PR gdb/921

	PR gdb/1646
	PR gdb/2175
	PR gdb/2176

	* Makefile.def (flags_to_pass): Add CPPFLAGS_FOR_BUILD and CPPFLAGS.
	* Makefile.tpl (BUILD_EXPORTS): Set CPPFLAGS.
	(EXTRA_BUILD_FLAGS): Correct typo.  Pass CPPFLAGS.
	(HOST_EXPORTS): Pass CPPFLAGS.
	(CPPFLAGS_FOR_BUILD, CPPFLAGS, CPPFLAGS_FOR_TARGET): Define.
	(LDFLAGS_FOR_TARGET): Initialize from configure script.
	(EXTRA_TARGET_FLAGS): Set CPPFLAGS.
	* Makefile.in, configure: Regenerated.
	* configure.ac: Set CPPFLAGS_FOR_TARGET, LDFLAGS_FOR_TARGET,
	and CPPFLAGS_FOR_BUILD.

	libiberty/
	* Makefile.in (CPPFLAGS): Define.
	(FLAGS_TO_PASS, COMPILE.c): Add CPPFLAGS.

8 files changed, 68 insertions, 6 deletions

diff --git a/ChangeLog b/ChangeLog
index a811612ace..85e2a74d77 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,21 @@
+2008-10-22  Daniel Jacobowitz  <dan@codesourcery.com>
+
+	PR gdb/921
+	PR gdb/1646
+	PR gdb/2175
+	PR gdb/2176
+
+	* Makefile.def (flags_to_pass): Add CPPFLAGS_FOR_BUILD and CPPFLAGS.
+	* Makefile.tpl (BUILD_EXPORTS): Set CPPFLAGS.
+	(EXTRA_BUILD_FLAGS): Correct typo.  Pass CPPFLAGS.
+	(HOST_EXPORTS): Pass CPPFLAGS.
+	(CPPFLAGS_FOR_BUILD, CPPFLAGS, CPPFLAGS_FOR_TARGET): Define.
+	(LDFLAGS_FOR_TARGET): Initialize from configure script.
+	(EXTRA_TARGET_FLAGS): Set CPPFLAGS.
+	* Makefile.in, configure: Regenerated.
+	* configure.ac: Set CPPFLAGS_FOR_TARGET, LDFLAGS_FOR_TARGET,
+	and CPPFLAGS_FOR_BUILD.
+
 2008-09-29  Peter O'Gorman  <pogma@thewrittenword.com>
 
 	* libtool.m4: Update to libtool 2.2.6.
diff --git a/Makefile.def b/Makefile.def
index 832fc4236e..5abc54f2fa 100644
--- a/Makefile.def
+++ b/Makefile.def
@@ -208,6 +208,7 @@ flags_to_pass = { flag= target_alias ; };
 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 ; };
@@ -232,6 +233,7 @@ flags_to_pass = { flag= BOOT_ADAFLAGS ; optional=true ; };
 flags_to_pass = { flag= BOOT_CFLAGS ; };
 flags_to_pass = { flag= BOOT_LDFLAGS ; };
 flags_to_pass = { flag= CFLAGS ; };
+flags_to_pass = { flag= CPPFLAGS ; };
 flags_to_pass = { flag= CXXFLAGS ; };
 flags_to_pass = { flag= LDFLAGS ; };
 flags_to_pass = { flag= LIBCFLAGS ; };
diff --git a/Makefile.in b/Makefile.in
index 0305d28c93..aaf210be07 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -137,6 +137,7 @@ BUILD_EXPORTS = \
 	CC="$(CC_FOR_BUILD)"; export CC; \
 	CFLAGS="$(CFLAGS_FOR_BUILD)"; export CFLAGS; \
 	CONFIG_SHELL="$(SHELL)"; export CONFIG_SHELL; \
+	CPPFLAGS="$(CPPFLAGS_FOR_BUILD)"; export CPPFLAGS; \
 	CXX="$(CXX_FOR_BUILD)"; export CXX; \
 	CXXFLAGS="$(CXXFLAGS_FOR_BUILD)"; export CXXFLAGS; \
 	GCJ="$(GCJ_FOR_BUILD)"; export GCJ; \
@@ -150,9 +151,10 @@ BUILD_EXPORTS = \
 	WINDMC="$(WINDMC_FOR_BUILD)"; export WINDMC;
 
