http://www.mozilla.org/js/spidermonkey/

https://developer.mozilla.org/En/SpiderMonkey/Getting_SpiderMonkey_source_code

otmanix@pc103835 ~/download/js
$ gzip -d js-1.7.0.tar.gz

otmanix@pc103835 ~/download/js
$ tar -xf js-1.7.0.tar

otmanix@pc103835 ~/download/js
$ cd js/src

http://pmelson.blogspot.com/2007/12/building-didier-stevens-spidermonkey-in.html

otmanix@pc103835 ~/download/js/js/src
$ grep -n MKSHLIB config/Linux_All.mk
50:MKSHLIB = $(LD) -shared $(XMKSHLIBOPTS)

otmanix@pc103835 ~/download/js/js/src
$ grep -n MKSHLIB config/Linux_All.mk
50:MKSHLIB = $(LD) -r $(XMKSHLIBOPTS)

otmanix@pc103835 ~/download/js/js/src
$ make -f Makefile.ref OS_ARCH='Linux'
cat: ../../dist/Linux_All_DBG.OBJ/nspr/Version: No such file or directory
cd editline; make -f Makefile.ref all
make[1]: Entering directory `/home/otmanix/download/js/js/src/editline'
...
            editline/Linux_All_DBG.OBJ/libedit.a
make[1]: `Linux_All_DBG.OBJ/jsautocfg.h' is up to date.
make[1]: `Linux_All_DBG.OBJ/jscpucfg' is up to date.
make[1]: `Linux_All_DBG.OBJ/jscpucfg.o' is up to date.
make[1]: Leaving directory `/home/otmanix/download/js/js/src'

otmanix@pc103835 ~/download/js/js/src
$
otmanix@pc103835 ~/download/js/js/src
$ cp -rp Linux_All_DBG.OBJ/ /usr/local/js
otmanix@pc103835 ~/download/js/js/src
$ cp *.h /usr/local/js/