how to compile the .so to allow extern functions
andy wang
ypwangreg@gmail.com
Sat Dec 16 08:17:00 GMT 2006
Hi, All
I want to compile a .so which contains extern function that may be
defined on the main program.
The following file can be compiled on linux without any problem but
how to compile it on cygwin?
$ cat bug1.c
//this will be .so and will call an extern func1() in the main proc
int func1();
int myfunc()
{
printf("in myfunc.so");
func1();
}
$ gcc -o bug1.so -shared bug1.c
/cygdrive/c/DOCUME~1/Flyiky/LOCALS~1/Temp/ccBB7v0l.o:
bug1.c:(.text+0x13): undefined reference to `_func1'
collect2: ld returned 1 exit status
Thanks in advance!
Regards,
Andy
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