diff --git a/rhbz711427.patch b/rhbz711427.patch
index b3c1227..fb6e1a5 100644
--- a/rhbz711427.patch
+++ b/rhbz711427.patch
@@ -7,11 +7,52 @@ Date:   Fri Jun 10 09:42:43 2011 -0400
     dtrace.in (main):  Use suffix for both -h and -G.  Check gcc return code.
     dtrace.exp:  Massage results accordingly.
 
+commit f6b267eb5f999ce380f1169ba4aa81945b8b8fd2
+Author: Stan Cox <scox@redhat.com>
+Date:   Tue Jun 14 16:16:59 2011 -0400
+
+    Improve dtrace handling of CC environment variable.
+    
+    * dtrace.in (main): Split CC to allow for application Makefile abuse.
+
+commit 4c353c3a6d5a7b75c3e897f1605ae6a98b0b1951
+Author: Stan Cox <scox@redhat.com>
+Date:   Tue Jun 14 17:36:23 2011 -0400
+
+    Split command line pieces with shlex
+    
+    dtrace.in (main):  Use shlex.split for CPP, CC, and CFLAGS
+
+commit 12aad6f0ee85529fa29d6b0790f7afc6f075a808
+Author: Stan Cox <scox@redhat.com>
+Date:   Wed Jun 15 15:52:38 2011 -0400
+
+    Do status setting and exit at the top level.
+    
+    * dtrace.in (main): Use return instead of sys.exit; move sys.exit to top.
+
 diff --git a/dtrace.in b/dtrace.in
-index a64d110..91762bd 100755
+index a64d110..c1ea1fe 100755
 --- a/dtrace.in
 +++ b/dtrace.in
-@@ -191,7 +191,7 @@ def main():
+@@ -17,6 +17,7 @@ import os
+ import posix
+ import string
+ import sys
++import shlex
+ from subprocess import call
+ from tempfile import mkstemp
+ 
+@@ -179,7 +180,7 @@ def help ():
+ def main():
+     if (len(sys.argv) < 2):
+         usage()
+-        sys.exit(1)
++        return 1
+ 
+     i = 1
+     build_header = False
+@@ -187,7 +188,7 @@ def main():
      add_typedefs = False
      keep_temps = False
      use_cpp = False
@@ -20,7 +61,7 @@ index a64d110..91762bd 100755
      filename = ""
      s_filename = ""
      includes = []
-@@ -209,10 +209,12 @@ def main():
+@@ -205,10 +206,12 @@ def main():
              defines.append(sys.argv[i])
          elif (sys.argv[i] == "-h"):
              build_header = True
@@ -33,9 +74,33 @@ index a64d110..91762bd 100755
          elif (sys.argv[i] == "-k"):
              keep_temps = True
          elif (sys.argv[i] == "--types"):
-@@ -242,13 +244,10 @@ def main():
+@@ -218,17 +221,16 @@ def main():
+         i += 1
+     if (build_header == False and build_source == False):
+         usage()
+-        sys.exit(1)
++        return 1
+ 
+     if (s_filename != "" and use_cpp):
+         (d,fn) = mkstemp(suffix=".d")
+         CPP = os.environ.get("CPP", "cpp")
+-        args = [CPP] + includes + defines + [s_filename, fn]
+-        retcode = call(args)
++        retcode = call(shlex.split(CPP) + includes + defines + [s_filename, fn])
+         if (retcode != 0):
+             print "\"cpp includes s_filename\" failed"
              usage()
-             sys.exit(1)
+-            sys.exit(1)
++            return 1
+         s_filename = fn
+     if (filename == ""):
+         if (s_filename != ""):
+@@ -236,15 +238,12 @@ def main():
+             filename = os.path.basename(filename)
+         else:
+             usage()
+-            sys.exit(1)
++            return 1
      else:
 -        if (build_header):
 -            h_ext = ""
@@ -49,22 +114,32 @@ index a64d110..91762bd 100755
      elif (build_source):
          (basename,ext) = os.path.splitext(s_filename)
  
-@@ -269,9 +268,13 @@ def main():
+@@ -265,9 +264,13 @@ def main():
          f.close()
          CC = os.environ.get("CC", "gcc")
          CFLAGS = "-g " + os.environ.get("CFLAGS", "")
 -        call([CC, "-fPIC"] + defines + includes + CFLAGS.split() +
-+        retcode = call([CC, "-fPIC"] + defines + includes + CFLAGS.split() +
-              ["-I.", "-I@prefix@/include", "-c", fn, "-o",
+-             ["-I.", "-I@prefix@/include", "-c", fn, "-o",
 -              filename + ".o"], shell=False)
++        retcode = call(shlex.split(CC) + defines + includes + shlex.split(CFLAGS) +
++             ["-fPIC", "-I.", "-I@prefix@/include", "-c", fn, "-o",
 +              filename + suffix], shell=False)
 +        if (retcode != 0):
 +            print "\"gcc " + fn + "\" failed"
 +            usage()
-+            sys.exit(1)
++            return 1
          if (not keep_temps):
              os.remove(fn)
          else:
+@@ -277,6 +280,7 @@ def main():
+                 os.remove(s_filename)
+             else:
+                 print "cpp: " + s_filename
++    return 0
+ 
+ if __name__ == "__main__":
+-    main()
++    sys.exit(main())
 diff --git a/testsuite/systemtap.base/dtrace.exp b/testsuite/systemtap.base/dtrace.exp
 index b301793..cd97c79 100644
 --- a/testsuite/systemtap.base/dtrace.exp
diff --git a/systemtap.spec b/systemtap.spec
index 4ac2006..0a31eaf 100644
--- a/systemtap.spec
+++ b/systemtap.spec
@@ -16,7 +16,7 @@
 
 Name: systemtap
 Version: 1.5
-Release: 3%{?dist}
+Release: 4%{?dist}
 # for version, see also configure.ac
 Summary: Instrumentation System
 Group: Development/System
@@ -503,6 +503,9 @@ exit 0
 
 
 %changelog
+* Fri Jun 10 2011 Stan Cox <scox@redhat.com> - 1.5-4
+- Split $CC
+
 * Fri Jun 10 2011 Stan Cox <scox@redhat.com> - 1.5-3
 - Don't massage dtrace -o FILENAME arg