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
  34 libgcj_flags=
  35 libgcj_cflags=
  36 libgcj_cxxflags=
  37 libgcj_javaflags=
  38 libgcj_interpreter=
  39 enable_java_net_default=yes
  40 enable_hash_synchronization_default=no
  41 sysdeps_dir=generic
  42 slow_pthread_self=
  43 can_unwind_signal=no
  44 disable_dladdr=
  45
  46 case "${target_optspace}:${host}" in
  47   yes:*)
  48     libgcj_flags="${libgcj_flags} -Os"
  49     ;;
  50   :m32r-* | :d10v-* | :d30v-*)
  51     libgcj_flags="${libgcj_flags} -Os"
  52     ;;
  53   no:* | :*)
  54     # Nothing.
  55     ;;
  56 esac
  57
  58 AM_RUNTESTFLAGS=
  59
  60 # Set any host dependent compiler flags.
  61 # THIS TABLE IS SORTED.  KEEP IT THAT WAY.
  62
  63 echo "$target"
  64
  65 DIVIDESPEC=-fuse-divide-subroutine
  66 EXCEPTIONSPEC=-fnon-call-exceptions
  67 CHECKREFSPEC=
  68
  69 # This case statement supports per-CPU defaults.
  70 case "${host}" in
  71   arm*-elf | strongarm*-elf | xscale*-elf)
  72         with_libffi_default=no
  73         PROCESS=Ecos
  74         FILE=Posix
  75         CHECKREFSPEC=-fcheck-references
  76         EXCEPTIONSPEC=
  77         enable_java_net_default=no
  78         enable_getenv_properties_default=no
  79         enable_main_args_default=no
  80         ;;
  81   mips-tx39-*|mipstx39-unknown-*)
  82         libgcj_flags="${libgcj_flags} -G 0"
  83         LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"
  84         AM_RUNTESTFLAGS="--target_board=jmr3904-sim"
  85         # Use "Ecos" processes since they are a no-op.
  86         PROCESS=Ecos
  87         FILE=Posix
  88         enable_java_net_default=no
  89         enable_getenv_properties_default=no
  90         ;;
  91   i686-*|i586-*|i486-*|i386-*)
  92         sysdeps_dir=i386
  93         libgcj_flags="${libgcj_flags} -ffloat-store"
  94         libgcj_interpreter=yes
  95         libgcj_cxxflags=
  96         libgcj_cflags=
  97         DIVIDESPEC=-fno-use-divide-subroutine
  98         enable_hash_synchronization_default=yes
  99         slow_pthread_self=yes
 100         ;;
 101   x86_64-*)
 102         CHECKREFSPEC="%{m32:-fcheck-references}"
 103         sysdeps_dir=x86-64
 104         libgcj_flags="${libgcj_flags} -ffloat-store -fno-omit-frame-pointer"
 105         libgcj_cxxflags=
 106         libgcj_cflags=
 107         enable_hash_synchronization_default=yes
 108         slow_pthread_self=yes
 109         libgcj_interpreter=yes
 110         ;;
 111   alpha*-*)
 112         sysdeps_dir=alpha
 113         libgcj_flags="${libgcj_flags} -mieee"
 114         libgcj_interpreter=yes
 115         enable_hash_synchronization_default=yes
 116         IEEESPEC=-mieee
 117         ;;
 118   powerpc64*-*)
 119         with_libffi_default=yes
 120         libgcj_interpreter=yes
 121         libgcj_flags="${libgcj_flags} -mminimal-toc"
 122         # this may not be correct
 123         sysdeps_dir=powerpc
 124         enable_hash_synchronization_default=yes
 125         slow_pthread_self=yes
 126         ;;
 127   powerpc*-*)
 128         sysdeps_dir=powerpc
 129         libgcj_interpreter=yes
 130         enable_hash_synchronization_default=yes
 131         slow_pthread_self=yes
 132         ;;
 133   s390*-*)
 134         sysdeps_dir=s390
 135         libgcj_interpreter=yes
 136         enable_hash_synchronization_default=yes
 137         ;;
 138   sparc*-*)
 139         libgcj_interpreter=yes
 140         ;;
 141   ia64-*)
 142         sysdeps_dir=ia64
 143         libgcj_flags="${libgcj_flags} -funwind-tables"
 144         libgcj_interpreter=yes
 145         enable_hash_synchronization_default=yes
 146         ;;
 147   sh-* | sh[34]*-*)
 148         sysdeps_dir=sh
 149         libgcj_flags="${libgcj_flags} -mieee"
 150         libgcj_interpreter=yes
 151         enable_hash_synchronization_default=yes
 152         ;;
 153 esac
 154
 155 # This case statement supports generic port properties and may refine
 156 # the above per-CPU defaults.  Note: If your OS implements
 157 # MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal
 158 # here.
