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) 1995-2021 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 #define EXTRA_TARGET_D_OS_VERSIONS() \ 33 do \ 34 { \ 35 builtin_version ("Cygwin"); \ 36 builtin_version ("Posix"); \ 37 builtin_version ("CRuntime_Newlib"); \ 38 } \ 39 while (0) 40 41 #undef CPP_SPEC 42 #define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE} \ 43 %{!ansi:-Dunix} \ 44 %{pthread:-D_REENTRANT} \ 45 %{mwin32:-DWIN32 -D_WIN32 -D__WIN32 -D__WIN32__ %{!ansi:-DWINNT}} \ 46 %{!nostdinc:%{!mno-win32:-idirafter ../include/w32api%s -idirafter ../../include/w32api%s}}\ 47 " 48 49 #undef STARTFILE_SPEC 50 #define STARTFILE_SPEC "\ 51 %{!shared: %{!mdll: crt0%O%s \ 52 %{pg:gcrt0%O%s}}}\ 53 %{shared:crtbeginS.o%s;:crtbegin.o%s} \ 54 %{fvtable-verify=none:%s; \ 55 fvtable-verify=preinit:vtv_start.o%s; \ 56 fvtable-verify=std:vtv_start.o%s}" 57 58 #undef ENDFILE_SPEC 59 #define ENDFILE_SPEC \ 60 "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}\ 61 %{!shared:%:if-exists(default-manifest.o%s)}\ 62 %{fvtable-verify=none:%s; \ 63 fvtable-verify=preinit:vtv_end.o%s; \ 64 fvtable-verify=std:vtv_end.o%s} \ 65 crtend.o%s" 66 67 /* Normally, -lgcc is not needed since everything in it is in the DLL, but we 68 want to allow things to be added to it when installing new versions of 69 GCC without making a new CYGWIN.DLL, so we leave it. Profiling is handled 70 by calling the init function from main. */ 71 72 #ifdef ENABLE_SHARED_LIBGCC 73 #define SHARED_LIBGCC_SPEC " \ 74 %{static|static-libgcc:-lgcc -lgcc_eh} \ 75 %{!static: \ 76 %{!static-libgcc: \ 77 -lgcc_s -lgcc \ 78 } \ 79 } " 80 #else 81 #define SHARED_LIBGCC_SPEC " -lgcc " 82 #endif 83 84 #undef REAL_LIBGCC_SPEC 85 #define REAL_LIBGCC_SPEC SHARED_LIBGCC_SPEC 86 87 /* We have to dynamic link to get to the system DLLs. All of libc, libm and 88 the Unix stuff is in cygwin.dll. The import library is called 89 'libcygwin.a'. For Windows applications, include more libraries, but 90 always include kernel32. We'd like to specific subsystem windows to 91 ld, but that doesn't work just yet. */ 92 93 #undef LIB_SPEC 94 #define LIB_SPEC "\ 95 %{pg:-lgmon} \ 96 %{pthread: } \ 97 -lcygwin \ 98 %{mwindows:-lgdi32 -lcomdlg32} \ 99 %{fvtable-verify=preinit:-lvtv -lpsapi; \ 100 fvtable-verify=std:-lvtv -lpsapi} \ 101 -ladvapi32 -lshell32 -luser32 -lkernel32" 102 103 /* To implement C++ function replacement we always wrap the cxx 104 malloc-like operators. See N2800 #17.6.4.6 [replacement.functions] */ 105 #define CXX_WRAP_SPEC_LIST " \ 106 --wrap _Znwj \ 107 --wrap _Znaj \ 108 --wrap _ZdlPv \ 109 --wrap _ZdaPv \ 110 --wrap _ZnwjRKSt9nothrow_t \ 111 --wrap _ZnajRKSt9nothrow_t \ 112 --wrap _ZdlPvRKSt9nothrow_t \ 113 --wrap _ZdaPvRKSt9nothrow_t \ 114 " 115 116 #if defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS) 117 118 #if USE_CYGWIN_LIBSTDCXX_WRAPPERS 119 /* Default on, only explict -mno disables. */ 120 #define CXX_WRAP_SPEC_OPT "!mno-use-libstdc-wrappers" 121 #else 122 /* Default off, only explict -m enables. */ 123 #define CXX_WRAP_SPEC_OPT "muse-libstdc-wrappers" 124 #endif 125 126 #define CXX_WRAP_SPEC "%{" CXX_WRAP_SPEC_OPT ":" CXX_WRAP_SPEC_LIST "}" 127 128 #else /* !defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS) */ 129 130 #define CXX_WRAP_SPEC "" 131 132 #endif /* ?defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS) */ 133 134 #define LINK_SPEC "\ 135 %{mwindows:--subsystem windows} \ 136 %{mconsole:--subsystem console} \ 137 " CXX_WRAP_SPEC " \ 138 %{shared: %{mdll: %eshared and mdll are not compatible}} \ 139 %{shared: --shared} %{mdll:--dll} \ 140 %{static:-Bstatic} %{!static:-Bdynamic} \ 141 %{shared|mdll: --enable-auto-image-base -e __cygwin_dll_entry@12} \ 142 --dll-search-prefix=cyg \ 143 %{!shared: %{!mdll: --large-address-aware --tsaware}}" 144 145 /* Binutils does not handle weak symbols from dlls correctly. For now, 146 do not use them unnecessarily in gthr-posix.h. */ 147 #define GTHREAD_USE_WEAK 0 148 149 /* Every program on cygwin links against cygwin1.dll which contains 150 the pthread routines. There is no need to explicitly link them 151 and the -pthread flag is accepted only for compatibility. */ 152 #undef GOMP_SELF_SPECS 153 #define GOMP_SELF_SPECS "" 154 #undef GTM_SELF_SPECS 155 #define GTM_SELF_SPECS "" 156 157 /* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygwin. */ 158 #if DWARF2_UNWIND_INFO 159 #define LIBGCC_EH_EXTN "" 160 #else 161 #define LIBGCC_EH_EXTN "-sjlj" 162 #endif 163 #define LIBGCC_SONAME "cyggcc_s" LIBGCC_EH_EXTN "-1.dll" 164 165 /* Make stack executable to avoid DEP problems with trampolines. */ 166 #define HAVE_ENABLE_EXECUTE_STACK 167 #undef CHECK_EXECUTE_STACK_ENABLED 168 #define CHECK_EXECUTE_STACK_ENABLED flag_setstackexecutable 169