[thirdparty/gcc.git] / gcc / config / i386 / mingw32.h

/* Operating system specific defines to be used when targeting GCC for
   hosting on Windows32, using GNU tools and the Windows32 API Library.
   Copyright (C) 1997-2020 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/>.  */

#undef DEFAULT_ABI
#define DEFAULT_ABI MS_ABI

/* By default, target has a 80387, uses IEEE compatible arithmetic,
   returns float values in the 387 and needs stack probes.
   We also align doubles to 64-bits for MSVC default compatibility.
   Additionally we enable MS_BITFIELD_LAYOUT by default.  */

#undef TARGET_SUBTARGET_DEFAULT
#define TARGET_SUBTARGET_DEFAULT \
	(MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS \
	 | MASK_STACK_PROBE | MASK_ALIGN_DOUBLE \
	 | MASK_MS_BITFIELD_LAYOUT)

/* See i386/crtdll.h for an alternative definition. _INTEGRAL_MAX_BITS
   is for compatibility with native compiler.  */
#define EXTRA_OS_CPP_BUILTINS()					\
  do								\
    {								\
      builtin_define ("__MSVCRT__");				\
      builtin_define ("__MINGW32__");			   	\
      builtin_define ("_WIN32");				\
      builtin_define_std ("WIN32");				\
      builtin_define_std ("WINNT");				\
      builtin_define_with_int_value ("_INTEGRAL_MAX_BITS",	\
				     TYPE_PRECISION (intmax_type_node));\
      if (TARGET_64BIT && ix86_abi == MS_ABI)			\
	{							\
	  builtin_define ("__MINGW64__");			\
	  builtin_define_std ("WIN64");				\
	  builtin_define ("_WIN64");				\
	}							\
    }								\
  while (0)

#ifndef TARGET_USE_PTHREAD_BY_DEFAULT
#define SPEC_PTHREAD1 "pthread"
#define SPEC_PTHREAD2 "!no-pthread"
#else
#define SPEC_PTHREAD1 "!no-pthread"
#define SPEC_PTHREAD2 "pthread"
#endif

#undef SUB_LINK_ENTRY32
#undef SUB_LINK_ENTRY64
#define SUB_LINK_ENTRY32 "-e _DllMainCRTStartup@12"
#if defined(USE_MINGW64_LEADING_UNDERSCORES)
#define SUB_LINK_ENTRY64 "-e _DllMainCRTStartup"
#else
#define SUB_LINK_ENTRY64 "-e DllMainCRTStartup"
#endif

#undef SUB_LINK_ENTRY
#if TARGET_64BIT_DEFAULT
#define SUB_LINK_ENTRY SUB_LINK_ENTRY64
#else
#define SUB_LINK_ENTRY SUB_LINK_ENTRY32
#endif

#undef NATIVE_SYSTEM_HEADER_COMPONENT
#define NATIVE_SYSTEM_HEADER_COMPONENT "MINGW"

#undef CPP_SPEC
#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{mthreads:-D_MT} " \
		 "%{" SPEC_PTHREAD1 ":-D_REENTRANT} " \
		 "%{" SPEC_PTHREAD2 ": } "

/* For Windows applications, include more libraries, but always include
   kernel32.  */
#undef LIB_SPEC
#define LIB_SPEC "%{pg:-lgmon} %{" SPEC_PTHREAD1 ":-lpthread} " \
		 "%{" SPEC_PTHREAD2 ": } " \
		 "%{mwindows:-lgdi32 -lcomdlg32} " \
     "%{fvtable-verify=preinit:-lvtv -lpsapi; \
        fvtable-verify=std:-lvtv -lpsapi} " \
                 "-ladvapi32 -lshell32 -luser32 -lkernel32"

/* Weak symbols do not get resolved if using a Windows dll import lib.
   Make the unwind registration references strong undefs.  */
#if DWARF2_UNWIND_INFO
/* DW2-unwind is just available for 32-bit mode.  */
#if TARGET_64BIT_DEFAULT
#define SHARED_LIBGCC_UNDEFS_SPEC \
  "%{m32: %{shared-libgcc: -u ___register_frame_info -u ___deregister_frame_info}}"
#else
#define SHARED_LIBGCC_UNDEFS_SPEC \
 "%{shared-libgcc: -u ___register_frame_info -u ___deregister_frame_info}"
#endif
#else
#define SHARED_LIBGCC_UNDEFS_SPEC ""
#endif

