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The following type of warning errors...

  ../../../source/tools/acpibin/abcompare.c: In function 'AbCompareAmlFiles':
  ../../../source/tools/acpibin/abcompare.c:462:5: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
       if (*((UINT32 *) Header1.Signature) != *((UINT32 *) Header2.Signature))

results from '-fstrict-aliasing', which is turned on by the specifying of
the '-O2' optimization option. The solution is to turn it off by specifying
'-fno-strict-aliasing'. At least, this appears to be a better solution
than leaving it turned on but disabling the warnings by specifying
'-Wstrict-aliasing=0'.

diff -urN a/generate/unix/Makefile.config b/generate/unix/Makefile.config
--- a/generate/unix/Makefile.config	2013-10-18 09:39:50.897095584 -0500
+++ b/generate/unix/Makefile.config	2013-10-18 09:46:03.069129999 -0500
@@ -125,7 +125,7 @@
 #   The _GNU_SOURCE symbol is required for many hosts.
 #
 OPT_CFLAGS ?= \
-    -O2 -D_FORTIFY_SOURCE=2\
+    -O2 -D_FORTIFY_SOURCE=2 -fno-strict-aliasing\
     $(CWARNINGFLAGS)

 CFLAGS += \
@@ -146,7 +146,6 @@
     -Wformat=2\
     -Wmissing-declarations\
     -Wmissing-prototypes\
-    -Wstrict-aliasing=0\
     -Wstrict-prototypes\
     -Wswitch-default\
     -Wpointer-arith\