gcc/config/sol2.h

   1 /* Operating system specific defines to be used when targeting GCC for any
   2    Solaris 2 system.
   3    Copyright (C) 2002-2018 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 /* We are compiling for Solaris 2 now.  */
  22 #define TARGET_SOLARIS 1
  23
  24 /* wchar_t is called differently in <wchar.h> for 32 and 64-bit
  25    compilations.  This is called for by SCD 2.4.1, p. 6-83, Figure 6-65
  26    (32-bit) and p. 6P-10, Figure 6.38 (64-bit).  */
  27
  28 #undef WCHAR_TYPE
  29 #define WCHAR_TYPE (TARGET_64BIT ? "int" : "long int")
  30
  31 #undef WCHAR_TYPE_SIZE
  32 #define WCHAR_TYPE_SIZE 32
  33
  34 /* Same for wint_t.  See SCD 2.4.1, p. 6-83, Figure 6-66 (32-bit).  There's
  35    no corresponding 64-bit definition, but this is what Solaris 8
  36    <iso/wchar_iso.h> uses.  */
  37
  38 #undef WINT_TYPE
  39 #define WINT_TYPE (TARGET_64BIT ? "int" : "long int")
  40
  41 #undef WINT_TYPE_SIZE
  42 #define WINT_TYPE_SIZE 32
  43
  44 #define SIG_ATOMIC_TYPE "int"
  45
  46 /* ??? This definition of int8_t follows the system header but does
  47    not conform to C99.  Likewise int_fast8_t, int_least8_t.  */
  48 #define INT8_TYPE "char"
  49 #define INT16_TYPE "short int"
  50 #define INT32_TYPE "int"
  51 #define INT64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
  52 #define UINT8_TYPE "unsigned char"
  53 #define UINT16_TYPE "short unsigned int"
  54 #define UINT32_TYPE "unsigned int"
  55 #define UINT64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
  56
  57 #define INT_LEAST8_TYPE "char"
  58 #define INT_LEAST16_TYPE "short int"
  59 #define INT_LEAST32_TYPE "int"
  60 #define INT_LEAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
  61 #define UINT_LEAST8_TYPE "unsigned char"
  62 #define UINT_LEAST16_TYPE "short unsigned int"
  63 #define UINT_LEAST32_TYPE "unsigned int"
  64 #define UINT_LEAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
  65
  66 #define INT_FAST8_TYPE "char"
  67 #define INT_FAST16_TYPE "int"
  68 #define INT_FAST32_TYPE "int"
  69 #define INT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")
  70 #define UINT_FAST8_TYPE "unsigned char"
  71 #define UINT_FAST16_TYPE "unsigned int"
  72 #define UINT_FAST32_TYPE "unsigned int"
  73 #define UINT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")
  74
  75 #define INTPTR_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")
  76 #define UINTPTR_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "unsigned int")
  77
  78 #undef CPP_SUBTARGET_SPEC
  79 #define CPP_SUBTARGET_SPEC "\
  80 %{pthreads|pthread:-D_REENTRANT -D_PTHREADS}"
  81
  82 /* Names to predefine in the preprocessor for this target machine.  */
  83 #define TARGET_SUB_OS_CPP_BUILTINS()
  84 #define TARGET_OS_CPP_BUILTINS()                        \
  85   do {                                                  \
  86     builtin_define_std ("unix");                        \
  87     builtin_define_std ("sun");                         \
  88     builtin_define ("__svr4__");                        \
  89     builtin_define ("__SVR4");                          \
  90     builtin_assert ("system=unix");                     \
  91     builtin_assert ("system=svr4");                     \
  92     /* For C++ we need to add some additional macro     \
  93        definitions required by the C++ standard         \
  94        library.  */                                     \
  95     if (c_dialect_cxx ())                               \
  96       {                                                 \
  97         switch (cxx_dialect)                            \
  98           {                                             \
  99           case cxx98:                                   \
 100           case cxx11:                                   \
