Mine

make[1]: Leaving directory `/root/res_js/mozilla/js/src'
./astxs -append=CFLAGS:"-I./mozilla/js/src -Wall -Wno-format -g -DXP_UNIX -DSVR4 -DSYSV -D_BSD_SOURCE -DPOSIX_SOURCE -DHAVE_LOCALTIME_R -DX86_LINUX  -DDEBUG -DDEBUG_root -DJS_THREADSAFE -I./mozilla/js/src -I./mozilla/js/src/Linux_All_DBG.OBJ -Wall -Wno-format -g -DXP_UNIX -DSVR4 -DSYSV -D_BSD_SOURCE -DPOSIX_SOURCE -DHAVE_LOCALTIME_R -DX86_LINUX  -DDEBUG -DDEBUG_root -DJS_THREADSAFE -I./mozilla/nsprpub/dist/include/nspr -ILinux_All_DBG.OBJ" -append=LDFLAGS:"-DXP_UNIX -DSVR4 -DSYSV -D_BSD_SOURCE -DPOSIX_SOURCE -DHAVE_LOCALTIME_R -DX86_LINUX  -DDEBUG -DDEBUG_root -DJS_THREADSAFE -I./mozilla/nsprpub/dist/include/nspr -Wall -Wno-format -g -DXP_UNIX -DSVR4 -DSYSV -D_BSD_SOURCE -DPOSIX_SOURCE -DHAVE_LOCALTIME_R -DX86_LINUX  -DDEBUG -DDEBUG_root -DJS_THREADSAFE -I./mozilla/nsprpub/dist/include/nspr " -append=EXTOBJ:"./mozilla/js/src/Linux_All_DBG.OBJ/libjs.a ./mozilla/nsprpub/dist/lib/libnspr4.a" res_js.c
/bin/sh: curl-config: command not found
gcc -I/usr/src/asterisk -I/usr/src/asterisk/include  -pipe  -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -g  -Iinclude -I../include -D_REENTRANT -D_GNU_SOURCE  -O6 -march=i686 -DZAPTEL_OPTIMIZATIONS         -fomit-frame-pointer  -fPIC -I./mozilla/js/src -Wall -Wno-format -g -DXP_UNIX -DSVR4 -DSYSV -D_BSD_SOURCE -DPOSIX_SOURCE -DHAVE_LOCALTIME_R -DX86_LINUX  -DDEBUG -DDEBUG_root -DJS_THREADSAFE -I./mozilla/js/src -I./mozilla/js/src/Linux_All_DBG.OBJ -Wall -Wno-format -g -DXP_UNIX -DSVR4 -DSYSV -D_BSD_SOURCE -DPOSIX_SOURCE -DHAVE_LOCALTIME_R -DX86_LINUX  -DDEBUG -DDEBUG_root -DJS_THREADSAFE -I./mozilla/nsprpub/dist/include/nspr -ILinux_All_DBG.OBJ -c res_js.c -o res_js.o
In file included from res_js.c:38:
./mozilla/js/src/jsapi.h:153: warning: function declaration isn't a prototype
In file included from ./mozilla/js/src/jsatom.h:53,
                 from res_js.c:39:
./mozilla/js/src/jslock.h:135: warning: function declaration isn't a prototype
./mozilla/js/src/jslock.h:143: warning: function declaration isn't a prototype
gcc -shared -Xlinker -x -o res_js.so  -DXP_UNIX -DSVR4 -DSYSV -D_BSD_SOURCE -DPOSIX_SOURCE -DHAVE_LOCALTIME_R -DX86_LINUX  -DDEBUG -DDEBUG_root -DJS_THREADSAFE -I./mozilla/nsprpub/dist/include/nspr -Wall -Wno-format -g -DXP_UNIX -DSVR4 -DSYSV -D_BSD_SOURCE -DPOSIX_SOURCE -DHAVE_LOCALTIME_R -DX86_LINUX  -DDEBUG -DDEBUG_root -DJS_THREADSAFE -I./mozilla/nsprpub/dist/include/nspr  res_js.o  ./mozilla/js/src/Linux_All_DBG.OBJ/libjs.a ./mozilla/nsprpub/dist/lib/libnspr4.a
[root@localhost res_js]#