Index: gcc-4.5/Makefile.def
===================================================================
--- gcc-4.5.orig/Makefile.def
+++ gcc-4.5/Makefile.def
@@ -240,6 +240,7 @@ flags_to_pass = { flag= AWK ; };
 flags_to_pass = { flag= BISON ; };
 flags_to_pass = { flag= CC_FOR_BUILD ; };
 flags_to_pass = { flag= CFLAGS_FOR_BUILD ; };
+flags_to_pass = { flag= CPPFLAGS_FOR_BUILD ; };
 flags_to_pass = { flag= CXX_FOR_BUILD ; };
 flags_to_pass = { flag= EXPECT ; };
 flags_to_pass = { flag= FLEX ; };
Index: gcc-4.5/gcc/Makefile.in
===================================================================
--- gcc-4.5.orig/gcc/Makefile.in
+++ gcc-4.5/gcc/Makefile.in
@@ -766,7 +766,7 @@ BUILD_LINKERFLAGS = $(BUILD_CFLAGS)
 
 # Native linker and preprocessor flags.  For x-fragment overrides.
 BUILD_LDFLAGS=@BUILD_LDFLAGS@
-BUILD_CPPFLAGS=$(ALL_CPPFLAGS)
+BUILD_CPPFLAGS=$(INCLUDES) @BUILD_CPPFLAGS@ $(X_CPPFLAGS)
 
 # Actual name to use when installing a native compiler.
 GCC_INSTALL_NAME := $(shell echo gcc|sed '$(program_transform_name)')
Index: gcc-4.5/gcc/configure.ac
===================================================================
--- gcc-4.5.orig/gcc/configure.ac
+++ gcc-4.5/gcc/configure.ac
@@ -1798,16 +1798,18 @@ AC_SUBST(inhibit_libc)
 # Also, we cannot run fixincludes.
 
 # These are the normal (build=host) settings:
-CC_FOR_BUILD='$(CC)'		AC_SUBST(CC_FOR_BUILD)
-BUILD_CFLAGS='$(ALL_CFLAGS)'	AC_SUBST(BUILD_CFLAGS)
-BUILD_LDFLAGS='$(LDFLAGS)'	AC_SUBST(BUILD_LDFLAGS)
-STMP_FIXINC=stmp-fixinc		AC_SUBST(STMP_FIXINC)
+CC_FOR_BUILD='$(CC)'			AC_SUBST(CC_FOR_BUILD)
+BUILD_CFLAGS='$(ALL_CFLAGS)'		AC_SUBST(BUILD_CFLAGS)
+BUILD_LDFLAGS='$(LDFLAGS)'		AC_SUBST(BUILD_LDFLAGS)
+BUILD_CPPFLAGS='$(ALL_CPPFLAGS)'	AC_SUBST(BUILD_CPPFLAGS)
+STMP_FIXINC=stmp-fixinc			AC_SUBST(STMP_FIXINC)
 
 # And these apply if build != host, or we are generating coverage data
 if test x$build != x$host || test "x$coverage_flags" != x
 then
     BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
     BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
+    BUILD_CPPFLAGS='$(CPPFLAGS_FOR_BUILD)'
 fi
 
 # Expand extra_headers to include complete path.
Index: gcc-4.5/Makefile.in
===================================================================
--- gcc-4.5.orig/Makefile.in
+++ gcc-4.5/Makefile.in
@@ -333,6 +333,7 @@ AR_FOR_BUILD = @AR_FOR_BUILD@
 AS_FOR_BUILD = @AS_FOR_BUILD@
 CC_FOR_BUILD = @CC_FOR_BUILD@
 CFLAGS_FOR_BUILD = @CFLAGS_FOR_BUILD@
+CPPFLAGS_FOR_BUILD = @CPPFLAGS_FOR_BUILD@
 CXXFLAGS_FOR_BUILD = @CXXFLAGS_FOR_BUILD@
 CXX_FOR_BUILD = @CXX_FOR_BUILD@
 DLLTOOL_FOR_BUILD = @DLLTOOL_FOR_BUILD@
@@ -662,6 +663,7 @@ BASE_FLAGS_TO_PASS = \
 	"BISON=$(BISON)" \
 	"CC_FOR_BUILD=$(CC_FOR_BUILD)" \
 	"CFLAGS_FOR_BUILD=$(CFLAGS_FOR_BUILD)" \
+	"CPPFLAGS_FOR_BUILD=$(CPPFLAGS_FOR_BUILD)" \
 	"CXX_FOR_BUILD=$(CXX_FOR_BUILD)" \
 	"EXPECT=$(EXPECT)" \
 	"FLEX=$(FLEX)" \
Index: gcc-4.5/gcc/configure
===================================================================
--- gcc-4.5.orig/gcc/configure
+++ gcc-4.5/gcc/configure
@@ -707,6 +707,7 @@ SED
 LIBTOOL
 collect2
 STMP_FIXINC
+BUILD_CPPFLAGS
 BUILD_LDFLAGS
 BUILD_CFLAGS
 CC_FOR_BUILD
@@ -10982,6 +10983,7 @@ fi
 CC_FOR_BUILD='$(CC)'
 BUILD_CFLAGS='$(ALL_CFLAGS)'
 BUILD_LDFLAGS='$(LDFLAGS)'
+BUILD_CPPFLAGS='$(ALL_CPPFLAGS)'
 STMP_FIXINC=stmp-fixinc
 