#undef  SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS						\
  { "shared_libgcc_undefs", SHARED_LIBGCC_UNDEFS_SPEC }

#if ! MINGW_DEFAULT_LARGE_ADDR_AWARE
/* This is used without --enable-large-address-aware.  */
# define LINK_SPEC_LARGE_ADDR_AWARE ""
#elif ! TARGET_BI_ARCH
/* This is used on i686-pc-mingw32 with --enable-large-address-aware.  */
# define LINK_SPEC_LARGE_ADDR_AWARE \
  "%{!shared:%{!mdll:--large-address-aware}}"
#elif TARGET_64BIT_DEFAULT
/* This is used on x86_64-pc-mingw32 with --enable-large-address-aware.
   ??? It probably doesn't work, because the linker emulation defaults
   to i386pep, the 64-bit mode that does not support
   --large-address-aware, and x86_64-pc-mingw32 does not override the
   emulation to i386pe for -m32, unlike x86_64-w64-mingw32.  */
# define LINK_SPEC_LARGE_ADDR_AWARE \
  "%{!shared:%{!mdll:%{m32:--large-address-aware}}}"
#else
/* This would only be used if someone introduced a biarch
   configuration that defaulted to 32-bit.  */
# define LINK_SPEC_LARGE_ADDR_AWARE \
  "%{!shared:%{!mdll:%{!m64:--large-address-aware}}}"
#endif

#define LINK_SPEC "%{mwindows:--subsystem windows} \
  %{mconsole:--subsystem console} \
  %{shared: %{mdll: %eshared and mdll are not compatible}} \
  %{shared: --shared} %{mdll:--dll} \
  %{static:-Bstatic} %{!static:-Bdynamic} \
  %{shared|mdll: " SUB_LINK_ENTRY " --enable-auto-image-base} \
  " LINK_SPEC_LARGE_ADDR_AWARE "\
  %(shared_libgcc_undefs)"

/* Include in the mingw32 libraries with libgcc */
#ifdef ENABLE_SHARED_LIBGCC
#define SHARED_LIBGCC_SPEC " \
 %{static|static-libgcc:-lgcc -lgcc_eh} \
 %{!static: \
   %{!static-libgcc: \
     %{!shared: \
       %{!shared-libgcc:-lgcc -lgcc_eh} \
       %{shared-libgcc:-lgcc_s -lgcc} \
      } \
     %{shared:-lgcc_s -lgcc} \
    } \
  } "
#else
#define SHARED_LIBGCC_SPEC " -lgcc "
#endif
#undef REAL_LIBGCC_SPEC
#define REAL_LIBGCC_SPEC \
  "%{mthreads:-lmingwthrd} -lmingw32 \
   " SHARED_LIBGCC_SPEC " \
   -lmoldname -lmingwex -lmsvcrt"

#undef STARTFILE_SPEC
#define STARTFILE_SPEC "%{shared|mdll:dllcrt2%O%s} \
  %{!shared:%{!mdll:crt2%O%s}} %{pg:gcrt2%O%s} \
  crtbegin.o%s \
  %{fvtable-verify=none:%s; \
    fvtable-verify=preinit:vtv_start.o%s; \
    fvtable-verify=std:vtv_start.o%s}"

#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
  "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
   %{!shared:%:if-exists(default-manifest.o%s)}\
   %{fvtable-verify=none:%s; \
    fvtable-verify=preinit:vtv_end.o%s; \
    fvtable-verify=std:vtv_end.o%s} \
  crtend.o%s"

/* Override startfile prefix defaults.  */
#ifndef STANDARD_STARTFILE_PREFIX_1
#define STANDARD_STARTFILE_PREFIX_1 "/mingw/lib/"
#endif
#ifndef STANDARD_STARTFILE_PREFIX_2
#define STANDARD_STARTFILE_PREFIX_2 ""
#endif

/* For native mingw-version we need to take care that NATIVE_SYSTEM_HEADER_DIR
   macro contains POSIX-style path.  See bug 52947.  */
#undef NATIVE_SYSTEM_HEADER_DIR
#define NATIVE_SYSTEM_HEADER_DIR "/mingw/include"

