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_sublib_ltflags  Special Libtool flags to use when building sublibs
  22 #   libgcj_sublib_core_extra_deps  Extra dependencies to add to core sublib
  23 #   libgcj_interpreter  If the bytecode interpreter supports this platform.
  24 #   enable_java_net_default  If java.net native code should be enabled by
  25 #                            default.
  26 #   enable_hash_synchronization_default  If hash synchronization should be
  27 #                                        enabled by default.
  28 #   enable_libgcj_sublibs_default  Whether to build libgcj as a bunch of
  29 #                                  separate shared libraries or in one
  30 #                                  monolithic one.
  31 #   sysdeps_dir         Directory containing system-dependent headers
  32 #   slow_pthread_self   The synchronization code should try to avoid
  33 #                       pthread_self calls by caching thread IDs in a hashtable
  34 #   can_unwind_signal   Set to "yes" if the EH unwinder supports throwing
  35 #                       from a signal handler.
  36 #   fallback_backtrace_h  Header to use for fallback backtrace implementation
  37 #                         (only for targets that don't support DWARF2 unwind)
  38 #   descriptor_h        Header to use for looking past function descriptors
  39 #   use_libgcj_bc       Whether to build a "libgcj-bc" library for BC-ABI
  40 #                       binaries to link against.
  41
  42 libgcj_flags=
  43 libgcj_cflags=
  44 libgcj_cxxflags=
  45 libgcj_javaflags=
  46 libgcj_sublib_ltflags=
  47 libgcj_sublib_core_extra_deps=
  48 libgcj_interpreter=
  49 enable_java_net_default=yes
  50 enable_hash_synchronization_default=no
  51 enable_libgcj_sublibs_default=no
  52 sysdeps_dir=generic
  53 slow_pthread_self=
  54 can_unwind_signal=no
  55 fallback_backtrace_h=sysdep/generic/backtrace.h
  56
  57 case "${target_optspace}:${host}" in
  58   yes:*)
  59     libgcj_flags="${libgcj_flags} -Os"
  60     ;;
  61   :m32r-* | :d10v-* | :d30v-*)
  62     libgcj_flags="${libgcj_flags} -Os"
  63     ;;
  64   no:* | :*)
  65     # Nothing.
  66     ;;
  67 esac
  68
  69 AM_RUNTESTFLAGS=
  70
  71 # Set any host dependent compiler flags.
  72 # THIS TABLE IS SORTED.  KEEP IT THAT WAY.
  73
  74 echo "$target"
  75
  76 DIVIDESPEC=-fuse-divide-subroutine
  77 EXCEPTIONSPEC=-fnon-call-exceptions
  78 CHECKREFSPEC=
  79 BACKTRACESPEC=
  80 ATOMICSPEC=
  81
  82 # This case statement supports per-CPU defaults.
  83 case "${host}" in
  84   aarch64*-linux*)
  85         libgcj_interpreter=yes
  86         sysdeps_dir=aarch64
  87         ATOMICSPEC=-fuse-atomic-builtins
  88         ;;
  89   arm*-elf)
  90         with_libffi_default=no
  91         PROCESS=Ecos
  92         FILE=Posix
  93         CHECKREFSPEC=-fcheck-references
  94         EXCEPTIONSPEC=
  95         enable_java_net_default=no
  96         enable_getenv_properties_default=no
  97         enable_main_args_default=no
  98         sysdeps_dir=arm
  99         ;;
 100   arm*-linux*)
 101         libgcj_interpreter=yes
 102         sysdeps_dir=arm
 103         fallback_backtrace_h=sysdep/arm/backtrace.h
 104         libgcj_cxxflags=-Wno-abi
 105         ATOMICSPEC=-fuse-atomic-builtins
 106         # Work around a strange libtool feature that causes libraries
 107         # to be linked with libgcc_s but not libgcc.
 108         LDFLAGS="${LDFLAGS} -Wl,-lgcc"
 109         ;;
 110   mips-tx39-*|mipstx39-unknown-*)
 111         libgcj_flags="${libgcj_flags} -G 0"
 112         LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"
 113         AM_RUNTESTFLAGS="--target_board=jmr3904-sim"
 114         # Use "Ecos" processes since they are a no-op.
