+
+#
+# Try compiling a sample of the type of code that appears in
+# gencode.c with "inline", "__inline__", and "__inline".
+#
+# Autoconf's AC_C_INLINE, at least in autoconf 2.13, isn't good enough,
+# as it just tests whether a function returning "int" can be inlined;
+# at least some versions of HP's C compiler can inline that, but can't
+# inline a function that returns a struct pointer.
+#
+AC_DEFUN(AC_LBL_C_INLINE,
+ [AC_MSG_CHECKING(for inline)
+ AC_CACHE_VAL(ac_cv_lbl_inline, [
+ ac_cv_lbl_inline=""
+ ac_lbl_cc_inline=no
+ for ac_lbl_inline in inline __inline__ __inline
+ do
+ AC_TRY_COMPILE(
+ [#define inline $ac_lbl_inline
+ static inline struct iltest *foo(void);
+ struct iltest {
+ int iltest1;
+ int iltest2;
+ };
+
+ static inline struct iltest *
+ foo()
+ {
+ static struct iltest xxx;
+
+ return &xxx;
+ }],,ac_lbl_cc_inline=yes,)
+ if test "$ac_lbl_cc_inline" = yes ; then
+ break;
+ fi
+ done
+ if test "$ac_lbl_cc_inline" = yes ; then
+ ac_cv_lbl_inline=$ac_lbl_inline
+ fi])
+ if test ! -z "$ac_cv_lbl_inline" ; then
+ AC_MSG_RESULT($ac_cv_lbl_inline)
+ else
+ AC_MSG_RESULT(no)
+ fi
+ AC_DEFINE_UNQUOTED(inline, $ac_cv_lbl_inline, [Define as token for inline if inlining supported])])
+