/* Output STRING, a string representing a filename, to FILE.
   We canonicalize it to be in Unix format (backslashes are replaced
   forward slashes.  */
#undef OUTPUT_QUOTED_STRING
#define OUTPUT_QUOTED_STRING(FILE, STRING)               \
do {						         \
  const char *_string = (const char *) (STRING);	 \
  char c;					         \
						         \
  putc ('\"', (FILE));				         \
						         \
  while ((c = *_string++) != 0)			         \
    {						         \
      if (c == '\\')				         \
	c = '/';				         \
						         \
      if (ISPRINT (c))                                   \
        {                                                \
          if (c == '\"')			         \
	    putc ('\\', (FILE));		         \
          putc (c, (FILE));			         \
        }                                                \
      else                                               \
        fprintf ((FILE), "\\%03o", (unsigned char) c);	 \
    }						         \
						         \
  putc ('\"', (FILE));					 \
} while (0)

/* Define as short unsigned for compatibility with MS runtime.  */
#undef WINT_TYPE
#define WINT_TYPE "short unsigned int"

/* mingw32 uses the  -mthreads option to enable thread support.  */
#undef GOMP_SELF_SPECS
#define GOMP_SELF_SPECS "%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): " \
			"-mthreads -pthread}"
#undef GTM_SELF_SPECS
#define GTM_SELF_SPECS "%{fgnu-tm:-mthreads -pthread}"

/* mingw32 atexit function is safe to use in shared libraries.  Use it
   to register C++ static destructors.  */
#define TARGET_CXX_USE_ATEXIT_FOR_CXA_ATEXIT hook_bool_void_true

/* Contains a pointer to type target_ovr_attr defining the target specific
   overrides of format attributes.  See c-format.h for structure
   definition.  */
#undef TARGET_OVERRIDES_FORMAT_ATTRIBUTES
#define TARGET_OVERRIDES_FORMAT_ATTRIBUTES mingw_format_attribute_overrides

/* Specify the count of elements in TARGET_OVERRIDES_ATTRIBUTE.  */
#undef TARGET_OVERRIDES_FORMAT_ATTRIBUTES_COUNT
#define TARGET_OVERRIDES_FORMAT_ATTRIBUTES_COUNT 3

/* Custom initialization for warning -Wpedantic-ms-format for c-format.  */
#undef TARGET_OVERRIDES_FORMAT_INIT
#define TARGET_OVERRIDES_FORMAT_INIT msformat_init

/* MS specific format attributes for ms_printf, ms_scanf, ms_strftime.  */
#undef TARGET_FORMAT_TYPES
#define TARGET_FORMAT_TYPES mingw_format_attributes

#undef TARGET_N_FORMAT_TYPES
#define TARGET_N_FORMAT_TYPES 3

#define HAVE_ENABLE_EXECUTE_STACK
#undef  CHECK_EXECUTE_STACK_ENABLED
#define CHECK_EXECUTE_STACK_ENABLED flag_setstackexecutable

/* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygming. */
/* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygwin. */
#if DWARF2_UNWIND_INFO
#define LIBGCC_EH_EXTN "_dw2"
#else
#define LIBGCC_EH_EXTN "_sjlj"
#endif
#define LIBGCC_SONAME "libgcc_s" LIBGCC_EH_EXTN "-1.dll"
Commit	Line	Data
	1	/* Operating system specific defines to be used when targeting GCC for
	2	hosting on Windows32, using GNU tools and the Windows32 API Library.
	3	Copyright (C) 1997-2020 Free Software Foundation, Inc.
	4
	5	This file is part of GCC.
	6
	7	GCC is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 3, or (at your option)
	10	any later version.
	11
	12	GCC is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with GCC; see the file COPYING3. If not see
	19	<http://www.gnu.org/licenses/>. */
	20
	21	#undef DEFAULT_ABI
	22	#define DEFAULT_ABI MS_ABI
	23
	24	/* By default, target has a 80387, uses IEEE compatible arithmetic,
	25	returns float values in the 387 and needs stack probes.
	26	We also align doubles to 64-bits for MSVC default compatibility.
	27	Additionally we enable MS_BITFIELD_LAYOUT by default. */
	28
	29	#undef TARGET_SUBTARGET_DEFAULT
	30	#define TARGET_SUBTARGET_DEFAULT \
	31	(MASK_80387 \| MASK_IEEE_FP \| MASK_FLOAT_RETURNS \
	32	\| MASK_STACK_PROBE \| MASK_ALIGN_DOUBLE \
	33	\| MASK_MS_BITFIELD_LAYOUT)
	34
	35	/* See i386/crtdll.h for an alternative definition. _INTEGRAL_MAX_BITS
	36	is for compatibility with native compiler. */
	37	#define EXTRA_OS_CPP_BUILTINS() \
	38	do \
	39	{ \
	40	builtin_define ("__MSVCRT__"); \
	41	builtin_define ("__MINGW32__"); \
	42	builtin_define ("_WIN32"); \
	43	builtin_define_std ("WIN32"); \
	44	builtin_define_std ("WINNT"); \
	45	builtin_define_with_int_value ("_INTEGRAL_MAX_BITS", \
	46	TYPE_PRECISION (intmax_type_node));\
	47	if (TARGET_64BIT && ix86_abi == MS_ABI) \
	48	{ \
	49	builtin_define ("__MINGW64__"); \
	50	builtin_define_std ("WIN64"); \
	51	builtin_define ("_WIN64"); \
	52	} \
	53	} \
	54	while (0)
	55
	56	#ifndef TARGET_USE_PTHREAD_BY_DEFAULT
	57	#define SPEC_PTHREAD1 "pthread"
	58	#define SPEC_PTHREAD2 "!no-pthread"
	59	#else
	60	#define SPEC_PTHREAD1 "!no-pthread"
	61	#define SPEC_PTHREAD2 "pthread"
	62	#endif
	63
	64	#undef SUB_LINK_ENTRY32
	65	#undef SUB_LINK_ENTRY64
	66	#define SUB_LINK_ENTRY32 "-e _DllMainCRTStartup@12"
	67	#if defined(USE_MINGW64_LEADING_UNDERSCORES)
	68	#define SUB_LINK_ENTRY64 "-e _DllMainCRTStartup"
	69	#else
	70	#define SUB_LINK_ENTRY64 "-e DllMainCRTStartup"
	71	#endif
	72
	73	#undef SUB_LINK_ENTRY
	74	#if TARGET_64BIT_DEFAULT
	75	#define SUB_LINK_ENTRY SUB_LINK_ENTRY64
	76	#else
	77	#define SUB_LINK_ENTRY SUB_LINK_ENTRY32
	78	#endif
	79
	80	#undef NATIVE_SYSTEM_HEADER_COMPONENT
	81	#define NATIVE_SYSTEM_HEADER_COMPONENT "MINGW"
	82
	83	#undef CPP_SPEC
	84	#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{mthreads:-D_MT} " \
	85	"%{" SPEC_PTHREAD1 ":-D_REENTRANT} " \
	86	"%{" SPEC_PTHREAD2 ": } "
	87
	88	/* For Windows applications, include more libraries, but always include
	89	kernel32. */
	90	#undef LIB_SPEC
	91	#define LIB_SPEC "%{pg:-lgmon} %{" SPEC_PTHREAD1 ":-lpthread} " \
	92	"%{" SPEC_PTHREAD2 ": } " \
	93	"%{mwindows:-lgdi32 -lcomdlg32} " \
	94	"%{fvtable-verify=preinit:-lvtv -lpsapi; \
	95	fvtable-verify=std:-lvtv -lpsapi} " \
	96	"-ladvapi32 -lshell32 -luser32 -lkernel32"
