X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=autoconf%2Fm4%2Fc_printf_a.m4;h=61bac8c9dd1189d50e78f2ba3fd78777ef7897a8;hb=1b0dc64919e947bb4f4677b138c734e33061f7c4;hp=62ed2ac8d7538d11c298f9f2602a9e2a5a8ed688;hpb=491f6812ef173989612d987fa8706fd38e2e673f;p=oota-llvm.git

diff --git a/autoconf/m4/c_printf_a.m4 b/autoconf/m4/c_printf_a.m4
index 62ed2ac8d75..61bac8c9dd1 100644
--- a/autoconf/m4/c_printf_a.m4
+++ b/autoconf/m4/c_printf_a.m4
@@ -3,29 +3,29 @@
 # This is modified from:
 # http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_have_ext_slist.html
 AC_DEFUN([AC_C_PRINTF_A],
-[
-        AC_MSG_CHECKING([for printf %a format specifier])
-	AC_LANG_SAVE
-	AC_LANG_C
-	AC_RUN_IFELSE(
-		AC_LANG_PROGRAM([#include <stdio.h>
-		                 #include <stdlib.h>],
-		                 [[[
-		                 volatile double A, B;
-		                 char Buffer[100];
-		                 A = 1;
-		                 A /= 10.0;
-		                 sprintf(Buffer, "%a", A);
-		                 B = atof(Buffer);
-		                 if (A != B)
-							 return (1);
-		                 if (A != 0x1.999999999999ap-4)
-							 return (1);
-		                 return (0);]]]),
-		ac_c_printf_a=yes,ac_c_printf_a=no)
-	AC_LANG_RESTORE
-        AC_MSG_RESULT($ac_c_printf_a)
-	if test "$ac_c_printf_a" = "yes"; then
-		AC_DEFINE([HAVE_PRINTF_A],[1],[Define to have the %a format string])
-	fi
+[AC_CACHE_CHECK([if printf has the %a format character],[llvm_cv_c_printf_a],
+[AC_LANG_PUSH([C])
+ AC_RUN_IFELSE([
+  AC_LANG_PROGRAM([[
+#include <stdio.h>
+#include <stdlib.h>
+]],[[
+volatile double A, B;
+char Buffer[100];
+A = 1;
+A /= 10.0;
+sprintf(Buffer, "%a", A);
+B = atof(Buffer);
+if (A != B)
+  return (1);
+if (A != 0x1.999999999999ap-4)
+  return (1);
+return (0);]])],
+  llvm_cv_c_printf_a=yes,
+  llvmac_cv_c_printf_a=no,
+  llvmac_cv_c_printf_a=no)
+ AC_LANG_POP([C])])
+ if test "$llvm_cv_c_printf_a" = "yes"; then
+   AC_DEFINE([HAVE_PRINTF_A],[1],[Define to have the %a format string])
+ fi
 ])