Roland McGrath <[EMAIL PROTECTED]> writes: > libc's aclocal.m4 has macros that appear to have the same intent as the one > in the hurd's aclocal.m4 (I'm not entirely clear on what the point of these > actually is).
The normal autoconf compiler check will fail if it can't link a program. If you are building libc (or the Hurd with a partial cross compiling setup) then you won't be able to link, and yet the compiler is working fine. So we substitute the normal autoconf test with the one you cited.