	97
	98	/* Weak symbols do not get resolved if using a Windows dll import lib.
	99	Make the unwind registration references strong undefs. */
	100	#if DWARF2_UNWIND_INFO
	101	/* DW2-unwind is just available for 32-bit mode. */
	102	#if TARGET_64BIT_DEFAULT
	103	#define SHARED_LIBGCC_UNDEFS_SPEC \
	104	"%{m32: %{shared-libgcc: -u ___register_frame_info -u ___deregister_frame_info}}"
	105	#else
	106	#define SHARED_LIBGCC_UNDEFS_SPEC \
	107	"%{shared-libgcc: -u ___register_frame_info -u ___deregister_frame_info}"
	108	#endif
	109	#else
	110	#define SHARED_LIBGCC_UNDEFS_SPEC ""
	111	#endif
	112
	113	#undef SUBTARGET_EXTRA_SPECS
	114	#define SUBTARGET_EXTRA_SPECS \
	115	{ "shared_libgcc_undefs", SHARED_LIBGCC_UNDEFS_SPEC }
	116
	117	#if ! MINGW_DEFAULT_LARGE_ADDR_AWARE
	118	/* This is used without --enable-large-address-aware. */
	119	# define LINK_SPEC_LARGE_ADDR_AWARE ""
	120	#elif ! TARGET_BI_ARCH
	121	/* This is used on i686-pc-mingw32 with --enable-large-address-aware. */
	122	# define LINK_SPEC_LARGE_ADDR_AWARE \
	123	"%{!shared:%{!mdll:--large-address-aware}}"
	124	#elif TARGET_64BIT_DEFAULT
	125	/* This is used on x86_64-pc-mingw32 with --enable-large-address-aware.
	126	??? It probably doesn't work, because the linker emulation defaults
	127	to i386pep, the 64-bit mode that does not support
	128	--large-address-aware, and x86_64-pc-mingw32 does not override the
	129	emulation to i386pe for -m32, unlike x86_64-w64-mingw32. */
	130	# define LINK_SPEC_LARGE_ADDR_AWARE \
	131	"%{!shared:%{!mdll:%{m32:--large-address-aware}}}"
	132	#else
	133	/* This would only be used if someone introduced a biarch
	134	configuration that defaulted to 32-bit. */
	135	# define LINK_SPEC_LARGE_ADDR_AWARE \
	136	"%{!shared:%{!mdll:%{!m64:--large-address-aware}}}"
	137	#endif
	138
	139	#define LINK_SPEC "%{mwindows:--subsystem windows} \
	140	%{mconsole:--subsystem console} \
	141	%{shared: %{mdll: %eshared and mdll are not compatible}} \
	142	%{shared: --shared} %{mdll:--dll} \
	143	%{static:-Bstatic} %{!static:-Bdynamic} \
	144	%{shared\|mdll: " SUB_LINK_ENTRY " --enable-auto-image-base} \
	145	" LINK_SPEC_LARGE_ADDR_AWARE "\
	146	%(shared_libgcc_undefs)"
	147
	148	/* Include in the mingw32 libraries with libgcc */
	149	#ifdef ENABLE_SHARED_LIBGCC
	150	#define SHARED_LIBGCC_SPEC " \
	151	%{static\|static-libgcc:-lgcc -lgcc_eh} \
	152	%{!static: \
	153	%{!static-libgcc: \
	154	%{!shared: \
	155	%{!shared-libgcc:-lgcc -lgcc_eh} \
	156	%{shared-libgcc:-lgcc_s -lgcc} \
	157	} \
	158	%{shared:-lgcc_s -lgcc} \
	159	} \
	160	} "
	161	#else
	162	#define SHARED_LIBGCC_SPEC " -lgcc "
	163	#endif
	164	#undef REAL_LIBGCC_SPEC
	165	#define REAL_LIBGCC_SPEC \
	166	"%{mthreads:-lmingwthrd} -lmingw32 \
	167	" SHARED_LIBGCC_SPEC " \
	168	-lmoldname -lmingwex -lmsvcrt"
	169
	170	#undef STARTFILE_SPEC
	171	#define STARTFILE_SPEC "%{shared\|mdll:dllcrt2%O%s} \
	172	%{!shared:%{!mdll:crt2%O%s}} %{pg:gcrt2%O%s} \
	173	crtbegin.o%s \
	174	%{fvtable-verify=none:%s; \
	175	fvtable-verify=preinit:vtv_start.o%s; \
	176	fvtable-verify=std:vtv_start.o%s}"
	177
	178	#undef ENDFILE_SPEC
	179	#define ENDFILE_SPEC \
	180	"%{Ofast\|ffast-math\|funsafe-math-optimizations:crtfastmath.o%s} \
	181	%{!shared:%:if-exists(default-manifest.o%s)}\
	182	%{fvtable-verify=none:%s; \
	183	fvtable-verify=preinit:vtv_end.o%s; \
