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_interpreter  If the bytecode interpreter supports this platform.
  22 #   enable_java_net_default  If java.net native code should be enabled by
  23 #                            default.
  24 #   enable_hash_synchronization_default  If hash synchronization should be
  25 #                                        enabled by default.
  26 #   sysdeps_dir         Directory containing system-dependent headers
  27 #   slow_pthread_self   The synchronization code should try to avoid
  28 #                       pthread_self calls by caching thread IDs in a hashtable
  29 #   can_unwind_signal   Set to "yes" if the EH unwinder supports throwing
  30 #                       from a signal handler.
  31 #   fallback_backtrace_h  Header to use for fallback backtrace implementation
  32 #                         (only for targets that don't support DWARF2 unwind)
  33 #   descriptor_h        Header to use for looking past function descriptors
  34 #   use_libgcj_bc       Whether to build a "libgcj-bc" library for BC-ABI
  35 #                       binaries to link against.
  36
  37 libgcj_flags=
  38 libgcj_cflags=
  39 libgcj_cxxflags=
  40 libgcj_javaflags=
  41 libgcj_interpreter=
  42 enable_java_net_default=yes
  43 enable_hash_synchronization_default=no
  44 sysdeps_dir=generic
  45 slow_pthread_self=
  46 can_unwind_signal=no
  47 fallback_backtrace_h=sysdep/generic/backtrace.h
  48
  49 case "${target_optspace}:${host}" in
  50   yes:*)
  51     libgcj_flags="${libgcj_flags} -Os"
  52     ;;
  53   :m32r-* | :d10v-* | :d30v-*)
  54     libgcj_flags="${libgcj_flags} -Os"
  55     ;;
  56   no:* | :*)
  57     # Nothing.
  58     ;;
  59 esac
  60
  61 AM_RUNTESTFLAGS=
  62
  63 # Set any host dependent compiler flags.
  64 # THIS TABLE IS SORTED.  KEEP IT THAT WAY.
  65
  66 echo "$target"
  67
  68 DIVIDESPEC=-fuse-divide-subroutine
  69 EXCEPTIONSPEC=-fnon-call-exceptions
  70 CHECKREFSPEC=
  71 BACKTRACESPEC=
  72
  73 # This case statement supports per-CPU defaults.
  74 case "${host}" in
  75   arm*-elf | strongarm*-elf | xscale*-elf)
  76         with_libffi_default=no
  77         PROCESS=Ecos
  78         FILE=Posix
  79         CHECKREFSPEC=-fcheck-references
  80         EXCEPTIONSPEC=
  81         enable_java_net_default=no
  82         enable_getenv_properties_default=no
  83         enable_main_args_default=no
  84         sysdeps_dir=arm
  85         ;;
  86   arm*-linux*)
  87         libgcj_interpreter=yes
  88         sysdeps_dir=arm
  89         fallback_backtrace_h=sysdep/arm/backtrace.h
  90         ;;
  91   mips-tx39-*|mipstx39-unknown-*)
  92         libgcj_flags="${libgcj_flags} -G 0"
  93         LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"
  94         AM_RUNTESTFLAGS="--target_board=jmr3904-sim"
  95         # Use "Ecos" processes since they are a no-op.
  96         PROCESS=Ecos
  97         FILE=Posix
  98         enable_java_net_default=no
  99         enable_getenv_properties_default=no
 100         ;;
 101   mips*-*)
 102         libgcj_interpreter=yes
 103         ;;
 104   i686-*|i586-*|i486-*|i386-*)
 105         sysdeps_dir=i386
 106         # With -fomit-frame-pointer -maccumulate-outgoing-args (implied),
 107         # the .text section of libgcj.so is 30k larger, and the .eh_frame
 108         # section is 1.4M smaller.
 109         libgcj_flags="${libgcj_flags} -ffloat-store -fomit-frame-pointer"
 110         # On Solaris we have defined 'sun' which later conflicts with
 111         # namespace usage. So to work this away we use the below undefine.
 112         libgcj_flags="${libgcj_flags} -Usun"
 113         libgcj_interpreter=yes
 114         libgcj_cxxflags=
 115         libgcj_cflags=
 116         DIVIDESPEC=-fno-use-divide-subroutine
 117         enable_hash_synchronization_default=yes
 118         slow_pthread_self=yes
 119         ;;
 120   x86_64-*)
 121         sysdeps_dir=x86-64
 122         # For 64-bit we always use SSE registers for arithmetic,
 123         # which doesn't have the extra precision problems of the fpu.
