* config/mh-ppc-aix (BOOT_ADAFLAGS): Remove -mminimal-toc.

From-SVN: r148942

2009-06-25  Martin Jambor  <mjambor@suse.cz>

	PR tree-optimization/40493
	* tree-sra.c (sra_modify_expr): Correct BIT_FIELD_REF argument numbers.
	(enum unscalarized_data_handling): New type.
	(handle_unscalarized_data_in_subtree): Return what has been done.
	(load_assign_lhs_subreplacements): Handle left flushes differently.
	(sra_modify_assign): Use unscalarized_data_handling, simplified
	condition determining whether to remove the statement.

	* testsuite/gcc.c-torture/execute/pr40493.c: New test.

From-SVN: r148941

2009-06-25  Vincent Celier  <celier@adacore.com>

	* vms_data.ads: Minor comment change

2009-06-25  Gary Dismukes  <dismukes@adacore.com>

	* exp_ch5.adb (Expand_N_Extended_Return_Statement): Don't build an
	assignment statement to targeting a caller-provided object when the
	result type is an interface type.

	* exp_ch6.adb (Expand_Call): Remove redundant test of
	Is_Limited_Interface (Is_Inherently_Limited is sufficient).
	(Is_Build_In_Place_Function): Remove test for Is_Limited_Interface.

	* sem_aggr.adb (Check_Expr_OK_In_Limited_Aggregate): Add type in call
	to OK_For_Limited_Init.

	* sem_aux.adb (Is_Inherently_Limited_Type): Revise limited type
	condition so that True is returned for all limited interfaces, not
	just synchronized ones. Ignore components of an interface type when
	checking for limited components (such a component can be a parent
	component).

	* sem_ch3.ads (OK_For_Limited_Init_In_05): Add type parameter.
	(OK_For_Limited_Init): Add type parameter.

	* sem_ch3.adb (Check_Initialization): Add type in call to
	OK_For_Limited_Init.
	(OK_For_Limited_Init): Add new type param in call to
	OK_For_Limited_Init_In_05.
	(OK_For_Limited_Init_In_05): Permit arbitrary expressions of a
	nonlimited type when the context type is a limited interface. Add type
	on recursive calls.

	* sem_ch4.adb (Analyze_Allocator): Add type in call to
	OK_For_Limited_Init.

	* sem_ch6.adb (Check_Limited_Return): Add type in call to
	OK_For_Limited_Init.

	* sem_ch12.adb (Analyze_Formal_Object_Declaration): Add type in call to
	OK_For_Limited_Init.
	(Instantiate_Object): Add type in call to OK_For_Limited_Init.

	* sem_type.adb (Interface_Present_In_Ancestor): In the case of a
	class-wide interface, get the base type before applying Etype, in order
	to account for class-wide subtypes.

From-SVN: r148938

2009-06-25  Emmanuel Briot  <briot@adacore.com>

	* gnatcmd.adb, prj-proc.adb, make.adb, prj.adb, prj.ads, prj-nmsc.adb,
	prj-util.adb, prj-env.adb, prj-env.ads: Merge handling of naming_data
	between gnatmake and gprbuild.
	(Naming_Data): Removed, no longer used
	(Naming_Table, Project_Tree_Ref.Namings): Removed, since this is only
	needed locally in one subprogram, no need to store forever in the
	structure.
	(Check_Naming_Scheme, Check_Package_Naming): Merged, since they play
	a similar role.
	(Body_Suffix_Of, Body_Suffix_Id_Of, Register_Default_Naming_Scheme,
	Same_Naming_Scheme, Set_Body_Suffix, Set_Spec_Suffix, Spec_Suffix_Of,
	Spec_Suffix_Id_Of): removed, no longer used.

2009-06-25  Javier Miranda  <miranda@adacore.com>

	* sem_res.adb (Resolve_Allocator): Skip test requiring exact match of
	types on qualified expression in calls to imported C++ constructors.