 # These variables must be set on the make command line for directories
-# built for the build system to override those in BASE_FLAGS_TO_PASSS.
+# built for the build system to override those in BASE_FLAGS_TO_PASS.
 EXTRA_BUILD_FLAGS = \
 	CFLAGS="$(CFLAGS_FOR_BUILD)" \
+	CPPFLAGS="$(CPPFLAGS_FOR_BUILD)" \
 	LDFLAGS="$(LDFLAGS_FOR_BUILD)"
 
 # This is the list of directories to built for the host system.
@@ -172,6 +174,7 @@ HOST_EXPORTS = \
 	ADA_CFLAGS="$(ADA_CFLAGS)"; export ADA_CFLAGS; \
 	CFLAGS="$(CFLAGS)"; export CFLAGS; \
 	CONFIG_SHELL="$(SHELL)"; export CONFIG_SHELL; \
+	CPPFLAGS="$(CFLAGS)"; export CPPFLAGS; \
 	CXX="$(CXX)"; export CXX; \
 	CXXFLAGS="$(CXXFLAGS)"; export CXXFLAGS; \
 	AR="$(AR)"; export AR; \
@@ -275,6 +278,7 @@ 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@
@@ -336,6 +340,7 @@ GNATBIND = @GNATBIND@
 GNATMAKE = @GNATMAKE@
 
 CFLAGS = @CFLAGS@
+CPPFLAGS = @CPPFLAGS@
 LDFLAGS = @LDFLAGS@
 LIBCFLAGS = $(CFLAGS)
 CXXFLAGS = @CXXFLAGS@
@@ -399,13 +404,14 @@ COMPILER_LD_FOR_TARGET=@COMPILER_LD_FOR_TARGET@
 COMPILER_NM_FOR_TARGET=@COMPILER_NM_FOR_TARGET@
 
 CFLAGS_FOR_TARGET = @CFLAGS_FOR_TARGET@
+CPPFLAGS_FOR_TARGET = @CPPFLAGS_FOR_TARGET@
 CXXFLAGS_FOR_TARGET = @CXXFLAGS_FOR_TARGET@
 SYSROOT_CFLAGS_FOR_TARGET = @SYSROOT_CFLAGS_FOR_TARGET@
 DEBUG_PREFIX_CFLAGS_FOR_TARGET = @DEBUG_PREFIX_CFLAGS_FOR_TARGET@
 
 LIBCFLAGS_FOR_TARGET = $(CFLAGS_FOR_TARGET)
 LIBCXXFLAGS_FOR_TARGET = $(CXXFLAGS_FOR_TARGET) -fno-implicit-templates
-LDFLAGS_FOR_TARGET = 
+LDFLAGS_FOR_TARGET = @LDFLAGS_FOR_TARGET@
 
