Soft-FP sh3eb port of OpenLibm

This is a fork of OpenLibm with support for the sh3eb architecture, intended for add-in programming on fx-9860G and fx-CG 50.

Building

You will need a GCC toolchain built with --target=sh3eb-elf, such as the sh-elf-gcc commonly used on Planète Casio.

First locate the compiler's install directory. This is normally the lib/gcc/sh3eb-elf/<version>/ folder inside the install path of the compiler.

% PREFIX=$(sh-elf-gcc --print-search-dirs | grep install | sed 's/install: //')

You can then build and install the static libopenlibm.a archive and the headers.

% make USEGCC=1 TOOLPREFIX=sh-elf- libdir="$PREFIX" includedir="$PREFIX/include" install-static install-headers

Simply link with -lopenlibm as you would do with -lm.

See the original README file in README-OpenLibm.md. OpenLibm contains code covered by various licenses, see LICENSE.md.