 115         PROCESS=Ecos
 116         FILE=Posix
 117         enable_java_net_default=no
 118         enable_getenv_properties_default=no
 119         ;;
 120   mips*-*)
 121         libgcj_interpreter=yes
 122         ;;
 123   i686-*|i586-*|i486-*|i386-*)
 124         sysdeps_dir=i386
 125         # With -fomit-frame-pointer -maccumulate-outgoing-args (implied),
 126         # the .text section of libgcj.so is 30k larger, and the .eh_frame
 127         # section is 1.4M smaller.
 128         libgcj_flags="${libgcj_flags} -ffloat-store -fomit-frame-pointer"
 129         # On Solaris we have defined 'sun' which later conflicts with
 130         # namespace usage. So to work this away we use the below undefine.
 131         libgcj_flags="${libgcj_flags} -Usun"
 132         libgcj_interpreter=yes
 133         libgcj_cxxflags=
 134         libgcj_cflags=
 135         DIVIDESPEC=-fno-use-divide-subroutine
 136         enable_hash_synchronization_default=yes
 137         slow_pthread_self=yes
 138         ;;
 139   x86_64-*)
 140         sysdeps_dir=i386
 141         # For 64-bit we always use SSE registers for arithmetic,
 142         # which doesn't have the extra precision problems of the fpu.
 143         # But be careful about 32-bit multilibs.
 144         case " $CC " in
 145         *" -m32 "*)
 146                 libgcj_flags="${libgcj_flags} -ffloat-store" ;;
 147         esac
 148         libgcj_flags="${libgcj_flags} -fomit-frame-pointer"
 149         # On Solaris we have defined 'sun' which later conflicts with
 150         # namespace usage. So to work this away we use the below undefine.
 151         libgcj_flags="${libgcj_flags} -Usun"
 152         libgcj_cxxflags=
 153         libgcj_cflags=
 154         DIVIDESPEC=-fno-use-divide-subroutine
 155         enable_hash_synchronization_default=yes
 156         slow_pthread_self=yes
 157         libgcj_interpreter=yes
 158         ;;
 159   alpha*-*)
 160         sysdeps_dir=alpha
 161         libgcj_flags="${libgcj_flags} -mieee"
 162         libgcj_interpreter=yes
 163         enable_hash_synchronization_default=yes
 164         IEEESPEC=-mieee
 165         ;;
 166   hppa*-*)
 167         sysdeps_dir=pa
 168         libgcj_interpreter=yes
 169         enable_hash_synchronization_default=no
 170         ;;
 171   m68k-*)
 172         sysdeps_dir=m68k
 173         libgcj_interpreter=yes
 174         ;;
 175   powerpc64*-*)
 176         sysdeps_dir=powerpc
 177         libgcj_interpreter=yes
 178         if [ x`$CC -print-multi-os-directory` = x../lib64 ]; then
 179             libgcj_flags="${libgcj_flags} -mminimal-toc"
 180         fi
 181         enable_hash_synchronization_default=yes
 182         slow_pthread_self=yes
 183         ;;
 184   powerpc*-*)
 185         sysdeps_dir=powerpc
 186         libgcj_interpreter=yes
 187         enable_hash_synchronization_default=yes
 188         slow_pthread_self=yes
 189         ;;
 190   s390*-*)
 191         sysdeps_dir=s390
 192         libgcj_interpreter=yes
 193         DIVIDESPEC=-fno-use-divide-subroutine
 194         enable_hash_synchronization_default=yes
 195         ;;
 196   sparc*-*)
 197         sysdeps_dir=sparc
 198         # On Solaris we have defined 'sun' which later conflicts with
 199         # namespace usage. So to work this away we use the below undefine.
