PATCH: 3.3: sco5 update

["Kean Johnston" <jkj at sco dot com>]

Below is the changelog, and attached is the patch.
gcc/config/i386/t-sco5gas should be removed
gcc/fixinc/tests/base/string.h: New file.
gcc/fixinc/tests/base/sys/regset.h: New file.

2003-04-13  Kean Johnston  <jkj at sco dot com>

	* gcc/config.gcc: make SCO use dbxelf.h and elfos.h; only use
one
	target fragment now: t-sco5; dont compile crti.o.
	* gcc/config/i386/sco5.h: major overhaul to remove all COFF
remnants
	and to use elfos.h for most definitions.
	(BSS_SECTION_ASM_OP): set correct segment attributes.
	(PREFERED_DEBUGGING_TYPE): set to DWARF-2.
	(DWARF2_UNWIND_INFO): Always set to 1.
	(MD_STARTFILE_PREFIX): Make /usr/gnu/lib the default.
	(MD_STARTFILE_PREFIX_1): Define.
	(MD_EXEC_PREFIX): Adjust to /usr/gnu/bin if using GAS.
	(DEFAULT_LINKER): Define if not specified to configure.
	(CTORS_SECTION_ASM_OP): Remove COFF crud.
	(DTORS_SECTION_ASM_OP): Remove COFF crud.
	(WINT_TYPE): Define.
	(SDB_DEBUGGING_INFO): Remove.
	(EXTRA_SECTIONS): Likewise.
	(EXTRA_SECTION_FUNCTIONS): Likewise.
	(CTOR_LIST_BEGIN): Likewise.
	(CTOR_LIST_END): Likewise.
	(INIT_SECTION_FUNCTION): Likewise.
	(FINI_SECTION_FUNCTION): Likewise.
	(SUBTARGET_FRAME_POINTER_REQUIRED): Likewise.
	(LOCAL_LABEL_PREFIX): Likewise.
	(NON_SAVING_SETJMP): Likewise.
	(RETURN_POPS_ARGS): Likewise.
	(ASM_OUTPUT_SKIP): Likewise.
	(TARGET_ASM_NAMED_SECTION): Likewise.
	(ASM_OUTPUT_INTERNAL_LABEL): Likewise.
	(ASM_OUTPUT_EXTERNAL_LIBCALL): Likewise.
	(ASM_OUTPUT_IDENT): Likewise.
	(ASM_OUTPUT_CASE_LABEL): Likewise.
	(ASM_OUTPUT_ASCII): Likewise.
	(ASM_OUTPUT_LIMITED_STRING): Likewise.
	(ASM_OUTPUT_ALIGNED_LOCAL): Likewise.
	(ASM_OUTPUT_ALIGNED_COMMON): Likewise.
	(ASM_GENERATE_INTERNAL_LABEL): Likewise.
	(ASM_FINISH_DECLARE_OBJECT): Likewise.
	(ASM_DECLARE_OBJECT_NAME): Likewise.
	(ASM_DECLARE_FUNCTION_SIZE): Likewise.
	(ASM_DECLARE_FUNCTION_NAME): Likewise.
	(ASM_DECLARE_RESULT): Likewise.
	(ASM_WEAKEN_LABEL): Likewise.
	(SUPPORTS_WEAK): Likewise.
	(APPLY_RESULT_SIZE): Likewise.
	(LPREFIX): Likewise.
	(ALIGN_ASM_OP): Likewise.
	(ASCII_DATA_ASM_OP): Likewise.
	(IDENT_ASM_OP): Likewise.
	(ASM_SHORT): Likewise.
	(ASM_LONG): Likewise.
	(TYPE_ASM_OP): Likewise.
	(SIZE_ASM_OP): Likewise.
	(STRING_ASM_OP): Likewise.
	(SKIP_ASM_OP): Likewise.
	(EH_FRAME_SECTION_ASM_OP): Likewise.
	(READONLY_DATA_SECTION_ASM_OP): Likewise.
	(INIT_SECTION_ASM_OP): Likewise.
	(FINI_SECTION_ASM_OP): Likewise.
	(TEXT_SECTION_ASM_OP): Likewise.
	(DATA_SECTION_ASM_OP): Likewise.
	(TYPE_OPERANT_FORMAT): Likewise.
	(ASM_SPEC): Remove COFF code.
	(STARTFILE_SPEC): Likewise. Always use crti.o; add -p and -pp
support;
	cause -pg to emit an error; use pcrt1elf.o with -pp; use
crtbeginS.o
	and crtendS.o for shared libraries.
	(ENDFILE_SPEC): Likewise.
	(TARGET_OS_CPP_BUILTINS): Add _SCO_DS_LL.
	(CPP_SPEC): Remove COFF crud; always look in /usr/gnu/include
first.
	(LINK_SPEC): Remove COFF crud; use -E for environment switch not
-R;
	add -z alt_resolve to support weak symbols the way GCC wants
them.
	(LIB_SPEC): Use the profiler libraries in -p or -pp mode.
	(LIBGCC_SPEC): Dont use -lgcc in -G mode.
	(ASM_PREFERED_EH_DATA_FORMAT): Remove.
	* gcc/config/i386/t-sco5 (TARGET_LIBGCC2_CFLAGS): Remove.
	(CRTSTUFF_T_CFLAGS_S): Define.
	(MULTILIB_OPTIONS): Likewise.
	(MULTILIB_DIRNAMES): Likewise.
	(MULTILIB_EXCEPTIONS): Likewise.
	(MULTILIB_MATCHES): Likewise.
	(MULTILIB_EXTRA_OPTS): Likewise.
	(LIBGCC): Likewise.
	(INSTALL_LIBGCC): Likewise.
	(crti.o): Remove.
	* gcc/config/i386/t-sco5gas: Remove.
	* gcc/doc/install.texi: Updated for new OpenServer instructions.
	* gcc/fixinc/check.tpl: Allow user to over-ride diff program.
	* gcc/fixinc/inclhack.def: Removed extraneous #ifndef SVR5.
	(sco_math): Added test for SCO math header files.
	(sco_regset): Added check for conflicts with ieeefp.h.
	(svr4_disable_opt): Removed extraneous #ifdef SVR4.
	* gcc/fixinc/tests/base/math.h: Added sco_math tests.
	* gcc/fixinc/tests/base/string.h: New file.
	* gcc/fixinc/tests/base/sys/regset.h: New file.
	* gcc/testsuite/gc.dg/nest.c: Add valid failure case for -pg.

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