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
  35 libgcj_flags=
  36 libgcj_cflags=
  37 libgcj_cxxflags=
  38 libgcj_javaflags=
  39 libgcj_interpreter=
  40 enable_java_net_default=yes
  41 enable_hash_synchronization_default=no
  42 sysdeps_dir=generic
  43 slow_pthread_self=
  44 can_unwind_signal=no
  45 fallback_backtrace_h=sysdep/generic/backtrace.h
  46
  47 case "${target_optspace}:${host}" in
  48   yes:*)
  49     libgcj_flags="${libgcj_flags} -Os"
  50     ;;
  51   :m32r-* | :d10v-* | :d30v-*)
  52     libgcj_flags="${libgcj_flags} -Os"
  53     ;;
  54   no:* | :*)
  55     # Nothing.
  56     ;;
  57 esac
  58
  59 AM_RUNTESTFLAGS=
  60
  61 # Set any host dependent compiler flags.
  62 # THIS TABLE IS SORTED.  KEEP IT THAT WAY.
  63
  64 echo "$target"
  65
  66 DIVIDESPEC=-fuse-divide-subroutine
  67 EXCEPTIONSPEC=-fnon-call-exceptions
  68 CHECKREFSPEC=
  69 BACKTRACESPEC=
  70
  71 # This case statement supports per-CPU defaults.
  72 case "${host}" in
  73   arm*-elf | strongarm*-elf | xscale*-elf)
  74         with_libffi_default=no
  75         PROCESS=Ecos
  76         FILE=Posix
  77         CHECKREFSPEC=-fcheck-references
  78         EXCEPTIONSPEC=
  79         enable_java_net_default=no
  80         enable_getenv_properties_default=no
  81         enable_main_args_default=no
  82         ;;
  83   mips-tx39-*|mipstx39-unknown-*)
  84         libgcj_flags="${libgcj_flags} -G 0"
  85         LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"
  86         AM_RUNTESTFLAGS="--target_board=jmr3904-sim"
  87         # Use "Ecos" processes since they are a no-op.
  88         PROCESS=Ecos
  89         FILE=Posix
  90         enable_java_net_default=no
  91         enable_getenv_properties_default=no
  92         ;;
  93   i686-*|i586-*|i486-*|i386-*)
  94         sysdeps_dir=i386
  95         # With -fomit-frame-pointer -maccumulate-outgoing-args (implied),
  96         # the .text section of libgcj.so is 30k larger, and the .eh_frame
  97         # section is 1.4M smaller.
  98         libgcj_flags="${libgcj_flags} -ffloat-store -fomit-frame-pointer"
  99         libgcj_interpreter=yes
 100         libgcj_cxxflags=
 101         libgcj_cflags=
 102         DIVIDESPEC=-fno-use-divide-subroutine
 103         enable_hash_synchronization_default=yes
 104         slow_pthread_self=yes
 105         ;;
 106   x86_64-*)
 107         sysdeps_dir=x86-64
 108         # For 64-bit we always use SSE registers for arithmetic,
 109         # which doesn't have the extra precision problems of the fpu.
 110         # But be careful about 32-bit multilibs.
 111         case " $CC " in
 112         *" -m32 "*)
 113                 libgcj_flags="${libgcj_flags} -ffloat-store" ;;
 114         esac
 115         libgcj_flags="${libgcj_flags} -fomit-frame-pointer"
 116         libgcj_cxxflags=
 117         libgcj_cflags=
 118         DIVIDESPEC=-fno-use-divide-subroutine
 119         enable_hash_synchronization_default=yes
 120         slow_pthread_self=yes
 121         libgcj_interpreter=yes
 122         ;;
 123   alpha*-*)
 124         sysdeps_dir=alpha
 125         libgcj_flags="${libgcj_flags} -mieee"
 126         libgcj_interpreter=yes
 127         enable_hash_synchronization_default=yes
 128         IEEESPEC=-mieee
 129         ;;
 130   hppa*-*)
 131         sysdeps_dir=pa
 132         libgcj_interpreter=yes
 133         enable_hash_synchronization_default=no
 134         ;;
 135   powerpc64*-*)
 136         sysdeps_dir=powerpc
 137         libgcj_interpreter=yes
 138         if [ x`$CC -print-multi-os-directory` = x../lib64 ]; then
 139             libgcj_flags="${libgcj_flags} -mminimal-toc"
 140         fi
 141         enable_hash_synchronization_default=yes
 142         slow_pthread_self=yes
 143         ;;
 144   powerpc*-*)
 145         sysdeps_dir=powerpc
 146         libgcj_interpreter=yes
 147         enable_hash_synchronization_default=yes
 148         slow_pthread_self=yes
 149         ;;
 150   s390*-*)
 151         sysdeps_dir=s390
 152         libgcj_interpreter=yes
 153         DIVIDESPEC=-fno-use-divide-subroutine
 154         enable_hash_synchronization_default=yes
 155         ;;
 156   sparc*-*)
 157         libgcj_interpreter=yes
 158         ;;
 159   ia64-*)
 160         sysdeps_dir=ia64
 161         libgcj_flags="${libgcj_flags} -funwind-tables"
 162         libgcj_interpreter=yes
 163         enable_hash_synchronization_default=yes
 164         ;;
 165   sh-* | sh[34]*-*)
 166         sysdeps_dir=sh
 167         libgcj_flags="${libgcj_flags} -mieee"
 168         libgcj_interpreter=yes
 169         enable_hash_synchronization_default=yes
 170         IEEESPEC=-mieee
 171         ;;
 172 esac
 173
 174 # This case statement supports generic port properties and may refine
 175 # the above per-CPU defaults.  Note: If your OS implements
 176 # MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal
 177 # here.