 101           case cxx14:                                   \
 102             /* C++11 and C++14 are based on C99.        \
 103                libstdc++ makes use of C99 features      \
 104                even for C++98.  */                      \
 105             builtin_define ("__STDC_VERSION__=199901L");\
 106             break;                                      \
 107                                                         \
 108           default:                                      \
 109             /* C++17 is based on C11.  */               \
 110             builtin_define ("__STDC_VERSION__=201112L");\
 111             break;                                      \
 112           }                                             \
 113         builtin_define ("_XOPEN_SOURCE=600");           \
 114         builtin_define ("_LARGEFILE_SOURCE=1");         \
 115         builtin_define ("_LARGEFILE64_SOURCE=1");       \
 116         builtin_define ("__EXTENSIONS__");              \
 117       }                                                 \
 118     TARGET_SUB_OS_CPP_BUILTINS();                       \
 119   } while (0)
 120
 121 #define SUBTARGET_OVERRIDE_OPTIONS                      \
 122   do {                                                  \
 123     solaris_override_options ();                        \
 124   } while (0)
 125
 126 #if DEFAULT_ARCH32_P
 127 #define MULTILIB_DEFAULTS { "m32" }
 128 #else
 129 #define MULTILIB_DEFAULTS { "m64" }
 130 #endif
 131
 132 #if DEFAULT_ARCH32_P
 133 #define DEF_ARCH32_SPEC(__str) "%{!m64:" __str "}"
 134 #define DEF_ARCH64_SPEC(__str) "%{m64:" __str "}"
 135 #else
 136 #define DEF_ARCH32_SPEC(__str) "%{m32:" __str "}"
 137 #define DEF_ARCH64_SPEC(__str) "%{!m32:" __str "}"
 138 #endif
 139
 140 /* It's safe to pass -s always, even if -g is not used.  Those options are
 141    handled by both Sun as and GNU as.  */
 142 #define ASM_SPEC_BASE \
 143 "%{v:-V} %{Qy:} %{!Qn:-Qy} %{Ym,*} -s %(asm_cpu)"
 144
 145 #define ASM_PIC_SPEC " %{" FPIE_OR_FPIC_SPEC ":-K PIC}"
 146
 147 #undef ASM_CPU_DEFAULT_SPEC
 148 #define ASM_CPU_DEFAULT_SPEC \
 149 (DEFAULT_ARCH32_P ? "\
 150 %{m64:" ASM_CPU64_DEFAULT_SPEC "} \
 151 %{!m64:" ASM_CPU32_DEFAULT_SPEC "} \
 152 " : "\
 153 %{m32:" ASM_CPU32_DEFAULT_SPEC "} \
 154 %{!m32:" ASM_CPU64_DEFAULT_SPEC "} \
 155 ")
 156
 157 #undef LIB_SPEC
 158 #define LIB_SPEC \
 159   "%{!symbolic:\
 160      %{pthreads|pthread:-lpthread} \
 161      %{p|pg:-ldl} -lc}"
 162
 163 #ifndef CROSS_DIRECTORY_STRUCTURE
 164 #undef MD_EXEC_PREFIX
 165 #define MD_EXEC_PREFIX "/usr/ccs/bin/"
 166 #endif
 167
 168 /* Enable constructor priorities if the configured linker supports it.  */
 169 #undef SUPPORTS_INIT_PRIORITY
 170 #define SUPPORTS_INIT_PRIORITY HAVE_INITFINI_ARRAY_SUPPORT
 171
 172 /* Solaris libc and libm implement multiple behaviours for various
 173    interfaces that have changed over the years in different versions of the
 174    C standard.  The behaviour is controlled by linking corresponding
 175    values-*.o objects.  Each of these objects contain alternate definitions
 176    of one or more variables that the libraries use to select which
 177    conflicting behaviour they should exhibit.  There are two sets of these
 178    objects, values-X*.o and values-xpg*.o.
 179
 180    The values-X[ac].o objects set the variable _lib_version.  The Studio C
 181    compilers use values-Xc.o with either -Xc or (since Studio 12.6)
 182    -pedantic to select strictly conformant ISO C behaviour, otherwise
 183    values-Xa.o.  Since -pedantic is a diagnostic option only in GCC, we
 184    need to specifiy the -std=c* options and -std=iso9899:199409.  We
 185    traditionally include -ansi, which affects C and C++, and also -std=c++*
 186    for consistency.
