Subversion Repositories scarts

# configure.host

# This shell script handles all host based configuration for libgcj.

# It sets various shell variables based on the the host and the

# configuration options.  You can modify this shell script without

# needing to rerun autoconf.

# This shell script should be invoked as

#   . configure.host

# If it encounters an error, it will exit with a message.

# It uses the following shell variables:

#   host                The configuration host

#   host_cpu            The configuration host CPU

#   target_optspace     --enable-target-optspace ("yes", "no", "")

# It sets the following shell variables:

#   libgcj_cflags       Special CFLAGS to use when building

#   libgcj_cxxflags     Special CXXFLAGS to use when building

#   libgcj_javaflags    Special JAVAFLAGS to use when building

#   libgcj_interpreter  If the bytecode interpreter supports this platform.

#   enable_java_net_default  If java.net native code should be enabled by

#                            default.

#   enable_hash_synchronization_default  If hash synchronization should be

#                                        enabled by default.

#   sysdeps_dir         Directory containing system-dependent headers

#   slow_pthread_self   The synchronization code should try to avoid

#                       pthread_self calls by caching thread IDs in a hashtable

#   can_unwind_signal   Set to "yes" if the EH unwinder supports throwing

#                       from a signal handler.

#   fallback_backtrace_h  Header to use for fallback backtrace implementation

#                         (only for targets that don't support DWARF2 unwind)

#   descriptor_h        Header to use for looking past function descriptors

libgcj_flags=

libgcj_cflags=

libgcj_cxxflags=

libgcj_javaflags=

libgcj_interpreter=

enable_java_net_default=yes

enable_hash_synchronization_default=no

sysdeps_dir=generic

slow_pthread_self=

can_unwind_signal=no

fallback_backtrace_h=sysdep/generic/backtrace.h

case "${target_optspace}:${host}" in

  yes:*)

    libgcj_flags="${libgcj_flags} -Os"

    ;;

  :m32r-* | :d10v-* | :d30v-*)

    libgcj_flags="${libgcj_flags} -Os"

    ;;

  no:* | :*)

    # Nothing.

    ;;

esac

AM_RUNTESTFLAGS=

# Set any host dependent compiler flags.

# THIS TABLE IS SORTED.  KEEP IT THAT WAY.

echo "$target"

DIVIDESPEC=-fuse-divide-subroutine

EXCEPTIONSPEC=-fnon-call-exceptions

CHECKREFSPEC=

BACKTRACESPEC=

# This case statement supports per-CPU defaults.

case "${host}" in

  arm*-elf | strongarm*-elf | xscale*-elf)

        with_libffi_default=no

        PROCESS=Ecos

        FILE=Posix

        CHECKREFSPEC=-fcheck-references

        EXCEPTIONSPEC=

        enable_java_net_default=no

        enable_getenv_properties_default=no

        enable_main_args_default=no

        ;;

  mips-tx39-*|mipstx39-unknown-*)

        libgcj_flags="${libgcj_flags} -G 0"

        LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"

        AM_RUNTESTFLAGS="--target_board=jmr3904-sim"

        # Use "Ecos" processes since they are a no-op.

        PROCESS=Ecos

        FILE=Posix

        enable_java_net_default=no

        enable_getenv_properties_default=no

        ;;

  i686-*|i586-*|i486-*|i386-*)

        sysdeps_dir=i386

        # With -fomit-frame-pointer -maccumulate-outgoing-args (implied),

        # the .text section of libgcj.so is 30k larger, and the .eh_frame

        # section is 1.4M smaller.

        libgcj_flags="${libgcj_flags} -ffloat-store -fomit-frame-pointer"

        libgcj_interpreter=yes

        libgcj_cxxflags=

        libgcj_cflags=

        DIVIDESPEC=-fno-use-divide-subroutine

        enable_hash_synchronization_default=yes

        slow_pthread_self=yes

        ;;

  x86_64-*)

        sysdeps_dir=x86-64

        # For 64-bit we always use SSE registers for arithmetic,

        # which doesn't have the extra precision problems of the fpu.

        # But be careful about 32-bit multilibs.

        case " $CC " in

        *" -m32 "*)

                libgcj_flags="${libgcj_flags} -ffloat-store" ;;

        esac

        libgcj_flags="${libgcj_flags} -fomit-frame-pointer"

        libgcj_cxxflags=

        libgcj_cflags=

        DIVIDESPEC=-f%{m32:no-}use-divide-subroutine

        enable_hash_synchronization_default=yes

        slow_pthread_self=yes

        libgcj_interpreter=yes

        ;;

  alpha*-*)

        sysdeps_dir=alpha

        libgcj_flags="${libgcj_flags} -mieee"

        libgcj_interpreter=yes

        enable_hash_synchronization_default=yes

        IEEESPEC=-mieee

        ;;

  hppa-*)

        sysdeps_dir=pa

        libgcj_interpreter=yes

        enable_hash_synchronization_default=yes

        ;;

  powerpc64*-*)

