From 2b9df35cd0d8a4a710c9c836ed4a6abef1986221 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 11 Mar 2009 20:27:07 +0000
Subject: * configure.in (RUBY_CHECK_HUGE): checks whether a value range is  
 larger than long.

* file.c (rb_stat_blocks): struct stat.st_blocks may be larger
  than long.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22903 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 configure.in | 33 ++++++++++++++++++++++-----------
 1 file changed, 22 insertions(+), 11 deletions(-)

(limited to 'configure.in')

diff --git a/configure.in b/configure.in
index 43ddf738e2..82d1de68f1 100644
--- a/configure.in
+++ b/configure.in
@@ -894,12 +894,32 @@ AC_CHECK_SIZEOF(rlim_t, 0, [
 ])
 
 dnl Checks for typedefs, structures, and compiler characteristics.
+AC_DEFUN([RUBY_CHECK_HUGE],
+    [AC_CACHE_CHECK([whether $1 is huge], AS_TR_SH(rb_cv_huge_$1),
+[AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY(
+[AC_INCLUDES_DEFAULT([$4])
+static m4_bpatsubst([$1], [\..*]) rbcv_var;],
+[dnl
+sizeof(rbcv_var[]m4_bmatch([$1], [\.], .m4_bpatsubst([$1], [^[^.]*\.])))>sizeof(long)]
+)],
+[AS_TR_SH(rb_cv_huge_$1)=yes],
+[AS_TR_SH(rb_cv_huge_$1)=no])])
+if test "${AS_TR_SH(rb_cv_huge_$1)}" = yes; then
+    m4_ifval([$2], [$2], [AC_DEFINE(AS_TR_CPP(HUGE_$1))])
+m4_ifval([$3], [else
+$3
+])
+fi])
+
 AC_TYPE_SIZE_T
 AC_CHECK_SIZEOF(size_t, 0)
 AC_CHECK_SIZEOF(ptrdiff_t, $ac_cv_sizeof_size_t)
 AC_STRUCT_ST_BLKSIZE
 AC_STRUCT_ST_BLOCKS
 AC_STRUCT_ST_RDEV
+if test "$ac_cv_member_struct_stat_st_blocks" = yes; then
+    RUBY_CHECK_HUGE(struct stat.st_blocks)
+fi
 AC_CHECK_MEMBERS([struct stat.st_atim])
 AC_CHECK_MEMBERS([struct stat.st_atimespec])
 AC_CHECK_MEMBERS([struct stat.st_atimensec])
@@ -1314,17 +1334,8 @@ else
   fi
 fi
 
-AC_CACHE_CHECK([whether st_ino is huge], rb_cv_huge_st_ino,
-[AC_COMPILE_IFELSE([AC_LANG_BOOL_COMPILE_TRY([
-#include <sys/stat.h>
-struct stat test_stat;
-], [sizeof(test_stat.st_ino)>sizeof(long)])],
-rb_cv_huge_st_ino=yes,
-rb_cv_huge_st_ino=no)
-])
-if test $rb_cv_huge_st_ino = yes; then
-  AC_DEFINE(HUGE_ST_INO)
-fi
+RUBY_CHECK_HUGE([struct stat.st_ino],
+  [AC_DEFINE(HUGE_ST_INO)], [], [@%:@include <sys/stat.h>])
 
 if test "$ac_cv_func_sysconf" = yes; then
   AC_DEFUN([RUBY_CHECK_SYSCONF], [dnl
-- 
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