libjava/configure.host

   1 # configure.host
   2
   3 # This shell script handles all host based configuration for libgcj.
   4 # It sets various shell variables based on the the host and the
   5 # configuration options.  You can modify this shell script without
   6 # needing to rerun autoconf.
   7
   8 # This shell script should be invoked as
   9 #   . configure.host
  10 # If it encounters an error, it will exit with a message.
  11
  12 # It uses the following shell variables:
  13 #   host                The configuration host
  14 #   host_cpu            The configuration host CPU
  15 #   target_optspace     --enable-target-optspace ("yes", "no", "")
  16
  17 # It sets the following shell variables:
  18 #   libgcj_cflags       Special CFLAGS to use when building
  19 #   libgcj_cxxflags     Special CXXFLAGS to use when building
  20 #   libgcj_javaflags    Special JAVAFLAGS to use when building
  21 #   libgcj_sublib_ltflags  Special Libtool flags to use when building sublibs
  22 #   libgcj_sublib_core_extra_deps  Extra dependencies to add to core sublib
  23 #   libgcj_interpreter  If the bytecode interpreter supports this platform.
  24 #   enable_java_net_default  If java.net native code should be enabled by
  25 #                            default.
  26 #   enable_hash_synchronization_default  If hash synchronization should be
  27 #                                        enabled by default.
  28 #   enable_libgcj_sublibs_default  Whether to build libgcj as a bunch of
  29 #                                  separate shared libraries or in one
  30 #                                  monolithic one.
  31 #   sysdeps_dir         Directory containing system-dependent headers
  32 #   slow_pthread_self   The synchronization code should try to avoid
  33 #                       pthread_self calls by caching thread IDs in a hashtable
  34 #   can_unwind_signal   Set to "yes" if the EH unwinder supports throwing
  35 #                       from a signal handler.
  36 #   fallback_backtrace_h  Header to use for fallback backtrace implementation
  37 #                         (only for targets that don't support DWARF2 unwind)
  38 #   descriptor_h        Header to use for looking past function descriptors
  39 #   use_libgcj_bc       Whether to build a "libgcj-bc" library for BC-ABI
  40 #                       binaries to link against.
  41
  42 libgcj_flags=
  43 libgcj_cflags=
  44 libgcj_cxxflags=
  45 libgcj_javaflags=
  46 libgcj_sublib_ltflags=
  47 libgcj_sublib_core_extra_deps=
  48 libgcj_interpreter=
  49 enable_java_net_default=yes
  50 enable_hash_synchronization_default=no
  51 enable_libgcj_sublibs_default=no
  52 sysdeps_dir=generic
  53 slow_pthread_self=
  54 can_unwind_signal=no
  55 fallback_backtrace_h=sysdep/generic/backtrace.h
  56
  57 case "${target_optspace}:${host}" in
  58   yes:*)
  59     libgcj_flags="${libgcj_flags} -Os"
  60     ;;
  61   :m32r-* | :d10v-* | :d30v-*)
  62     libgcj_flags="${libgcj_flags} -Os"
  63     ;;
  64   no:* | :*)
  65     # Nothing.
  66     ;;
  67 esac
  68
  69 AM_RUNTESTFLAGS=
  70
  71 # Set any host dependent compiler flags.
  72 # THIS TABLE IS SORTED.  KEEP IT THAT WAY.
  73
  74 echo "$target"
  75
  76 DIVIDESPEC=-fuse-divide-subroutine
  77 EXCEPTIONSPEC=-fnon-call-exceptions
  78 CHECKREFSPEC=
  79 BACKTRACESPEC=
  80 ATOMICSPEC=
  81
  82 # This case statement supports per-CPU defaults.
  83 case "${host}" in
  84   arm*-elf)
  85         with_libffi_default=no
  86         PROCESS=Ecos
  87         FILE=Posix
  88         CHECKREFSPEC=-fcheck-references
  89         EXCEPTIONSPEC=
  90         enable_java_net_default=no
  91         enable_getenv_properties_default=no
  92         enable_main_args_default=no
  93         sysdeps_dir=arm
  94         ;;
  95   arm*-linux*)
  96         libgcj_interpreter=yes
  97         sysdeps_dir=arm
  98         fallback_backtrace_h=sysdep/arm/backtrace.h
  99         libgcj_cxxflags=-Wno-abi
 100         ATOMICSPEC=-fuse-atomic-builtins
 101         # Work around a strange libtool feature that causes libraries
 102         # to be linked with libgcc_s but not libgcc.
