Build a cross compiler on Windows using MSYS2

[hwg]

It compiled fine for an hour then spat out the following error:

Command lines:

Code: Select all

$ export PREFIX=/home/Harley/opt/cross
$ export TARGET=i686-elf
$ ../gcc-5.3.0/configure --target=$TARGET --prefix="$PREFIX" --disable-nls --enable-languages=c,c++ --without-headers
$ make all-gcc # it fails here

The error:

Code: Select all

In file included from /usr/lib/gcc/x86_64-pc-msys/4.9.2/include/c++/string:41:0,
                 from ../../gcc-5.3.0/gcc/system.h:201,
                 from gtype-desc.c:22:
/usr/lib/gcc/x86_64-pc-msys/4.9.2/include/c++/bits/allocator.h:46:75: fatal error: bits/c++allocator.h: No such file or directory
compilation terminated.
Makefile:1065:recipe for target 'gtype-desc.o' failed
make[1]: *** [gtype-desc.o] Error 1
make[1]: Leaving directory '/home/Harley/src/build-gcc/gcc'
Makefile:4113: recipe for target 'all-gcc' failed
make: *** [all-gcc] Error 2

[Octocontrabass]

I don't think mixing headers from two different versions of GCC will work.

If you don't need GCC 4.9.2, try removing it.

[hwg]

Ah, 4.9.2 is the version of gcc that I have. I'm gonna have to either bootstrap a new compiler or find a binary.

[Octocontrabass]

MSYS2 includes GCC 5.3.0. When was the last time you updated your MSYS2 installation?

[hwg]

I did it!

Code: Select all

$ i686-elf-gcc -dumpmachine
i686-elf

Code: Select all

$ i686-elf-gcc --version
i686-elf-gcc (GCC) 5.3.0
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

[hwg]

Reinstalling gcc from pacman helped fix the issue with the header file. So, long story short, to compile in an MSYS2 environment, you do the following:

Code: Select all

# update MSYS
pacman -Syu
# install all dependencies
pacman -S gcc make bison flex texinfo {gmp,mpfr,mpc}-devel

After that, just follow the wiki from here.
Perhaps there should be a dependency table on the wiki. The dependency lists in parentheses might get a little long.