Merged revisions 285817 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r285817 | pabelanger | 2010-09-09 18:34:35 -0400 (Thu, 09 Sep 2010) | 8 lines
  
  GCC 4.2.x optimizations result in improper behavior of GSM codec
  
  (closes issue #17688)
  Reported by: pprindeville
  Patches: 
        asterisk-trunk-bugid11243.patch uploaded by pprindeville (license 347)
  Tested by: mkeuter, pprindeville
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@285818 65c4cc65-6c06-0410-ace0-fbb531ad65f3

codecs/gsm/Makefile

@@ -37,6 +37,14 @@ WAV49	= -DWAV49
 ######### ppro's, etc, as well as the AMD K6 and K7.  The compile will
 ######### probably require gcc. 
 
+# Due to the gsm codec beeing broken when compiled with gcc version 4.2
+# and optimization higher than -O2 we are checking for that version and
+# set the optimization to -O2 in this case.
+
+ifeq ($(shell $(CC) -v 2>&1 | awk '/^gcc version/ { split($$3, v, "."); printf "%s.%s\n", v[1], v[2]; }' ),4.2)
+OPTIMIZE=-O2
+endif
+
 ifeq (,$(findstring $(OSARCH),Darwin SunOS))
   ifeq (,$(strip $(findstring $(PROC) ,"x86_64 amd64 ultrasparc sparc64 arm armv5b armeb ppc powerpc ppc64 ia64 s390 bfin mipsel mips ")))
     ifeq (,$(strip $(findstring $(shell uname -m) ,"ppc ppc64 alpha armv4l s390 ")))