	* exp_ch4.adb (Expand_Allocator_Expression): Add missing support for
	imported C++ constructors.

2009-06-25  Sergey Rybin  <rybin@adacore.com>

	* vms_data.ads: Add qualifier for new gnatcheck '-t' option.

From-SVN: r148937

2009-06-25  Vincent Celier  <celier@adacore.com>

	* s-os_lib.adb (Normalize_Pathname.Get_Directory): If directory
	provided, on Windows change all '/' to '\'.

	* fmap.ads, fmap.adb (Remove_Forbidden_File_Name): Remove, no longer
	used. Minor comment changes

	* prj-nmsc.adb: Do not call Fmap.Add_Forbidden_File_Name or
	Remove_Forbidden_File_Name.

2009-06-25  Quentin Ochem  <ochem@adacore.com>

	* prj.ads (Unit_Index): Now general access type.

From-SVN: r148936

2009-06-25  Pascal Obry  <obry@adacore.com>

	* a-stwise.adb, a-stzsea.adb: Fix confusion between 'Length and 'Last.

From-SVN: r148935

fmap.ads, [...] (Source_Data.Get_Object): Field removed, since it can be computed efficiently from the other fields.

2009-06-25  Emmanuel Briot  <briot@adacore.com>

	* fmap.ads, make.adb, prj.adb, prj.ads, prj-nmsc.adb, prj-env.adb,
	prj-env.ads (Source_Data.Get_Object): Field removed, since it can be
	computed efficiently from the other fields.
	(Object_To_Global_Archive): New subprogram
	(Create_Mapping): Remove unneeded call to Remove_Forbidden_File_Name.
	(Override_Kind): Fix handling of separates in Ada.
	(Create_Mapping_File): Remove duplicate code
	(Naming_Data.Implementation_Exception, Specification_Exception):
	field removed, since never used.
	(Naming_Data.Specs, .Bodies): field removed, since this is only
	used while processing the project and is not needed once the tree
	is in memory. This brings Naming_Data and Lang_Naming_Data
	closer (same content now, but different use still).

From-SVN: r148934

2009-06-25  Pascal Obry  <obry@adacore.com>

	* sem_ch4.adb: Minor reformatting.

	* a-strsea.adb: Fix confusion between 'Length and 'Last.

From-SVN: r148933

2009-06-25  Ed Schonberg  <schonberg@adacore.com>

	* exp_attr.adb (Expand_N_Attribute_Reference, case 'Access and
	Unchecked_Access): If the context is an interface type, and the prefix
	is of the corresponding class-wide type, do not insert a conversion
	because the pointer displacement has already taken place, and we must
	retain the class-wide type in a dispatching context.

2009-06-25  Emmanuel Briot  <briot@adacore.com>

	* prj-nmsc.adb, prj-env.adb (Override_Kind): Unset the unit field of
	the previous source file.
	(Create_Mapping): Iterate on sources rather than on units.

From-SVN: r148932

2009-06-25  Emmanuel Briot  <briot@adacore.com>

	* gnatcmd.adb, make.adb, mlib-prj.adb, prj.adb, prj.ads, prj-nmsc.adb,
	prj-env.adb, prj-env.ads (Slash): removed, no longer used
	(Source_Data): no longer use Path.Name to point to a locally removed
	file. Instead we use the field Locally_Removed which is clearer

2009-06-25  Arnaud Charlet  <charlet@adacore.com>

	* gcc-interface/Make-lang.in: Remove references to sem_maps.o

	* sem_maps.adb, sem_maps.ads: Removed, not used.

From-SVN: r148931

2009-06-25  Ed Falis  <falis@adacore.com>

	* s-vxwext-rtp.ads: Add missing declaration

2009-06-25  Matthew Gingell  <gingell@adacore.com>

	* a-stwise.adb, a-stzsea.adb (Count, Index): Avoid local copy on stack,
	speed up unmapped case.