 124         # But be careful about 32-bit multilibs.
 125         case " $CC " in
 126         *" -m32 "*)
 127                 libgcj_flags="${libgcj_flags} -ffloat-store" ;;
 128         esac
 129         libgcj_flags="${libgcj_flags} -fomit-frame-pointer"
 130         libgcj_cxxflags=
 131         libgcj_cflags=
 132         DIVIDESPEC=-fno-use-divide-subroutine
 133         enable_hash_synchronization_default=yes
 134         slow_pthread_self=yes
 135         libgcj_interpreter=yes
 136         ;;
 137   alpha*-*)
 138         sysdeps_dir=alpha
 139         libgcj_flags="${libgcj_flags} -mieee"
 140         libgcj_interpreter=yes
 141         enable_hash_synchronization_default=yes
 142         IEEESPEC=-mieee
 143         ;;
 144   hppa*-*)
 145         sysdeps_dir=pa
 146         libgcj_interpreter=yes
 147         enable_hash_synchronization_default=no
 148         ;;
 149   m68k-*)
 150         sysdeps_dir=m68k
 151         libgcj_interpreter=yes
 152         ;;
 153   powerpc64*-*)
 154         sysdeps_dir=powerpc
 155         libgcj_interpreter=yes
 156         if [ x`$CC -print-multi-os-directory` = x../lib64 ]; then
 157             libgcj_flags="${libgcj_flags} -mminimal-toc"
 158         fi
 159         enable_hash_synchronization_default=yes
 160         slow_pthread_self=yes
 161         ;;
 162   powerpc*-*)
 163         sysdeps_dir=powerpc
 164         libgcj_interpreter=yes
 165         enable_hash_synchronization_default=yes
 166         slow_pthread_self=yes
 167         ;;
 168   s390*-*)
 169         sysdeps_dir=s390
 170         libgcj_interpreter=yes
 171         DIVIDESPEC=-fno-use-divide-subroutine
 172         enable_hash_synchronization_default=yes
 173         ;;
 174   sparc*-*)
 175         sysdeps_dir=sparc
 176         # On Solaris we have defined 'sun' which later conflicts with
 177         # namespace usage. So to work this away we use the below undefine.
 178         libgcj_flags="${libgcj_flags} -Usun"
 179         libgcj_interpreter=yes
 180         ;;
 181   ia64-*)
 182         sysdeps_dir=ia64
 183         libgcj_flags="${libgcj_flags} -funwind-tables"
 184         libgcj_interpreter=yes
 185         enable_hash_synchronization_default=yes
 186         ;;
 187   sh-* | sh[34]*-*)
 188         sysdeps_dir=sh
 189         libgcj_flags="${libgcj_flags} -mieee"
 190         libgcj_interpreter=yes
 191         enable_hash_synchronization_default=yes
 192         IEEESPEC=-mieee
 193         ;;
 194 esac
 195
 196 # This case statement supports generic port properties and may refine
 197 # the above per-CPU defaults.  Note: If your OS implements
 198 # MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal
 199 # here.
 200 case "${host}" in
 201   i[34567]86*-linux* | \
 202   powerpc*-linux* | \
 203   alpha*-linux* | \
 204   s390*-linux* | \
 205   sparc*-linux* | \
 206   ia64-* | \
 207   x86_64*-linux* | \
 208   hppa*-linux* | \
 209   m68k*-linux* | \
 210   sh-linux* | sh[34]*-linux*)
 211         can_unwind_signal=yes
 212         libgcj_ld_symbolic='-Wl,-Bsymbolic'
 213         if test x$slow_pthread_self = xyes \
 214            && test x$cross_compiling != xyes; then
 215           cat > conftest.c <<EOF
 216 #define _GNU_SOURCE 1
 217 #include <pthread.h>
 218 #include <stdlib.h>
 219 #include <sys/resource.h>
 220 #include <limits.h>
 221
 222 void *
 223 tf (void *arg __attribute__ ((unused)))
 224 {
 225   pthread_attr_t a;
 226   size_t s;
 227
 228   if (pthread_getattr_np (pthread_self (), &a)
 229       || pthread_attr_getstacksize (&a, &s)
 230       || s > 2 * PTHREAD_STACK_MIN)
 231     exit (1);
 232   exit (0);
 233 }
 234
 235 int
 236 main (int argc, char **argv)
 237 {
 238   pthread_t p;
 239   void *ret;
 240   struct rlimit r;
 241
 242   if (argc == 2)
 243     {
 244       r.rlim_cur = 2 * PTHREAD_STACK_MIN;
