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To anyone having issues building this, ensure that your makepkg.conf doesn't include "-Werror=format-security" in cflags. This caused my build to fail

@xiretza Makefiles still contain the -Wformat and -Werror=format-security command. That's why you're getting an error. I gave a temporary fix below.

Those who get a compilation error should add the following before the "make all-gcc all-target-libgcc" command in the build part of the PKGBUILD file

sed -i 's/Wformat/Wno-format/g' $(grep -lr "Wformat" | grep Makefile)

sed -i 's/Werror=format-security/Wno-format-security/g' $(grep -lr "Werror=format-security" | grep Makefile)

This is the instant solution. There is no problem in compiling at the moment. If I find another solution I will share it.

Would probably be best to just apply this patch from core/gcc: https://github.com/archlinux/svntogit-packages/blob/c0c9a945c11d1868af6d4dbcef985319ee153ea3/trunk/gcc11-Wno-format-security.patch

Edit: nevermind, that's already being applied. I'll have to investigate why my build is still failing.

If you want to build this but want to keep the default makepkg CFLAGS and CXXFLAGS add this to the top of the prepare part in PKGBUILD:

CFLAGS="${CFLAGS/ -Werror=format-security/}"

CXXFLAGS="${CXXFLAGS/ -Werror=format-security/}"

Maybe the mainter can add this?

The default makepkg.conf now includes "-Werror=format-security". Can the package be made to work with that default?

To anyone having issues building this, ensure that your makepkg.conf doesn't include "-Werror=format-security" in cflags. This caused my build to fail

@tavianator:
arm-linux-gnueabihf-gcc-stage1 6.1.1-3 on x86_64
makepkg build failure with:
/usr/bin/arm-linux-gnueabihf-as: unrecognized option '--64'

@tavianator: Great, thanks! The CXXFLAGS thing was just a workaround in the meantime.

@teozkr: I have updated this package to GCC 6.1.1-1, which seems to fix everything without having to change CXXFLAGS. Hopefully it works for you!

This doesn't build anymore with GCC 6.
Changing line 59 from:

CXXFLAGS=${CXXFLAGS/-pipe/}

to

CXXFLAGS="${CXXFLAGS/-pipe/} --std=gnu++03"

seems to fix it.

@blippy: This repo may help you with that: https://github.com/tavianator/arch-rpi-cross

install.sh will build everything in the right order.