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Annotation of gcc/config/linux.h, revision 1.1

1.1     ! root        1: /* Definitions for Linux with ELF format
        !             2:    Copyright (C) 1995 Free Software Foundation, Inc.
        !             3:    Contributed by Eric Youngdale.
        !             4:    Modified for stabs-in-ELF by H.J. Lu.
        !             5: 
        !             6: This file is part of GNU CC.
        !             7: 
        !             8: GNU CC is free software; you can redistribute it and/or modify
        !             9: it under the terms of the GNU General Public License as published by
        !            10: the Free Software Foundation; either version 2, or (at your option)
        !            11: any later version.
        !            12: 
        !            13: GNU CC is distributed in the hope that it will be useful,
        !            14: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            16: GNU General Public License for more details.
        !            17: 
        !            18: You should have received a copy of the GNU General Public License
        !            19: along with GNU CC; see the file COPYING.  If not, write to
        !            20: the Free Software Foundation, 59 Temple Place - Suite 330,
        !            21: Boston, MA 02111-1307, USA.  */
        !            22: 
        !            23: /* Don't assume anything about the header files. */
        !            24: #define NO_IMPLICIT_EXTERN_C
        !            25: 
        !            26: #undef HAVE_ATEXIT
        !            27: #define HAVE_ATEXIT
        !            28: 
        !            29: /* Linux uses ctype from glibc.a. I am not sure how complete it is.
        !            30:    For now, we play safe. It may change later. */
        !            31: 
        !            32: #if 0
        !            33: #undef MULTIBYTE_CHARS
        !            34: #define MULTIBYTE_CHARS 1
        !            35: #endif
        !            36: 
        !            37: /* There are conflicting reports about whether this system uses
        !            38:    a different assembler syntax.  [email protected] says # is right.  */
        !            39: #undef COMMENT_BEGIN
        !            40: #define COMMENT_BEGIN "#"
        !            41: 
        !            42: #undef ASM_APP_ON
        !            43: #define ASM_APP_ON "#APP\n"
        !            44: 
        !            45: #undef ASM_APP_OFF
        !            46: #define ASM_APP_OFF "#NO_APP\n"
        !            47: 
        !            48: /* Use stabs instead of DWARF debug format.  */
        !            49: #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
        !            50: #include "svr4.h"
        !            51: 
        !            52: #undef MD_EXEC_PREFIX
        !            53: #undef MD_STARTFILE_PREFIX
        !            54: 
        !            55: /* Output at beginning of assembler file.  */
        !            56: /* The .file command should always begin the output.  */
        !            57: #undef ASM_FILE_START
        !            58: #define ASM_FILE_START(FILE)                                           \
        !            59:   do {                                                                 \
        !            60:        output_file_directive (FILE, main_input_filename);              \
        !            61:        fprintf (FILE, "\t.version\t\"01.01\"\n");                      \
        !            62:   } while (0)
        !            63: 
        !            64: #undef LIBGCC_SPEC
        !            65: #define LIBGCC_SPEC \
        !            66:   "%{!shared:-lgcc}"
        !            67: 
        !            68: 
        !            69: /* Provide a STARTFILE_SPEC appropriate for Linux.  Here we add
        !            70:    the Linux magical crtbegin.o file (see crtstuff.c) which
        !            71:    provides part of the support for getting C++ file-scope static
        !            72:    object constructed before entering `main'. */
        !            73:    
        !            74: #undef STARTFILE_SPEC
        !            75: #define STARTFILE_SPEC \
        !            76:   "%{!shared: \
        !            77:      %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
        !            78:    crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
        !            79: 
        !            80: /* Provide a ENDFILE_SPEC appropriate for Linux.  Here we tack on
        !            81:    the Linux magical crtend.o file (see crtstuff.c) which
        !            82:    provides part of the support for getting C++ file-scope static
        !            83:    object constructed before entering `main', followed by a normal
        !            84:    Linux "finalizer" file, `crtn.o'.  */
        !            85: 
        !            86: #undef ENDFILE_SPEC
        !            87: #define ENDFILE_SPEC \
        !            88:   "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"

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