commit b571f9347c4a54facadb5e948e1430bd2b89158a
Author: Stan Cox <scox@redhat.com>
Date:   Fri Jun 10 09:42:43 2011 -0400

    Don't process the dtrace -o FILENAME.
    
    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..c1ea1fe 100755
--- a/dtrace.in
+++ b/dtrace.in
@@ -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
-    h_ext = '.h'
+    suffix = ""
     filename = ""
     s_filename = ""
     includes = []
@@ -205,10 +206,12 @@ def main():
             defines.append(sys.argv[i])
         elif (sys.argv[i] == "-h"):
             build_header = True
+            suffix = ".h"
         elif (sys.argv[i].startswith("-I")):
             includes.append(sys.argv[i])
         elif (sys.argv[i] == "-G"):
             build_source = True
+            suffix = ".o"
         elif (sys.argv[i] == "-k"):
             keep_temps = True
         elif (sys.argv[i] == "--types"):
@@ -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)
+            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 = ""
-        else:
-            (filename,ext) = os.path.splitext(filename)
+        suffix = ""
     if (build_header):
         providers = _provider()
-        providers.generate(s_filename, filename + h_ext, add_typedefs)
+        providers.generate(s_filename, filename + suffix, add_typedefs)
     elif (build_source):
         (basename,ext) = os.path.splitext(s_filename)
 
@@ -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() +
-             ["-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()
+            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
+++ b/testsuite/systemtap.base/dtrace.exp
@@ -60,12 +60,12 @@ exec rm -f XXX.o
 
 verbose -log "$dtrace -G -s $dpath -o XXX"
 catch {exec $dtrace -G -s $dpath -o XXX}
-if {[file exists XXX.o]} then {
+if {[file exists XXX]} then {
     pass "dtrace -G -o XXX"
 } else {
     fail "dtrace -G -o XXX"
 }
-exec rm -f XXX.o
+exec rm -f XXX
 
 verbose -log "$dtrace -h -s $dpath -o XXX.h"
 catch {exec $dtrace -h -s $dpath -o XXX.h}
@@ -96,12 +96,12 @@ exec rm -f /tmp/XXX.o
 
 verbose -log "$dtrace -G -s $dpath -o /tmp/XXX"
 catch {exec $dtrace -G -s $dpath -o /tmp/XXX}
-if {[file exists /tmp/XXX.o]} then {
-    pass "dtrace -G -o /tmp/XXX.o"
+if {[file exists /tmp/XXX]} then {
+    pass "dtrace -G -o /tmp/XXX"
 } else {
-    fail "dtrace -G -o /tmp/XXX.o"
+    fail "dtrace -G -o /tmp/XXX"
 }
-exec rm -f /tmp/XXX.o
+exec rm -f /tmp/XXX
 
 verbose -log "$dtrace -h -s $dpath -o /tmp/XXX.h"
 catch {exec $dtrace -h -s $dpath -o /tmp/XXX.h}