how to compile the .so to allow extern functions

Sun Dec 17 00:54:00 GMT 2006

Done:-), thank Brain for the help!
$ 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\n");
 func1();
}
$ cat bug1-main.c
#include <dlfcn.h>
int func1()
{
 printf("in main.func1()\n");
 return 0;
}
int main()
{
 int (*mf)();
 void *handle = dlopen("bug1.so", RTLD_LAZY);
 if(handle) {
 mf = dlsym(handle, "myfunc");
 if(mf) mf();
 dlclose(handle);
 }
 return 0;
}
$ gcc -shared -o bug1-main.so bug1-main.c -ldl -Wl,--out-implib=libmain.dll.a
Creating library file: libmain.dll.a
$ gcc -shared -o bug1.so bug1.c -L. -lmain
$ gcc -o bug1-main bug1-main.c -ldl
$ ./bug1-main.exe
in myfunc.so
in main.func1()
Regards,
Andy
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