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Speed up AC_CHECK_TYPE.

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* lib/autoconf/types.m4 (AC_CHECK_TYPE): Factor out $@, and avoid
regex when enough arguments are present.

Signed-off-by: Eric Blake <ebb9@byu.net>
This commit is contained in:
Eric Blake 2008-11-06 16:29:53 -07:00
parent 359be416a7
commit 3d6b5007ca
2 changed files with 16 additions and 11 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2008-11-06 Eric Blake <ebb9@byu.net>
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 <bonzini@gnu.org>
Remove three forks per _AC_RUN_LOG_STDERR in the common case.

21
lib/autoconf/types.m4
View File

@ -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