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|
# 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 <<EOF
#define _GNU_SOURCE 1
#include <pthread.h>
#include <stdlib.h>
#include <sys/resource.h>
#include <limits.h>
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}"
|
