Building SpiderMonkey Javascript 1.6 on MacOS X

I wanted to run a Javascript version of a Mandelbrot program that was submitted to me for my Fractal Benchmark page. Unfortunately, I ran into trouble compiling SpiderMonkey, Mozilla's Javascript interpreter. Here's how I finally got it working on MacOS X.

This Didn't Just Work™

The included instructions to compile it are very simple. Just download, extract and make. But unfortunately the version provided doesn't work with MacOS X.

curl -O http://ftp.mozilla.org/pub/mozilla.org/js/js-1.60.tar.gz
tar -zxvf js-1.60.tar.gz
cd js/src
make -f Makefile.ref

I got the following error. Crap!

libtool: unrecognized option `-framework'
Try `libtool --help' for more information.
make[1]: *** [Darwin_DBG.OBJ/libjs.so] Error 1
make: *** [all] Error 2

At this point, I tried plan B, which is utilize Darwin Ports. Evidently the newest version shown is js-1.5 instead of 1.6. Unfortunately, it couldn't find a version to download anywhere. See spidermonkey on darwinports if you want to go down this route.

sudo port install spidermonkey
...
Error: Target com.apple.fetch returned: fetch failed
Error: /opt/local/bin/port: Status 1 encountered during processing.

Determined Googling Yields a Patch

After some determined Googling, I found the following patch was checked in later to fix it. Unfortunately I can't find the link now. Here's the patch.

diff -r js/src/config/Darwin.mk js.working/src/config/Darwin.mk
52c52,53
< MKSHLIB = libtool $(XMKSHLIBOPTS) -framework System
---
> MKSHLIB = $(CC) -dynamiclib $(XMKSHLIBOPTS) -framework System
> SO_SUFFIX = dylib

diff -r js/src/jsatom.c js.working/src/jsatom.c
924,925c924,925
< jsrefcount js_atom_map_count;
< jsrefcount js_atom_map_hash_table_count;
---
> static jsrefcount js_atom_map_count;
> static jsrefcount js_atom_map_hash_table_count;

Patched Javascript SpiderMonkey 1.6

For your convenience, I've provided a patched version you can download and build. Just copy-and-paste the following into your terminal. (Tested on MacOS X 10.4.9 on 2007-05-26.)

curl -O http://www.timestretch.com/software/js-1.60-MacOSX-Patch.tar.gz
tar -zxvf js-1.60-MacOSX-Patch.tar.gz
cd js-1.60-MacOSX-Patch/src
make -f Makefile.ref
sudo mv Darwin_DBG.OBJ/js /usr/local/bin/

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