gcc/config/pa/pa64-hpux.h

   1 /* Definitions of target machine for GNU compiler, for HPs running
   2    HPUX using the 64bit runtime model.
   3    Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005, 2007 Free Software Foundation,
   4    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 /* We can debug dynamically linked executables on hpux11; we also
  23    want dereferencing of a NULL pointer to cause a SEGV.  Do not move
  24    the "+Accept TypeMismatch" switch.  We check for it in collect2
  25    to determine which init/fini is needed.  */
  26 #undef LINK_SPEC
  27 #if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GNU_LD)
  28 #define LINK_SPEC \
  29   "%{!shared:%{p:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
  30      %nWarning: consider linking with `-static' as system libraries with\n\
  31      %n  profiling support are only provided in archive format}}}\
  32    %{!shared:%{pg:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
  33      %nWarning: consider linking with `-static' as system libraries with\n\
  34      %n  profiling support are only provided in archive format}}}\
  35    %{mhp-ld:+Accept TypeMismatch -z} -E %{mlinker-opt:-O}\
  36    %{!shared:-u main %{!nostdlib:%{!nodefaultlibs:-u __cxa_finalize}}}\
  37    %{static:-a archive} %{shared:%{mhp-ld:-b}%{!mhp-ld:-shared}}"
  38 #else
  39 #define LINK_SPEC \
  40   "%{!shared:%{p:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
  41      %nWarning: consider linking with `-static' as system libraries with\n\
  42      %n  profiling support are only provided in archive format}}}\
  43    %{!shared:%{pg:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
  44      %nWarning: consider linking with `-static' as system libraries with\n\
  45      %n  profiling support are only provided in archive format}}}\
  46    %{!mgnu-ld:+Accept TypeMismatch -z} -E %{mlinker-opt:-O}\
  47    %{!shared:-u main %{!nostdlib:%{!nodefaultlibs:-u __cxa_finalize}}}\
  48    %{static:-a archive} %{shared:%{mgnu-ld:-shared}%{!mgnu-ld:-b}}"
  49 #endif
  50
  51 /* Profiling support is only provided in libc.a.  However, libprof and
  52    libgprof are only available in shared form on HP-UX 11.00.  We use
  53    the shared form if we are using the GNU linker or an archive form
  54    isn't available.  We also usually need to link with libdld and it's
  55    only available in shared form.  */
  56 #undef LIB_SPEC
  57 #if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GNU_LD)
  58 #define LIB_SPEC \
  59   "%{!shared:\
  60      %{!p:%{!pg:%{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
  61             %{mt|pthread:-lpthread} -lc\
  62             %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
  63                 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
  64      %{p:%{!pg:%{static:%{!mhp-ld:-a shared}%{mhp-ld:-a archive_shared}}\
  65            -lprof %{static:-a archive}\
  66            %{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
  67            %{mt|pthread:-lpthread} -lc\
  68            %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
  69                 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
  70      %{pg:%{static:%{!mhp-ld:-a shared}%{mhp-ld:-a archive_shared}}\
  71        -lgprof %{static:-a archive}\
  72        %{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
  73        %{mt|pthread:-lpthread} -lc\
  74        %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
  75                 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
  76    %{shared:%{mt|pthread:-lpthread}}"
  77 #else
  78 #define LIB_SPEC \
  79   "%{!shared:\
  80      %{!p:%{!pg:%{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
  81             %{mt|pthread:-lpthread} -lc\
  82             %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
  83                 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
  84      %{p:%{!pg:%{static:%{mgnu-ld:-a shared}%{!mgnu-ld:-a archive_shared}}\
  85            -lprof %{static:-a archive}\
  86            %{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
  87            %{mt|pthread:-lpthread} -lc\
  88            %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
