Changes to support rand48 tests

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17284 91177308-0d34-0410-b5e6-96231b3b80d8

8 files changed, 255 insertions, 86 deletions

diff --git a/autoconf/AutoRegen.sh b/autoconf/AutoRegen.sh
index c3210bf187..55f56f32c9 100755
--- a/autoconf/AutoRegen.sh
+++ b/autoconf/AutoRegen.sh
@@ -48,5 +48,5 @@ echo "Regenerating configure with autoconf 2.59"
 autoconf --force --warnings=all -o ../$outfile $configfile || die "autoconf failed"
 cd ..
 echo "Regenerating config.h.in with autoheader 2.59"
-autoheader -I autoconf -I autoconf/m4 autoconf/$configfile || die "autoheader failed"
+autoheader --warnings=all -I autoconf -I autoconf/m4 autoconf/$configfile || die "autoheader failed"
 exit 0
diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index 82f1eeedfb..b86ff8d888 100644
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -1,5 +1,5 @@
 dnl Initialize autoconf
-AC_INIT([[LLVM]],[[1.4]],[llvmbugs@cs.uiuc.edu])
+AC_INIT([[llvm]],[[1.4]],[llvmbugs@cs.uiuc.edu])
 
 dnl Place all of the extra autoconf files into the config subdirectory
 dnl Tell various tools where the m4 autoconf macros are
@@ -318,6 +318,7 @@ AC_CXX_HAVE_FWD_ITERATOR
 
 AC_FUNC_ISNAN
 AC_FUNC_ISINF
+AC_FUNC_RAND48
 
 dnl Checks for library functions.
 AC_FUNC_ALLOCA
diff --git a/autoconf/m4/func_isinf.m4 b/autoconf/m4/func_isinf.m4
index dc0c22e925..c372dd8578 100644
--- a/autoconf/m4/func_isinf.m4
+++ b/autoconf/m4/func_isinf.m4
@@ -3,22 +3,34 @@
 # platform.
 #
 AC_DEFUN([AC_FUNC_ISINF],[
-AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_MATH_H],    [ac_cv_func_isinf_in_math_h],   
+AC_SINGLE_CXX_CHECK([ac_cv_func_isinf_in_math_h],   
                     [isinf], [<math.h>],
-                    [#include <math.h>
-                     int foo(float f) {return isinf(f);}])
-AC_SINGLE_CXX_CHECK([HAVE_ISINF_IN_CMATH],     [ac_cv_func_isinf_in_cmath],    
+                    [float f; isinf(f);])
+if test "$ac_cv_func_isinf_in_math_h" = "yes" ; then 
+  AC_DEFINE([HAVE_ISINF_IN_MATH_H],1,[Set to 1 if the isinf function is found in <math.h>])
+fi
+
+AC_SINGLE_CXX_CHECK([ac_cv_func_isinf_in_cmath],    
                     [isinf], [<cmath>],
-                    [#include <cmath>
-                     int foo(float f) {return isinf(f);}])
-AC_SINGLE_CXX_CHECK([HAVE_STD_ISINF_IN_CMATH], [ac_cv_func_std_isinf_in_cmath],
+                    [float f; isinf(f);])
+if test "$ac_cv_func_isinf_in_cmath" = "yes" ; then
+  AC_DEFINE([HAVE_ISINF_IN_CMATH],1,[Set to 1 if the isinf function is found in <cmath>])
+fi
+
+AC_SINGLE_CXX_CHECK([ac_cv_func_std_isinf_in_cmath],
                     [std::isinf], [<cmath>],
-                    [#include <cmath>
-                     using std::isinf; int foo(float f) {return isinf(f);}])
-AC_SINGLE_CXX_CHECK([HAVE_FINITE_IN_IEEEFP_H], [ac_cv_func_finite_in_ieeefp_h],
+                    [float f; std::isinf(f)}])
+if test "$ac_cv_func_std_isinf_in_cmath" = "yes" ; then 
+  AC_DEFINE([HAVE_STD_ISINF_IN_CMATH],1,[Set to 1 if the std::isinf function is found in <cmath>])
+fi
+
+AC_SINGLE_CXX_CHECK([ac_cv_func_finite_in_ieeefp_h],
                     [finite], [<ieeefp.h>],
-                    [#include <ieeefp.h>
-                     int foo(float f) {return finite(f);}])
+                    [float f; finite(f);])
+if test "$ac_cv_func_finite_in_ieefp_h" = "yes" ; then
+  AC_DEFINE([HAVE_FINITE_IN_IEEFP_H],1,[Set to 1 if the finite function is found in <ieeefp.h>])
+fi
+
 ])
 