 159 case "${host}" in
 160   i[34567]86*-linux* | \
 161   powerpc*-linux* | \
 162   alpha*-linux* | \
 163   s390*-linux* | \
 164   sparc*-linux* | \
 165   ia64-* | \
 166   x86_64*-linux* | \
 167   sh-linux* | sh[34]*-linux*)
 168         can_unwind_signal=yes
 169         if test x$slow_pthread_self = xyes \
 170            && test x$cross_compiling != xyes; then
 171           cat > conftest.c <<EOF
 172 #define _GNU_SOURCE 1
 173 #include <pthread.h>
 174 #include <stdlib.h>
 175 #include <sys/resource.h>
 176 #include <limits.h>
 177
 178 void *
 179 tf (void *arg __attribute__ ((unused)))
 180 {
 181   pthread_attr_t a;
 182   size_t s;
 183
 184   if (pthread_getattr_np (pthread_self (), &a)
 185       || pthread_attr_getstacksize (&a, &s)
 186       || s > 2 * PTHREAD_STACK_MIN)
 187     exit (1);
 188   exit (0);
 189 }
 190
 191 int
 192 main (int argc, char **argv)
 193 {
 194   pthread_t p;
 195   void *ret;
 196   struct rlimit r;
 197
 198   if (argc == 2)
 199     {
 200       r.rlim_cur = 2 * PTHREAD_STACK_MIN;
 201       r.rlim_max = 2 * PTHREAD_STACK_MIN;
 202       if (setrlimit (RLIMIT_STACK, &r))
 203         exit (1);
 204       execl (argv[1], argv[0], NULL);
 205       exit (1);
 206     }
 207
 208   if (pthread_create (&p, NULL, tf, NULL)
 209       || pthread_join (p, &ret))
 210     exit (1);
 211   exit (1);
 212 }
 213 EOF
 214           $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \
 215           ./conftest ./conftest && slow_pthread_self=
 216           rm -f conftest conftest.c
 217         fi
 218         ;;
 219   mips*-*-linux* )
 220         sysdeps_dir=mips
 221         can_unwind_signal=yes
 222         libgcj_flags="${libgcj_flags} -mxgot"
 223         case "${host}" in
 224             mipsel*-linux* | mipsisa32el*-linux*)
 225                 enable_hash_synchronization_default=yes
 226                 disable_dladdr=yes
 227             ;;
 228         esac
 229         ;;
 230   *-*-darwin*)
 231         enable_hash_synchronization_default=no
 232         slow_pthread_self=
 233         can_unwind_signal=no
 234         ;;
 235   *-*-freebsd*)
 236         slow_pthread_self=
 237         ;;
 238   *-mingw*)
 239         # FIXME: win32_exception_handler( ) in win32.cc does not do the
 240         # right stuff yet w.r.t. SEH. Live with the following for now.
 241         can_unwind_signal=no
 242         CHECKREFSPEC=-fcheck-references
 243         DIVIDESPEC=-fuse-divide-subroutine
 244         ;;
 245   *-cygwin*)
 246         # The cygwin linker doesn't do 8-byte alignment by default, so
 247         # disable hash synchronization for now.
 248         enable_hash_synchronization_default=no
 249         slow_pthread_self=
 250         ;;
 251 esac
 252
 253 libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"
 254 libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"
 255 libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"