  89                 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
  90      %{pg:%{static:%{mgnu-ld:-a shared}%{!mgnu-ld:-a archive_shared}}\
  91        -lgprof %{static:-a archive}\
  92        %{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
  93        %{mt|pthread:-lpthread} -lc\
  94        %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
  95                 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
  96    %{shared:%{mt|pthread:-lpthread}}"
  97 #endif
  98
  99 /* The libgcc_stub.a and milli.a libraries need to come last.  */
 100 #undef LINK_GCC_C_SEQUENCE_SPEC
 101 #define LINK_GCC_C_SEQUENCE_SPEC "\
 102   %G %L %G %{!nostdlib:%{!nodefaultlibs:%{!shared:-lgcc_stub}\
 103   milli.a%s}}"
 104
 105 /* Under hpux11, the normal location of the `ld' and `as' programs is the
 106    /usr/ccs/bin directory.  */
 107
 108 #ifndef CROSS_DIRECTORY_STRUCTURE
 109 #undef MD_EXEC_PREFIX
 110 #define MD_EXEC_PREFIX "/usr/ccs/bin"
 111 #endif
 112
 113 /* Default prefixes.  */
 114
 115 #undef STANDARD_STARTFILE_PREFIX_1
 116 #define STANDARD_STARTFILE_PREFIX_1 "/lib/pa20_64/"
 117
 118 #undef STANDARD_STARTFILE_PREFIX_2
 119 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/pa20_64/"
 120
 121 /* Under hpux11 the normal location of the various pa20_64 *crt*.o files
 122    is the /usr/ccs/lib/pa20_64 directory.  Some files may also be in the
 123    /opt/langtools/lib/pa20_64 directory.  */
 124
 125 #ifndef CROSS_DIRECTORY_STRUCTURE
 126 #undef MD_STARTFILE_PREFIX
 127 #define MD_STARTFILE_PREFIX "/usr/ccs/lib/pa20_64/"
 128 #endif
 129
 130 #ifndef CROSS_DIRECTORY_STRUCTURE
 131 #undef MD_STARTFILE_PREFIX_1
 132 #define MD_STARTFILE_PREFIX_1 "/opt/langtools/lib/pa20_64/"
 133 #endif
 134
 135 /* This macro specifies the biggest alignment supported by the object
 136    file format of this machine.
 137
 138    The .align directive in the HP assembler allows alignments up to
 139    4096 bytes.  However, the maximum alignment of a global common symbol
 140    is 16 bytes using HP ld.  Unfortunately, this macro doesn't provide
 141    a method to check for common symbols.  */
 142 #undef MAX_OFILE_ALIGNMENT
 143 #define MAX_OFILE_ALIGNMENT 32768
 144
 145 /* Due to limitations in the target structure, it isn't currently possible
 146    to dynamically switch between the GNU and HP assemblers.  */
 147 #undef TARGET_GAS
 148
 149 /* Configure selects the standard ELFOS defines for use with GAS.  */
 150 #ifdef USING_ELFOS_H
 151
 152 /* We are using GAS.  */
 153 #define TARGET_GAS 1
 154
 155 #undef TARGET_ASM_FILE_START
 156 #define TARGET_ASM_FILE_START pa_hpux64_gas_file_start
 157
 158 /* This is how we output a null terminated string.  */
 159 #undef STRING_ASM_OP
 160 #define STRING_ASM_OP   "\t.stringz\t"
 161
 162 #define TEXT_SECTION_ASM_OP     "\t.text"
 163 #define DATA_SECTION_ASM_OP     "\t.data"
 164 #define BSS_SECTION_ASM_OP      "\t.section\t.bss"
 165
 166 #define JCR_SECTION_NAME        ".jcr"
 167
 168 #define HP_INIT_ARRAY_SECTION_ASM_OP    "\t.section\t.init"
 169 #define GNU_INIT_ARRAY_SECTION_ASM_OP   "\t.section\t.init_array"
 170 #define HP_FINI_ARRAY_SECTION_ASM_OP    "\t.section\t.fini"
 171 #define GNU_FINI_ARRAY_SECTION_ASM_OP   "\t.section\t.fini_array"
 172
 173 /* We need to override the following two macros defined in elfos.h since
 174    the .comm directive has a different syntax and it can't be used for
 175    local common symbols.  */
 176 #undef ASM_OUTPUT_ALIGNED_COMMON
 177 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)              \
 178   pa_asm_output_aligned_common (FILE, NAME, SIZE, ALIGN)
 179
 180 #undef ASM_OUTPUT_ALIGNED_LOCAL
 181 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)               \
 182   pa_asm_output_aligned_local (FILE, NAME, SIZE, ALIGN)
 183
 184 /* The define in pa.h doesn't work with the alias attribute.  The
 185    default is ok with the following define for GLOBAL_ASM_OP.  */
 186 #undef TARGET_ASM_GLOBALIZE_LABEL
 187
 188 /* This is how we globalize a label.  */
 189 #define GLOBAL_ASM_OP   "\t.globl\t"
 190
 191 /* Hacked version from defaults.h that uses assemble_name_raw
 192    instead of assemble_name.  A symbol in a type directive that