 # ------------------------------------
 # Miscellaneous targets and flag lists
@@ -505,6 +511,7 @@ 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=$(FLEX)" \
@@ -527,6 +534,7 @@ BASE_FLAGS_TO_PASS = \
 	"BOOT_CFLAGS=$(BOOT_CFLAGS)" \
 	"BOOT_LDFLAGS=$(BOOT_LDFLAGS)" \
 	"CFLAGS=$(CFLAGS)" \
+	"CPPFLAGS=$(CPPFLAGS)" \
 	"CXXFLAGS=$(CXXFLAGS)" \
 	"LDFLAGS=$(LDFLAGS)" \
 	"LIBCFLAGS=$(LIBCFLAGS)" \
@@ -617,6 +625,7 @@ EXTRA_TARGET_FLAGS = \
 	'AS=$(COMPILER_AS_FOR_TARGET)' \
 	'CC=$$(CC_FOR_TARGET)' \
 	'CFLAGS=$$(CFLAGS_FOR_TARGET) $(SYSROOT_CFLAGS_FOR_TARGET) $(DEBUG_PREFIX_CFLAGS_FOR_TARGET)' \
+	'CPPFLAGS=$$(CPPFLAGS_FOR_TARGET)' \
 	'CXX=$$(CXX_FOR_TARGET)' \
 	'CXXFLAGS=$$(CXXFLAGS_FOR_TARGET) $(SYSROOT_CFLAGS_FOR_TARGET) $(DEBUG_PREFIX_CFLAGS_FOR_TARGET)' \
 	'DLLTOOL=$$(DLLTOOL_FOR_TARGET)' \
diff --git a/Makefile.tpl b/Makefile.tpl
index 051703eaa8..4847df6cbf 100644
--- a/Makefile.tpl
+++ b/Makefile.tpl
@@ -140,6 +140,7 @@ BUILD_EXPORTS = \
 	CC="$(CC_FOR_BUILD)"; export CC; \
 	CFLAGS="$(CFLAGS_FOR_BUILD)"; export CFLAGS; \
 	CONFIG_SHELL="$(SHELL)"; export CONFIG_SHELL; \
+	CPPFLAGS="$(CPPFLAGS_FOR_BUILD)"; export CPPFLAGS; \
 	CXX="$(CXX_FOR_BUILD)"; export CXX; \
 	CXXFLAGS="$(CXXFLAGS_FOR_BUILD)"; export CXXFLAGS; \
 	GCJ="$(GCJ_FOR_BUILD)"; export GCJ; \
@@ -153,9 +154,10 @@ BUILD_EXPORTS = \
 	WINDMC="$(WINDMC_FOR_BUILD)"; export WINDMC;
 
 # These variables must be set on the make command line for directories
-# built for the build system to override those in BASE_FLAGS_TO_PASSS.
+# built for the build system to override those in BASE_FLAGS_TO_PASS.
 EXTRA_BUILD_FLAGS = \
 	CFLAGS="$(CFLAGS_FOR_BUILD)" \
+	CPPFLAGS="$(CPPFLAGS_FOR_BUILD)" \
 	LDFLAGS="$(LDFLAGS_FOR_BUILD)"
 
 # This is the list of directories to built for the host system.
@@ -175,6 +177,7 @@ HOST_EXPORTS = \
 	ADA_CFLAGS="$(ADA_CFLAGS)"; export ADA_CFLAGS; \
 	CFLAGS="$(CFLAGS)"; export CFLAGS; \
 	CONFIG_SHELL="$(SHELL)"; export CONFIG_SHELL; \
+	CPPFLAGS="$(CFLAGS)"; export CPPFLAGS; \
 	CXX="$(CXX)"; export CXX; \
 	CXXFLAGS="$(CXXFLAGS)"; export CXXFLAGS; \
 	AR="$(AR)"; export AR; \
@@ -278,6 +281,7 @@ 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@
@@ -339,6 +343,7 @@ GNATBIND = @GNATBIND@
 GNATMAKE = @GNATMAKE@
 
 CFLAGS = @CFLAGS@
+CPPFLAGS = @CPPFLAGS@
 LDFLAGS = @LDFLAGS@
 LIBCFLAGS = $(CFLAGS)
 CXXFLAGS = @CXXFLAGS@
@@ -402,13 +407,14 @@ COMPILER_LD_FOR_TARGET=@COMPILER_LD_FOR_TARGET@
 COMPILER_NM_FOR_TARGET=@COMPILER_NM_FOR_TARGET@
 
 CFLAGS_FOR_TARGET = @CFLAGS_FOR_TARGET@
+CPPFLAGS_FOR_TARGET = @CPPFLAGS_FOR_TARGET@
 CXXFLAGS_FOR_TARGET = @CXXFLAGS_FOR_TARGET@
 SYSROOT_CFLAGS_FOR_TARGET = @SYSROOT_CFLAGS_FOR_TARGET@
 DEBUG_PREFIX_CFLAGS_FOR_TARGET = @DEBUG_PREFIX_CFLAGS_FOR_TARGET@
 
