Index: bison/src/bison/2.4.1/bison-2.4.1-src/m4/inline.m4 |
=================================================================== |
--- bison/src/bison/2.4.1/bison-2.4.1-src/m4/inline.m4 (revision 0) |
+++ bison/src/bison/2.4.1/bison-2.4.1-src/m4/inline.m4 (revision 0) |
@@ -0,0 +1,40 @@ |
+# inline.m4 serial 3 |
+dnl Copyright (C) 2006 Free Software Foundation, Inc. |
+dnl This file is free software; the Free Software Foundation |
+dnl gives unlimited permission to copy and/or distribute it, |
+dnl with or without modifications, as long as this notice is preserved. |
+ |
+dnl Test for the 'inline' keyword or equivalent. |
+dnl Define 'inline' to a supported equivalent, or to nothing if not supported, |
+dnl like AC_C_INLINE does. Also, define HAVE_INLINE if 'inline' or an |
+dnl equivalent is effectively supported, i.e. if the compiler is likely to |
+dnl drop unused 'static inline' functions. |
+AC_DEFUN([gl_INLINE], |
+[ |
+ AC_REQUIRE([AC_C_INLINE]) |
+ AC_CACHE_CHECK([whether the compiler generally respects inline], |
+ [gl_cv_c_inline_effective], |
+ [if test $ac_cv_c_inline = no; then |
+ gl_cv_c_inline_effective=no |
+ else |
+ dnl GCC defines __NO_INLINE__ if not optimizing or if -fno-inline is |
+ dnl specified. |
+ dnl Use AC_COMPILE_IFELSE here, not AC_EGREP_CPP, because the result |
+ dnl depends on optimization flags, which can be in CFLAGS. |
+ dnl (AC_EGREP_CPP looks only at the CPPFLAGS.) |
+ AC_COMPILE_IFELSE( |
+ [AC_LANG_PROGRAM([[]], |
+ [[#ifdef __NO_INLINE__ |
+ #error "inline is not effective" |
+ #endif]])], |
+ [gl_cv_c_inline_effective=yes], |
+ [gl_cv_c_inline_effective=no]) |
+ fi |
+ ]) |
+ if test $gl_cv_c_inline_effective = yes; then |
+ AC_DEFINE([HAVE_INLINE], 1, |
+ [Define to 1 if the compiler supports one of the keywords |
+ 'inline', '__inline__', '__inline' and effectively inlines |
+ functions marked as such.]) |
+ fi |
+]) |