 187
 188    The values-xpg[46].o objects define either or both __xpg[46] variables,
 189    selecting XPG4 mode (__xpg4) and conforming C99/SUSv3 behavior (__xpg6).
 190
 191    Since GCC 5, gcc defaults to -std=gnu11 or higher, so we link
 192    values-xpg6.o to get C99 semantics.  Besides, most of the runtime
 193    libraries always require C99 semantics.
 194
 195    Since only one instance of _lib_version and __xpg[46] takes effekt (the
 196    first in ld.so.1's search path), we only link the values-*.o files into
 197    executable programs.  */
 198 #undef STARTFILE_ARCH_SPEC
 199 #define STARTFILE_ARCH_SPEC \
 200   "%{!shared:%{!symbolic: \
 201      %{ansi|std=c*|std=iso9899\\:199409:values-Xc.o%s; :values-Xa.o%s} \
 202      %{std=c90|std=gnu90:values-xpg4.o%s; :values-xpg6.o%s}}}"
 203
 204 #if defined(HAVE_LD_PIE) && defined(HAVE_SOLARIS_CRTS)
 205 #define STARTFILE_CRTBEGIN_SPEC "%{static:crtbegin.o%s; \
 206                                    shared|" PIE_SPEC ":crtbeginS.o%s; \
 207                                    :crtbegin.o%s}"
 208 #else
 209 #define STARTFILE_CRTBEGIN_SPEC "crtbegin.o%s"
 210 #endif
 211
 212 #if ENABLE_VTABLE_VERIFY
 213 #if SUPPORTS_INIT_PRIORITY
 214 #define STARTFILE_VTV_SPEC \
 215   "%{fvtable-verify=none:%s; \
 216      fvtable-verify=preinit:vtv_start_preinit.o%s; \
 217      fvtable-verify=std:vtv_start.o%s}"
 218 #define ENDFILE_VTV_SPEC \
 219   "%{fvtable-verify=none:%s; \
 220      fvtable-verify=preinit:vtv_end_preinit.o%s; \
 221      fvtable-verify=std:vtv_end.o%s}"
 222 #else /* !SUPPORTS_INIT_PRIORITY */
 223 #define STARTFILE_VTV_SPEC \
 224   "%{fvtable-verify=*: \
 225      %e-fvtable-verify=%* is not supported in this configuration}"
 226 #define ENDFILE_VTV_SPEC ""
 227 #endif /* !SUPPORTS_INIT_PRIORITY */
 228 #else /* !ENABLE_VTABLE_VERIFY */
 229 #define STARTFILE_VTV_SPEC ""
 230 #define ENDFILE_VTV_SPEC ""
 231 #endif /* !ENABLE_VTABLE_VERIFY */
 232
 233 /* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us.  */
 234 #undef STARTFILE_SPEC
 235 #ifdef HAVE_SOLARIS_CRTS
 236 /* Since Solaris 11.4, the OS delivers crt1.o, crti.o, and crtn.o, with a hook
 237    for compiler-dependent stuff like profile handling.  */
 238 #define STARTFILE_SPEC "%{!shared:%{!symbolic: \
 239                           crt1.o%s \
 240                           %{p:%e-p is not supported; \
 241                             pg:crtpg.o%s gmon.o%s; \
 242                               :crtp.o%s}}} \
 243                         crti.o%s %(startfile_arch) %(startfile_crtbegin) \
 244                         %(startfile_vtv)"
 245 #else
 246 #define STARTFILE_SPEC "%{!shared:%{!symbolic: \
 247                           %{p:mcrt1.o%s; \
 248                             pg:gcrt1.o%s gmon.o%s; \
 249                               :crt1.o%s}}} \
 250                         crti.o%s %(startfile_arch) %(startfile_crtbegin) \
 251                         %(startfile_vtv)"
 252 #endif
 253
 254 #if defined(HAVE_LD_PIE) && defined(HAVE_SOLARIS_CRTS)
 255 #define ENDFILE_CRTEND_SPEC "%{static:crtend.o%s; \