 
diff --git a/autoconf/m4/func_isnan.m4 b/autoconf/m4/func_isnan.m4
index 8e626fe15b..eb5ca0daeb 100644
--- a/autoconf/m4/func_isnan.m4
+++ b/autoconf/m4/func_isnan.m4
@@ -3,16 +3,25 @@
 # platform.
 #
 AC_DEFUN([AC_FUNC_ISNAN],[
-AC_SINGLE_CXX_CHECK([HAVE_ISNAN_IN_MATH_H],    [ac_cv_func_isnan_in_math_h],   
+AC_SINGLE_CXX_CHECK([ac_cv_func_isnan_in_math_h],   
                     [isnan], [<math.h>],
-                    [#include <math.h>
-                     int foo(float f) {return isnan(f);}])
-AC_SINGLE_CXX_CHECK([HAVE_ISNAN_IN_CMATH],     [ac_cv_func_isnan_in_cmath],    
+                    [float f; isnan(f);])
+
+if test "$ac_cv_func_isnan_in_math_h" = "yes" ; then
+  AC_DEFINE([HAVE_ISNAN_IN_MATH_H],1,[Set to 1 if the isnan function is found in <math.h>])
+fi
+
+AC_SINGLE_CXX_CHECK([ac_cv_func_isnan_in_cmath],    
                     [isnan], [<cmath>],
-                    [#include <cmath>
-                     int foo(float f) {return isnan(f);}])
-AC_SINGLE_CXX_CHECK([HAVE_STD_ISNAN_IN_CMATH], [ac_cv_func_std_isnan_in_cmath],
+                    [float f; isnan(f);])
+if test "$ac_cv_func_isnan_in_cmath" = "yes" ; then
+  AC_DEFINE([HAVE_ISNAN_IN_CMATH],1,[Set to 1 if the isnan function is found in <cmath>])
+fi
+
+AC_SINGLE_CXX_CHECK([ac_cv_func_std_isnan_in_cmath],
                     [std::isnan], [<cmath>],
-                    [#include <cmath>
-                     using std::isnan; int foo(float f) {return isnan(f);}])
+                    [float f; std::isnan(f);])
+if test "$ac_cv_func_std_isnan_in_cmath" = "yes" ; then
+  AC_DEFINE([HAVE_STD_ISNAN_IN_CMATH],1,[Set to 1 if the std::isnan function is found in <cmath>])
+fi
 ])
diff --git a/autoconf/m4/rand48.m4 b/autoconf/m4/rand48.m4
new file mode 100644
index 0000000000..56705d85c9
--- /dev/null
+++ b/autoconf/m4/rand48.m4
@@ -0,0 +1,12 @@
+#
+# This function determins if the the srand48,drand48,lrand48 functions are
+# available on this platform.
+#
+AC_DEFUN([AC_FUNC_RAND48],[
+AC_SINGLE_CXX_CHECK([ac_cv_func_rand48],   
+                    [srand48/lrand48/drand48], [<stdlib.h>],
+                    [srand48(0);lrand48();drand48();])
+if test "$ac_cv_func_rand48" = "yes" ; then
+AC_DEFINE([HAVE_RAND48],1,[Define to 1 if srand48/lrand48/drand48 exist in <stdlib.h>])
+fi
+])
diff --git a/autoconf/m4/single_cxx_check.m4 b/autoconf/m4/single_cxx_check.m4
index 516bc9f605..21efa4bed3 100644
--- a/autoconf/m4/single_cxx_check.m4
+++ b/autoconf/m4/single_cxx_check.m4
@@ -1,14 +1,10 @@
-dnl AC_SINGLE_CXX_CHECK(DEFINEVAR, CACHEVAR, FUNCTION, HEADER, PROGRAM)
-dnl                     $1,        $2,       $3,       $4,     $5
+dnl AC_SINGLE_CXX_CHECK(CACHEVAR, FUNCTION, HEADER, PROGRAM)
+dnl                     $1,       $2,       $3,     $4,     
 dnl 
 AC_DEFUN([AC_SINGLE_CXX_CHECK],
-[AC_CACHE_CHECK([for $3 in $4], [$2],
- [AC_LANG_PUSH([C++])
-  AC_COMPILE_IFELSE(AC_LANG_SOURCE([$5]),[$2=yes],[$2=no])
- AC_LANG_POP([C++])])
- if test "$$2" = "yes"
- then
-   AC_DEFINE($1, 1, [Define to 1 if your compiler defines $3 in the $4
-                     header file.])
- fi])
+ [AC_CACHE_CHECK([for $2 in $3], [$1],
+  [AC_LANG_PUSH([C++])
+   AC_COMPILE_IFELSE(AC_LANG_PROGRAM([#include $3],[$4]),[$1=yes],[$1=no])
+  AC_LANG_POP([C++])])
+ ])
 
