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 "$target"
  67
  68 DIVIDESPEC=-fuse-divide-subroutine
  69 EXCEPTIONSPEC=-fnon-call-exceptions
  70 CHECKREFSPEC=
  71 BACKTRACESPEC=
  72 ATOMICSPEC=
  73
  74 # This case statement supports per-CPU defaults.
  75 case "${host}" in
  76   arm*-elf)
  77         with_libffi_default=no
  78         PROCESS=Ecos
  79         FILE=Posix
  80         CHECKREFSPEC=-fcheck-references
  81         EXCEPTIONSPEC=
  82         enable_java_net_default=no
  83         enable_getenv_properties_default=no
  84         enable_main_args_default=no
  85         sysdeps_dir=arm
  86         ;;
  87   arm*-linux*)
  88         libgcj_interpreter=yes
  89         sysdeps_dir=arm
  90         fallback_backtrace_h=sysdep/arm/backtrace.h
  91         libgcj_cxxflags=-Wno-abi
  92         ATOMICSPEC=-fuse-atomic-builtins
  93         # Work around a strange libtool feature that causes libraries
  94         # to be linked with libgcc_s but not libgcc.
  95         LDFLAGS="${LDFLAGS} -Wl,-lgcc"
  96         ;;
  97   mips-tx39-*|mipstx39-unknown-*)
  98         libgcj_flags="${libgcj_flags} -G 0"
  99         LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"
 100         AM_RUNTESTFLAGS="--target_board=jmr3904-sim"
 101         # Use "Ecos" processes since they are a no-op.
 102         PROCESS=Ecos
 103         FILE=Posix
 104         enable_java_net_default=no
 105         enable_getenv_properties_default=no
 106         ;;
 107   mips*-*)
 108         libgcj_interpreter=yes
 109         ;;
 110   i686-*|i586-*|i486-*|i386-*)
 111         sysdeps_dir=i386
 112         # With -fomit-frame-pointer -maccumulate-outgoing-args (implied),
 113         # the .text section of libgcj.so is 30k larger, and the .eh_frame
 114         # section is 1.4M smaller.
 115         libgcj_flags="${libgcj_flags} -ffloat-store -fomit-frame-pointer"
 116         # On Solaris we have defined 'sun' which later conflicts with
 117         # namespace usage. So to work this away we use the below undefine.
 118         libgcj_flags="${libgcj_flags} -Usun"
 119         libgcj_interpreter=yes
 120         libgcj_cxxflags=
 121         libgcj_cflags=
 122         DIVIDESPEC=-fno-use-divide-subroutine
 123         enable_hash_synchronization_default=yes
 124         slow_pthread_self=yes
 125         ;;
 126   x86_64-*)
 127         sysdeps_dir=x86-64
 128         # For 64-bit we always use SSE registers for arithmetic,
 129         # which doesn't have the extra precision problems of the fpu.
 130         # But be careful about 32-bit multilibs.
 131         case " $CC " in
 132         *" -m32 "*)
 133                 libgcj_flags="${libgcj_flags} -ffloat-store" ;;
 134         esac
 135         libgcj_flags="${libgcj_flags} -fomit-frame-pointer"
 136         libgcj_cxxflags=
 137         libgcj_cflags=
 138         DIVIDESPEC=-fno-use-divide-subroutine
 139         enable_hash_synchronization_default=yes
 140         slow_pthread_self=yes
 141         libgcj_interpreter=yes
 142         ;;
 143   alpha*-*)
 144         sysdeps_dir=alpha
 145         libgcj_flags="${libgcj_flags} -mieee"
 146         libgcj_interpreter=yes
 147         enable_hash_synchronization_default=yes
 148         IEEESPEC=-mieee
 149         ;;
 150   hppa*-*)
 151         sysdeps_dir=pa
 152         libgcj_interpreter=yes
 153         enable_hash_synchronization_default=no
 154         ;;
 155   m68k-*)
 156         sysdeps_dir=m68k
 157         libgcj_interpreter=yes
 158         ;;
 159   powerpc64*-*)
 160         sysdeps_dir=powerpc
 161         libgcj_interpreter=yes
 162         if [ x`$CC -print-multi-os-directory` = x../lib64 ]; then
 163             libgcj_flags="${libgcj_flags} -mminimal-toc"
 164         fi
 165         enable_hash_synchronization_default=yes
 166         slow_pthread_self=yes
 167         ;;
 168   powerpc*-*)
 169         sysdeps_dir=powerpc
 170         libgcj_interpreter=yes
 171         enable_hash_synchronization_default=yes
 172         slow_pthread_self=yes
 173         ;;
 174   s390*-*)
 175         sysdeps_dir=s390
 176         libgcj_interpreter=yes
 177         DIVIDESPEC=-fno-use-divide-subroutine
 178         enable_hash_synchronization_default=yes
 179         ;;
 180   sparc*-*)
 181         sysdeps_dir=sparc
 182         # On Solaris we have defined 'sun' which later conflicts with
 183         # namespace usage. So to work this away we use the below undefine.
