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[SCM] GNU Autoconf source repository branch, master, updated. v2.63-101-
From: |
Eric Blake |
Subject: |
[SCM] GNU Autoconf source repository branch, master, updated. v2.63-101-g89e95fc |
Date: |
Fri, 24 Oct 2008 22:42:27 +0000 |
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http://git.sv.gnu.org/gitweb/?p=autoconf.git;a=commitdiff;h=89e95fc78b3481deb160488b930b498dfc406c2b
The branch, master has been updated
via 89e95fc78b3481deb160488b930b498dfc406c2b (commit)
from 2509abe0dc371ffe74789dac9421d31019822133 (commit)
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- Log -----------------------------------------------------------------
commit 89e95fc78b3481deb160488b930b498dfc406c2b
Author: Eric Blake <address@hidden>
Date: Fri Oct 24 16:41:20 2008 -0600
Speed up AC_CHECK_HEADER.
* lib/autoconf/headers.m4 (AC_CHECK_HEADER): Factor out address@hidden
Signed-off-by: Eric Blake <address@hidden>
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
lib/autoconf/headers.m4 | 10 ++++++----
2 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index 61b5f33..a485066 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2008-10-24 Eric Blake <address@hidden>
+
+ Speed up AC_CHECK_HEADER.
+ * lib/autoconf/headers.m4 (AC_CHECK_HEADER): Factor out address@hidden
+
2008-10-24 Paolo Bonzini <address@hidden>
and Eric Blake <address@hidden>
diff --git a/lib/autoconf/headers.m4 b/lib/autoconf/headers.m4
index 4012107..413be8c 100644
--- a/lib/autoconf/headers.m4
+++ b/lib/autoconf/headers.m4
@@ -84,11 +84,13 @@
#
# If INCLUDES is specified and different from `-', then use the new
# semantics only.
+#
+# The m4_indir allows for fewer expansions of address@hidden
AC_DEFUN([AC_CHECK_HEADER],
-[m4_case([$4],
- [], [_AC_CHECK_HEADER_MONGREL($@)],
- [-], [_AC_CHECK_HEADER_OLD($@)],
- [_AC_CHECK_HEADER_NEW($@)])
+[m4_indir(m4_case([$4],
+ [], [[_AC_CHECK_HEADER_MONGREL]],
+ [-], [[_AC_CHECK_HEADER_OLD]],
+ [[_AC_CHECK_HEADER_NEW]]), $@)
])# AC_CHECK_HEADER
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