From 69b3140a0d29051cc3d49ed017c7ca349173ce60 Mon Sep 17 00:00:00 2001 From: Lephenixnoir Date: Sat, 24 Oct 2020 14:03:04 +0200 Subject: [PATCH] sh3eb: add new README file --- README.md | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 README.md diff --git a/README.md b/README.md new file mode 100644 index 0000000..be8f9b3 --- /dev/null +++ b/README.md @@ -0,0 +1,32 @@ +# Soft-FP sh3eb port of OpenLibm + +This is a fork of [OpenLibm](https://github.com/JuliaMath/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//` 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 +``` + +## Using in a program + +Simply link with `-lopenlibm` as you would do with `-lm`. + +## README and Licensing + +See the original README file in README-OpenLibm.md. OpenLibm contains code +covered by various licenses, see LICENSE.md.