 245       r.rlim_max = 2 * PTHREAD_STACK_MIN;
 246       if (setrlimit (RLIMIT_STACK, &r))
 247         exit (1);
 248       execl (argv[1], argv[0], NULL);
 249       exit (1);
 250     }
 251
 252   if (pthread_create (&p, NULL, tf, NULL)
 253       || pthread_join (p, &ret))
 254     exit (1);
 255   exit (1);
 256 }
 257 EOF
 258           $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \
 259           ./conftest ./conftest && slow_pthread_self=
 260           rm -f conftest conftest.c
 261         fi
 262         ;;
 263    i[34567]86*-kfreebsd*-gnu | x86_64*-kfreebsd*-gnu)
 264         libgcj_ld_symbolic='-Wl,-Bsymbolic'
 265         slow_pthread_self=
 266         ;;
 267   i[34567]86-*-solaris2.1[0-9]* )
 268         sysdeps_dir=x86-64
 269         DIVIDESPEC=-f%{m32:no-}%{!m32:%{!m64:no-}}%{m64:}use-divide-subroutine
 270         ;;
 271   mips-sgi-irix6* )
 272         sysdeps_dir=mips
 273         # disable interpreter, no closure support for N32 and N64 ABIs
 274         libgcj_interpreter=no
 275         ;;
 276   arm*-linux* )
 277         slow_pthread_self=no
 278         can_unwind_signal=no
 279         CHECKREFSPEC=-fcheck-references
 280         DIVIDESPEC=-fuse-divide-subroutine
 281         ;;
 282   mips*-*-linux* )
 283         sysdeps_dir=mips
 284         can_unwind_signal=yes
 285         DIVIDESPEC=-fno-use-divide-subroutine
 286         enable_hash_synchronization_default=yes
 287         ;;
 288   powerpc*-*-darwin*)
 289         enable_hash_synchronization_default=yes
 290         slow_pthread_self=
 291         can_unwind_signal=yes
 292         ;;
 293   i?86-*-darwin*)
 294         enable_hash_synchronization_default=yes
 295         slow_pthread_self=
 296         can_unwind_signal=no
 297         ;;
 298   *-*-freebsd*)
 299         slow_pthread_self=
 300         ;;
 301   *-mingw*)
 302         libgcj_flags="${libgcj_flags} -fno-omit-frame-pointer"
 303         # FIXME: win32_exception_handler( ) in win32.cc does not do the
 304         # right stuff yet w.r.t. SEH. Live with the following for now.
 305         can_unwind_signal=no
 306         CHECKREFSPEC=-fcheck-references
 307         DIVIDESPEC=-fuse-divide-subroutine
 308         ;;
 309   *-cygwin*)
 310         # The cygwin linker doesn't do 8-byte alignment by default, so
 311         # disable hash synchronization for now.
 312         enable_hash_synchronization_default=no
 313         slow_pthread_self=
 314         ;;
 315   hppa*-hp-hpux11.*)
 316         slow_pthread_self=no
 317         can_unwind_signal=yes
 318         DIVIDESPEC=-fuse-divide-subroutine
 319         ;;
 320 esac
 321
 322 case "${host}" in
 323   *-cygwin* | *-mingw*)
 324         fallback_backtrace_h=sysdep/i386/backtrace.h
 325         # We need a frame pointer on Windows, so override BACKTRACESPEC
 326         BACKTRACESPEC=
 327   ;;
 328 esac
 329
 330 case "${host}" in
 331   ia64-*)
 332         descriptor_h=sysdep/descriptor-y.h
 333         ;;
 334
 335   hppa*64*-*-hpux*)
 336         descriptor_h=sysdep/pa/descriptor-pa64-hpux.h
 337         ;;
 338
 339   hppa*-*-hpux*)
 340         descriptor_h=sysdep/pa/descriptor-pa32-hpux.h
 341         ;;
 342
 343   hppa*-*)
 344         descriptor_h=sysdep/pa/descriptor.h
 345         ;;
 346
 347   rs6000-* | powerpc*-*)
 348         descriptor_h=sysdep/powerpc/descriptor.h
 349         ;;
 350
 351   *)
 352         descriptor_h=sysdep/descriptor-n.h
 353         ;;
 354 esac
 355
 356 case "${host}" in
 357   *linux*|*-kfreebsd*-gnu|*-gnu*)
 358     use_libgcj_bc=yes
 359   ;;
 360   *)
 361     use_libgcj_bc=no
 362   ;;
 363 esac
 364
 365 libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"
 366 libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"
 367 libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"