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.
8 # This shell script should be invoked as
10 # If it encounters an error, it will exit with a message.
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", "")
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
24 # enable_hash_synchronization_default If hash synchronization should be
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 # fallback_backtrace_h Header to use for fallback backtrace implementation
32 # (only for targets that don't support DWARF2 unwind)
33 # descriptor_h Header to use for looking past function descriptors
40 enable_java_net_default=yes
41 enable_hash_synchronization_default=no
45 fallback_backtrace_h=sysdep/generic/backtrace.h
47 case "${target_optspace}:${host}" in
49 libgcj_flags="${libgcj_flags} -Os"
51 :m32r-* | :d10v-* | :d30v-*)
52 libgcj_flags="${libgcj_flags} -Os"
61 # Set any host dependent compiler flags.
62 # THIS TABLE IS SORTED. KEEP IT THAT WAY.
66 DIVIDESPEC=-fuse-divide-subroutine
67 EXCEPTIONSPEC=-fnon-call-exceptions
71 # This case statement supports per-CPU defaults.
73 arm*-elf | strongarm*-elf | xscale*-elf)
74 with_libffi_default=no
77 CHECKREFSPEC=-fcheck-references
79 enable_java_net_default=no
80 enable_getenv_properties_default=no
81 enable_main_args_default=no
83 mips-tx39-*|mipstx39-unknown-*)
84 libgcj_flags="${libgcj_flags} -G 0"
85 LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"
86 AM_RUNTESTFLAGS="--target_board=jmr3904-sim"
87 # Use "Ecos" processes since they are a no-op.
90 enable_java_net_default=no
91 enable_getenv_properties_default=no
93 i686-*|i586-*|i486-*|i386-*)
95 # With -fomit-frame-pointer -maccumulate-outgoing-args (implied),
96 # the .text section of libgcj.so is 30k larger, and the .eh_frame
97 # section is 1.4M smaller.
98 libgcj_flags="${libgcj_flags} -ffloat-store -fomit-frame-pointer"
99 libgcj_interpreter=yes
102 DIVIDESPEC=-fno-use-divide-subroutine
103 enable_hash_synchronization_default=yes
104 slow_pthread_self=yes
108 # For 64-bit we always use SSE registers for arithmetic,
109 # which doesn't have the extra precision problems of the fpu.
110 # But be careful about 32-bit multilibs.
113 libgcj_flags="${libgcj_flags} -ffloat-store" ;;
115 libgcj_flags="${libgcj_flags} -fomit-frame-pointer"
118 DIVIDESPEC=-f%{m32:no-}use-divide-subroutine
119 enable_hash_synchronization_default=yes
120 slow_pthread_self=yes
121 libgcj_interpreter=yes
125 libgcj_flags="${libgcj_flags} -mieee"
126 libgcj_interpreter=yes
127 enable_hash_synchronization_default=yes
132 libgcj_interpreter=yes
133 enable_hash_synchronization_default=yes
137 libgcj_interpreter=yes
138 if [ x`$CC -print-multi-os-directory` = x../lib64 ]; then
139 libgcj_flags="${libgcj_flags} -mminimal-toc"
141 enable_hash_synchronization_default=yes
142 slow_pthread_self=yes
146 libgcj_interpreter=yes
147 enable_hash_synchronization_default=yes
148 slow_pthread_self=yes
152 libgcj_interpreter=yes
153 DIVIDESPEC=-fno-use-divide-subroutine
154 enable_hash_synchronization_default=yes
157 libgcj_interpreter=yes
161 libgcj_flags="${libgcj_flags} -funwind-tables"
162 libgcj_interpreter=yes
163 enable_hash_synchronization_default=yes
167 libgcj_flags="${libgcj_flags} -mieee"
168 libgcj_interpreter=yes
169 enable_hash_synchronization_default=yes
174 # This case statement supports generic port properties and may refine
175 # the above per-CPU defaults. Note: If your OS implements
176 # MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal
179 i[34567]86*-linux* | \
187 sh-linux* | sh[34]*-linux*)
188 can_unwind_signal=yes
189 libgcj_ld_symbolic='-Wl,-Bsymbolic'
190 if test x$slow_pthread_self = xyes \
191 && test x$cross_compiling != xyes; then
192 cat > conftest.c <<EOF
193 #define _GNU_SOURCE 1
196 #include <sys/resource.h>
200 tf (void *arg __attribute__ ((unused)))
205 if (pthread_getattr_np (pthread_self (), &a)
206 || pthread_attr_getstacksize (&a, &s)
207 || s > 2 * PTHREAD_STACK_MIN)
213 main (int argc, char **argv)
221 r.rlim_cur = 2 * PTHREAD_STACK_MIN;
222 r.rlim_max = 2 * PTHREAD_STACK_MIN;
223 if (setrlimit (RLIMIT_STACK, &r))
225 execl (argv[1], argv[0], NULL);
229 if (pthread_create (&p, NULL, tf, NULL)
230 || pthread_join (p, &ret))
235 $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \
236 ./conftest ./conftest && slow_pthread_self=
237 rm -f conftest conftest.c
240 i[34567]86-*-solaris2.1[0-9]* )
242 DIVIDESPEC=-f%{m32:no-}%{!m32:%{!m64:no-}}%{m64:}use-divide-subroutine
246 can_unwind_signal=yes
247 DIVIDESPEC=-fno-use-divide-subroutine
249 mipsel*-linux* | mipsisa32el*-linux*)
250 enable_hash_synchronization_default=yes
255 enable_hash_synchronization_default=yes
257 can_unwind_signal=yes
263 libgcj_flags="${libgcj_flags} -fno-omit-frame-pointer"
264 # FIXME: win32_exception_handler( ) in win32.cc does not do the
265 # right stuff yet w.r.t. SEH. Live with the following for now.
267 CHECKREFSPEC=-fcheck-references
268 DIVIDESPEC=-fuse-divide-subroutine
271 # The cygwin linker doesn't do 8-byte alignment by default, so
272 # disable hash synchronization for now.
273 enable_hash_synchronization_default=no
279 *-cygwin* | *-mingw*)
280 fallback_backtrace_h=sysdep/i386/backtrace.h
281 # We need a frame pointer on Windows, so override BACKTRACESPEC
288 descriptor_h=sysdep/descriptor-y.h
292 descriptor_h=sysdep/pa/descriptor.h
295 rs6000-* | powerpc*-*)
296 descriptor_h=sysdep/powerpc/descriptor.h
300 descriptor_h=sysdep/descriptor-n.h
304 libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"
305 libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"
306 libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"