diff --git a/configure b/configure
index 9d5b997c92..675d7dabf6 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.59 for LLVM 1.4.
+# Generated by GNU Autoconf 2.59 for llvm 1.4.
 #
 # Report bugs to <llvmbugs@cs.uiuc.edu>.
 #
@@ -421,10 +421,10 @@ SHELL=${CONFIG_SHELL-/bin/sh}
 : ${ac_max_here_lines=38}
 
 # Identity of this package.
-PACKAGE_NAME='LLVM'
+PACKAGE_NAME='llvm'
 PACKAGE_TARNAME='-llvm-'
 PACKAGE_VERSION='1.4'
-PACKAGE_STRING='LLVM 1.4'
+PACKAGE_STRING='llvm 1.4'
 PACKAGE_BUGREPORT='llvmbugs@cs.uiuc.edu'
 
 ac_unique_file=""Makefile.config.in""
@@ -962,7 +962,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures LLVM 1.4 to adapt to many kinds of systems.
+\`configure' configures llvm 1.4 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1024,7 +1024,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of LLVM 1.4:";;
+     short | recursive ) echo "Configuration of llvm 1.4:";;
    esac
   cat <<\_ACEOF
 
@@ -1164,7 +1164,7 @@ fi
 test -n "$ac_init_help" && exit 0
 if $ac_init_version; then
   cat <<\_ACEOF
-LLVM configure 1.4
+llvm configure 1.4
 generated by GNU Autoconf 2.59
 
 Copyright (C) 2003 Free Software Foundation, Inc.
@@ -1178,7 +1178,7 @@ cat >&5 <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by LLVM $as_me 1.4, which was
+It was created by llvm $as_me 1.4, which was
 generated by GNU Autoconf 2.59.  Invocation command line was
 
   $ $0 $@
@@ -22562,14 +22562,20 @@ ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-  cat >conftest.$ac_ext <<_ACEOF
+   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     int foo(float f) {return isnan(f);}
+int
+main ()
+{
+float f; isnan(f);
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -22601,7 +22607,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ac_cv_func_isnan_in_math_h=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
- ac_ext=c
+  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
@@ -22610,14 +22616,16 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 echo "$as_me:$LINENO: result: $ac_cv_func_isnan_in_math_h" >&5
 echo "${ECHO_T}$ac_cv_func_isnan_in_math_h" >&6
- if test "$ac_cv_func_isnan_in_math_h" = "yes"
- then
+
+
+if test "$ac_cv_func_isnan_in_math_h" = "yes" ; then
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_ISNAN_IN_MATH_H 1
 _ACEOF
 
- fi
+fi
+
 echo "$as_me:$LINENO: checking for isnan in <cmath>" >&5
 echo $ECHO_N "checking for isnan in <cmath>... $ECHO_C" >&6
 if test "${ac_cv_func_isnan_in_cmath+set}" = set; then
@@ -22629,14 +22637,20 @@ ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-  cat >conftest.$ac_ext <<_ACEOF
+   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <cmath>
-                     int foo(float f) {return isnan(f);}
+int
+main ()
+{
+float f; isnan(f);
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -22668,7 +22682,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ac_cv_func_isnan_in_cmath=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
- ac_ext=c
+  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
@@ -22677,14 +22691,15 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 echo "$as_me:$LINENO: result: $ac_cv_func_isnan_in_cmath" >&5
 echo "${ECHO_T}$ac_cv_func_isnan_in_cmath" >&6
- if test "$ac_cv_func_isnan_in_cmath" = "yes"
- then
+
+if test "$ac_cv_func_isnan_in_cmath" = "yes" ; then
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_ISNAN_IN_CMATH 1
 _ACEOF
 
