--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/i386/djgpp.h	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,187 @@
+/* Configuration for an i386 running MS-DOS with DJGPP.
+   Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2004, 2005,
+   2007 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+/* Support generation of DWARF2 debugging info.  */
+#define DWARF2_DEBUGGING_INFO 1
+
+/* Don't assume anything about the header files.  */
+#define NO_IMPLICIT_EXTERN_C
+
+#define HANDLE_SYSV_PRAGMA 1
+
+/* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop).  */
+#define HANDLE_PRAGMA_PACK_PUSH_POP 1
+
+/* If defined, a C expression whose value is a string containing the
+   assembler operation to identify the following data as
+   uninitialized global data.  If not defined, and neither
+   `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
+   uninitialized global data will be output in the data section if
+   `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
+   used.  */
+#undef BSS_SECTION_ASM_OP
+#define BSS_SECTION_ASM_OP "\t.section\t.bss"
+
+/* Define the name of the .data section.  */
+#undef DATA_SECTION_ASM_OP
+#define DATA_SECTION_ASM_OP "\t.section .data"
+
+/* Define the name of the .ident op.  */
+#undef IDENT_ASM_OP
+#define IDENT_ASM_OP "\t.ident\t"
+
+/* Enable alias attribute support.  */
+#ifndef SET_ASM_OP
+#define SET_ASM_OP "\t.set\t"
+#endif
+
+/* Define the name of the .text section.  */
+#undef TEXT_SECTION_ASM_OP
+#define TEXT_SECTION_ASM_OP "\t.section .text"
+
+/* Define standard DJGPP installation paths.  */
+/* We override default /usr or /usr/local part with /dev/env/DJDIR which */
+/* points to actual DJGPP installation directory.  */
+
+/* Standard include directory */
+#undef STANDARD_INCLUDE_DIR
+#define STANDARD_INCLUDE_DIR "/dev/env/DJDIR/include/"
+
+/* Search for as.exe and ld.exe in DJGPP's binary directory.  */ 
+#undef MD_EXEC_PREFIX
+#define MD_EXEC_PREFIX "/dev/env/DJDIR/bin/"
+
+/* Standard DJGPP library and startup files */
+#undef MD_STARTFILE_PREFIX
+#define MD_STARTFILE_PREFIX "/dev/env/DJDIR/lib/"
+
+/* Correctly handle absolute filename detection in cp/xref.c */
+#define FILE_NAME_ABSOLUTE_P(NAME) \
+        (((NAME)[0] == '/') || ((NAME)[0] == '\\') || \
+        (((NAME)[0] >= 'A') && ((NAME)[0] <= 'z') && ((NAME)[1] == ':')))
+
+#define TARGET_OS_CPP_BUILTINS()		\
+  do						\
+    {						\
+	builtin_define_std ("MSDOS");		\
+	builtin_define_std ("GO32");		\
+	builtin_assert ("system=msdos");	\
+    }						\
+  while (0)
+
+/* Include <sys/version.h> so __DJGPP__ and __DJGPP_MINOR__ are defined.  */
+#undef CPP_SPEC
+#define CPP_SPEC "-remap %{posix:-D_POSIX_SOURCE} \
+  -imacros %s../include/sys/version.h"
+
+/* We need to override link_command_spec in gcc.c so support -Tdjgpp.djl.
+   This cannot be done in LINK_SPECS as that LINK_SPECS is processed
+   before library search directories are known by the linker.
+   This avoids problems when specs file is not available. An alternate way,
+   suggested by Robert Hoehne, is to use SUBTARGET_EXTRA_SPECS instead.
+*/ 
+
+#undef LINK_COMMAND_SPEC
+#define LINK_COMMAND_SPEC \
+"%{!fsyntax-only: \
+%{!c:%{!M:%{!MM:%{!E:%{!S:%(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
+\t%{r} %{s} %{t} %{u*} %{x} %{z} %{Z}\
+\t%{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
+\t%{static:} %{L*} %D %o\
+\t%{!nostdlib:%{!nodefaultlibs:%G %L %G}}\
+\t%{!A:%{!nostdlib:%{!nostartfiles:%E}}}\
+\t-Tdjgpp.djl %{T*}}}}}}}\n\
+%{!c:%{!M:%{!MM:%{!E:%{!S:stubify %{v} %{o*:%*} %{!o*:a.out} }}}}}"
+
+/* Always just link in 'libc.a'.  */
+#undef LIB_SPEC
+#define LIB_SPEC "-lc"
+
+/* Pick the right startup code depending on the -pg flag.  */
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC "%{pg:gcrt0.o%s}%{!pg:crt0.o%s}"
+
+/* Make sure that gcc will not look for .h files in /usr/local/include 
+   unless user explicitly requests it.  */
+#undef LOCAL_INCLUDE_DIR
+
+/* Switch into a generic section.  */
+#define TARGET_ASM_NAMED_SECTION  default_coff_asm_named_section
+
+/* This is how to output an assembler line
+   that says to advance the location counter
+   to a multiple of 2**LOG bytes.  */
+
+#undef ASM_OUTPUT_ALIGN
+#define ASM_OUTPUT_ALIGN(FILE,LOG) \
+  if ((LOG) != 0) fprintf ((FILE), "\t.p2align %d\n", LOG)
+
+/* This is how to output a global symbol in the BSS section.  */
+#undef ASM_OUTPUT_ALIGNED_BSS
+#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
+  asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
+
+/* This is how to tell assembler that a symbol is weak  */ 
+#undef ASM_WEAKEN_LABEL
+#define ASM_WEAKEN_LABEL(FILE,NAME) \
+  do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
+       fputc ('\n', FILE); } while (0)
+
+/* djgpp automatically calls its own version of __main, so don't define one
+   in libgcc, nor call one in main().  */
+#define HAS_INIT_SECTION
+
+/* Definitions for types and sizes. Wide characters are 16-bits long so
+   Win32 compiler add-ons will be wide character compatible.  */
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 16
+
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "short unsigned int"
+
+#undef WINT_TYPE
+#define WINT_TYPE "int"
+
+#undef SIZE_TYPE
+#define SIZE_TYPE "long unsigned int"
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE "int"
+
+/* Used to be defined in xm-djgpp.h, but moved here for cross-compilers.  */
+#define LIBSTDCXX "-lstdcxx"
+
+#define TARGET_VERSION fprintf (stderr, " (80386, MS-DOS DJGPP)"); 
+
+/* Warn that -mbnu210 is now obsolete.  */
+#undef  SUBTARGET_OVERRIDE_OPTIONS
+#define SUBTARGET_OVERRIDE_OPTIONS \
+do \
+  { \
+    if (TARGET_BNU210) \
+      {	\
+        warning (0, "-mbnu210 is ignored (option is obsolete)"); \
+      }	\
+  } \
+while (0)
+
+/* Support for C++ templates.  */
+#undef MAKE_DECL_ONE_ONLY
+#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)