2009-06-25  Vincent Celier  <celier@adacore.com>

	* prj-nmsc.adb (Check): Change error message for illegal abstract
	projects.

2009-06-25  Robert Dewar  <dewar@adacore.com>

	* gnat_ugn.texi: Add note on use of -gnatct for ASIS

2009-06-25  Emmanuel Briot  <briot@adacore.com>

	* fmap.ads: Add documentation on mapping files

From-SVN: r148930

plugins.texi (Building GCC plugins): Corrected typo in Makefile excerpt - @ should be doubled for texinfo.

2009-06-25  Basile Starynkevitch  <basile@starynkevitch.net>
	* doc/plugins.texi (Building GCC plugins): Corrected typo in
	Makefile excerpt - @ should be doubled for texinfo.

From-SVN: r148929

2009-06-25  Robert Dewar  <dewar@adacore.com>

	* exp_ch6.adb, g-socket.ads, g-socket.adb, sem_ch3.adb: Minor
	reformatting

From-SVN: r148928

	* config/arc/arc.c: Include "df.h".
	(arc_attribute_table): Make static.  Move higher in file.
	(arc_address_cost): Call SMALL_INT on INTVAL, not rtx.
	(output_shift): Initialize n later to avoid warning.
	* config/arm/arm.c (arm_attribute_table): Make static.  Move
	higher in file.
	* config/avr/avr.c (avr_attribute_table): Make static.  Move
	higher in file.
	(reg_class_tab): Change array type from int to enum reg_class.
	(avr_jump_mode): Change GET_MODE to GET_CODE when checking for
	LABEL_REF.
	(out_tsthi, ashlhi3_out): Don't use AS2 with "or" or "and".
	(lshrhi3_out): Likewise.
	(class_likely_spilled_p): Change return type to bool.
	(avr_rtx_costs): Use local code variable with enum type.
	* config/avr/avr.md (movmemhi): Use add_reg_note.
	(andhi3, andsi3): Don't use AS2 with "and".
	(iorhi3, iorsi3): Don't use AS2 with "or".
	* config/avr/avr-protos.h (class_likely_spilled_p): Update
	declaration.
	* config/crx/crx.c: Include "df.h".
	(crx_attribute_table): Make static.
	* config/m32r/m32r.c: Include "df.h".
	(m32r_attribute_table): Make static.  Move higher in file.
	(pop): Use add_reg_note.
	(block_move_call): Change 0 to LCT_NORMAL in function call.
	* config/m32r/m32r.md (movsi_insn): Remove unused local value.
	* config/m32r/m32r.h (INITIALIZE_TRAMPOLINE): Likewise.
	* config/m32r/m32r-protos.h (m32r_compute_function_type): Always
	declare, not just when TREE_CODE is defined.
	* config/m68hc11/m68hc11.c: Include "expr.h".
	(m68hc11_attribute_table): Make static.  Move higher in file.
	(m68hc11_small_indexed_indirect_p): Change 0 to VOIDmode in
	function call.
	(m68hc11_register_indirect_p): Likewise.
	(m68hc11_function_arg_padding): Change return type to enum
	direction.
	(emit_move_after_reload): Use add_reg_note.
	(m68hc11_emit_logical): Change code parameter to enum rtx_code.
	(m68hc11_split_logical): Likewise.
	(m68hc11_rtx_costs): Add local code_and outer_code variables with
	enum type.
	* config/m68hc11/predicates.md (reg_or_some_mem_operand): Change 0
	to VOIDmode in function call.
	* config/m68hc11/m68hc11-protos.h: Don't check TREE_CODE to see if
	tree is defined.
	(m68hc11_split_logical): Update declaration.
	(m68hc11_function_arg_padding): Update declaration.
	* config/mcore/mcore.c (regno_reg_class): Change form array of int
	to array of enum reg_class.
	(mcore_attribute_table): Make static.  Move higher in file.
	(mcore_rtx_costs): Add cast to enum type.
	* config/mcore/mcore.h (regno_reg_class): Update declaration.
	(GO_IF_LEGITIMATE_INDEX): Add cast to avoid warning.
	* config/sh/sh.c (sh_attribute_table): Make static.  Move higher
	in file.
	* config/sh/predicates.md (trapping_target_operand): Rename and to
	and_expr.
	* config/sparc/sparc.c (sparc_attribute_table): Make static.  Move
	higher in file.
	* config/spu/spu.c (spu_attribute_table): Make static.  Move
	higher in file.
	* config/v850/v850.c (v850_attribute_table): Make static.  Move
	higher in file.
	(v850_rtx_costs): Use local code with enum type.
	(expand_epilogue): Add cast.
	* config/v850/v850-c.c (ghs_pragma_section): Initialize repeat.