 178 case "${host}" in
 179   i[34567]86*-linux* | \
 180   powerpc*-linux* | \
 181   alpha*-linux* | \
 182   s390*-linux* | \
 183   sparc*-linux* | \
 184   ia64-* | \
 185   x86_64*-linux* | \
 186   hppa*-linux* | \
 187   sh-linux* | sh[34]*-linux*)
 188         can_unwind_signal=yes
 189         libgcj_ld_symbolic='-Wl,-Bsymbolic'
 190         if test x$slow_pthread_self = xyes \
 191            && test x$cross_compiling != xyes; then
 192           cat > conftest.c <<EOF
 193 #define _GNU_SOURCE 1
 194 #include <pthread.h>
 195 #include <stdlib.h>
 196 #include <sys/resource.h>
 197 #include <limits.h>
 198
 199 void *
 200 tf (void *arg __attribute__ ((unused)))
 201 {
 202   pthread_attr_t a;
 203   size_t s;
 204
 205   if (pthread_getattr_np (pthread_self (), &a)
 206       || pthread_attr_getstacksize (&a, &s)
 207       || s > 2 * PTHREAD_STACK_MIN)
 208     exit (1);
 209   exit (0);
 210 }
 211
 212 int
 213 main (int argc, char **argv)
 214 {
 215   pthread_t p;
 216   void *ret;
 217   struct rlimit r;
 218
 219   if (argc == 2)
 220     {
 221       r.rlim_cur = 2 * PTHREAD_STACK_MIN;
 222       r.rlim_max = 2 * PTHREAD_STACK_MIN;
 223       if (setrlimit (RLIMIT_STACK, &r))
 224         exit (1);
 225       execl (argv[1], argv[0], NULL);
 226       exit (1);
 227     }
 228
 229   if (pthread_create (&p, NULL, tf, NULL)
 230       || pthread_join (p, &ret))
 231     exit (1);
 232   exit (1);
 233 }
 234 EOF
 235           $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \
 236           ./conftest ./conftest && slow_pthread_self=
 237           rm -f conftest conftest.c
 238         fi
 239         ;;
 240   i[34567]86-*-solaris2.1[0-9]* )
 241         sysdeps_dir=x86-64
 242         DIVIDESPEC=-f%{m32:no-}%{!m32:%{!m64:no-}}%{m64:}use-divide-subroutine
 243         ;;
 244   mips*-*-linux* )
 245         sysdeps_dir=mips
 246         can_unwind_signal=yes
 247         DIVIDESPEC=-fno-use-divide-subroutine
 248         case "${host}" in
 249             mipsel*-linux* | mipsisa32el*-linux*)
 250                 enable_hash_synchronization_default=yes
 251             ;;
 252         esac
 253         ;;
 254   powerpc*-*-darwin*)
 255         enable_hash_synchronization_default=yes
 256         slow_pthread_self=
 257         can_unwind_signal=yes
 258         ;;
 259   *-*-freebsd*)
 260         slow_pthread_self=
 261         ;;
 262   *-mingw*)
 263         libgcj_flags="${libgcj_flags} -fno-omit-frame-pointer"
 264         # FIXME: win32_exception_handler( ) in win32.cc does not do the
 265         # right stuff yet w.r.t. SEH. Live with the following for now.
 266         can_unwind_signal=no
 267         CHECKREFSPEC=-fcheck-references
 268         DIVIDESPEC=-fuse-divide-subroutine
 269         ;;
 270   *-cygwin*)
 271         # The cygwin linker doesn't do 8-byte alignment by default, so
 272         # disable hash synchronization for now.
 273         enable_hash_synchronization_default=no
 274         slow_pthread_self=
 275         ;;
 276   hppa*-hp-hpux11.*)
 277         slow_pthread_self=no
 278         can_unwind_signal=yes
 279         DIVIDESPEC=-fuse-divide-subroutine
 280         ;;
 281 esac
 282
 283 case "${host}" in
 284   *-cygwin* | *-mingw*)
 285         fallback_backtrace_h=sysdep/i386/backtrace.h
 286         # We need a frame pointer on Windows, so override BACKTRACESPEC
 287         BACKTRACESPEC=
 288   ;;
 289 esac
 290
 291 case "${host}" in
 292   ia64-*)
 293         descriptor_h=sysdep/descriptor-y.h
 294         ;;
 295
 296   hppa*64*-*-hpux*)
 297         descriptor_h=sysdep/pa/descriptor-pa64-hpux.h
 298         ;;
 299
 300   hppa*-*-hpux*)
 301         descriptor_h=sysdep/pa/descriptor-pa32-hpux.h
 302         ;;
 303
 304   hppa*-*)
 305         descriptor_h=sysdep/pa/descriptor.h
 306         ;;
 307
 308   rs6000-* | powerpc*-*)
 309         descriptor_h=sysdep/powerpc/descriptor.h
 310         ;;
 311
 312   *)
 313         descriptor_h=sysdep/descriptor-n.h
 314         ;;
 315 esac
 316
 317 libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"
 318 libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"
 319 libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"