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
  36 libgcj_flags=
  37 libgcj_cflags=
  38 libgcj_cxxflags=
  39 libgcj_javaflags=
  40 libgcj_interpreter=
  41 enable_java_net_default=yes
  42 enable_hash_synchronization_default=no
  43 sysdeps_dir=generic
  44 slow_pthread_self=
  45 can_unwind_signal=no
  46 disable_dladdr=
  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 "$target"
  67
  68 DIVIDESPEC=-fuse-divide-subroutine
  69 EXCEPTIONSPEC=-fnon-call-exceptions
  70 CHECKREFSPEC=
  71
  72 # This case statement supports per-CPU defaults.
  73 case "${host}" in
  74   arm*-elf | strongarm*-elf | xscale*-elf)
  75         with_libffi_default=no
  76         PROCESS=Ecos
  77         FILE=Posix
  78         CHECKREFSPEC=-fcheck-references
  79         EXCEPTIONSPEC=
  80         enable_java_net_default=no
  81         enable_getenv_properties_default=no
  82         enable_main_args_default=no
  83         ;;
  84   mips-tx39-*|mipstx39-unknown-*)
  85         libgcj_flags="${libgcj_flags} -G 0"
  86         LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"
  87         AM_RUNTESTFLAGS="--target_board=jmr3904-sim"
  88         # Use "Ecos" processes since they are a no-op.
  89         PROCESS=Ecos
  90         FILE=Posix
  91         enable_java_net_default=no
  92         enable_getenv_properties_default=no
  93         ;;
  94   i686-*|i586-*|i486-*|i386-*)
  95         sysdeps_dir=i386
  96         libgcj_flags="${libgcj_flags} -ffloat-store -fno-omit-frame-pointer"
  97         libgcj_interpreter=yes
  98         libgcj_cxxflags=
  99         libgcj_cflags=
 100         DIVIDESPEC=-fno-use-divide-subroutine
 101         enable_hash_synchronization_default=yes
 102         slow_pthread_self=yes
 103         ;;
 104   x86_64-*)
 105         sysdeps_dir=x86-64
 106         libgcj_flags="${libgcj_flags} -ffloat-store -fno-omit-frame-pointer"
 107         libgcj_cxxflags=
 108         libgcj_cflags=
 109         DIVIDESPEC=-f%{m32:no-}use-divide-subroutine
 110         enable_hash_synchronization_default=yes
 111         slow_pthread_self=yes
 112         libgcj_interpreter=yes
 113         ;;
 114   alpha*-*)
 115         sysdeps_dir=alpha
 116         libgcj_flags="${libgcj_flags} -mieee"
 117         libgcj_interpreter=yes
 118         enable_hash_synchronization_default=yes
 119         IEEESPEC=-mieee
 120         ;;
 121   hppa-*)
 122         sysdeps_dir=pa
 123         libgcj_interpreter=yes
 124         enable_hash_synchronization_default=yes
 125         ;;
 126   powerpc64*-*)
 127         sysdeps_dir=powerpc
 128         libgcj_interpreter=yes
 129         if [ x`$CC -print-multi-os-directory` = x../lib64 ]; then
 130             libgcj_flags="${libgcj_flags} -mminimal-toc"
 131         fi
 132         enable_hash_synchronization_default=yes
 133         slow_pthread_self=yes
 134         ;;
 135   powerpc*-*)
 136         sysdeps_dir=powerpc
 137         libgcj_interpreter=yes
 138         enable_hash_synchronization_default=yes
 139         slow_pthread_self=yes
 140         ;;
 141   s390*-*)
 142         sysdeps_dir=s390
 143         libgcj_interpreter=yes
 144         DIVIDESPEC=-fno-use-divide-subroutine
 145         enable_hash_synchronization_default=yes
 146         ;;
 147   sparc*-*)
 148         libgcj_interpreter=yes
 149         ;;
 150   ia64-*)
 151         sysdeps_dir=ia64
 152         libgcj_flags="${libgcj_flags} -funwind-tables"
 153         libgcj_interpreter=yes
 154         enable_hash_synchronization_default=yes
 155         ;;
 156   sh-* | sh[34]*-*)
 157         sysdeps_dir=sh
 158         libgcj_flags="${libgcj_flags} -mieee"
 159         libgcj_interpreter=yes
 160         enable_hash_synchronization_default=yes
 161         IEEESPEC=-mieee
 162         ;;
 163 esac
 164
 165 # This case statement supports generic port properties and may refine
 166 # the above per-CPU defaults.  Note: If your OS implements
 167 # MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal
 168 # here.