From-SVN: r148927

	* doc/invoke.texi (SH Options): Document -m2a, -m2a-single,
	-m2a-single-only and -m2a-nofpu.
	* config/sh/sh.opt: Document m2a generates FPU code.

From-SVN: r148926

From-SVN: r148925

	* defaults.h (CAN_ELIMINATE): Provide default.
	* doc/tm.texi (CAN_ELIMINATE): Revise documentation.
	* config/alpha/alpha.h (CAN_ELIMINATE): Delete.
	* config/m32c/m32c.h (CAN_ELIMINATE): Delete.
	* config/spu/spu.h (CAN_ELIMINATE): Delete.
	* config/xtensa/xtensa.h (CAN_ELIMINATE): Delete.
	* config/moxie/moxie.h (CAN_ELIMINATE): Delete.
	* config/cris/cris.h (CAN_ELIMINATE): Delete.
	* config/mn10300/mn10300.h (CAN_ELIMINATE): Delete.
	* config/pa/pa64-linux.h (CAN_ELIMINATE): Delete.
	* config/mmix/mmix.h (CAN_ELIMINATE): Delete.

From-SVN: r148919

From-SVN: r148917

From-SVN: r148916

	* pt.c (lookup_template_class): Use currently_open_class,
	compare template args later.

From-SVN: r148915

From-SVN: r148914

* mep-ext-cop.cpu: Fix copyright notice.
* mep-default: Fix copyright notice.
* mep-core: Fix copyright notice.
* mep: Fix copyright notice.
* mep-ivc2: Fix copyright notice.
* mep-c5: Fix copyright notice.

From-SVN: r148913

	PR c++/40342
	* decl.c (decls_match): Check DECL_TI_TEMPLATE too.
	* class.c (resolve_address_of_overloaded_function): Fix typo.

From-SVN: r148910

	* doc/contrib.texi (Contributors):

From-SVN: r148909

2009-06-24  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/40427
	* gfortran.h (gfc_component): New member 'formal_ns'.
	(gfc_copy_formal_args_ppc,void gfc_ppc_use): New.
	* interface.c (gfc_ppc_use): New function, analogous to
	gfc_procedure_use, but for procedure pointer components.
	* module.c (MOD_VERSION): Bump module version.
	(mio_component): Treat formal arguments.
	(mio_formal_arglist): Changed argument from gfc_symbol to
	gfc_formal_arglist.
	(mio_symbol): Changed argument of mio_formal_arglist.
	* resolve.c (resolve_ppc_call,resolve_expr_ppc): Call gfc_ppc_use,
	to check actual arguments and treat formal args correctly.
	(resolve_fl_derived): Copy formal args of procedure pointer components
	from their interface.
	* symbol.c (gfc_copy_formal_args_ppc): New function, analogous to
	gfc_copy_formal_args, but for procedure pointer components.


2009-06-24  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/40427
	* gfortran.dg/proc_ptr_comp_11.f90: New.

From-SVN: r148906

2009-06-24  Robert Dewar  <dewar@adacore.com>

	* prj-nmsc.adb, prj-nmsc.ads, prj-proc.adb, prj.adb: Minor reformatting

	* a-strsea.adb (Count): Avoid local copy on stack, speed up unmapped
	case.
	(Index): Ditto.

