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Mirorr of https://github.com/richfelker/musl-cross-make to compile musl build tools for mipsel-muslsf
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Christopher Friedt d49ca4bfd7 reduced required changes for building on mac to solely creating fake empty static libraries with touch (because Apples ar errors out when trying to create an empty static library) 2016-04-29 13:46:00 -04:00
patches reduced required changes for building on mac to solely creating fake empty static libraries with touch (because Apples ar errors out when trying to create an empty static library) 2016-04-29 13:46:00 -04:00
presets update documentation with better instructions, added presets 2015-11-18 22:50:22 +00:00
.gitignore fix .gitignore to only apply to top-level directory 2016-02-11 23:55:01 +00:00
Makefile reduced required changes for building on mac to solely creating fake empty static libraries with touch (because Apples ar errors out when trying to create an empty static library) 2016-04-29 13:46:00 -04:00
README.md update documentation with better instructions, added presets 2015-11-18 22:50:22 +00:00
config.mak.dist update documentation with better instructions, added presets 2015-11-18 22:50:22 +00:00

README.md

musl-cross-make

This is a quick and simple makefile-based alternative for producing musl-based cross compilers. The current focus is on SH2/J2 Core targets and NOMMU (where PIE or FDPIC is mandatory) since these are not adequately supported by other musl cross-compiler toolchain build systems, but all musl-supported targets are intended to work.

In addition to the build system, musl-cross-make provides a number of patches, including:

  • Updated versions of the musl target patches going into upstream GCC
  • Static-PIE support and optionally defaulting to PIE
  • Fixes for SH-specific bugs and bitrot in GCC
  • Support for J2 Core CPU target in GCC & binutils
  • SH/FDPIC ABI support

Most of these patches are integrated in gcc trunk/binutils master. They should also be usable with Gregor's original musl-cross or other build systems, if desired.

Some functionality (SH/FDPIC, and support for J2 specific features) is presently only available with gcc 5.2.0 and binutils 2.25.1.

Usage

The build system make be configured by providing a config.mak file in the top-level directory. The only mandatory variable is TARGET, which should contain a gcc target tuple (such as sh2eb-linux-musl), but many more options are available. The top-level config.mak.dist file shows examples, and several full configurations are available in presets/*.

For recent gcc versions that need gmp/mpfr/mpc, suitable versions need to be installed in the default library path, or the appropriate --with configure options need to be added to GCC_CONFIG in config.mak so that the gcc configure process can find them.

After setting up config.mak, simply run make. Parallel builds are supported.

The resulting toolchain will be placed ./output by default, or the OUTPUT directory specified in config.mak. It is sysrooted and can be freely moved to a different location.