bk commit into 4.1 tree (jimw:1.2470) BUG#13621

[Jim Winstead]

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4.1 repository of jimw. When jimw does a push these changes will
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ChangeSet
  1.2470 05/11/10 11:20:36 jimw@stripped +1 -0
  Avoid trying to include <asm/atomic.h> when it doesn't work in C++
  code. (Bug #13621)

  configure.in
    1.399 05/11/10 11:20:33 jimw@stripped +5 -0
    Test whether atomic_add() and atomic_sub() are available in C++
    code, since that is primarily where we will be using them.

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	jimw
# Host:	rama.(none)
# Root:	/home/jimw/my/mysql-4.1-13621

--- 1.398/configure.in	2005-10-27 07:47:56 -07:00
+++ 1.399/configure.in	2005-11-10 11:20:33 -08:00
@@ -872,6 +872,9 @@
 if test "$TARGET_LINUX" = "true"; then
   AC_MSG_CHECKING([for atomic operations])
 
+  AC_LANG_SAVE
+  AC_LANG_CPLUSPLUS
+
   atom_ops=
   AC_TRY_RUN([
 #include <asm/atomic.h>
@@ -906,6 +909,8 @@
 
   if test -z "$atom_ops"; then atom_ops="no"; fi
   AC_MSG_RESULT($atom_ops)
+
+  AC_LANG_RESTORE
 
   AC_ARG_WITH(pstack,
     [  --with-pstack           Use the pstack backtrace library],