 LIBCFLAGS_FOR_TARGET = $(CFLAGS_FOR_TARGET)
 LIBCXXFLAGS_FOR_TARGET = $(CXXFLAGS_FOR_TARGET) -fno-implicit-templates
-LDFLAGS_FOR_TARGET = 
+LDFLAGS_FOR_TARGET = @LDFLAGS_FOR_TARGET@
 
 # ------------------------------------
 # Miscellaneous targets and flag lists
@@ -515,6 +521,7 @@ EXTRA_TARGET_FLAGS = \
 	'AS=$(COMPILER_AS_FOR_TARGET)' \
 	'CC=$$(CC_FOR_TARGET)' \
 	'CFLAGS=$$(CFLAGS_FOR_TARGET) $(SYSROOT_CFLAGS_FOR_TARGET) $(DEBUG_PREFIX_CFLAGS_FOR_TARGET)' \
+	'CPPFLAGS=$$(CPPFLAGS_FOR_TARGET)' \
 	'CXX=$$(CXX_FOR_TARGET)' \
 	'CXXFLAGS=$$(CXXFLAGS_FOR_TARGET) $(SYSROOT_CFLAGS_FOR_TARGET) $(DEBUG_PREFIX_CFLAGS_FOR_TARGET)' \
 	'DLLTOOL=$$(DLLTOOL_FOR_TARGET)' \
diff --git a/configure b/configure
index a8cf680742..dfeb45efc4 100755
--- a/configure
+++ b/configure
@@ -272,7 +272,7 @@ PACKAGE_STRING=
 PACKAGE_BUGREPORT=
 
 ac_unique_file="move-if-change"
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS TOPLEVEL_CONFIGURE_ARGUMENTS build build_cpu build_vendor build_os build_noncanonical host_noncanonical target_noncanonical host host_cpu host_vendor host_os target target_cpu target_vendor target_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LN LN_S build_libsubdir build_subdir host_subdir target_subdir CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CXX CXXFLAGS ac_ct_CXX GNATBIND ac_ct_GNATBIND GNATMAKE ac_ct_GNATMAKE do_compare gmplibs gmpinc stage1_languages SYSROOT_CFLAGS_FOR_TARGET DEBUG_PREFIX_CFLAGS_FOR_TARGET CFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET RPATH_ENVVAR GCC_SHLIB_SUBDIR tooldir build_tooldir CONFIGURE_GDB_TK GDB_TK INSTALL_GDB_TK build_configargs build_configdirs host_configargs configdirs target_configargs AR_FOR_BUILD AS_FOR_BUILD CC_FOR_BUILD CFLAGS_FOR_BUILD CXXFLAGS_FOR_BUILD CXX_FOR_BUILD DLLTOOL_FOR_BUILD GCJ_FOR_BUILD GFORTRAN_FOR_BUILD LDFLAGS_FOR_BUILD LD_FOR_BUILD NM_FOR_BUILD RANLIB_FOR_BUILD WINDMC_FOR_BUILD WINDRES_FOR_BUILD config_shell YACC BISON M4 LEX FLEX MAKEINFO EXPECT RUNTEST AR AS DLLTOOL LD LIPO NM RANLIB STRIP WINDRES WINDMC OBJCOPY OBJDUMP CC_FOR_TARGET CXX_FOR_TARGET GCC_FOR_TARGET GCJ_FOR_TARGET GFORTRAN_FOR_TARGET AR_FOR_TARGET AS_FOR_TARGET DLLTOOL_FOR_TARGET LD_FOR_TARGET LIPO_FOR_TARGET NM_FOR_TARGET