 193    isn't otherwise referenced doesn't cause the symbol to be
 194    placed in the symbol table of the assembled object.  */
 195 #undef ASM_OUTPUT_TYPE_DIRECTIVE
 196 #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE)           \
 197 do {                                                            \
 198   fputs (TYPE_ASM_OP, STREAM);                                  \
 199   assemble_name_raw (STREAM, NAME);                             \
 200   fputs (", ", STREAM);                                         \
 201   fprintf (STREAM, TYPE_OPERAND_FMT, TYPE);                     \
 202   putc ('\n', STREAM);                                          \
 203 } while (0)
 204
 205 /* Hacked version from elfos.h that doesn't output a label.  */
 206 #undef ASM_DECLARE_FUNCTION_NAME
 207 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 208 do {                                                            \
 209   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");           \
 210   ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));                \
 211 } while (0)
 212
 213 /* The type of external references must be set correctly for the
 214    dynamic loader to work correctly.  This is equivalent to the
 215    HP assembler's .IMPORT directive but relates more directly to
 216    ELF object file types.  */
 217 #undef ASM_OUTPUT_EXTERNAL
 218 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)                   \
 219   pa_hpux_asm_output_external ((FILE), (DECL), (NAME))
 220 #define ASM_OUTPUT_EXTERNAL_REAL(FILE, DECL, NAME)              \
 221 do {                                                            \
 222   if (FUNCTION_NAME_P (NAME))                                   \
 223     ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");         \
 224   else                                                          \
 225     ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");           \
 226 } while (0)
 227
 228 /* We need set the type for external libcalls.  Also note that not all
 229    libcall names are passed to targetm.encode_section_info (e.g., __main).
 230    Thus, we also have to do the section encoding if it hasn't been done
 231    already.  */
 232 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 233 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)                  \
 234 do {                                                            \
 235   if (!FUNCTION_NAME_P (XSTR (FUN, 0)))                         \
 236     hppa_encode_label (FUN);                                    \
 237   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function");  \
 238 } while (0)
 239
 240 /* We need to use the HP style for internal labels.  */
 241 #undef ASM_GENERATE_INTERNAL_LABEL
 242 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
 243   sprintf (LABEL, "*%c$%s%04ld", (PREFIX)[0], (PREFIX) + 1, (long)(NUM))
 244
 245 #else /* USING_ELFOS_H */
 246
 247 /* We are not using GAS.  */
 248 #define TARGET_GAS 0
 249
 250 /* HPUX 11 has the "new" HP assembler.  It's still lousy, but it's a whole
 251    lot better than the assembler shipped with older versions of hpux.
 252    However, it doesn't support weak symbols and is a bad fit with ELF.  */
 253 #undef NEW_HP_ASSEMBLER
 254 #define NEW_HP_ASSEMBLER 1
 255
 256 /* It looks like DWARF2 will be the easiest debug format to handle on this
 257    platform.  */
 258 #define DWARF2_DEBUGGING_INFO 1
 259 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 260
 261 /* This target uses the ELF object file format.  */
 262 #define OBJECT_FORMAT_ELF
 263
 264 #undef TARGET_ASM_FILE_START
 265 #define TARGET_ASM_FILE_START pa_hpux64_hpas_file_start
 266
 267 #undef TEXT_SECTION_ASM_OP
 268 #define TEXT_SECTION_ASM_OP             "\t.SUBSPA $CODE$\n"
 269 #undef READONLY_DATA_SECTION_ASM_OP
 270 #define READONLY_DATA_SECTION_ASM_OP    "\t.SUBSPA $LIT$\n"
 271 #undef DATA_SECTION_ASM_OP
 272 #define DATA_SECTION_ASM_OP             "\t.SUBSPA $DATA$\n"
 273 #undef BSS_SECTION_ASM_OP
 274 #define BSS_SECTION_ASM_OP              "\t.SUBSPA $BSS$\n"
 275
 276 /* We provide explicit defines for CTORS_SECTION_ASM_OP and
 277    DTORS_SECTION_ASM_OP since we don't yet have support for
