gcc/config/i386/cygwin.h

   1 /* Operating system specific defines to be used when targeting GCC for
   2    hosting on Windows32, using a Unix style C library and tools.
   3    Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
   4    2007, 2008, 2009, 2010 Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC 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 3, or (at your option)
  11 any later version.
  12
  13 GCC 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 GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #define TARGET_VERSION fprintf (stderr, " (x86 Cygwin)");
  23
  24 #define EXTRA_OS_CPP_BUILTINS()  /* Nothing.  */
  25
  26 #undef CPP_SPEC
  27 #define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE} \
  28   -D__CYGWIN32__ -D__CYGWIN__ %{!ansi:-Dunix} -D__unix__ -D__unix \
  29   %{mwin32:-DWIN32 -D_WIN32 -D__WIN32 -D__WIN32__ %{!ansi:-DWINNT}} \
  30   %{!nostdinc:%{!mno-win32:-idirafter ../include/w32api%s -idirafter ../../include/w32api%s}}\
  31 "
  32
  33 #undef STARTFILE_SPEC
  34 #define STARTFILE_SPEC "\
  35   %{!shared: %{!mdll: crt0%O%s \
  36   %{pg:gcrt0%O%s}}}\
  37   crtbegin.o%s"
  38
  39 #undef ENDFILE_SPEC
  40 #define ENDFILE_SPEC \
  41   "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s}\
  42    crtend.o%s"
  43
  44 /* Normally, -lgcc is not needed since everything in it is in the DLL, but we
  45    want to allow things to be added to it when installing new versions of
  46    GCC without making a new CYGWIN.DLL, so we leave it.  Profiling is handled
  47    by calling the init function from main.  */
  48
  49 #ifdef ENABLE_SHARED_LIBGCC
  50 #define SHARED_LIBGCC_SPEC " \
  51  %{static|static-libgcc:-lgcc -lgcc_eh} \
  52  %{!static: \
  53    %{!static-libgcc: \
  54      %{!shared: \
  55        %{!shared-libgcc:-lgcc -lgcc_eh} \
  56        %{shared-libgcc:-lgcc_s -lgcc} \
  57       } \
  58      %{shared:-lgcc_s -lgcc} \
  59     } \
  60   } "
  61 #else
  62 #define SHARED_LIBGCC_SPEC " -lgcc "
  63 #endif
  64
  65 #undef REAL_LIBGCC_SPEC
  66 #define REAL_LIBGCC_SPEC SHARED_LIBGCC_SPEC
  67
  68 /* We have to dynamic link to get to the system DLLs.  All of libc, libm and
  69    the Unix stuff is in cygwin.dll.  The import library is called
  70    'libcygwin.a'.  For Windows applications, include more libraries, but
  71    always include kernel32.  We'd like to specific subsystem windows to
  72    ld, but that doesn't work just yet.  */
  73
  74 #undef LIB_SPEC
  75 #define LIB_SPEC "\
  76   %{pg:-lgmon} \
  77   -lcygwin \
  78   %{mwindows:-lgdi32 -lcomdlg32} \
  79   -ladvapi32 -lshell32 -luser32 -lkernel32"
  80
  81 /* To implement C++ function replacement we always wrap the cxx
  82    malloc-like operators.  See N2800 #17.6.4.6 [replacement.functions] */
  83 #define CXX_WRAP_SPEC_LIST " \
  84   --wrap _Znwj \
  85   --wrap _Znaj \
  86   --wrap _ZdlPv \
  87   --wrap _ZdaPv \
  88   --wrap _ZnwjRKSt9nothrow_t \
  89   --wrap _ZnajRKSt9nothrow_t \
  90   --wrap _ZdlPvRKSt9nothrow_t \
  91   --wrap _ZdaPvRKSt9nothrow_t \
  92 "
  93
  94 #if defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS)
  95
  96 #if USE_CYGWIN_LIBSTDCXX_WRAPPERS
  97 /* Default on, only explict -mno disables.  */
  98 #define CXX_WRAP_SPEC_OPT "!mno-use-libstdc-wrappers"
  99 #else
 100 /* Default off, only explict -m enables.  */
 101 #define CXX_WRAP_SPEC_OPT "muse-libstdc-wrappers"
 102 #endif
 103
 104 #define CXX_WRAP_SPEC "%{" CXX_WRAP_SPEC_OPT ":" CXX_WRAP_SPEC_LIST "}"
 105
 106 #else /* !defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS)  */
 107
 108 #define CXX_WRAP_SPEC ""
 109
 110 #endif /* ?defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS) */
 111
 112 #define LINK_SPEC "\
 113   %{mwindows:--subsystem windows} \
 114   %{mconsole:--subsystem console} \
 115   " CXX_WRAP_SPEC " \
 116   %{shared: %{mdll: %eshared and mdll are not compatible}} \
 117   %{shared: --shared} %{mdll:--dll} \
 118   %{static:-Bstatic} %{!static:-Bdynamic} \
 119   %{shared|mdll: --enable-auto-image-base -e __cygwin_dll_entry@12} \
 120   --dll-search-prefix=cyg -tsaware"
 121
 122 /* Binutils does not handle weak symbols from dlls correctly.  For now,
 123    do not use them unnecessarily in gthr-posix.h.  */
 124 #define GTHREAD_USE_WEAK 0
 125
 126 /* Every program on cygwin links against cygwin1.dll which contains
 127    the pthread routines.  There is no need to explicitly link them
 128    and the -pthread flag is not recognized.  */
 129 #undef GOMP_SELF_SPECS
 130 #define GOMP_SELF_SPECS ""
 131
 132 /* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygwin. */
 133 #if DWARF2_UNWIND_INFO
 134 #define LIBGCC_EH_EXTN ""
 135 #else
 136 #define LIBGCC_EH_EXTN "-sjlj"
 137 #endif
 138 #define LIBGCC_SONAME "cyggcc_s" LIBGCC_EH_EXTN "-1.dll"
 139
 140 /* We should find a way to not have to update this manually.  */
 141 #define LIBGCJ_SONAME "cyggcj" /*LIBGCC_EH_EXTN*/ "-12.dll"
 142