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 #   disable_dladdr      Set to "yes" if dladdr should not be used
  32 #                       (i.e it is broken).
  33 #   fallback_backtrace_h  Header to use for fallback backtrace implementation
  34 #                         (only for targets that don't support DWARF2 unwind)
  35 #   descriptor_h        Header to use for looking past function descriptors
  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 disable_dladdr=
  48 fallback_backtrace_h=sysdep/generic/backtrace.h
  49
  50 case "${target_optspace}:${host}" in
  51   yes:*)
  52     libgcj_flags="${libgcj_flags} -Os"
  53     ;;
  54   :m32r-* | :d10v-* | :d30v-*)
  55     libgcj_flags="${libgcj_flags} -Os"
  56     ;;
  57   no:* | :*)
  58     # Nothing.
  59     ;;
  60 esac
  61
  62 AM_RUNTESTFLAGS=
  63
  64 # Set any host dependent compiler flags.
  65 # THIS TABLE IS SORTED.  KEEP IT THAT WAY.
  66
  67 echo "$target"
  68
  69 DIVIDESPEC=-fuse-divide-subroutine
  70 EXCEPTIONSPEC=-fnon-call-exceptions
  71 CHECKREFSPEC=
  72 BACKTRACESPEC=
  73
  74 # This case statement supports per-CPU defaults.
  75 case "${host}" in
  76   arm*-elf | strongarm*-elf | xscale*-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         ;;
  86   mips-tx39-*|mipstx39-unknown-*)
  87         libgcj_flags="${libgcj_flags} -G 0"
  88         LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"
  89         AM_RUNTESTFLAGS="--target_board=jmr3904-sim"
  90         # Use "Ecos" processes since they are a no-op.
  91         PROCESS=Ecos
  92         FILE=Posix
  93         enable_java_net_default=no
  94         enable_getenv_properties_default=no
  95         ;;
  96   i686-*|i586-*|i486-*|i386-*)
  97         sysdeps_dir=i386
  98         libgcj_flags="${libgcj_flags} -ffloat-store"
  99         libgcj_interpreter=yes
 100         libgcj_cxxflags=
 101         libgcj_cflags=
 102         DIVIDESPEC=-fno-use-divide-subroutine
 103         BACKTRACESPEC=-fomit-frame-pointer
 104         enable_hash_synchronization_default=yes
 105         slow_pthread_self=yes
 106         ;;
 107   x86_64-*)
 108         sysdeps_dir=x86-64
 109         libgcj_flags="${libgcj_flags} -ffloat-store"
 110         libgcj_cxxflags=
 111         libgcj_cflags=
 112         DIVIDESPEC=-f%{m32:no-}use-divide-subroutine
 113         enable_hash_synchronization_default=yes
 114         slow_pthread_self=yes
 115         libgcj_interpreter=yes
 116         ;;
 117   alpha*-*)
 118         sysdeps_dir=alpha
 119         libgcj_flags="${libgcj_flags} -mieee"
 120         libgcj_interpreter=yes
 121         enable_hash_synchronization_default=yes
 122         IEEESPEC=-mieee
 123         ;;
 124   hppa-*)
 125         sysdeps_dir=pa
 126         libgcj_interpreter=yes
 127         enable_hash_synchronization_default=yes
 128         ;;
 129   powerpc64*-*)
 130         sysdeps_dir=powerpc
 131         libgcj_interpreter=yes
 132         if [ x`$CC -print-multi-os-directory` = x../lib64 ]; then
 133             libgcj_flags="${libgcj_flags} -mminimal-toc"
 134         fi
 135         enable_hash_synchronization_default=yes
 136         slow_pthread_self=yes
 137         ;;
 138   powerpc*-*)
 139         sysdeps_dir=powerpc
 140         libgcj_interpreter=yes
 141         enable_hash_synchronization_default=yes
 142         slow_pthread_self=yes
 143         ;;
 144   s390*-*)
 145         sysdeps_dir=s390
 146         libgcj_interpreter=yes
 147         DIVIDESPEC=-fno-use-divide-subroutine
 148         enable_hash_synchronization_default=yes
 149         ;;
 150   sparc*-*)
 151         libgcj_interpreter=yes
 152         ;;
 153   ia64-*)
 154         sysdeps_dir=ia64
 155         libgcj_flags="${libgcj_flags} -funwind-tables"
 156         libgcj_interpreter=yes
 157         enable_hash_synchronization_default=yes
 158         ;;
 159   sh-* | sh[34]*-*)
 160         sysdeps_dir=sh
 161         libgcj_flags="${libgcj_flags} -mieee"
 162         libgcj_interpreter=yes
 163         enable_hash_synchronization_default=yes
 164         IEEESPEC=-mieee
 165         ;;
 166 esac
 167
 168 # This case statement supports generic port properties and may refine
 169 # the above per-CPU defaults.  Note: If your OS implements
 170 # MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal
 171 # here.