 # And these apply if build != host, or we are generating coverage data
@@ -10989,6 +10991,7 @@ if test x$build != x$host || test "x$cov
 then
     BUILD_CFLAGS='$(INTERNAL_CFLAGS) $(T_CFLAGS) $(CFLAGS_FOR_BUILD)'
     BUILD_LDFLAGS='$(LDFLAGS_FOR_BUILD)'
+    BUILD_CPPFLAGS='$(CPPFLAGS_FOR_BUILD)'
 fi
 
 # Expand extra_headers to include complete path.
@@ -17108,7 +17111,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 17111 "configure"
+#line 17114 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -17214,7 +17217,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 17217 "configure"
+#line 17220 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
Index: gcc-4.5/Makefile.tpl
===================================================================
--- gcc-4.5.orig/Makefile.tpl
+++ gcc-4.5/Makefile.tpl
@@ -336,6 +336,7 @@ AR_FOR_BUILD = @AR_FOR_BUILD@
 AS_FOR_BUILD = @AS_FOR_BUILD@
 CC_FOR_BUILD = @CC_FOR_BUILD@
 CFLAGS_FOR_BUILD = @CFLAGS_FOR_BUILD@
+CPPFLAGS_FOR_BUILD = @CPPFLAGS_FOR_BUILD@
 CXXFLAGS_FOR_BUILD = @CXXFLAGS_FOR_BUILD@
 CXX_FOR_BUILD = @CXX_FOR_BUILD@
 DLLTOOL_FOR_BUILD = @DLLTOOL_FOR_BUILD@
Index: gcc-4.5/configure
===================================================================
--- gcc-4.5.orig/configure
+++ gcc-4.5/configure
@@ -651,6 +651,7 @@ GCJ_FOR_BUILD
 DLLTOOL_FOR_BUILD
 CXX_FOR_BUILD
 CXXFLAGS_FOR_BUILD
+CPPFLAGS_FOR_BUILD
 CFLAGS_FOR_BUILD
 CC_FOR_BUILD
 AS_FOR_BUILD
@@ -8036,6 +8037,7 @@ esac
 # our build compiler if desired.
 if test x"${build}" = x"${host}" ; then
   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
+  CPPFLAGS_FOR_BUILD=${CPPFLAGS_FOR_BUILD-${CPPFLAGS}}
   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
 fi
@@ -8101,6 +8103,7 @@ done
 
 
 
+
 
 
 
Index: gcc-4.5/configure.ac
===================================================================
--- gcc-4.5.orig/configure.ac
+++ gcc-4.5/configure.ac
@@ -3089,6 +3089,7 @@ esac
 # our build compiler if desired.
 if test x"${build}" = x"${host}" ; then
   CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
+  CPPFLAGS_FOR_BUILD=${CPPFLAGS_FOR_BUILD-${CPPFLAGS}}
   CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
   LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
 fi
@@ -3155,6 +3156,7 @@ AC_SUBST(AR_FOR_BUILD)
 AC_SUBST(AS_FOR_BUILD)
 AC_SUBST(CC_FOR_BUILD)
 AC_SUBST(CFLAGS_FOR_BUILD)
+AC_SUBST(CPPFLAGS_FOR_BUILD)
 AC_SUBST(CXXFLAGS_FOR_BUILD)
 AC_SUBST(CXX_FOR_BUILD)
 AC_SUBST(DLLTOOL_FOR_BUILD)