 184         libgcj_flags="${libgcj_flags} -Usun"
 185         libgcj_interpreter=yes
 186         ;;
 187   ia64-*)
 188         sysdeps_dir=ia64
 189         libgcj_flags="${libgcj_flags} -funwind-tables"
 190         libgcj_interpreter=yes
 191         enable_hash_synchronization_default=yes
 192         ;;
 193   sh-* | sh[34]*-*)
 194         sysdeps_dir=sh
 195         libgcj_flags="${libgcj_flags} -mieee"
 196         libgcj_interpreter=yes
 197         enable_hash_synchronization_default=yes
 198         IEEESPEC=-mieee
 199         ;;
 200 esac
 201
 202 # This case statement supports generic port properties and may refine
 203 # the above per-CPU defaults.  Note: If your OS implements
 204 # MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal
 205 # here.
 206 case "${host}" in
 207   i[34567]86*-linux* | \
 208   powerpc*-linux* | \
 209   alpha*-linux* | \
 210   s390*-linux* | \
 211   sparc*-linux* | \
 212   ia64-* | \
 213   x86_64*-linux* | \
 214   hppa*-linux* | \
 215   m68k*-linux* | \
 216   sh-linux* | sh[34]*-linux*)
 217         can_unwind_signal=yes
 218         libgcj_ld_symbolic='-Wl,-Bsymbolic'
 219         if test x$slow_pthread_self = xyes \
 220            && test x$cross_compiling != xyes; then
 221           cat > conftest.c <<EOF
 222 #define _GNU_SOURCE 1
 223 #include <pthread.h>
 224 #include <stdlib.h>
 225 #include <sys/resource.h>
 226 #include <limits.h>
 227
 228 void *
 229 tf (void *arg __attribute__ ((unused)))
 230 {
 231   pthread_attr_t a;
 232   size_t s;
 233
 234   if (pthread_getattr_np (pthread_self (), &a)
 235       || pthread_attr_getstacksize (&a, &s)
 236       || s > 2 * PTHREAD_STACK_MIN)
 237     exit (1);
 238   exit (0);
 239 }
 240
 241 int
 242 main (int argc, char **argv)
 243 {
 244   pthread_t p;
 245   void *ret;
 246   struct rlimit r;
 247
 248   if (argc == 2)
 249     {
 250       r.rlim_cur = 2 * PTHREAD_STACK_MIN;
 251       r.rlim_max = 2 * PTHREAD_STACK_MIN;
 252       if (setrlimit (RLIMIT_STACK, &r))
 253         exit (1);
 254       execl (argv[1], argv[0], NULL);
 255       exit (1);
 256     }
 257
 258   if (pthread_create (&p, NULL, tf, NULL)
 259       || pthread_join (p, &ret))
 260     exit (1);
 261   exit (1);
 262 }
 263 EOF
 264           $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \
 265           ./conftest ./conftest && slow_pthread_self=
 266           rm -f conftest conftest.c
 267         fi
 268         ;;
 269    i[34567]86*-kfreebsd*-gnu | x86_64*-kfreebsd*-gnu)
 270         libgcj_ld_symbolic='-Wl,-Bsymbolic'
 271         slow_pthread_self=
 272         ;;
 273   i[34567]86-*-solaris2.1[0-9]* )
 274         sysdeps_dir=x86-64
 275         DIVIDESPEC=-f%{m32:no-}%{!m32:%{!m64:no-}}%{m64:}use-divide-subroutine
 276         ;;
 277   mips-sgi-irix6* )
 278         sysdeps_dir=mips
 279         # disable interpreter, no closure support for N32 and N64 ABIs
 280         libgcj_interpreter=no
 281         ;;
 282   arm*-linux* )
 283         slow_pthread_self=no
 284         can_unwind_signal=no
 285         CHECKREFSPEC=-fcheck-references
