5. On OpenBSD, you need to install GNU Make (port name: `gmake`) and a recent
|
|
version of `gcc` (tested: 4.9.2), as the default version provided by OpenBSD
|
|
is too old (4.2.1). If you use OpenBSD's port system for this (port name:
|
|
`gcc`), run `make CC=egcc` to force Make to use the newer `gcc`.
|
|
|
|
## Acknowledgements
|
|
|
|
PowerPC support for openlibm was graciously sponsored by IBM.
|