../gcc/configure --enable-host-shared --disable-multilib --enable-languages=c,c++ --enable-plugin --disable-werror
make all-gcc -j8
make all-target-libgcc -j8
make all-target-libstdc++-v3 -j8

./gcc/xg++ -B./gcc/ -shared -fPIC -fno-rtti -I ../gcc/include -I ../gcc/gcc plugin.cpp -I ./gcc -I ./x86_64-pc-linux-gnu/libstdc++-v3/include -I ./x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu -I ../gcc/libstdc++-v3/include -I ../gcc/libstdc++-v3/libsupc++ -I ../gcc/libcpp/include -L ./x86_64-pc-linux-gnu/libstdc++-v3/src/.libs -o myplugin.so

./gcc/xgcc -B./gcc -fplugin=./myplugin.so -fdump-tree-original test.c -o test

git log
git format-patch -1 <hash>
python3 contrib/check_GNU_style.py gcc_component_ref.patch