 172 case "${host}" in
 173   i[34567]86*-linux* | \
 174   powerpc*-linux* | \
 175   alpha*-linux* | \
 176   s390*-linux* | \
 177   sparc*-linux* | \
 178   ia64-* | \
 179   x86_64*-linux* | \
 180   hppa*-linux* | \
 181   sh-linux* | sh[34]*-linux*)
 182         can_unwind_signal=yes
 183         libgcj_ld_symbolic='-Wl,-Bsymbolic'
 184         if test x$slow_pthread_self = xyes \
 185            && test x$cross_compiling != xyes; then
 186           cat > conftest.c <<EOF
 187 #define _GNU_SOURCE 1
 188 #include <pthread.h>
 189 #include <stdlib.h>
 190 #include <sys/resource.h>
 191 #include <limits.h>
 192
 193 void *
 194 tf (void *arg __attribute__ ((unused)))
 195 {
 196   pthread_attr_t a;
 197   size_t s;
 198
 199   if (pthread_getattr_np (pthread_self (), &a)
 200       || pthread_attr_getstacksize (&a, &s)
 201       || s > 2 * PTHREAD_STACK_MIN)
 202     exit (1);
 203   exit (0);
 204 }
 205
 206 int
 207 main (int argc, char **argv)
 208 {
 209   pthread_t p;
 210   void *ret;
 211   struct rlimit r;
 212
 213   if (argc == 2)
 214     {
 215       r.rlim_cur = 2 * PTHREAD_STACK_MIN;
 216       r.rlim_max = 2 * PTHREAD_STACK_MIN;
 217       if (setrlimit (RLIMIT_STACK, &r))
 218         exit (1);
 219       execl (argv[1], argv[0], NULL);
 220       exit (1);
 221     }
 222
 223   if (pthread_create (&p, NULL, tf, NULL)
 224       || pthread_join (p, &ret))
 225     exit (1);
 226   exit (1);
 227 }
 228 EOF
 229           $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \
 230           ./conftest ./conftest && slow_pthread_self=
 231           rm -f conftest conftest.c
 232         fi
 233         ;;
 234   i[34567]86-*-solaris2.1[0-9]* )
 235         sysdeps_dir=x86-64
 236         DIVIDESPEC=-f%{m32:no-}%{!m32:%{!m64:no-}}%{m64:}use-divide-subroutine
 237         ;;
 238   mips*-*-linux* )
 239         sysdeps_dir=mips
 240         can_unwind_signal=yes
 241         DIVIDESPEC=-fno-use-divide-subroutine
 242         case "${host}" in
 243             mipsel*-linux* | mipsisa32el*-linux*)
 244                 enable_hash_synchronization_default=yes
 245                 disable_dladdr=yes
 246             ;;
 247         esac
 248         ;;
 249   powerpc*-*-darwin*)
 250         enable_hash_synchronization_default=yes
 251         slow_pthread_self=
 252         can_unwind_signal=yes
 253         ;;
 254   *-*-freebsd*)
 255         slow_pthread_self=
 256         ;;
 257   *-mingw*)
 258         # FIXME: win32_exception_handler( ) in win32.cc does not do the
 259         # right stuff yet w.r.t. SEH. Live with the following for now.
 260         can_unwind_signal=no
 261         CHECKREFSPEC=-fcheck-references
 262         DIVIDESPEC=-fuse-divide-subroutine
 263         ;;
 264   *-cygwin*)
 265         # The cygwin linker doesn't do 8-byte alignment by default, so
 266         # disable hash synchronization for now.
 267         enable_hash_synchronization_default=no
 268         slow_pthread_self=
 269         ;;
 270 esac
 271
 272 case "${host}" in
 273   *-cygwin* | *-mingw*)
 274         fallback_backtrace_h=sysdep/i386/backtrace.h
 275         # We need a frame pointer on Windows, so override BACKTRACESPEC
 276         BACKTRACESPEC=
 277   ;;
 278 esac
 279
 280 case "${host}" in
 281   ia64-* | hppa*-*)
 282         descriptor_h=sysdep/descriptor-y.h
 283         ;;
 284
 285   rs6000-* | powerpc*-*)
 286         descriptor_h=sysdep/powerpc/descriptor.h
 287         ;;
 288
 289   *)
 290         descriptor_h=sysdep/descriptor-n.h
 291         ;;
 292 esac
 293
 294 libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"
 295 libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"
 296 libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"