The project was born out of a need to have a good
libm for the
Julia programming langage that worked
consistently across compilers and operating systems, and in 32-bit and
OpenLibm builds on Linux, Mac OS X, Windows, FreeBSD, and OpenBSD. It builds with both GCC and clang. Although largely tested and widely used on x86 architectures, openlibm also supports ARM and powerPC.
maketo build OpenLibm.
make USEGCC=1to build with GCC. This is the default on Linux and Windows.
make USECLANG=1to build with clang. This is the default on OS X and FreeBSD.
- Architectures are auto-detected. Use
make ARCH=i386to 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.
- 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:
make CC=egccto force Make to use the newer
PowerPC support for openlibm was graciously sponsored by IBM.