 256                                shared|" PIE_SPEC ":crtendS.o%s; \
 257                                :crtend.o%s}"
 258 #else
 259 #define ENDFILE_CRTEND_SPEC "crtend.o%s"
 260 #endif
 261
 262 #undef  ENDFILE_SPEC
 263 #define ENDFILE_SPEC \
 264   "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
 265    %(endfile_arch) %(endfile_vtv) %(endfile_crtend) crtn.o%s"
 266
 267 #undef LINK_ARCH32_SPEC_BASE
 268 #define LINK_ARCH32_SPEC_BASE \
 269   "%{G:-G} \
 270    %{YP,*} \
 271    %{R*} \
 272    %{!YP,*:%{p|pg:-Y P,%R/usr/lib/libp%R/lib:%R/usr/lib} \
 273            %{!p:%{!pg:-Y P,%R/lib:%R/usr/lib}}}"
 274
 275 #undef LINK_ARCH32_SPEC
 276 #define LINK_ARCH32_SPEC LINK_ARCH32_SPEC_BASE
 277
 278 /* This should be the same as LINK_ARCH32_SPEC_BASE, except with
 279    ARCH64_SUBDIR appended to the paths.  */
 280 #undef LINK_ARCH64_SPEC_BASE
 281 #define LINK_ARCH64_SPEC_BASE \
 282   "%{G:-G} \
 283    %{YP,*} \
 284    %{R*} \
 285    %{!YP,*:%{p|pg:-Y P,%R/usr/lib/libp/" ARCH64_SUBDIR ":%R/lib/" ARCH64_SUBDIR ":%R/usr/lib/" ARCH64_SUBDIR "} \
 286            %{!p:%{!pg:-Y P,%R/lib/" ARCH64_SUBDIR ":%R/usr/lib/" ARCH64_SUBDIR "}}}"
 287
 288 #undef LINK_ARCH64_SPEC
 289 #ifndef USE_GLD
 290 /* FIXME: Used to be SPARC-only.  Not SPARC-specfic but for the model name!  */
 291 #define LINK_ARCH64_SPEC \
 292   "%{mcmodel=medlow:-M /usr/lib/ld/" ARCH64_SUBDIR "/map.below4G} " \
 293   LINK_ARCH64_SPEC_BASE
 294 #else
 295 #define LINK_ARCH64_SPEC LINK_ARCH64_SPEC_BASE
 296 #endif
 297
 298 #ifdef USE_GLD
 299 #if DEFAULT_ARCH32_P
 300 #define ARCH_DEFAULT_EMULATION ARCH32_EMULATION
 301 #else
 302 #define ARCH_DEFAULT_EMULATION ARCH64_EMULATION
 303 #endif
 304 #define TARGET_LD_EMULATION "%{m32:-m " ARCH32_EMULATION "}" \
 305                             "%{m64:-m " ARCH64_EMULATION "}" \
 306                             "%{!m32:%{!m64:-m " ARCH_DEFAULT_EMULATION "}} "
 307 #else
 308 #define TARGET_LD_EMULATION ""
 309 #endif
 310
 311 #undef LINK_ARCH_SPEC
 312 #if DISABLE_MULTILIB
 313 #if DEFAULT_ARCH32_P
 314 #define LINK_ARCH_SPEC TARGET_LD_EMULATION " \
 315 %{m32:%(link_arch32)} \
 316 %{m64:%edoes not support multilib} \
 317 %{!m32:%{!m64:%(link_arch_default)}} \
 318 "
 319 #else
 320 #define LINK_ARCH_SPEC TARGET_LD_EMULATION " \
 321 %{m32:%edoes not support multilib} \
 322 %{m64:%(link_arch64)} \
 323 %{!m32:%{!m64:%(link_arch_default)}} \
 324 "
 325 #endif
 326 #else
 327 #define LINK_ARCH_SPEC TARGET_LD_EMULATION " \
 328 %{m32:%(link_arch32)} \
 329 %{m64:%(link_arch64)} \
 330 %{!m32:%{!m64:%(link_arch_default)}}"
 331 #endif
 332
 333 #define LINK_ARCH_DEFAULT_SPEC \
 334 (DEFAULT_ARCH32_P ? LINK_ARCH32_SPEC : LINK_ARCH64_SPEC)
 335
 336 #undef SUBTARGET_EXTRA_SPECS
 337 #define SUBTARGET_EXTRA_SPECS \
 338   { "startfile_arch",           STARTFILE_ARCH_SPEC },          \
 339   { "startfile_crtbegin",       STARTFILE_CRTBEGIN_SPEC },      \
 340   { "startfile_vtv",            STARTFILE_VTV_SPEC },           \
 341   { "link_arch32",              LINK_ARCH32_SPEC },             \