 103         LDFLAGS="${LDFLAGS} -Wl,-lgcc"
 104         ;;
 105   mips-tx39-*|mipstx39-unknown-*)
 106         libgcj_flags="${libgcj_flags} -G 0"
 107         LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"
 108         AM_RUNTESTFLAGS="--target_board=jmr3904-sim"
 109         # Use "Ecos" processes since they are a no-op.
 110         PROCESS=Ecos
 111         FILE=Posix
 112         enable_java_net_default=no
 113         enable_getenv_properties_default=no
 114         ;;
 115   mips*-*)
 116         libgcj_interpreter=yes
 117         ;;
 118   i686-*|i586-*|i486-*|i386-*)
 119         sysdeps_dir=i386
 120         # With -fomit-frame-pointer -maccumulate-outgoing-args (implied),
 121         # the .text section of libgcj.so is 30k larger, and the .eh_frame
 122         # section is 1.4M smaller.
 123         libgcj_flags="${libgcj_flags} -ffloat-store -fomit-frame-pointer"
 124         # On Solaris we have defined 'sun' which later conflicts with
 125         # namespace usage. So to work this away we use the below undefine.
 126         libgcj_flags="${libgcj_flags} -Usun"
 127         libgcj_interpreter=yes
 128         libgcj_cxxflags=
 129         libgcj_cflags=
 130         DIVIDESPEC=-fno-use-divide-subroutine
 131         enable_hash_synchronization_default=yes
 132         slow_pthread_self=yes
 133         ;;
 134   x86_64-*)
 135         sysdeps_dir=i386
 136         # For 64-bit we always use SSE registers for arithmetic,
 137         # which doesn't have the extra precision problems of the fpu.
 138         # But be careful about 32-bit multilibs.
 139         case " $CC " in
 140         *" -m32 "*)
 141                 libgcj_flags="${libgcj_flags} -ffloat-store" ;;
 142         esac
 143         libgcj_flags="${libgcj_flags} -fomit-frame-pointer"
 144         # On Solaris we have defined 'sun' which later conflicts with
 145         # namespace usage. So to work this away we use the below undefine.
 146         libgcj_flags="${libgcj_flags} -Usun"
 147         libgcj_cxxflags=
 148         libgcj_cflags=
 149         DIVIDESPEC=-fno-use-divide-subroutine
 150         enable_hash_synchronization_default=yes
 151         slow_pthread_self=yes
 152         libgcj_interpreter=yes
 153         ;;
 154   alpha*-*)
 155         sysdeps_dir=alpha
 156         libgcj_flags="${libgcj_flags} -mieee"
 157         libgcj_interpreter=yes
 158         enable_hash_synchronization_default=yes
 159         IEEESPEC=-mieee
 160         ;;
 161   hppa*-*)
 162         sysdeps_dir=pa
 163         libgcj_interpreter=yes
 164         enable_hash_synchronization_default=no
 165         ;;
 166   m68k-*)
 167         sysdeps_dir=m68k
 168         libgcj_interpreter=yes
 169         ;;
 170   powerpc64*-*)
 171         sysdeps_dir=powerpc
 172         libgcj_interpreter=yes
 173         if [ x`$CC -print-multi-os-directory` = x../lib64 ]; then
 174             libgcj_flags="${libgcj_flags} -mminimal-toc"
 175         fi
 176         enable_hash_synchronization_default=yes
 177         slow_pthread_self=yes
 178         ;;
 179   powerpc*-*)
 180         sysdeps_dir=powerpc
 181         libgcj_interpreter=yes
 182         enable_hash_synchronization_default=yes
 183         slow_pthread_self=yes
 184         ;;
 185   s390*-*)
 186         sysdeps_dir=s390
 187         libgcj_interpreter=yes
 188         DIVIDESPEC=-fno-use-divide-subroutine
 189         enable_hash_synchronization_default=yes
 190         ;;
 191   sparc*-*)
 192         sysdeps_dir=sparc
 193         # On Solaris we have defined 'sun' which later conflicts with
 194         # namespace usage. So to work this away we use the below undefine.
