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) 1995-2014 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 #define EXTRA_OS_CPP_BUILTINS()                                 \
  22   do                                                            \
  23     {                                                           \
  24       builtin_define ("__CYGWIN__");                            \
  25       if (!TARGET_64BIT)                                        \
  26         builtin_define ("__CYGWIN32__");                        \
  27       builtin_define ("__unix__");                              \
  28       builtin_define ("__unix");                                \
  29     }                                                           \
  30   while (0)
  31
  32 #undef CPP_SPEC
  33 #define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE} \
  34   %{!ansi:-Dunix} \
  35   %{pthread:-D_REENTRANT} \
  36   %{mwin32:-DWIN32 -D_WIN32 -D__WIN32 -D__WIN32__ %{!ansi:-DWINNT}} \
  37   %{!nostdinc:%{!mno-win32:-idirafter ../include/w32api%s -idirafter ../../include/w32api%s}}\
  38 "
  39
  40 #undef STARTFILE_SPEC
  41 #define STARTFILE_SPEC "\
  42   %{!shared: %{!mdll: crt0%O%s \
  43   %{pg:gcrt0%O%s}}}\
  44   %{shared:crtbeginS.o%s;:crtbegin.o%s}"
  45
  46 #undef ENDFILE_SPEC
  47 #define ENDFILE_SPEC \
  48   "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}\
  49    %{!shared:%:if-exists(default-manifest.o%s)}\
  50    crtend.o%s"
  51
  52 /* Normally, -lgcc is not needed since everything in it is in the DLL, but we
  53    want to allow things to be added to it when installing new versions of
  54    GCC without making a new CYGWIN.DLL, so we leave it.  Profiling is handled
  55    by calling the init function from main.  */
  56
  57 #ifdef ENABLE_SHARED_LIBGCC
  58 #define SHARED_LIBGCC_SPEC " \
  59  %{static|static-libgcc:-lgcc -lgcc_eh} \
  60  %{!static: \
  61    %{!static-libgcc: \
  62      -lgcc_s -lgcc \
  63     } \
  64   } "
  65 #else
  66 #define SHARED_LIBGCC_SPEC " -lgcc "
  67 #endif
  68
  69 #undef REAL_LIBGCC_SPEC
  70 #define REAL_LIBGCC_SPEC SHARED_LIBGCC_SPEC
  71
  72 /* We have to dynamic link to get to the system DLLs.  All of libc, libm and
  73    the Unix stuff is in cygwin.dll.  The import library is called
  74    'libcygwin.a'.  For Windows applications, include more libraries, but
  75    always include kernel32.  We'd like to specific subsystem windows to
  76    ld, but that doesn't work just yet.  */
  77
  78 #undef LIB_SPEC
  79 #define LIB_SPEC "\
  80   %{pg:-lgmon} \
  81   %{pthread: } \
  82   -lcygwin \
  83   %{mwindows:-lgdi32 -lcomdlg32} \
  84   -ladvapi32 -lshell32 -luser32 -lkernel32"
  85
  86 /* To implement C++ function replacement we always wrap the cxx
  87    malloc-like operators.  See N2800 #17.6.4.6 [replacement.functions] */
  88 #define CXX_WRAP_SPEC_LIST " \
  89   --wrap _Znwj \
  90   --wrap _Znaj \
  91   --wrap _ZdlPv \
  92   --wrap _ZdaPv \
  93   --wrap _ZnwjRKSt9nothrow_t \
  94   --wrap _ZnajRKSt9nothrow_t \
  95   --wrap _ZdlPvRKSt9nothrow_t \
  96   --wrap _ZdaPvRKSt9nothrow_t \
  97 "
  98
  99 #if defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS)
 100
 101 #if USE_CYGWIN_LIBSTDCXX_WRAPPERS
 102 /* Default on, only explict -mno disables.  */
 103 #define CXX_WRAP_SPEC_OPT "!mno-use-libstdc-wrappers"
 104 #else
 105 /* Default off, only explict -m enables.  */
 106 #define CXX_WRAP_SPEC_OPT "muse-libstdc-wrappers"
 107 #endif
 108
 109 #define CXX_WRAP_SPEC "%{" CXX_WRAP_SPEC_OPT ":" CXX_WRAP_SPEC_LIST "}"
 110
 111 #else /* !defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS)  */
 112
 113 #define CXX_WRAP_SPEC ""
 114
 115 #endif /* ?defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS) */
 116
 117 #define LINK_SPEC "\
 118   %{mwindows:--subsystem windows} \
 119   %{mconsole:--subsystem console} \
 120   " CXX_WRAP_SPEC " \
 121   %{shared: %{mdll: %eshared and mdll are not compatible}} \
 122   %{shared: --shared} %{mdll:--dll} \
 123   %{static:-Bstatic} %{!static:-Bdynamic} \
 124   %{shared|mdll: --enable-auto-image-base -e __cygwin_dll_entry@12} \
 125   --dll-search-prefix=cyg \
 126   %{!shared: %{!mdll: --large-address-aware --tsaware}}"
 127
 128 /* Binutils does not handle weak symbols from dlls correctly.  For now,
 129    do not use them unnecessarily in gthr-posix.h.  */
 130 #define GTHREAD_USE_WEAK 0
 131
 132 /* Every program on cygwin links against cygwin1.dll which contains
 133    the pthread routines.  There is no need to explicitly link them
 134    and the -pthread flag is accepted only for compatibility.  */
 135 #undef GOMP_SELF_SPECS
 136 #define GOMP_SELF_SPECS ""
 137 #undef GTM_SELF_SPECS
 138 #define GTM_SELF_SPECS ""
 139
 140 /* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygwin. */
 141 #if DWARF2_UNWIND_INFO
 142 #define LIBGCC_EH_EXTN ""
 143 #else
 144 #define LIBGCC_EH_EXTN "-sjlj"
 145 #endif
 146 #define LIBGCC_SONAME "cyggcc_s" LIBGCC_EH_EXTN "-1.dll"
 147
 148 /* We should find a way to not have to update this manually.  */
 149 #define LIBGCJ_SONAME "cyggcj" /*LIBGCC_EH_EXTN*/ "-15.dll"
 150