2009-06-24  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch4.adb (Analyze_One_Call): Check that at least one actual is
	present when checking whether a call may be interpreted as an indexing
	of the result of a call.

	* exp_ch9.adb (Expand_N_Subprogram_Declaration): Place the generated
	body for a null procedure on the freeze actions for the procedure, so
	that it will be analyzed at the proper place without premature freezing
	of actuals.

	* sem_ch3.adb (Check_Completion): Code cleanup. 
	Do not diagnose a null procedure without a body, if previous errors
	have disabled expansion.

2009-06-24  Doug Rupp  <rupp@adacore.com>

	* init.c [VMS] Resignal C$_SIGKILL

2009-06-24  Ed Falis  <falis@adacore.com>

	* s-vxwext.adb, s-vxwext-kernel.adb: Add s-vxwext body for VxWorks 5
	Define ERROR in body for VxWorks 6 kernel

2009-06-24  Pascal Obry  <obry@adacore.com>

	* g-socket.adb, g-socket.ads: Fix possible unexpected constraint error
	in [Send/Receive]_Socket.

From-SVN: r148905

2009-06-24  Emmanuel Briot  <briot@adacore.com>

	* prj-proc.adb, prj-proc.ads, prj.ads, prj-nmsc.adb, prj-nmsc.ads,
	prj-conf.adb, prj-conf.ads (Allow_Duplicate_Basenames): New parameter
	to several subprograms.
	(Source_Data.Other_Part): Removed, since can be computed from the
	language.
	(Other_Part): New subprogram.

From-SVN: r148904

gnat_ugn.texi, [...] (Suffix_Matches): A suffix can also match the full base name of the file when...

2009-06-24  Emmanuel Briot  <briot@adacore.com>

	* gnat_ugn.texi, prj-nmsc.adb (Suffix_Matches): A suffix can also match
	the full base name of the file when the suffix doesn't start with a '.'.

From-SVN: r148903

2009-06-24  Vincent Celier  <celier@adacore.com>

	* prj-nmsc.adb (Check): A project declared abstract is legal if no
	attribute Source_Dirs, Source_Files, Source_List_File or Languages is
	declared.

2009-06-24  Robert Dewar  <dewar@adacore.com>

	* clean.adb, gnatcmd.adb, make.adb, mlib-prj.adb,
	prj-env.adb: Minor reformatting

2009-06-24  Ed Falis  <falis@adacore.com>

	* s-taprop-vxworks.adb, s-osinte-vxworks.ads, s-vxwext.ads,
	s-vxwext-kernel.adb, s-vxwext-kernel.ads, s-vxwext-rtp.adb,
	s-tasinf-vxworks.ads, gcc-interface/Makefile.in: Add processor affinity
	support for VxWorks SMP.

	* gcc-interface/Make-lang.in: Update dependencies

From-SVN: r148902

2009-06-24  Emmanuel Briot  <briot@adacore.com>

	* gnatcmd.adb, make.adb, mlib-prj.adb, prj.adb, prj.ads, clean.adb,
	prj-nmsc.adb, prj-env.adb, prj-proc.adb (Units_Table): Removed, since
	no longer useful.
	(Source_Data.Lang_Kind): Removed, since it duplicates information
	already available through Language.Config.
	(Source_Data.Compile): Removed, since information is already available
	through the language.
	(Is_Compilable): New subprogram.
	(Source_Data.Dependency): Removed, since already available through
	the language.
	(Source_Data.Object_Exist, Object_Linked): Removed since available
	through the language already.
	(Unit_Data.File_Names): Is now also set in multi_language mode, to
	bring the two modes closer in the resulting data structures.
	(Source_Data.Unit): Now a direct pointer to the unit data, rather than
	just the name that would point into a hash table.
	(Get_Language_From_Name): New subprogram.

