[SCM] GNU Autoconf source repository branch, master, updated. v2.63-168-g3d6b500

[Eric Blake]

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- Log -----------------------------------------------------------------
commit 3d6b5007ca2e4a6bc101b5399adc2455924b9777
Author: Eric Blake <address@hidden>
Date:   Thu Nov 6 16:29:53 2008 -0700

    Speed up AC_CHECK_TYPE.
    
    * lib/autoconf/types.m4 (AC_CHECK_TYPE): Factor out $@, and avoid
    regex when enough arguments are present.
    
    Signed-off-by: Eric Blake <address@hidden>

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog             |    6 ++++++
 lib/autoconf/types.m4 |   21 ++++++++++-----------
 2 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 37e69c7..34a61c6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2008-11-06  Eric Blake  <address@hidden>
+
+       Speed up AC_CHECK_TYPE.
+       * lib/autoconf/types.m4 (AC_CHECK_TYPE): Factor out $@, and avoid
+       regex when enough arguments are present.
+
 2008-11-06  Paolo Bonzini  <address@hidden>
 
        Remove three forks per _AC_RUN_LOG_STDERR in the common case.
diff --git a/lib/autoconf/types.m4 b/lib/autoconf/types.m4
index 6360d40..b8fc81a 100644
--- a/lib/autoconf/types.m4
+++ b/lib/autoconf/types.m4
@@ -248,17 +248,16 @@ m4_define([_AC_CHECK_TYPE_MAYBE_TYPE_P],
 # 3. $2 seems to be a type          => NEW plus a warning
 # 4. default                        => NEW
 AC_DEFUN([AC_CHECK_TYPE],
-[m4_if($#, 3,
-        [_AC_CHECK_TYPE_NEW($@)],
-       $#, 4,
-        [_AC_CHECK_TYPE_NEW($@)],
-       _AC_CHECK_TYPE_REPLACEMENT_TYPE_P([$2]), 1,
-        [_AC_CHECK_TYPE_OLD($@)],
-       _AC_CHECK_TYPE_MAYBE_TYPE_P([$2]), 1,
-        [AC_DIAGNOSE([syntax],
-                   [$0: assuming `$2' is not a type])_AC_CHECK_TYPE_NEW($@)],
-       [_AC_CHECK_TYPE_NEW($@)])[]dnl
-])# AC_CHECK_TYPE
+[m4_cond([$#], [3],
+  [_AC_CHECK_TYPE_NEW],
+        [$#], [4],
+  [_AC_CHECK_TYPE_NEW],
+        [_AC_CHECK_TYPE_REPLACEMENT_TYPE_P([$2])], [1],
+  [_AC_CHECK_TYPE_OLD],
+        [_AC_CHECK_TYPE_MAYBE_TYPE_P([$2])], [1],
+  [AC_DIAGNOSE([syntax],
+              [$0: assuming `$2' is not a type])_AC_CHECK_TYPE_NEW],
+  [_AC_CHECK_TYPE_NEW])($@)])# AC_CHECK_TYPE
 
 
 


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