fails on node 12

[bahamas10]

fresh clone

$ git clone [email protected]:joyent/v8plus.git
Cloning into 'v8plus'...
cd vremote: Counting objects: 295, done.
remote: Total 295 (delta 0), reused 0 (delta 0), pack-reused 295
Receiving objects: 100% (295/295), 137.01 KiB | 0 bytes/s, done.
Resolving deltas: 100% (185/185), done.
Checking connectivity... done.

install npm deps

$ cd v8plus
v8plus $ npm install
/

fail to compile example

v8plus $ cd examples
v8plus/examples $ make
NODE_PATH=../node_modules /opt/local/bin/node ../generrno.js -h -o v8plus_errno.h ../errno.json
/opt/local/bin/gcc  -DBUILDING_NODE_EXTENSION -DMODULE=example -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -DPIC -isystem /opt/local/include/node -I. -I.. -g -Wall -Wextra -Werror -fPIC -O2 -std=c99 -c -o example.o example.c
/opt/onbld/bin/i386/ctfconvert -l v8plus_0.3.0 example.o
/opt/local/bin/gcc -D_GNU_SOURCE -D__EXTENSIONS__ -DBUILDING_NODE_EXTENSION -DMODULE=example -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -DPIC -isystem /opt/local/include/node -I. -I.. -g -Wall -Wextra -Werror -fPIC -O2 -std=c99 -c -o v8plus_csup.o ../v8plus_csup.c
../v8plus_csup.c: In function 'v8plus_crossthread_init':
../v8plus_csup.c:333:6: error: passing argument 3 of 'uv_async_init' from incompatible pointer type [-Werror]
In file included from ../v8plus_csup.c:14:0:
/opt/local/include/node/uv.h:753:15: note: expected 'uv_async_cb' but argument is of type 'void (*)(struct uv_async_t *, int)'
cc1: all warnings being treated as errors
../Makefile.v8plus.targ:27: recipe for target 'v8plus_csup.o' failed
make: *** [v8plus_csup.o] Error 1

system

dave - arbiter sunos ~ $ uname -a
SunOS arbiter.rapture.com 5.11 joyent_20150709T171818Z i86pc i386 i86pc Solaris
dave - arbiter sunos ~ $ node -v
v0.12.5
dave - arbiter sunos ~ $ node -pe process.arch
ia32

NOTE: this works on node 10