AC_C_INLINE test not robust enough?

[autoconf]

AC_C_INLINE loops through "inline", "__inline__", and "__inline" to
determine the proper keyword for inline support. These are used in the
following code fragment to test for inline support:
  static $inline int static_foo () {return 0; }
  $inline int foo () {return 0; }

The IRIX C compiler has no problems with __inline. However, if a third
test is added:
  extern $inline int extern_foo ();

then the IRIX C compiler barfs. So, should we add a third test? GCC
accepts the extern test.

-- 
albert chin (address@hidden)