 169 case "${host}" in
 170   i[34567]86*-linux* | \
 171   powerpc*-linux* | \
 172   alpha*-linux* | \
 173   s390*-linux* | \
 174   sparc*-linux* | \
 175   ia64-* | \
 176   x86_64*-linux* | \
 177   hppa*-linux* | \
 178   sh-linux* | sh[34]*-linux*)
 179         can_unwind_signal=yes
 180         libgcj_ld_symbolic='-Wl,-Bsymbolic'
 181         if test x$slow_pthread_self = xyes \
 182            && test x$cross_compiling != xyes; then
 183           cat > conftest.c <<EOF
 184 #define _GNU_SOURCE 1
 185 #include <pthread.h>
 186 #include <stdlib.h>
 187 #include <sys/resource.h>
 188 #include <limits.h>
 189
 190 void *
 191 tf (void *arg __attribute__ ((unused)))
 192 {
 193   pthread_attr_t a;
 194   size_t s;
 195
 196   if (pthread_getattr_np (pthread_self (), &a)
 197       || pthread_attr_getstacksize (&a, &s)
 198       || s > 2 * PTHREAD_STACK_MIN)
 199     exit (1);
 200   exit (0);
 201 }
 202
 203 int
 204 main (int argc, char **argv)
 205 {
 206   pthread_t p;
 207   void *ret;
 208   struct rlimit r;
 209
 210   if (argc == 2)
 211     {
 212       r.rlim_cur = 2 * PTHREAD_STACK_MIN;
 213       r.rlim_max = 2 * PTHREAD_STACK_MIN;
 214       if (setrlimit (RLIMIT_STACK, &r))
 215         exit (1);
 216       execl (argv[1], argv[0], NULL);
 217       exit (1);
 218     }
 219
 220   if (pthread_create (&p, NULL, tf, NULL)
 221       || pthread_join (p, &ret))
 222     exit (1);
 223   exit (1);
 224 }
 225 EOF
 226           $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \
 227           ./conftest ./conftest && slow_pthread_self=
 228           rm -f conftest conftest.c
 229         fi
 230         ;;
 231   mips*-*-linux* )
 232         sysdeps_dir=mips
 233         can_unwind_signal=yes
 234         DIVIDESPEC=-fno-use-divide-subroutine
 235         case "${host}" in
 236             mipsel*-linux* | mipsisa32el*-linux*)
 237                 enable_hash_synchronization_default=yes
 238                 disable_dladdr=yes
 239             ;;
 240         esac
 241         ;;
 242   powerpc*-*-darwin*)
 243         enable_hash_synchronization_default=yes
 244         slow_pthread_self=
 245         can_unwind_signal=yes
 246         ;;
 247   *-*-freebsd*)
 248         slow_pthread_self=
 249         ;;
 250   *-mingw*)
 251         # FIXME: win32_exception_handler( ) in win32.cc does not do the
 252         # right stuff yet w.r.t. SEH. Live with the following for now.
 253         can_unwind_signal=no
 254         CHECKREFSPEC=-fcheck-references
 255         DIVIDESPEC=-fuse-divide-subroutine
 256         ;;
 257   *-cygwin*)
 258         # The cygwin linker doesn't do 8-byte alignment by default, so
 259         # disable hash synchronization for now.
 260         enable_hash_synchronization_default=no
 261         slow_pthread_self=
 262         ;;
 263 esac
 264
 265 case "${host}" in
 266   *-cygwin* | *-mingw*)
 267         fallback_backtrace_h=sysdep/i386/backtrace.h
 268   ;;
 269 esac
 270
 271
 272 libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"
 273 libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"
 274 libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"