From-SVN: r148901

2009-06-24  Javier Miranda  <miranda@adacore.com>

	* exp_ch4.adb (Expand_N_Type_Conversion): Handle entities that are
	visible through limited-with context clauses. In addition, avoid an
	extra tag check that is not required when the class-wide
	designated types of the operand and target types are
	the same entity.
	(Tagged_Membership): Handle entities from the limited view.

2009-06-24  Emmanuel Briot  <briot@adacore.com>

	* gnatcmd.adb, make.adb, mlib-prj.adb, prj.ads, clean.adb,
	prj-nmsc.adb, prj-env.adb (File_Name_Data): removed
	(Spec_Or_Body): now a subtype of Source_Kind, to avoid using two
	different vocabularies for similar concepts (Impl/Body_Part and
	Spec/Specification).
	(Unit_Data): now points directly to a Source_Id, rather than duplicating
	some of the information in File_Name_Data. This also saves a bit of
	memory. However, since we are now using a pointer we need to test
	for null explicitly in several places of the code

From-SVN: r148900

2009-06-24  Javier Miranda  <miranda@adacore.com>

	* exp_ch4.adb (Expand_N_Type_Conversion): return immediately
	from processing the type conversion when the node is
	replaced by an N_Raise_Program_Error node.

2009-06-24  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_ch6.adb (Designates_From_With_Type): New routine.
	(Process_Formals): Since anonymous access types are no longer flagged
	as from with types, traverse the designated type to determine whether
	it is coming from a limited view.

	* sem_res.adb: Remove with and use clauses for Sem_Ch10.
	(Full_Designated_Type): Use Available_View to extract the non-limited /
	full view of a type.

From-SVN: r148899

2009-06-24  Robert Dewar  <dewar@adacore.com>

	* exp_ch6.adb: Minor reformatting

	* layout.adb: Minor reformatting

	* make.adb: Minor reformatting

2009-06-24  Thomas Quinot  <quinot@adacore.com>

	* sem_ch10.adb: Minor code reorganization.

From-SVN: r148898

2009-06-24  Eric Botcazou  <ebotcazou@adacore.com>

	* ttypes.ads: Minor editing.
	
2009-06-24  Robert Dewar  <dewar@adacore.com>

	* exp_ch6.adb (Expand_Actuals): Use Is_Volatile, not Treat_As_Volatile
	in deciding to do call-by-copy code.

2009-06-24  Vincent Celier  <celier@adacore.com>

	* make.adb (Gnatmake): To decide if an executable should be rebuilt,
	check if an externally built library file is more current than the
	executable.

From-SVN: r148897

From-SVN: r148896

2009-06-24  Jonathan Wakely  <jwakely.gcc@gmail.com>

	* include/std/future (shared_future): Adjust doxygen comment.

From-SVN: r148895

2009-06-24  Jonathan Wakely  <jwakely.gcc@gmail.com>

	PR libstdc++/40297
	* include/bits/atomic_0.h: Reverse debug assertions.
	* include/bits/atomic_2.h: Likewise.

From-SVN: r148893

2009-06-24  Andreas Krebbel  <krebbel1@de.ibm.com>
	
	PR middle-end/40501
	* tree-ssa-math-opts.c (execute_optimize_bswap): Convert the bswap
	src and dst operands if necessary.

2009-06-24  Andreas Krebbel  <krebbel1@de.ibm.com>

	* gcc.dg/pr40501.c: New testcase.

From-SVN: r148892

[toplevel]

	* MAINTAINERS: Add myself as mep maintainer.