        sysdeps_dir=powerpc

        libgcj_interpreter=yes

        if [ x`$CC -print-multi-os-directory` = x../lib64 ]; then

            libgcj_flags="${libgcj_flags} -mminimal-toc"

        fi

        enable_hash_synchronization_default=yes

        slow_pthread_self=yes

        ;;

  powerpc*-*)

        sysdeps_dir=powerpc

        libgcj_interpreter=yes

        enable_hash_synchronization_default=yes

        slow_pthread_self=yes

        ;;

  s390*-*)

        sysdeps_dir=s390

        libgcj_interpreter=yes

        DIVIDESPEC=-fno-use-divide-subroutine

        enable_hash_synchronization_default=yes

        ;;

  sparc*-*)

        libgcj_interpreter=yes

        ;;

  ia64-*)

        sysdeps_dir=ia64

        libgcj_flags="${libgcj_flags} -funwind-tables"

        libgcj_interpreter=yes

        enable_hash_synchronization_default=yes

        ;;

  sh-* | sh[34]*-*)

        sysdeps_dir=sh

        libgcj_flags="${libgcj_flags} -mieee"

        libgcj_interpreter=yes

        enable_hash_synchronization_default=yes

        IEEESPEC=-mieee

        ;;

esac

# This case statement supports generic port properties and may refine

# the above per-CPU defaults.  Note: If your OS implements

# MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal

# here.

case "${host}" in

  i[34567]86*-linux* | \

  powerpc*-linux* | \

  alpha*-linux* | \

  s390*-linux* | \

  sparc*-linux* | \

  ia64-* | \

  x86_64*-linux* | \

  hppa*-linux* | \

  sh-linux* | sh[34]*-linux*)

        can_unwind_signal=yes

        libgcj_ld_symbolic='-Wl,-Bsymbolic'

        if test x$slow_pthread_self = xyes \

           && test x$cross_compiling != xyes; then

          cat > conftest.c <

#define _GNU_SOURCE 1

#include 

#include 

#include 

#include 

void *

tf (void *arg __attribute__ ((unused)))

{

  pthread_attr_t a;

  size_t s;

  if (pthread_getattr_np (pthread_self (), &a)

      || pthread_attr_getstacksize (&a, &s)

      || s > 2 * PTHREAD_STACK_MIN)

    exit (1);

  exit (0);

}

int

main (int argc, char **argv)

{

  pthread_t p;

  void *ret;

  struct rlimit r;

  if (argc == 2)

    {

      r.rlim_cur = 2 * PTHREAD_STACK_MIN;

      r.rlim_max = 2 * PTHREAD_STACK_MIN;

      if (setrlimit (RLIMIT_STACK, &r))

        exit (1);

      execl (argv[1], argv[0], NULL);

      exit (1);

    }

  if (pthread_create (&p, NULL, tf, NULL)

      || pthread_join (p, &ret))

    exit (1);

  exit (1);

}

EOF

          $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \

          ./conftest ./conftest && slow_pthread_self=

          rm -f conftest conftest.c

        fi

        ;;

  i[34567]86-*-solaris2.1[0-9]* )

        sysdeps_dir=x86-64

        DIVIDESPEC=-f%{m32:no-}%{!m32:%{!m64:no-}}%{m64:}use-divide-subroutine

        ;;

  mips*-*-linux* )

        sysdeps_dir=mips

        can_unwind_signal=yes

        DIVIDESPEC=-fno-use-divide-subroutine

        case "${host}" in

            mipsel*-linux* | mipsisa32el*-linux*)

                enable_hash_synchronization_default=yes

            ;;

        esac

        ;;

  powerpc*-*-darwin*)

        enable_hash_synchronization_default=yes

        slow_pthread_self=

        can_unwind_signal=yes

        ;;

  *-*-freebsd*)

        slow_pthread_self=

        ;;

  *-mingw*)

        # FIXME: win32_exception_handler( ) in win32.cc does not do the

        # right stuff yet w.r.t. SEH. Live with the following for now.

        can_unwind_signal=no

        CHECKREFSPEC=-fcheck-references

        DIVIDESPEC=-fuse-divide-subroutine

        ;;

  *-cygwin*)

        # The cygwin linker doesn't do 8-byte alignment by default, so

        # disable hash synchronization for now.

        enable_hash_synchronization_default=no

        slow_pthread_self=

        ;;

esac

case "${host}" in

  *-cygwin* | *-mingw*)

        fallback_backtrace_h=sysdep/i386/backtrace.h

        # We need a frame pointer on Windows, so override BACKTRACESPEC

        BACKTRACESPEC=

  ;;

esac

case "${host}" in

  ia64-*)

        descriptor_h=sysdep/descriptor-y.h

        ;;

  hppa*-*)

        descriptor_h=sysdep/pa/descriptor.h

        ;;

  rs6000-* | powerpc*-*)

        descriptor_h=sysdep/powerpc/descriptor.h

        ;;

  *)

        descriptor_h=sysdep/descriptor-n.h

        ;;

esac

libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"

libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"

libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"