 278    named sections with the HP assembler.  */
 279 #undef CTORS_SECTION_ASM_OP
 280 #define CTORS_SECTION_ASM_OP "\t.SUBSPA \\.ctors,QUAD=1,ALIGN=8,ACCESS=31"
 281 #undef DTORS_SECTION_ASM_OP
 282 #define DTORS_SECTION_ASM_OP "\t.SUBSPA \\.dtors,QUAD=1,ALIGN=8,ACCESS=31"
 283
 284 #define HP_INIT_ARRAY_SECTION_ASM_OP \
 285   "\t.SUBSPA \\.init,QUAD=1,ALIGN=8,ACCESS=31"
 286 #define GNU_INIT_ARRAY_SECTION_ASM_OP \
 287   "\t.SUBSPA \\.init_array,QUAD=1,ALIGN=8,ACCESS=31"
 288 #define HP_FINI_ARRAY_SECTION_ASM_OP \
 289   "\t.SUBSPA \\.fini,QUAD=1,ALIGN=8,ACCESS=31"
 290 #define GNU_FINI_ARRAY_SECTION_ASM_OP \
 291   "\t.SUBSPA \\.fini_array,QUAD=1,ALIGN=8,ACCESS=31"
 292
 293 #endif /* USING_ELFOS_H */
 294
 295 /* The following defines, used to run constructors and destructors with
 296    the SOM linker under HP-UX 11, are not needed.  */
 297 #undef HAS_INIT_SECTION
 298 #undef LD_INIT_SWITCH
 299 #undef LD_FINI_SWITCH
 300
 301 /* The following STARTFILE_SPEC and ENDFILE_SPEC defines provide the
 302    magic needed to run initializers and finalizers.  */
 303 #undef STARTFILE_SPEC
 304 #if TARGET_HPUX_11_11
 305 #define STARTFILE_SPEC \
 306   "%{!shared: %{!symbolic: crt0%O%s} %{munix=95:unix95.o%s} \
 307      %{!munix=93:%{!munix=95:unix98%O%s}}} %{static:crtbeginT%O%s} \
 308    %{!static:%{!shared:crtbegin%O%s} %{shared:crtbeginS%O%s}}"
 309 #else
 310 #define STARTFILE_SPEC \
 311   "%{!shared: %{!symbolic: crt0%O%s} %{munix=95:unix95%O%s}} \
 312    %{static:crtbeginT%O%s} %{!static:%{!shared:crtbegin%O%s} \
 313    %{shared:crtbeginS%O%s}}"
 314 #endif
 315 #undef ENDFILE_SPEC
 316 #define ENDFILE_SPEC "%{!shared:crtend%O%s} %{shared:crtendS%O%s}"
 317
 318 /* Since HP uses the .init and .fini sections for array initializers
 319    and finalizers, we need different defines for INIT_SECTION_ASM_OP
 320    and FINI_SECTION_ASM_OP.  With the implementation adopted below,
 321    the sections are not actually used.  However, we still must provide
 322    defines to select the proper code path.  */
 323 #undef INIT_SECTION_ASM_OP
 324 #define INIT_SECTION_ASM_OP
 325 #undef FINI_SECTION_ASM_OP
 326 #define FINI_SECTION_ASM_OP
 327
 328 /* We are using array initializers and don't want calls in the INIT
 329    and FINI sections.  */
 330 #undef CRT_CALL_STATIC_FUNCTION
 331 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC)
 332
 333 /* The init_priority attribute is not supported with HP ld.  This could be
 334    supported if collect2 was used with LD_INIT_SWITCH.  Unfortunately, this
 335    approach doesn't work with GNU ld since HP-UX doesn't support DT_INIT,
 336    and therefore the -init and -fini GNU ld switches.  */
 337 #undef SUPPORTS_INIT_PRIORITY
 338 #define SUPPORTS_INIT_PRIORITY (TARGET_GNU_LD ? 1 : 0)
 339
 340 /* We use DTOR_LIST_BEGIN to carry a bunch of hacks to allow us to use
 341    the init and fini array sections with both the HP and GNU linkers.
 342    The linkers setup the required dynamic entries in the dynamic segment
 343    and the dynamic linker does the calls.  This approach avoids using
 344    collect2.
 345
 346    The first hack is to implement __do_global_ctors_aux in crtbegin as
 347    it needs to be the first entry in the init array so that it is called
 348    last.  HP got the order of the init array backwards.  The DT_INIT_ARRAY
 349    is supposed to be executed in the same order as the addresses appear in
 350    the array.  DT_FINI_ARRAY is supposed to be executed in the opposite
 351    order.
 352
 353    The second hack is a set of plabels to implement the effect of
 354    CRT_CALL_STATIC_FUNCTION.  HP-UX 11 only supports DI_INIT_ARRAY and
 355    DT_FINI_ARRAY and they put the arrays in .init and .fini, rather than
 356    in .init_array and .fini_array.  The standard defines for .init and
 357    .fini have the execute flag set.  So, the assembler has to be hacked
 358    to munge the standard flags for these sections to make them agree
 359    with what the HP linker expects.  With the GNU linker, we need to
 360    used the .init_array and .fini_array sections.  So, we set up for
 361    both just in case.  Once we have built the table, the linker does
 362    the rest of the work.
