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="${libgcj_flags} -ffloat-store -fno-omit-frame-pointer"
  94         libgcj_interpreter=yes
  95         libgcj_cxxflags=
  96         libgcj_cflags=
  97         DIVIDESPEC=-fno-use-divide-subroutine
  98         enable_hash_synchronization_default=yes
  99         slow_pthread_self=yes
 100         ;;
 101   x86_64-*)
 102         sysdeps_dir=x86-64
 103         libgcj_flags="${libgcj_flags} -ffloat-store -fno-omit-frame-pointer"
 104         libgcj_cxxflags=
 105         libgcj_cflags=
 106         DIVIDESPEC=-f%{m32:no-}use-divide-subroutine
 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="${libgcj_flags} -mieee"
 114         libgcj_interpreter=yes
 115         enable_hash_synchronization_default=yes
 116         IEEESPEC=-mieee
 117         ;;
 118   hppa-*)
 119         sysdeps_dir=pa
 120         libgcj_interpreter=yes
 121         enable_hash_synchronization_default=yes
 122         ;;
 123   powerpc64*-*)
 124         sysdeps_dir=powerpc
 125         libgcj_interpreter=yes
 126         if [ x`$CC -print-multi-os-directory` = x../lib64 ]; then
 127             libgcj_flags="${libgcj_flags} -mminimal-toc"
 128         fi
 129         enable_hash_synchronization_default=yes
 130         slow_pthread_self=yes
 131         ;;
 132   powerpc*-*)
 133         sysdeps_dir=powerpc
 134         libgcj_interpreter=yes
 135         enable_hash_synchronization_default=yes
 136         slow_pthread_self=yes
 137         ;;
 138   s390*-*)
 139         sysdeps_dir=s390
 140         libgcj_interpreter=yes
 141         enable_hash_synchronization_default=yes
 142         ;;
 143   sparc*-*)
 144         libgcj_interpreter=yes
 145         ;;
 146   ia64-*)
 147         sysdeps_dir=ia64
 148         libgcj_flags="${libgcj_flags} -funwind-tables"
 149         libgcj_interpreter=yes
 150         enable_hash_synchronization_default=yes
 151         ;;
 152   sh-* | sh[34]*-*)
 153         sysdeps_dir=sh
 154         libgcj_flags="${libgcj_flags} -mieee"
 155         libgcj_interpreter=yes
 156         enable_hash_synchronization_default=yes
 157         ;;
 158 esac
 159
 160 # This case statement supports generic port properties and may refine
 161 # the above per-CPU defaults.  Note: If your OS implements
 162 # MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal
 163 # here.
 164 case "${host}" in
 165   i[34567]86*-linux* | \
 166   powerpc*-linux* | \
 167   alpha*-linux* | \
 168   s390*-linux* | \
 169   sparc*-linux* | \
 170   ia64-* | \
 171   x86_64*-linux* | \
 172   sh-linux* | sh[34]*-linux*)
 173         can_unwind_signal=yes
 174         if test x$slow_pthread_self = xyes \
 175            && test x$cross_compiling != xyes; then
 176           cat > conftest.c <<EOF
 177 #define _GNU_SOURCE 1
 178 #include <pthread.h>
 179 #include <stdlib.h>
 180 #include <sys/resource.h>
 181 #include <limits.h>
 182
 183 void *
 184 tf (void *arg __attribute__ ((unused)))
 185 {
 186   pthread_attr_t a;
 187   size_t s;
 188
 189   if (pthread_getattr_np (pthread_self (), &a)
 190       || pthread_attr_getstacksize (&a, &s)
 191       || s > 2 * PTHREAD_STACK_MIN)
 192     exit (1);
 193   exit (0);
 194 }
 195
 196 int
 197 main (int argc, char **argv)
 198 {
 199   pthread_t p;
 200   void *ret;
 201   struct rlimit r;
 202
 203   if (argc == 2)
 204     {
 205       r.rlim_cur = 2 * PTHREAD_STACK_MIN;
 206       r.rlim_max = 2 * PTHREAD_STACK_MIN;
 207       if (setrlimit (RLIMIT_STACK, &r))
 208         exit (1);
 209       execl (argv[1], argv[0], NULL);
 210       exit (1);
 211     }
 212
 213   if (pthread_create (&p, NULL, tf, NULL)
 214       || pthread_join (p, &ret))
 215     exit (1);
 216   exit (1);
 217 }
 218 EOF
 219           $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \
 220           ./conftest ./conftest && slow_pthread_self=
 221           rm -f conftest conftest.c
 222         fi
 223         ;;
 224   mips*-*-linux* )
 225         sysdeps_dir=mips
 226         can_unwind_signal=yes
 227         libgcj_flags="${libgcj_flags} -mxgot"
 228         case "${host}" in
 229             mipsel*-linux* | mipsisa32el*-linux*)
 230                 enable_hash_synchronization_default=yes
 231                 disable_dladdr=yes
 232             ;;
 233         esac
 234         ;;
 235   *-*-darwin*)
 236         enable_hash_synchronization_default=no
 237         slow_pthread_self=
 238         can_unwind_signal=no
 239         ;;
 240   *-*-freebsd*)
 241         slow_pthread_self=
 242         ;;
 243   *-mingw*)
 244         # FIXME: win32_exception_handler( ) in win32.cc does not do the
 245         # right stuff yet w.r.t. SEH. Live with the following for now.
 246         can_unwind_signal=no
 247         CHECKREFSPEC=-fcheck-references
 248         DIVIDESPEC=-fuse-divide-subroutine
 249         ;;
 250   *-cygwin*)
 251         # The cygwin linker doesn't do 8-byte alignment by default, so
 252         # disable hash synchronization for now.
 253         enable_hash_synchronization_default=no
 254         slow_pthread_self=
 255         ;;
 256 esac
 257
 258 libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"
 259 libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"
 260 libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"