- fi
+fi
+
 echo "$as_me:$LINENO: checking for std::isnan in <cmath>" >&5
 echo $ECHO_N "checking for std::isnan in <cmath>... $ECHO_C" >&6
 if test "${ac_cv_func_std_isnan_in_cmath+set}" = set; then
@@ -22696,14 +22711,20 @@ ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-  cat >conftest.$ac_ext <<_ACEOF
+   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <cmath>
-                     using std::isnan; int foo(float f) {return isnan(f);}
+int
+main ()
+{
+float f; std::isnan(f);
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -22735,7 +22756,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ac_cv_func_std_isnan_in_cmath=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
- ac_ext=c
+  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
@@ -22744,14 +22765,14 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 echo "$as_me:$LINENO: result: $ac_cv_func_std_isnan_in_cmath" >&5
 echo "${ECHO_T}$ac_cv_func_std_isnan_in_cmath" >&6
- if test "$ac_cv_func_std_isnan_in_cmath" = "yes"
- then
+
+if test "$ac_cv_func_std_isnan_in_cmath" = "yes" ; then
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_STD_ISNAN_IN_CMATH 1
 _ACEOF
 
- fi
+fi
 
 
 echo "$as_me:$LINENO: checking for isinf in <math.h>" >&5
@@ -22765,14 +22786,20 @@ ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-  cat >conftest.$ac_ext <<_ACEOF
+   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     int foo(float f) {return isinf(f);}
+int
+main ()
+{
+float f; isinf(f);
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -22804,7 +22831,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ac_cv_func_isinf_in_math_h=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
- ac_ext=c
+  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
@@ -22813,14 +22840,15 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 echo "$as_me:$LINENO: result: $ac_cv_func_isinf_in_math_h" >&5
 echo "${ECHO_T}$ac_cv_func_isinf_in_math_h" >&6
- if test "$ac_cv_func_isinf_in_math_h" = "yes"
- then
+
+if test "$ac_cv_func_isinf_in_math_h" = "yes" ; then
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_ISINF_IN_MATH_H 1
 _ACEOF
 
- fi
+fi
+
 echo "$as_me:$LINENO: checking for isinf in <cmath>" >&5
 echo $ECHO_N "checking for isinf in <cmath>... $ECHO_C" >&6
 if test "${ac_cv_func_isinf_in_cmath+set}" = set; then
@@ -22832,14 +22860,20 @@ ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-  cat >conftest.$ac_ext <<_ACEOF
+   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <cmath>
-                     int foo(float f) {return isinf(f);}
+int
+main ()
+{
+float f; isinf(f);
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -22871,7 +22905,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ac_cv_func_isinf_in_cmath=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
- ac_ext=c
+  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
@@ -22880,14 +22914,15 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 echo "$as_me:$LINENO: result: $ac_cv_func_isinf_in_cmath" >&5
 echo "${ECHO_T}$ac_cv_func_isinf_in_cmath" >&6
- if test "$ac_cv_func_isinf_in_cmath" = "yes"
- then
+
+if test "$ac_cv_func_isinf_in_cmath" = "yes" ; then
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_ISINF_IN_CMATH 1
 _ACEOF
 
- fi
+fi
+
 echo "$as_me:$LINENO: checking for std::isinf in <cmath>" >&5
 echo $ECHO_N "checking for std::isinf in <cmath>... $ECHO_C" >&6
 if test "${ac_cv_func_std_isinf_in_cmath+set}" = set; then
@@ -22899,14 +22934,20 @@ ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-  cat >conftest.$ac_ext <<_ACEOF
+   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <cmath>
-                     using std::isinf; int foo(float f) {return isinf(f);}
+int
+main ()
+{
+float f; std::isinf(f)}
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -22938,7 +22979,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ac_cv_func_std_isinf_in_cmath=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
- ac_ext=c
+  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
@@ -22947,14 +22988,15 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 echo "$as_me:$LINENO: result: $ac_cv_func_std_isinf_in_cmath" >&5
 echo "${ECHO_T}$ac_cv_func_std_isinf_in_cmath" >&6
- if test "$ac_cv_func_std_isinf_in_cmath" = "yes"
- then
+
+if test "$ac_cv_func_std_isinf_in_cmath" = "yes" ; then
 
