Changes to support rand48 tests

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

6 files changed, 64 insertions, 34 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++])])
+ ])