OBJDUMP_FOR_TARGET RANLIB_FOR_TARGET STRIP_FOR_TARGET WINDRES_FOR_TARGET WINDMC_FOR_TARGET RAW_CXX_FOR_TARGET FLAGS_FOR_TARGET COMPILER_AS_FOR_TARGET COMPILER_LD_FOR_TARGET COMPILER_NM_FOR_TARGET MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT stage1_cflags stage1_checking stage2_werror_flag datarootdir docdir pdfdir htmldir LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS TOPLEVEL_CONFIGURE_ARGUMENTS build build_cpu build_vendor build_os build_noncanonical host_noncanonical target_noncanonical host host_cpu host_vendor host_os target target_cpu target_vendor target_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LN LN_S build_libsubdir build_subdir host_subdir target_subdir CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CXX CXXFLAGS ac_ct_CXX GNATBIND ac_ct_GNATBIND GNATMAKE ac_ct_GNATMAKE do_compare gmplibs gmpinc stage1_languages SYSROOT_CFLAGS_FOR_TARGET DEBUG_PREFIX_CFLAGS_FOR_TARGET CFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET CPPFLAGS_FOR_TARGET LDFLAGS_FOR_TARGET RPATH_ENVVAR GCC_SHLIB_SUBDIR tooldir build_tooldir CONFIGURE_GDB_TK GDB_TK INSTALL_GDB_TK build_configargs build_configdirs host_configargs configdirs target_configargs AR_FOR_BUILD AS_FOR_BUILD CC_FOR_BUILD CFLAGS_FOR_BUILD CPPFLAGS_FOR_BUILD CXXFLAGS_FOR_BUILD CXX_FOR_BUILD DLLTOOL_FOR_BUILD GCJ_FOR_BUILD GFORTRAN_FOR_BUILD LDFLAGS_FOR_BUILD LD_FOR_BUILD NM_FOR_BUILD RANLIB_FOR_BUILD WINDMC_FOR_BUILD WINDRES_FOR_BUILD config_shell YACC BISON M4 LEX FLEX MAKEINFO EXPECT RUNTEST AR AS DLLTOOL LD LIPO NM RANLIB STRIP WINDRES WINDMC OBJCOPY OBJDUMP CC_FOR_TARGET CXX_FOR_TARGET GCC_FOR_TARGET GCJ_FOR_TARGET GFORTRAN_FOR_TARGET AR_FOR_TARGET AS_FOR_TARGET DLLTOOL_FOR_TARGET LD_FOR_TARGET LIPO_FOR_TARGET NM_FOR_TARGET OBJDUMP_FOR_TARGET RANLIB_FOR_TARGET STRIP_FOR_TARGET WINDRES_FOR_TARGET WINDMC_FOR_TARGET RAW_CXX_FOR_TARGET FLAGS_FOR_TARGET COMPILER_AS_FOR_TARGET COMPILER_LD_FOR_TARGET COMPILER_NM_FOR_TARGET MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT stage1_cflags stage1_checking stage2_werror_flag datarootdir docdir pdfdir htmldir LIBOBJS LTLIBOBJS'
 ac_subst_files='serialization_dependencies host_makefile_frag target_makefile_frag alphaieee_frag ospace_frag'
 ac_pwd=`pwd`
 