 342   { "link_arch64",              LINK_ARCH64_SPEC },             \
 343   { "link_arch_default",        LINK_ARCH_DEFAULT_SPEC },       \
 344   { "link_arch",                LINK_ARCH_SPEC },               \
 345   { "endfile_arch",             ENDFILE_ARCH_SPEC },            \
 346   { "endfile_crtend",           ENDFILE_CRTEND_SPEC },          \
 347   { "endfile_vtv",              ENDFILE_VTV_SPEC },             \
 348   SUBTARGET_CPU_EXTRA_SPECS
 349
 350 /* C++11 programs need -lrt for nanosleep.  */
 351 #define TIME_LIBRARY "rt"
 352
 353 #ifndef USE_GLD
 354 /* With Sun ld, -rdynamic is a no-op.  */
 355 #define RDYNAMIC_SPEC ""
 356 #else
 357 /* GNU ld needs --export-dynamic to implement -rdynamic.  */
 358 #define RDYNAMIC_SPEC "--export-dynamic"
 359 #endif
 360
 361 #ifndef USE_GLD
 362 /* Prefer native form with Solaris ld.  */
 363 #define SYSROOT_SPEC "-z sysroot=%R"
 364 #endif
 365
 366 #ifndef USE_GLD
 367 /* With Sun ld, use mapfile to enforce direct binding to libgcc_s unwinder.  */
 368 #define LINK_LIBGCC_MAPFILE_SPEC \
 369   "%{shared|shared-libgcc:-M %slibgcc-unwind.map}"
 370 #else
 371 /* GNU ld doesn't support direct binding.  */
 372 #define LINK_LIBGCC_MAPFILE_SPEC ""
 373 #endif
 374
 375 /* Clear hardware capabilities, either explicitly or with OpenMP:
 376    #pragma openmp declare simd creates clones for SSE2, AVX, and AVX2.  */
 377 #ifdef HAVE_LD_CLEARCAP
 378 #define LINK_CLEARCAP_SPEC " %{mclear-hwcap|fopenmp*:-M %sclearcap.map}"
 379 #else
 380 #define LINK_CLEARCAP_SPEC ""
 381 #endif
 382
 383 #undef  LINK_SPEC
 384 #define LINK_SPEC \
 385   "%{h*} %{v:-V} \
 386    %{!shared:%{!static:%{rdynamic: " RDYNAMIC_SPEC "}}} \
 387    %{static:-dn -Bstatic} \
 388    %{shared:-G -dy %{!mimpure-text:-z text}} " \
 389    LINK_LIBGCC_MAPFILE_SPEC LINK_CLEARCAP_SPEC " \
 390    %{symbolic:-Bsymbolic -G -dy -z text} \
 391    %(link_arch) \
 392    %{Qy:} %{!Qn:-Qy}"
 393
 394 /* Use --as-needed/-z ignore -lgcc_s for eh support.  */
 395 #ifdef HAVE_LD_AS_NEEDED
 396 #define USE_LD_AS_NEEDED 1
 397 #endif
 398
 399 #ifdef USE_GLD
 400 /* Solaris 11 build 135+ implements dl_iterate_phdr.  GNU ld needs
 401    --eh-frame-hdr to create the required .eh_frame_hdr sections.  */
 402 #if defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
 403 #define LINK_EH_SPEC "%{!static|static-pie:--eh-frame-hdr} "
 404 #endif /* HAVE_LD_EH_FRAME && TARGET_DL_ITERATE_PHDR */
 405 #endif
 406
 407 #if defined(HAVE_LD_PIE) && defined(HAVE_SOLARIS_CRTS)
 408 #ifdef USE_GLD
 409 /* Assert -z text by default to match Solaris ld.  */
 410 #define LD_PIE_SPEC "-pie %{!mimpure-text:-z text}"
 411 #else
 412 /* Solaris ld needs -z type=pie instead of -pie.  */
 413 #define LD_PIE_SPEC "-z type=pie %{mimpure-text:-z textoff}"
 414 #endif
 415 #else
 416 /* Error out if some part of PIE support is missing.  */
 417 #define LINK_PIE_SPEC \
 418   "%{no-pie:} %{pie:%e-pie is not supported in this configuration} "
 419 #endif
 420
 421 /* collect2.c can only parse GNU nm -n output.  Solaris nm needs -png to