[gcc]

	Add MeP port.
	* config.gcc: Add mep support.
	* recog.c: Resurrect validate_replace_rtx_subexp().
	* recog.h: Likewise.
	* config/mep/: Add new port:
	* config/mep/constraints.md: New file.
	* config/mep/default.h: New file.
	* config/mep/intrinsics.h: New file.
	* config/mep/intrinsics.md: New file.
	* config/mep/ivc2-template.h: New file.
	* config/mep/mep-c5.cpu: New file.
	* config/mep/mep-core.cpu: New file.
	* config/mep/mep-default.cpu: New file.
	* config/mep/mep-ext-cop.cpu: New file.
	* config/mep/mep-intrin.h: New file.
	* config/mep/mep-ivc2.cpu: New file.
	* config/mep/mep-lib1.asm: New file.
	* config/mep/mep-lib2.c: New file.
	* config/mep/mep-pragma.c: New file.
	* config/mep/mep-protos.h: New file.
	* config/mep/mep-tramp.c: New file.
	* config/mep/mep.c: New file.
	* config/mep/mep.cpu: New file.
	* config/mep/mep.h: New file.
	* config/mep/mep.md: New file.
	* config/mep/mep.opt: New file.
	* config/mep/predicates.md: New file.
	* config/mep/t-mep: New file.

[gcc/testsuite]

	Add MeP port.
	* lib/target-supports.exp: Add mep support (no profiling).

[libgcc]

	Add MeP port.
	* config.host: Add mep support.

[libstdc++-v3]

	Add MeP port.
	* configure.host: Add mep support.

From-SVN: r148890

./:	* configure.ac: Add --enable-build-with-cxx.  When set, add c++ to
	boot_languages.  Only bootstrap target libraries listed in
	target_libs for some boot language.  Add --with-stage1-ldflags,
	--with-stage1-libs, --with-boot-ldflags, --with-boot-libs.  Remove
	with_host_libstdcxx from ppllibs.  Only add -fkeep-inline-functions
	if not building with C++.
	* Makefile.def: For target_module libstdc++-v3, set bootstrap=true.
	* Makefile.tpl (STAGE1_LDFLAGS, STAGE1_LIBS): New variables.
	(POSTSTAGE1_LDFLAGS, POSTSTAGE1_LIBS): New variables.
	(HOST_EXPORTS): Add STAGE1_LDFLAGS to LDFLAGS.  Export HOST_LIBS.
	(POSTSTAGE1_HOST_EXPORTS): Set CXX and CXX_FOR_BUILD.  Add
	POSTSTAGE1_LDFLAGS to LDFLAGS.  Export HOST_LIBS.
	(POSTSTAGE1_FLAGS_TO_PASS): Likewise.
	* configure, Makefile.in: Rebuild.
gcc/:
	* configure.ac: Invoke AC_PROG_CXX.  Separate C specific warnings
	from loose_warn into c_loose_warn and from strict_warn into
	c_strict_warn.  Set and substitute warn_cxxflags.  Check for
	--enable-build-with-cxx.  Set and substitute
	ENABLE_BUILD_WITH_CXX.  Set and substitute HOST_LIBS.
	* Makefile.in (CXXFLAGS): New variable.
	(C_LOOSE_WARN, C_STRICT_WARN): New variables.
	(GCC_WARN_CFLAGS): Add $(C_LOOSE_WARN).  Add $(C_STRICT_WARN) if
	the default is the same as $(STRICT_WARN).
	(GCC_WARN_CXXFLAGS, WARN_CXXFLAGS): New variables.
	(CXX): New variable.
	(COMPILER): New value if ENABLE_BUILD_WITH_CXX.
	(COMPILER_FLAGS, LINKER, LINKER_FLAGS): Likewise.
	(ALL_COMPILERFLAGS, ALL_LINKERFLAGS): Likewise.
	(HOST_LIBS): New variable.
	(GCC_CFLAGS): Add $(C_LOOSE_WARN).
	(ALL_CXXFLAGS): New variable.
	(LIBS, BACKENDLIBS): Add $(HOST_LIBS).
	* doc/install.texi (Configuration): Document
	--enable-build-with-cxx, --with-stage1-ldflags,
	--with-stage1-libs, --with-boot-ldflags, --with-boot-libs.
	* configure: Rebuild.

From-SVN: r148889