 200         libgcj_flags="${libgcj_flags} -Usun"
 201         libgcj_interpreter=yes
 202         ;;
 203   ia64-*)
 204         sysdeps_dir=ia64
 205         libgcj_flags="${libgcj_flags} -funwind-tables"
 206         libgcj_interpreter=yes
 207         enable_hash_synchronization_default=yes
 208         ;;
 209   sh-* | sh[34]*-*)
 210         sysdeps_dir=sh
 211         libgcj_flags="${libgcj_flags} -mieee"
 212         libgcj_interpreter=yes
 213         enable_hash_synchronization_default=yes
 214         IEEESPEC=-mieee
 215         ;;
 216 esac
 217
 218 # This case statement supports generic port properties and may refine
 219 # the above per-CPU defaults.  Note: If your OS implements
 220 # MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal
 221 # here.
 222 case "${host}" in
 223   i[34567]86*-linux* | \
 224   powerpc*-linux* | \
 225   alpha*-linux* | \
 226   s390*-linux* | \
 227   sparc*-linux* | \
 228   ia64-* | \
 229   x86_64*-linux* | \
 230   hppa*-linux* | \
 231   m68k*-linux* | \
 232   sh-linux* | sh[34]*-linux*)
 233         can_unwind_signal=yes
 234         libgcj_ld_symbolic='-Wl,-Bsymbolic'
 235         if test x$slow_pthread_self = xyes \
 236            && test x$cross_compiling != xyes; then
 237           cat > conftest.c <<EOF
 238 #define _GNU_SOURCE 1
 239 #include <pthread.h>
 240 #include <stdlib.h>
 241 #include <sys/resource.h>
 242 #include <limits.h>
 243
 244 void *
 245 tf (void *arg __attribute__ ((unused)))
 246 {
 247   pthread_attr_t a;
 248   size_t s;
 249
 250   if (pthread_getattr_np (pthread_self (), &a)
 251       || pthread_attr_getstacksize (&a, &s)
 252       || s > 2 * PTHREAD_STACK_MIN)
 253     exit (1);
 254   exit (0);
 255 }
 256
 257 int
 258 main (int argc, char **argv)
 259 {
 260   pthread_t p;
 261   void *ret;
 262   struct rlimit r;
 263
 264   if (argc == 2)
 265     {
 266       r.rlim_cur = 2 * PTHREAD_STACK_MIN;
 267       r.rlim_max = 2 * PTHREAD_STACK_MIN;
 268       if (setrlimit (RLIMIT_STACK, &r))
 269         exit (1);
 270       execl (argv[1], argv[0], NULL);
 271       exit (1);
 272     }
 273
 274   if (pthread_create (&p, NULL, tf, NULL)
 275       || pthread_join (p, &ret))
 276     exit (1);
 277   exit (1);
 278 }
 279 EOF
 280           $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \
 281           ./conftest ./conftest && slow_pthread_self=
 282           rm -f conftest conftest.c
 283         fi
 284         ;;
 285   i[34567]86*-kfreebsd*-gnu | x86_64*-kfreebsd*-gnu)
 286         libgcj_ld_symbolic='-Wl,-Bsymbolic'
 287         slow_pthread_self=
 288         ;;
 289   i[34567]86-*-solaris2.1[0-9]* )
 290         sysdeps_dir=i386
 291         DIVIDESPEC=-f%{m32:no-}%{!m32:%{!m64:no-}}%{m64:}use-divide-subroutine
 292         ;;
 293   x86_64-*-solaris2.1[0-9]* )
 294         sysdeps_dir=i386
 295         DIVIDESPEC=-f%{m32:no-}use-divide-subroutine
 296         ;;
 297   aarch64*-linux* )
 298         slow_pthread_self=no
 299         can_unwind_signal=no
 300         CHECKREFSPEC=-fcheck-references
 301         DIVIDESPEC=-fuse-divide-subroutine
 302         ;;
 303   arm*-linux* )
 304         slow_pthread_self=no
 305         can_unwind_signal=no
 306         CHECKREFSPEC=-fcheck-references
 307         DIVIDESPEC=-fuse-divide-subroutine
 308         ;;
 309   mips*-*-linux* )
 310         sysdeps_dir=mips
 311         can_unwind_signal=yes