 422    produce the same format.  */
 423 #define NM_FLAGS "-png"
 424 \f
 425 /* The system headers under Solaris 2 are C++-aware since 2.0.  */
 426 #define NO_IMPLICIT_EXTERN_C
 427
 428 #define STDC_0_IN_SYSTEM_HEADERS 1
 429
 430 /* Support Solaris-specific format checking for cmn_err.  */
 431 #define TARGET_N_FORMAT_TYPES 1
 432 #define TARGET_FORMAT_TYPES solaris_format_types
 433
 434 /* #pragma init and #pragma fini are implemented on top of init and
 435    fini attributes.  */
 436 #define SOLARIS_ATTRIBUTE_TABLE                                         \
 437   { "init",      0, 0, true,  false,  false, false, NULL, NULL },       \
 438   { "fini",      0, 0, true,  false,  false, false, NULL, NULL }
 439
 440 /* Solaris-specific #pragmas are implemented on top of attributes.  Hook in
 441    the bits from config/sol2.c.  */
 442 #define SUBTARGET_INSERT_ATTRIBUTES solaris_insert_attributes
 443 #define SUBTARGET_ATTRIBUTE_TABLE SOLARIS_ATTRIBUTE_TABLE
 444
 445 /* Allow macro expansion in #pragma pack.  */
 446 #define HANDLE_PRAGMA_PACK_WITH_EXPANSION
 447
 448 #define TARGET_CXX_DECL_MANGLING_CONTEXT solaris_cxx_decl_mangling_context
 449
 450 /* Solaris/x86 as and gas support unquoted section names.  */
 451 #ifndef SECTION_NAME_FORMAT
 452 #define SECTION_NAME_FORMAT     "%s"
 453 #endif
 454
 455 /* This is how to declare the size of a function.  For Solaris, we output
 456    any .init or .fini entries here.  */
 457 #undef ASM_DECLARE_FUNCTION_SIZE
 458 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)            \
 459   do                                                            \
 460     {                                                           \
 461       if (!flag_inhibit_size_directive)                         \
 462         ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                 \
 463       solaris_output_init_fini (FILE, DECL);                    \
 464     }                                                           \
 465   while (0)
 466
 467 #ifndef USE_GAS
 468 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
 469 #define TARGET_ASM_ASSEMBLE_VISIBILITY solaris_assemble_visibility
 470
 471 #define AS_NEEDS_DASH_FOR_PIPED_INPUT
 472
 473 /* The Solaris assembler cannot grok .stabd directives.  */
 474 #undef NO_DBX_BNSYM_ENSYM
 475 #define NO_DBX_BNSYM_ENSYM 1
 476 #endif
 477
 478 /* Solaris has an implementation of __enable_execute_stack.  */
 479 #define HAVE_ENABLE_EXECUTE_STACK
 480
 481 /* Static stack checking is supported by means of probes.  */
 482 #define STACK_CHECK_STATIC_BUILTIN 1
 483
 484 #define TARGET_POSIX_IO
 485
 486 /* Solaris 10 has the float and long double forms of math functions.
 487    We redefine this hook so the version from elfos.h header won't be used.  */
 488 #undef TARGET_LIBC_HAS_FUNCTION
 489 #define TARGET_LIBC_HAS_FUNCTION default_libc_has_function
 490
 491 extern GTY(()) tree solaris_pending_aligns;
 492 extern GTY(()) tree solaris_pending_inits;
 493 extern GTY(()) tree solaris_pending_finis;