workaround strict aliasing warnings on individual files rather than
forcing the whole build with -fno-strict-aliasing

http://bugs.gentoo.org/155906

note that we leave the logout.c and logwtmp.c warnings alone as the
code path that invokes the warning should not be executed when the
warning is applicable.

---
 libio/Makefile  |    4 ++--
 nis/Makefile    |    3 +++
 nptl/Makefile   |    1 +
 nss/Makefile    |    2 ++
 sunrpc/Makefile |    2 +-
 5 files changed, 9 insertions(+), 3 deletions(-)

Index: glibc-2.8-20080811/libio/Makefile
===================================================================
--- glibc-2.8-20080811.orig/libio/Makefile
+++ glibc-2.8-20080811/libio/Makefile
@@ -91,7 +91,7 @@ CFLAGS-fseeko.c = $(exceptions)
 CFLAGS-ftello64.c = $(exceptions)
 CFLAGS-ftello.c = $(exceptions)
 CFLAGS-fwide.c = $(exceptions)
-CFLAGS-genops.c = $(exceptions)
+CFLAGS-genops.c = $(exceptions) -fno-strict-aliasing
 CFLAGS-getc.c = $(exceptions)
 CFLAGS-getchar.c = $(exceptions)
 CFLAGS-getwc.c = $(exceptions)
@@ -133,7 +133,7 @@ CFLAGS-putwc.c = $(exceptions)
 CFLAGS-putwchar.c = $(exceptions)
 CFLAGS-rewind.c = $(exceptions)
 CFLAGS-wfileops.c = $(exceptions)
-CFLAGS-wgenops.c = $(exceptions)
+CFLAGS-wgenops.c = $(exceptions) -fno-strict-aliasing
 CFLAGS-oldiofopen.c = $(exceptions)
 CFLAGS-iofopen.c = $(exceptions)
 CFLAGS-iofopen64.c = $(exceptions)
Index: glibc-2.8-20080811/nis/Makefile
===================================================================
--- glibc-2.8-20080811.orig/nis/Makefile
+++ glibc-2.8-20080811/nis/Makefile
@@ -67,6 +67,9 @@ libnss_nisplus-routines	:= $(addprefix n
 			   nss-nisplus nisplus-initgroups
 libnss_nisplus-inhibit-o = $(filter-out .os,$(object-suffixes))
 
+CFLAGS-nis_xdr.c += -fno-strict-aliasing
+CFLAGS-yp_xdr.c += -fno-strict-aliasing
+
 include ../Rules
 
 
Index: glibc-2.8-20080811/nptl/Makefile
===================================================================
--- glibc-2.8-20080811.orig/nptl/Makefile
+++ glibc-2.8-20080811/nptl/Makefile
@@ -193,6 +193,7 @@ CFLAGS-tcdrain.c = -fexceptions -fasynch
 
 CFLAGS-pt-system.c = -fexceptions
 
+CFLAGS-unwind-dw2.c += -fno-strict-aliasing
 
 tests = tst-typesizes \
 	tst-attr1 tst-attr2 tst-attr3 \
Index: glibc-2.8-20080811/nss/Makefile
===================================================================
--- glibc-2.8-20080811.orig/nss/Makefile
+++ glibc-2.8-20080811/nss/Makefile
@@ -72,6 +72,8 @@ ifneq ($(build-static-nss),yes)
 libnss_files-inhibit-o	= $(filter-out .os,$(object-suffixes))
 endif
 
+CFLAGS-nsswitch.c += -fno-strict-aliasing
+
 include ../Rules
 
 
Index: glibc-2.8-20080811/sunrpc/Makefile
===================================================================
--- glibc-2.8-20080811.orig/sunrpc/Makefile
+++ glibc-2.8-20080811/sunrpc/Makefile
@@ -127,7 +127,7 @@ CFLAGS-pmap_rmt.c = -fexceptions
 CFLAGS-clnt_perr.c = -fexceptions
 CFLAGS-openchild.c = -fexceptions
 
-CPPFLAGS += -D_RPC_THREAD_SAFE_
+CPPFLAGS += -D_RPC_THREAD_SAFE_ -fno-strict-aliasing
 
 include ../Rules