gcc cross toolchain builder on MSYS2/MinGW

Built binaries

• See release page: https://github.com/kekyo/gcc-toolchain/releases

Prerequisities

• MSYS2 (http://www.msys2.org/)
  • Currently tested on MSYS2 64bit environment (20161025)

Build

Install and setup MSYS2

• You have to choose "final-result of target toolchain (gcc.exe, ld.exe ...) arch" for 64bit or 32bit.
• Be careful: You have to choose "MinGW console" instead "MSYS2 console".

64bit: Open MinGW 64bit console and execute below:

pacman -Syuu
pacman -S bzip2 base-devel mingw-w64-x86_64-toolchain

32bit: Open MinGW 32bit console and execute below:

pacman -Syuu
pacman -S bzip2 base-devel mingw-w64-i686-toolchain

Build gcc toolchains

1. Execute build-prerequisities.sh

• It downloads gcc related source codes from gnu.org.
• Build prerequisity libraries into "stage/gcc-bootstrap/".
• It requires execution only once.

2. Execute build.sh with required target specific.

• ex: build.sh arm-none-eabi
• ex: build.sh arm-none-eabi avr xtensa-none-elf
• You can set arguments of multiple targets. And it can execute multiple times.
• If building finished normally, toolchains store into "artifacts/gcc-*_*_*.tar.bz2"
• ex: "artifacts/gcc-7.2_mingw-w64-i686_arm-none-eabi.tar.bz2"

Note:

• When received error executing at 'configure autoconf':

C:/msys64/usr/bin/gawk.exe: error while loading shared libraries: msys-readline7.dll: cannot open shared object file: No such file or directory

• You have to copy (or link) the '/usr/bin/msys-readline6.dll' to '/usr/bin/msys-readline7.dll'.
  • MSYS2's bug? (Cause at 2018.01.08)

License

• MIT