diff --git a/configure b/configure
index 5ba46b4..4f70a4c 100755
--- a/configure
+++ b/configure
@@ -2269,7 +2269,8 @@
   program_prefix=${target_alias}-
 
 case $build in
-	*i*86*)  OS=Linux
+	*-*-linux*)
+             OS=Linux
 
 			 if test -d /home/vadve/lattner/local/x86/llvm-gcc
 			 then
@@ -2278,7 +2279,8 @@
 			 fi
 	         ;;
 
-	*sparc*) OS=SunOS
+	*-*-solaris*)
+             OS=SunOS
 
 			 if test -d /home/vadve/lattner/local/sparc/llvm-gcc
 			 then
@@ -2287,22 +2289,33 @@
 			 fi
 	         ;;
 
+	*-*-darwin*)
+             OS=Darwin
+
+	         ;;
+
 	*)       OS=Unknown
 
 	         ;;
 esac
 
 case $target in
-	*sparc*solaris*)  target=sparcv9-sun-solaris2.8
+	sparc*-*-solaris*)  target=sparcv9-sun-solaris2.8
 
-	                  ;;
+	                    ;;
 esac
 
 case $target in
-	*i*86*)           ARCH=x86
+	i*86-*)           ARCH=x86
 
 	                  ;;
-	*sparc*solaris*)  ARCH=Sparc
+	sparc*-*)         ARCH=Sparc
+
+	                  ;;
+	powerpc*-*)       ARCH=PowerPC
+
+	                  ;;
+	*)                ARCH=Unknown
 
 	                  ;;
 esac
@@ -4458,7 +4471,7 @@
   ;;
 *-*-irix6*)
   # Find out which ABI we are using.
-  echo '#line 4461 "configure"' > conftest.$ac_ext
+  echo '#line 4474 "configure"' > conftest.$ac_ext
   if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   (eval $ac_compile) 2>&5
   ac_status=$?
@@ -5299,7 +5312,7 @@
 
 
 # Provide some information about the compiler.
-echo "$as_me:5302:" \
+echo "$as_me:5315:" \
      "checking for Fortran 77 compiler version" >&5
 ac_compiler=`set X $ac_compile; echo $2`
 { (eval echo "$as_me:$LINENO: \"$ac_compiler --version </dev/null >&5\"") >&5
@@ -6308,11 +6321,11 @@
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:6311: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:6324: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:6315: \$? = $ac_status" >&5
+   echo "$as_me:6328: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -6540,11 +6553,11 @@
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:6543: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:6556: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:6547: \$? = $ac_status" >&5
+   echo "$as_me:6560: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -6607,11 +6620,11 @@
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:6610: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:6623: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:6614: \$? = $ac_status" >&5
+   echo "$as_me:6627: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -8619,7 +8632,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 8622 "configure"
+#line 8635 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -8717,7 +8730,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 8720 "configure"
+#line 8733 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -10853,11 +10866,11 @@
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:10856: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:10869: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:10860: \$? = $ac_status" >&5
+   echo "$as_me:10873: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -10920,11 +10933,11 @@
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:10923: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:10936: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:10927: \$? = $ac_status" >&5
+   echo "$as_me:10940: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -12163,7 +12176,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 12166 "configure"
+#line 12179 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12261,7 +12274,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 12264 "configure"
+#line 12277 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -13083,11 +13096,11 @@
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:13086: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:13099: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:13090: \$? = $ac_status" >&5
+   echo "$as_me:13103: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -13150,11 +13163,11 @@
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:13153: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:13166: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:13157: \$? = $ac_status" >&5
+   echo "$as_me:13170: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -15094,11 +15107,11 @@
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:15097: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:15110: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:15101: \$? = $ac_status" >&5
+   echo "$as_me:15114: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -15326,11 +15339,11 @@
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:15329: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:15342: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:15333: \$? = $ac_status" >&5
+   echo "$as_me:15346: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -15393,11 +15406,11 @@
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:15396: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:15409: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:15400: \$? = $ac_status" >&5
+   echo "$as_me:15413: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -17405,7 +17418,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 17408 "configure"
+#line 17421 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -17503,7 +17516,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 17506 "configure"
+#line 17519 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H