25.4.1 DLL Support with GNU Autotools

Here are the contents of the three source files used as an example for the remainder of this chapter (for brevity, they are missing most of the special code one would normally use to maximise portability):

`hello.h' documents the interface to `libhello.dll':

#ifndef HELLO_H #define HELLO_H 1 extern int hello (const char *who); #endif /* !HELLO_H */

`hello.c' is the implementation of `libhello.dll':

#if HAVE_CONFIG_H # include <config.h> #endif #include <stdio.h> #include "hello.h" int hello (const char *who) { printf("Hello, %s!\n", who); return 0; }

`main.c' is the source for the executable which uses `libhello.dll':

#if HAVE_CONFIG_H # include <config.h> #endif #include "hello.h" int main (int argc, const char *const argv[]) { return hello("World"); }