 286         DIVIDESPEC=-fuse-divide-subroutine
 287         ;;
 288   mips*-*-linux* )
 289         sysdeps_dir=mips
 290         can_unwind_signal=yes
 291         DIVIDESPEC=-fno-use-divide-subroutine
 292         enable_hash_synchronization_default=yes
 293         ;;
 294   powerpc*-*-darwin*)
 295         enable_hash_synchronization_default=yes
 296         slow_pthread_self=
 297         can_unwind_signal=yes
 298         ;;
 299   i?86-*-darwin*)
 300         enable_hash_synchronization_default=yes
 301         slow_pthread_self=
 302         can_unwind_signal=no
 303         ;;
 304   i?86-*-darwin[912]*)
 305         can_unwind_signal=yes
 306         DIVIDESPEC=-f%{m32:no-}%{!m32:%{!m64:no-}}%{m64:}use-divide-subroutine
 307         ;;
 308   x86_64-*-darwin[912]*)
 309         enable_hash_synchronization_default=yes
 310         slow_pthread_self=
 311         can_unwind_signal=yes
 312         DIVIDESPEC=-fuse-divide-subroutine
 313         CHECKREFSPEC=-fcheck-references
 314         ;;
 315   *-*-freebsd*)
 316         slow_pthread_self=
 317         ;;
 318   *-mingw*)
 319         libgcj_flags="${libgcj_flags} -fno-omit-frame-pointer"
 320         # FIXME: win32_exception_handler( ) in win32.cc does not do the
 321         # right stuff yet w.r.t. SEH. Live with the following for now.
 322         can_unwind_signal=no
 323         CHECKREFSPEC=-fcheck-references
 324         DIVIDESPEC=-fuse-divide-subroutine
 325         ;;
 326   *-cygwin*)
 327         # The cygwin linker doesn't do 8-byte alignment by default, so
 328         # disable hash synchronization for now.
 329         enable_hash_synchronization_default=no
 330         slow_pthread_self=
 331         ;;
 332   hppa*-hp-hpux11.*)
 333         slow_pthread_self=no
 334         can_unwind_signal=yes
 335         DIVIDESPEC=-fuse-divide-subroutine
 336         ;;
 337 esac
 338
 339 case "${host}" in
 340   *-cygwin* | *-mingw*)
 341         fallback_backtrace_h=sysdep/i386/backtrace.h
 342         # We need a frame pointer on Windows, so override BACKTRACESPEC
 343         BACKTRACESPEC=
 344   ;;
 345 esac
 346
 347 case "${host}" in
 348   ia64-*)
 349         descriptor_h=sysdep/descriptor-y.h
 350         ;;
 351
 352   hppa*64*-*-hpux*)
 353         descriptor_h=sysdep/pa/descriptor-pa64-hpux.h
 354         ;;
 355
 356   hppa*-*-hpux*)
 357         descriptor_h=sysdep/pa/descriptor-pa32-hpux.h
 358         ;;
 359
 360   hppa*-*)
 361         descriptor_h=sysdep/pa/descriptor.h
 362         ;;
 363
 364   rs6000-* | powerpc*-*)
 365         descriptor_h=sysdep/powerpc/descriptor.h
 366         ;;
 367
 368   *)
 369         descriptor_h=sysdep/descriptor-n.h
 370         ;;
 371 esac
 372
 373 case "${host}" in
 374   *linux*|*-kfreebsd*-gnu|*-gnu*)
 375     use_libgcj_bc=yes
 376   ;;
 377   *)
 378     use_libgcj_bc=no
 379   ;;
 380 esac
 381
 382 libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"
 383 libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"
 384 libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"