	184	fvtable-verify=std:vtv_end.o%s} \
	185	crtend.o%s"
	186
	187	/* Override startfile prefix defaults. */
	188	#ifndef STANDARD_STARTFILE_PREFIX_1
	189	#define STANDARD_STARTFILE_PREFIX_1 "/mingw/lib/"
	190	#endif
	191	#ifndef STANDARD_STARTFILE_PREFIX_2
	192	#define STANDARD_STARTFILE_PREFIX_2 ""
	193	#endif
	194
	195	/* For native mingw-version we need to take care that NATIVE_SYSTEM_HEADER_DIR
	196	macro contains POSIX-style path. See bug 52947. */
	197	#undef NATIVE_SYSTEM_HEADER_DIR
	198	#define NATIVE_SYSTEM_HEADER_DIR "/mingw/include"
	199
	200	/* Output STRING, a string representing a filename, to FILE.
	201	We canonicalize it to be in Unix format (backslashes are replaced
	202	forward slashes. */
	203	#undef OUTPUT_QUOTED_STRING
	204	#define OUTPUT_QUOTED_STRING(FILE, STRING) \
	205	do { \
	206	const char _string = (const char ) (STRING); \
	207	char c; \
	208	\
	209	putc ('\"', (FILE)); \
	210	\
	211	while ((c = *_string++) != 0) \
	212	{ \
	213	if (c == '\\') \
	214	c = '/'; \
	215	\
	216	if (ISPRINT (c)) \
	217	{ \
	218	if (c == '\"') \
	219	putc ('\\', (FILE)); \
	220	putc (c, (FILE)); \
	221	} \
	222	else \
	223	fprintf ((FILE), "\\%03o", (unsigned char) c); \
	224	} \
	225	\
	226	putc ('\"', (FILE)); \
	227	} while (0)
	228
	229	/* Define as short unsigned for compatibility with MS runtime. */
	230	#undef WINT_TYPE
	231	#define WINT_TYPE "short unsigned int"
	232
	233	/* mingw32 uses the -mthreads option to enable thread support. */
	234	#undef GOMP_SELF_SPECS
	235	#define GOMP_SELF_SPECS "%{fopenacc\|fopenmp\|%:gt(%{ftree-parallelize-loops=:%} 1): " \
	236	"-mthreads -pthread}"
	237	#undef GTM_SELF_SPECS
	238	#define GTM_SELF_SPECS "%{fgnu-tm:-mthreads -pthread}"
	239
	240	/* mingw32 atexit function is safe to use in shared libraries. Use it
	241	to register C++ static destructors. */
	242	#define TARGET_CXX_USE_ATEXIT_FOR_CXA_ATEXIT hook_bool_void_true
	243
	244	/* Contains a pointer to type target_ovr_attr defining the target specific
	245	overrides of format attributes. See c-format.h for structure
	246	definition. */
	247	#undef TARGET_OVERRIDES_FORMAT_ATTRIBUTES
	248	#define TARGET_OVERRIDES_FORMAT_ATTRIBUTES mingw_format_attribute_overrides
	249
	250	/* Specify the count of elements in TARGET_OVERRIDES_ATTRIBUTE. */
	251	#undef TARGET_OVERRIDES_FORMAT_ATTRIBUTES_COUNT
	252	#define TARGET_OVERRIDES_FORMAT_ATTRIBUTES_COUNT 3
	253
	254	/* Custom initialization for warning -Wpedantic-ms-format for c-format. */
	255	#undef TARGET_OVERRIDES_FORMAT_INIT
	256	#define TARGET_OVERRIDES_FORMAT_INIT msformat_init
	257
	258	/* MS specific format attributes for ms_printf, ms_scanf, ms_strftime. */
	259	#undef TARGET_FORMAT_TYPES
	260	#define TARGET_FORMAT_TYPES mingw_format_attributes
	261
	262	#undef TARGET_N_FORMAT_TYPES
	263	#define TARGET_N_FORMAT_TYPES 3
	264
	265	#define HAVE_ENABLE_EXECUTE_STACK
	266	#undef CHECK_EXECUTE_STACK_ENABLED
	267	#define CHECK_EXECUTE_STACK_ENABLED flag_setstackexecutable
	268
	269	/* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygming. */
	270	/* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygwin. */
	271	#if DWARF2_UNWIND_INFO
	272	#define LIBGCC_EH_EXTN "_dw2"
	273	#else
	274	#define LIBGCC_EH_EXTN "_sjlj"
	275	#endif
	276	#define LIBGCC_SONAME "libgcc_s" LIBGCC_EH_EXTN "-1.dll"
	277