 195         libgcj_flags="${libgcj_flags} -Usun"
 196         libgcj_interpreter=yes
 197         ;;
 198   ia64-*)
 199         sysdeps_dir=ia64
 200         libgcj_flags="${libgcj_flags} -funwind-tables"
 201         libgcj_interpreter=yes
 202         enable_hash_synchronization_default=yes
 203         ;;
 204   sh-* | sh[34]*-*)
 205         sysdeps_dir=sh
 206         libgcj_flags="${libgcj_flags} -mieee"
 207         libgcj_interpreter=yes
 208         enable_hash_synchronization_default=yes
 209         IEEESPEC=-mieee
 210         ;;
 211 esac
 212
 213 # This case statement supports generic port properties and may refine
 214 # the above per-CPU defaults.  Note: If your OS implements
 215 # MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal
 216 # here.
 217 case "${host}" in
 218   i[34567]86*-linux* | \
 219   powerpc*-linux* | \
 220   alpha*-linux* | \
 221   s390*-linux* | \
 222   sparc*-linux* | \
 223   ia64-* | \
 224   x86_64*-linux* | \
 225   hppa*-linux* | \
 226   m68k*-linux* | \
 227   sh-linux* | sh[34]*-linux*)
 228         can_unwind_signal=yes
 229         libgcj_ld_symbolic='-Wl,-Bsymbolic'
 230         if test x$slow_pthread_self = xyes \
 231            && test x$cross_compiling != xyes; then
 232           cat > conftest.c <<EOF
 233 #define _GNU_SOURCE 1
 234 #include <pthread.h>
 235 #include <stdlib.h>
 236 #include <sys/resource.h>
 237 #include <limits.h>
 238
 239 void *
 240 tf (void *arg __attribute__ ((unused)))
 241 {
 242   pthread_attr_t a;
 243   size_t s;
 244
 245   if (pthread_getattr_np (pthread_self (), &a)
 246       || pthread_attr_getstacksize (&a, &s)
 247       || s > 2 * PTHREAD_STACK_MIN)
 248     exit (1);
 249   exit (0);
 250 }
 251
 252 int
 253 main (int argc, char **argv)
 254 {
 255   pthread_t p;
 256   void *ret;
 257   struct rlimit r;
 258
 259   if (argc == 2)
 260     {
 261       r.rlim_cur = 2 * PTHREAD_STACK_MIN;
 262       r.rlim_max = 2 * PTHREAD_STACK_MIN;
 263       if (setrlimit (RLIMIT_STACK, &r))
 264         exit (1);
 265       execl (argv[1], argv[0], NULL);
 266       exit (1);
 267     }
 268
 269   if (pthread_create (&p, NULL, tf, NULL)
 270       || pthread_join (p, &ret))
 271     exit (1);
 272   exit (1);
 273 }
 274 EOF
 275           $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \
 276           ./conftest ./conftest && slow_pthread_self=
 277           rm -f conftest conftest.c
 278         fi
 279         ;;
 280   i[34567]86*-kfreebsd*-gnu | x86_64*-kfreebsd*-gnu)
 281         libgcj_ld_symbolic='-Wl,-Bsymbolic'
 282         slow_pthread_self=
 283         ;;
 284   i[34567]86-*-solaris2.1[0-9]* )
 285         sysdeps_dir=i386
 286         DIVIDESPEC=-f%{m32:no-}%{!m32:%{!m64:no-}}%{m64:}use-divide-subroutine
 287         ;;
 288   x86_64-*-solaris2.1[0-9]* )
 289         sysdeps_dir=i386
 290         DIVIDESPEC=-f%{m32:no-}use-divide-subroutine
 291         ;;
 292   arm*-linux* )
 293         slow_pthread_self=no
 294         can_unwind_signal=no
 295         CHECKREFSPEC=-fcheck-references
 296         DIVIDESPEC=-fuse-divide-subroutine
 297         ;;
 298   mips*-*-linux* )
 299         sysdeps_dir=mips
 300         can_unwind_signal=yes
 301         DIVIDESPEC=-fno-use-divide-subroutine
 302         enable_hash_synchronization_default=yes
 303         ;;