 cat >>confdefs.h <<\_ACEOF
 #define HAVE_STD_ISINF_IN_CMATH 1
 _ACEOF
 
- fi
+fi
+
 echo "$as_me:$LINENO: checking for finite in <ieeefp.h>" >&5
 echo $ECHO_N "checking for finite in <ieeefp.h>... $ECHO_C" >&6
 if test "${ac_cv_func_finite_in_ieeefp_h+set}" = set; then
@@ -22966,14 +23008,20 @@ ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-  cat >conftest.$ac_ext <<_ACEOF
+   cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <ieeefp.h>
-                     int foo(float f) {return finite(f);}
+int
+main ()
+{
+float f; finite(f);
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext
 if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
@@ -23005,7 +23053,7 @@ sed 's/^/| /' conftest.$ac_ext >&5
 ac_cv_func_finite_in_ieeefp_h=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
- ac_ext=c
+  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
@@ -23014,14 +23062,90 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 echo "$as_me:$LINENO: result: $ac_cv_func_finite_in_ieeefp_h" >&5
 echo "${ECHO_T}$ac_cv_func_finite_in_ieeefp_h" >&6
- if test "$ac_cv_func_finite_in_ieeefp_h" = "yes"
- then
+
+if test "$ac_cv_func_finite_in_ieefp_h" = "yes" ; then
 
 cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITE_IN_IEEEFP_H 1
+#define HAVE_FINITE_IN_IEEFP_H 1
 _ACEOF
 
- fi
+fi
+
+
+
+echo "$as_me:$LINENO: checking for srand48/lrand48/drand48 in <stdlib.h>" >&5
+echo $ECHO_N "checking for srand48/lrand48/drand48 in <stdlib.h>... $ECHO_C" >&6
+if test "${ac_cv_func_rand48+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+   cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+int
+main ()
+{
+srand48(0);lrand48();drand48();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_cxx_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_func_rand48=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_func_rand48=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_func_rand48" >&5
+echo "${ECHO_T}$ac_cv_func_rand48" >&6
+
+if test "$ac_cv_func_rand48" = "yes" ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_RAND48 1
+_ACEOF
+
+fi
 
 
 # The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
@@ -24875,7 +24999,7 @@ _ASBOX
 } >&5
 cat >&5 <<_CSEOF
 
-This file was extended by LLVM $as_me 1.4, which was
+This file was extended by llvm $as_me 1.4, which was
 generated by GNU Autoconf 2.59.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -24941,7 +25065,7 @@ _ACEOF
 
 cat >>$CONFIG_STATUS <<_ACEOF
 ac_cs_version="\\
-LLVM config.status 1.4
+llvm config.status 1.4
 configured by $0, generated by GNU Autoconf 2.59,
   with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\"
 
diff --git a/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp b/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
index def406a4b7..2f3469ca85 100644
--- a/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
+++ b/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
@@ -213,6 +213,8 @@ GenericValue lle_X_floor(FunctionType *M, const vector<GenericValue> &Args) {
   return GV;
 }
 
+#ifdef HAVE_RAND48
+
 // double drand48()
 GenericValue lle_X_drand48(FunctionType *M, const vector<GenericValue> &Args) {
   assert(Args.size() == 0);
@@ -236,6 +238,16 @@ GenericValue lle_X_srand48(FunctionType *M, const vector<GenericValue> &Args) {
   return GenericValue();
 }
 
+#endif
+
+// int rand()
+GenericValue lle_X_rand(FunctionType *M, const vector<GenericValue> &Args) {
+  assert(Args.size() == 0);
+  GenericValue GV;
+  GV.IntVal = rand();
+  return GV;
+}
+
 // void srand(uint)
 GenericValue lle_X_srand(FunctionType *M, const vector<GenericValue> &Args) {
   assert(Args.size() == 1);
@@ -676,9 +688,12 @@ void Interpreter::initializeExternalFunctions() {
   FuncNames["lle_X_log"]          = lle_X_log;
   FuncNames["lle_X_floor"]        = lle_X_floor;
   FuncNames["lle_X_srand"]        = lle_X_srand;
+  FuncNames["lle_X_rand"]         = lle_X_rand;
+#ifdef HAVE_RAND48
   FuncNames["lle_X_drand48"]      = lle_X_drand48;
   FuncNames["lle_X_srand48"]      = lle_X_srand48;
   FuncNames["lle_X_lrand48"]      = lle_X_lrand48;
+#endif
   FuncNames["lle_X_sqrt"]         = lle_X_sqrt;
   FuncNames["lle_X_puts"]         = lle_X_puts;
   FuncNames["lle_X_printf"]       = lle_X_printf;