 312         DIVIDESPEC=-fno-use-divide-subroutine
 313         enable_hash_synchronization_default=yes
 314         ;;
 315   powerpc*-*-darwin*)
 316         enable_hash_synchronization_default=yes
 317         slow_pthread_self=
 318         can_unwind_signal=yes
 319         ;;
 320   i?86-*-darwin*)
 321         enable_hash_synchronization_default=yes
 322         slow_pthread_self=
 323         can_unwind_signal=no
 324         ;;
 325   i?86-*-darwin[912]*)
 326         can_unwind_signal=yes
 327         DIVIDESPEC=-f%{m32:no-}%{!m32:%{!m64:no-}}%{m64:}use-divide-subroutine
 328         ;;
 329   x86_64-*-darwin[912]*)
 330         enable_hash_synchronization_default=yes
 331         slow_pthread_self=
 332         can_unwind_signal=yes
 333         DIVIDESPEC=-fuse-divide-subroutine
 334         CHECKREFSPEC=-fcheck-references
 335         ;;
 336   i?86-*-solaris2* | x86_64-*-solaris2.1[0-9]*)
 337         can_unwind_signal=yes
 338         ;;
 339   *-*-freebsd*)
 340         slow_pthread_self=
 341         ;;
 342   *-mingw*)
 343         libgcj_flags="${libgcj_flags} -fno-omit-frame-pointer"
 344         # FIXME: win32_exception_handler( ) in win32.cc does not do the
 345         # right stuff yet w.r.t. SEH. Live with the following for now.
 346         can_unwind_signal=no
 347         CHECKREFSPEC=-fcheck-references
 348         DIVIDESPEC=-fuse-divide-subroutine
 349         ;;
 350   *-cygwin*)
 351         # The cygwin linker doesn't do 8-byte alignment by default, so
 352         # disable hash synchronization for now.
 353         enable_hash_synchronization_default=no
 354         slow_pthread_self=
 355         ;;
 356   hppa*-hp-hpux11.*)
 357         slow_pthread_self=no
 358         can_unwind_signal=yes
 359         DIVIDESPEC=-fuse-divide-subroutine
 360         ;;
 361   sparc*-sun-solaris2.*)
 362         slow_pthread_self=
 363         can_unwind_signal=yes
 364         ;;
 365 esac
 366
 367 case "${host}" in
 368   *-cygwin* | *-mingw*)
 369         fallback_backtrace_h=sysdep/i386/backtrace.h
 370         # We need a frame pointer on Windows, so override BACKTRACESPEC
 371         BACKTRACESPEC=
 372         # Win32 DLLs are limited to 64k exported symbols each.
 373         enable_libgcj_sublibs_default=yes
 374         libgcj_sublib_ltflags='$(lt_host_flags) \
 375             -Wl,-u,__ZN3org4ietf4jgss10GSSManagerC1Ev,-L..,-lgcj-noncore-dummy'
 376         libgcj_sublib_core_extra_deps=libgcj-noncore-dummy.dll.a
 377   ;;
 378 esac
 379
 380 case "${host}" in
 381   ia64-*)
 382         descriptor_h=sysdep/descriptor-y.h
 383         ;;
 384
 385   hppa*64*-*-hpux*)
 386         descriptor_h=sysdep/pa/descriptor-pa64-hpux.h
 387         ;;
 388
 389   hppa*-*-hpux*)
 390         descriptor_h=sysdep/pa/descriptor-pa32-hpux.h
 391         ;;
 392
 393   hppa*-*)
 394         descriptor_h=sysdep/pa/descriptor.h
 395         ;;
 396
 397   rs6000-* | powerpc*-*)
 398         descriptor_h=sysdep/powerpc/descriptor.h
 399         ;;
 400
 401   *)
 402         descriptor_h=sysdep/descriptor-n.h
 403         ;;
 404 esac
 405
 406 case "${host}" in
 407   *linux*|*-kfreebsd*-gnu|*-gnu*)
 408     use_libgcj_bc=yes
 409   ;;
 410   *)
 411     use_libgcj_bc=no
 412   ;;
 413 esac
 414
 415 libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"
 416 libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"
 417 libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"