@@ -5287,6 +5287,12 @@ if test "x$CXXFLAGS_FOR_TARGET" = x; then
 fi
 
 
+# Other target tools.
+CPPFLAGS_FOR_TARGET=${CPPFLAGS_FOR_TARGET-${CPPFLAGS}}
+
+LDFLAGS_FOR_TARGET=${LDFLAGS_FOR_TARGET-${LDFLAGS}}
+
+
 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
 # the named directory are copied to $(tooldir)/sys-include.
 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
@@ -6034,6 +6040,7 @@ esac
 # our build compiler if desired.
 if test x"${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
@@ -6112,6 +6119,7 @@ done
 
 
 
+
 # Generate default definitions for YACC, M4, LEX and other programs that run
 # on the build machine.  These are used if the Makefile can't locate these
 # programs in objdir.
@@ -12980,6 +12988,8 @@ s,@SYSROOT_CFLAGS_FOR_TARGET@,$SYSROOT_CFLAGS_FOR_TARGET,;t t
 s,@DEBUG_PREFIX_CFLAGS_FOR_TARGET@,$DEBUG_PREFIX_CFLAGS_FOR_TARGET,;t t
 s,@CFLAGS_FOR_TARGET@,$CFLAGS_FOR_TARGET,;t t
 s,@CXXFLAGS_FOR_TARGET@,$CXXFLAGS_FOR_TARGET,;t t
+s,@CPPFLAGS_FOR_TARGET@,$CPPFLAGS_FOR_TARGET,;t t
+s,@LDFLAGS_FOR_TARGET@,$LDFLAGS_FOR_TARGET,;t t
 s,@RPATH_ENVVAR@,$RPATH_ENVVAR,;t t
 s,@GCC_SHLIB_SUBDIR@,$GCC_SHLIB_SUBDIR,;t t
 s,@tooldir@,$tooldir,;t t
@@ -12996,6 +13006,7 @@ s,@AR_FOR_BUILD@,$AR_FOR_BUILD,;t t
 s,@AS_FOR_BUILD@,$AS_FOR_BUILD,;t t
 s,@CC_FOR_BUILD@,$CC_FOR_BUILD,;t t
 s,@CFLAGS_FOR_BUILD@,$CFLAGS_FOR_BUILD,;t t
+s,@CPPFLAGS_FOR_BUILD@,$CPPFLAGS_FOR_BUILD,;t t
 s,@CXXFLAGS_FOR_BUILD@,$CXXFLAGS_FOR_BUILD,;t t
 s,@CXX_FOR_BUILD@,$CXX_FOR_BUILD,;t t
 s,@DLLTOOL_FOR_BUILD@,$DLLTOOL_FOR_BUILD,;t t
diff --git a/configure.ac b/configure.ac
index fb859c110a..1915877aa7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1743,6 +1743,12 @@ if test "x$CXXFLAGS_FOR_TARGET" = x; then
 fi
 AC_SUBST(CXXFLAGS_FOR_TARGET)
 
+# Other target tools.
+CPPFLAGS_FOR_TARGET=${CPPFLAGS_FOR_TARGET-${CPPFLAGS}}
+AC_SUBST(CPPFLAGS_FOR_TARGET)
+LDFLAGS_FOR_TARGET=${LDFLAGS_FOR_TARGET-${LDFLAGS}}
+AC_SUBST(LDFLAGS_FOR_TARGET)
+
 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
 # the named directory are copied to $(tooldir)/sys-include.
 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then
@@ -2481,6 +2487,7 @@ esac
 # our build compiler if desired.
 if test x"${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
@@ -2546,6 +2553,7 @@ 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)
diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index e1a744c036..fd9d300021 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,3 +1,8 @@
+2008-10-22  Daniel Jacobowitz  <dan@codesourcery.com>
+
+	* Makefile.in (CPPFLAGS): Define.
+	(FLAGS_TO_PASS, COMPILE.c): Add CPPFLAGS.
+
 2008-10-15  Paolo Bonzini  <bonzini@gnu.org>
 
 	PR bootstrap/37137
diff --git a/libiberty/Makefile.in b/libiberty/Makefile.in
index aa8626d5c0..41a71f5ea3 100644
--- a/libiberty/Makefile.in
+++ b/libiberty/Makefile.in
@@ -55,6 +55,7 @@ AR_FLAGS = rc
 
 CC = @CC@
 CFLAGS = @CFLAGS@
+CPPFLAGS = @CPPFLAGS@
 RANLIB = @RANLIB@
 MAKEINFO = @MAKEINFO@
 PERL = @PERL@
@@ -78,6 +79,7 @@ FLAGS_TO_PASS = \
 	"AR_FLAGS=$(AR_FLAGS)" \
 	"CC=$(CC)" \
 	"CFLAGS=$(CFLAGS)" \
+	"CPPFLAGS=$(CPPFLAGS)" \
 	"DESTDIR=$(DESTDIR)" \
 	"EXTRA_OFILES=$(EXTRA_OFILES)" \
 	"HDEFINES=$(HDEFINES)" \
@@ -109,7 +111,7 @@ installcheck: installcheck-subdir
 
 INCDIR=$(srcdir)/$(MULTISRCTOP)../include
 
-COMPILE.c = $(CC) -c @DEFS@ $(CFLAGS) -I. -I$(INCDIR) $(HDEFINES) @ac_libiberty_warn_cflags@
+COMPILE.c = $(CC) -c @DEFS@ $(CFLAGS) $(CPPFLAGS) -I. -I$(INCDIR) $(HDEFINES) @ac_libiberty_warn_cflags@
 
 # Just to make sure we don't use a built-in rule with VPATH
 .c.o: