紧急请教informix的external procedure怎么生成

newwoods

我要做一个informix的procedure，我的做法：
先写一个简单c程序a.c：
＃include<stdio.h>;
prthello(){
&amp; &amp; &amp;printf("hello";
}
编译：
cc +z &amp;a.c
生成动态库
ld -b -o a.sl a.o
在informix中执行：
create procedure a()
external name "$path/a.sl(a)"
language c
end procedure;
没有报错
然后在c程序b.c中调用：
exec sql include sqlca;
main(){
&amp; &amp;exec sql database $dbnane;
&amp; &amp;exec sql execute procedure a;
&amp; &amp;if(sqlca.sqlcode){
&amp; &amp; &amp; printf("error,%d\n",sqlca.sqlcode);
&amp; &amp; &amp; exit(1);
&amp; &amp;}
&amp; &amp; exit(0);
}
编译cc b.c 生成a.out可执行文件
当执行a.out，返回错误，错误码为9793
A bad external name, missing file, or wrong permissions might cause this
error.

哪位高手，伸一下手啊！