 363
 364    The order is significant.  Placing __do_global_ctors_aux first in
 365    the list, results in it being called last.  User specified initializers,
 366    either using the linker +init command or a plabel, run before the
 367    initializers specified here.  */
 368
 369 /* We need to add frame_dummy to the initializer list if EH_FRAME_SECTION_NAME
 370    or JCR_SECTION_NAME is defined.  */
 371 #if defined(EH_FRAME_SECTION_NAME) || defined(JCR_SECTION_NAME)
 372 #define PA_INIT_FRAME_DUMMY_ASM_OP ".dword P%frame_dummy"
 373 #else
 374 #define PA_INIT_FRAME_DUMMY_ASM_OP ""
 375 #endif
 376
 377 /* The following hack sets up the .init, .init_array, .fini and
 378    .fini_array sections.  */
 379 #define PA_CRTBEGIN_HACK \
 380 asm (TEXT_SECTION_ASM_OP);                                              \
 381 static void __attribute__((used))                                       \
 382 __do_global_ctors_aux (void)                                            \
 383 {                                                                       \
 384   func_ptr *p = __CTOR_LIST__;                                          \
 385   while (*(p + 1))                                                      \
 386     p++;                                                                \
 387   for (; *p != (func_ptr) -1; p--)                                      \
 388     (*p) ();                                                            \
 389 }                                                                       \
 390                                                                         \
 391 asm (HP_INIT_ARRAY_SECTION_ASM_OP);                                     \
 392 asm (".align 8");                                                       \
 393 asm (".dword P%__do_global_ctors_aux");                                 \
 394 asm (PA_INIT_FRAME_DUMMY_ASM_OP);                                       \
 395 asm (GNU_INIT_ARRAY_SECTION_ASM_OP);                                    \
 396 asm (".align 8");                                                       \
 397 asm (".dword P%__do_global_ctors_aux");                                 \
 398 asm (PA_INIT_FRAME_DUMMY_ASM_OP);                                       \
 399 asm (HP_FINI_ARRAY_SECTION_ASM_OP);                                     \
 400 asm (".align 8");                                                       \
 401 asm (".dword P%__do_global_dtors_aux");                                 \
 402 asm (GNU_FINI_ARRAY_SECTION_ASM_OP);                                    \
 403 asm (".align 8");                                                       \
 404 asm (".dword P%__do_global_dtors_aux")
 405
 406 /* The following two variants of DTOR_LIST_BEGIN are identical to those
 407    in crtstuff.c except for the addition of the above crtbegin hack.  */
 408 #ifdef DTORS_SECTION_ASM_OP
 409 #define DTOR_LIST_BEGIN \
 410 asm (DTORS_SECTION_ASM_OP);                                             \
 411 STATIC func_ptr __DTOR_LIST__[1]                                        \
 412   __attribute__ ((aligned(sizeof(func_ptr))))                           \
 413   = { (func_ptr) (-1) };                                                \
 414 PA_CRTBEGIN_HACK
 415 #else
 416 #define DTOR_LIST_BEGIN \
 417 STATIC func_ptr __DTOR_LIST__[1]                                        \
 418   __attribute__ ((section(".dtors"), aligned(sizeof(func_ptr))))        \
 419   = { (func_ptr) (-1) };                                                \
 420 PA_CRTBEGIN_HACK
 421 #endif
 422
 423 /* If using HP ld do not call pxdb.  Use size as a program that does nothing
 424    and returns 0.  /bin/true cannot be used because it is a script without
 425    an interpreter.  */
 426 #define INIT_ENVIRONMENT "LD_PXDB=/usr/ccs/bin/size"
 427
 428 /* The HPUX dynamic linker objects to undefined weak symbols, so do
 429    not use them in gthr-posix.h.  */
 430 #define GTHREAD_USE_WEAK 0
 431
 432 /* We don't want undefined weak references to __register_frame_info,
 433    __deregister_frame_info, _Jv_RegisterClasses and __cxa_finalize
 434    introduced by crtbegin.o.  The GNU linker only resolves weak
 435    references if they appear in a shared library.  Thus, it would be
 436    impossible to create a static executable if the symbols were weak.
 437    So, the best solution seems to be to make the symbols strong and
 438    provide an archive library of empty stub functions.  */
 439 #define TARGET_ATTRIBUTE_WEAK