 304   powerpc*-*-darwin*)
 305         enable_hash_synchronization_default=yes
 306         slow_pthread_self=
 307         can_unwind_signal=yes
 308         ;;
 309   i?86-*-darwin*)
 310         enable_hash_synchronization_default=yes
 311         slow_pthread_self=
 312         can_unwind_signal=no
 313         ;;
 314   i?86-*-darwin[912]*)
 315         can_unwind_signal=yes
 316         DIVIDESPEC=-f%{m32:no-}%{!m32:%{!m64:no-}}%{m64:}use-divide-subroutine
 317         ;;
 318   x86_64-*-darwin[912]*)
 319         enable_hash_synchronization_default=yes
 320         slow_pthread_self=
 321         can_unwind_signal=yes
 322         DIVIDESPEC=-fuse-divide-subroutine
 323         CHECKREFSPEC=-fcheck-references
 324         ;;
 325   i?86-*-solaris2* | x86_64-*-solaris2.1[0-9]*)
 326         can_unwind_signal=yes
 327         ;;
 328   *-*-freebsd*)
 329         slow_pthread_self=
 330         ;;
 331   *-mingw*)
 332         libgcj_flags="${libgcj_flags} -fno-omit-frame-pointer"
 333         # FIXME: win32_exception_handler( ) in win32.cc does not do the
 334         # right stuff yet w.r.t. SEH. Live with the following for now.
 335         can_unwind_signal=no
 336         CHECKREFSPEC=-fcheck-references
 337         DIVIDESPEC=-fuse-divide-subroutine
 338         ;;
 339   *-cygwin*)
 340         # The cygwin linker doesn't do 8-byte alignment by default, so
 341         # disable hash synchronization for now.
 342         enable_hash_synchronization_default=no
 343         slow_pthread_self=
 344         ;;
 345   hppa*-hp-hpux11.*)
 346         slow_pthread_self=no
 347         can_unwind_signal=yes
 348         DIVIDESPEC=-fuse-divide-subroutine
 349         ;;
 350   sparc*-sun-solaris2.*)
 351         slow_pthread_self=
 352         can_unwind_signal=yes
 353         ;;
 354 esac
 355
 356 case "${host}" in
 357   *-cygwin* | *-mingw*)
 358         fallback_backtrace_h=sysdep/i386/backtrace.h
 359         # We need a frame pointer on Windows, so override BACKTRACESPEC
 360         BACKTRACESPEC=
 361         # Win32 DLLs are limited to 64k exported symbols each.
 362         enable_libgcj_sublibs_default=yes
 363         libgcj_sublib_ltflags='$(lt_host_flags) \
 364             -Wl,-u,__ZN3org4ietf4jgss10GSSManagerC1Ev,-L..,-lgcj-noncore-dummy'
 365         libgcj_sublib_core_extra_deps=libgcj-noncore-dummy.dll.a
 366   ;;
 367 esac
 368
 369 case "${host}" in
 370   ia64-*)
 371         descriptor_h=sysdep/descriptor-y.h
 372         ;;
 373
 374   hppa*64*-*-hpux*)
 375         descriptor_h=sysdep/pa/descriptor-pa64-hpux.h
 376         ;;
 377
 378   hppa*-*-hpux*)
 379         descriptor_h=sysdep/pa/descriptor-pa32-hpux.h
 380         ;;
 381
 382   hppa*-*)
 383         descriptor_h=sysdep/pa/descriptor.h
 384         ;;
 385
 386   rs6000-* | powerpc*-*)
 387         descriptor_h=sysdep/powerpc/descriptor.h
 388         ;;
 389
 390   *)
 391         descriptor_h=sysdep/descriptor-n.h
 392         ;;
 393 esac
 394
 395 case "${host}" in
 396   *linux*|*-kfreebsd*-gnu|*-gnu*)
 397     use_libgcj_bc=yes
 398   ;;
 399   *)
 400     use_libgcj_bc=no
 401   ;;
 402 esac
 403
 404 libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"
 405 libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"
 406 libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"