make_rpi4.sh

#!/bin/bash

## should be run in V's main repo folder!

rm -rf tinycc/
rm -rf thirdparty/tcc/

pushd .

git clone git://repo.or.cz/tinycc.git
cd tinycc

./configure \
            --prefix=thirdparty/tcc \
            --bindir=thirdparty/tcc \
            --crtprefix=thirdparty/tcc/lib:/usr/lib:/usr/lib/arm-linux-gnueabihf \
            --libpaths=thirdparty/tcc/lib:/usr/lib/arm-linux-gnueabihf:/usr/lib:/lib/arm-linux-gnueabihf:/lib:/usr/local/lib/arm-linux-gnueabihf:/usr/local/lib \
            --extra-cflags="-O3 -flto" \
            --debug
            
make
make install

popd

mv tinycc/thirdparty/tcc thirdparty/tcc

mv thirdparty/tcc/tcc thirdparty/tcc/tcc.exe

thirdparty/tcc/tcc.exe -v -v

ln -s /usr/lib/arm-linux-gnueabihf/libatomic.so.1 "$(pwd)/thirdparty/tcc/lib/libatomic.so"
ln -s /usr/lib/arm-linux-gnueabihf/libgc.a "$(pwd)/thirdparty/tcc/lib/libgc.a"

export LD_FLAGS=-latomic

for me I found the easiest fix was just running LDFLAGS+=-latomic make

for me I found the easiest fix was just running LDFLAGS+=-latomic make

Nice - that didn't work for me unfortunately.

Do you have tcc working?
E.g. try: v -no-retry-compilation self
(-no-retry-compilation is to ensure that v doesn't switch to gcc automatically)

Relayed from Discord:

credits to @spytheman :
"the full script so far from a fresh Raspbian installation with tcc is:"

#!/bin/bash

set -x ## show commands as they run
set -e ## stop on errors

sudo apt-get install git build-essential libatomic1 libgc-dev libc6-dev
cc --version ## should be a modern-ish gcc or clang
make --version ## should be GNU Make

export VFLAGS='-cc /usr/local/bin/tcc -d dynamic_boehm'
export LDFLAGS='-latomic'

pushd .
git clone git://repo.or.cz/tinycc.git
cd tinycc/
./configure --extra-cflags='-O3 -flto' ## or --debug initially
make
sudo make install
popd
rm -rf tinycc/
tcc --version ## similar to: 'tcc version 0.9.27 2023-08-31 mob@...'

git clone https://github.com/vlang/v
cd v
make
./v --version
./v run examples/hello_world.v ## should work
echo 'println(2+2)' | ./v ## should be 4

Without tcc (more reliable, but slower):

#!/bin/bash

set -x ## show commands as they run
set -e ## stop on errors

sudo apt-get install git build-essential libatomic1 libgc-dev libc6-dev
cc --version ## should be a modern-ish gcc or clang
make --version ## should be GNU Make

export VFLAGS='-cc cc -d dynamic_boehm'
export LDFLAGS='-latomic'

git clone https://github.com/vlang/v
cd v
make
./v --version
./v run examples/hello_world.v ## should work
echo 'println(2+2)' | ./v ## should be 4

More resources on how to compile/use it there:
vlang/v#13759
and the exports can be added to the end of ~/.bashrc