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
34 # use_libgcj_bc Whether to build a "libgcj-bc" library for BC-ABI
35 # binaries to link against.
42 enable_java_net_default=yes
43 enable_hash_synchronization_default=no
47 fallback_backtrace_h=sysdep/generic/backtrace.h
49 case "${target_optspace}:${host}" in
51 libgcj_flags="${libgcj_flags} -Os"
53 :m32r-* | :d10v-* | :d30v-*)
54 libgcj_flags="${libgcj_flags} -Os"
63 # Set any host dependent compiler flags.
64 # THIS TABLE IS SORTED. KEEP IT THAT WAY.
68 DIVIDESPEC=-fuse-divide-subroutine
69 EXCEPTIONSPEC=-fnon-call-exceptions
74 # This case statement supports per-CPU defaults.
77 with_libffi_default=no
80 CHECKREFSPEC=-fcheck-references
82 enable_java_net_default=no
83 enable_getenv_properties_default=no
84 enable_main_args_default=no
88 libgcj_interpreter=yes
90 fallback_backtrace_h=sysdep/arm/backtrace.h
91 libgcj_cxxflags=-Wno-abi
92 ATOMICSPEC=-fuse-atomic-builtins
93 # Work around a strange libtool feature that causes libraries
94 # to be linked with libgcc_s but not libgcc.
95 LDFLAGS="${LDFLAGS} -Wl,-lgcc"
97 mips-tx39-*|mipstx39-unknown-*)
98 libgcj_flags="${libgcj_flags} -G 0"
99 LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"
100 AM_RUNTESTFLAGS="--target_board=jmr3904-sim"
101 # Use "Ecos" processes since they are a no-op.
104 enable_java_net_default=no
105 enable_getenv_properties_default=no
108 libgcj_interpreter=yes
110 i686-*|i586-*|i486-*|i386-*)
112 # With -fomit-frame-pointer -maccumulate-outgoing-args (implied),
113 # the .text section of libgcj.so is 30k larger, and the .eh_frame
114 # section is 1.4M smaller.
115 libgcj_flags="${libgcj_flags} -ffloat-store -fomit-frame-pointer"
116 # On Solaris we have defined 'sun' which later conflicts with
117 # namespace usage. So to work this away we use the below undefine.
118 libgcj_flags="${libgcj_flags} -Usun"
119 libgcj_interpreter=yes
122 DIVIDESPEC=-fno-use-divide-subroutine
123 enable_hash_synchronization_default=yes
124 slow_pthread_self=yes
128 # For 64-bit we always use SSE registers for arithmetic,
129 # which doesn't have the extra precision problems of the fpu.
130 # But be careful about 32-bit multilibs.
133 libgcj_flags="${libgcj_flags} -ffloat-store" ;;
135 libgcj_flags="${libgcj_flags} -fomit-frame-pointer"
138 DIVIDESPEC=-fno-use-divide-subroutine
139 enable_hash_synchronization_default=yes
140 slow_pthread_self=yes
141 libgcj_interpreter=yes
145 libgcj_flags="${libgcj_flags} -mieee"
146 libgcj_interpreter=yes
147 enable_hash_synchronization_default=yes
152 libgcj_interpreter=yes
153 enable_hash_synchronization_default=no
157 libgcj_interpreter=yes
161 libgcj_interpreter=yes
162 if [ x`$CC -print-multi-os-directory` = x../lib64 ]; then
163 libgcj_flags="${libgcj_flags} -mminimal-toc"
165 enable_hash_synchronization_default=yes
166 slow_pthread_self=yes
170 libgcj_interpreter=yes
171 enable_hash_synchronization_default=yes
172 slow_pthread_self=yes
176 libgcj_interpreter=yes
177 DIVIDESPEC=-fno-use-divide-subroutine
178 enable_hash_synchronization_default=yes
182 # On Solaris we have defined 'sun' which later conflicts with
183 # namespace usage. So to work this away we use the below undefine.
184 libgcj_flags="${libgcj_flags} -Usun"
185 libgcj_interpreter=yes
189 libgcj_flags="${libgcj_flags} -funwind-tables"
190 libgcj_interpreter=yes
191 enable_hash_synchronization_default=yes
195 libgcj_flags="${libgcj_flags} -mieee"
196 libgcj_interpreter=yes
197 enable_hash_synchronization_default=yes
202 # This case statement supports generic port properties and may refine
203 # the above per-CPU defaults. Note: If your OS implements
204 # MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal
207 i[34567]86*-linux* | \
216 sh-linux* | sh[34]*-linux*)
217 can_unwind_signal=yes
218 libgcj_ld_symbolic='-Wl,-Bsymbolic'
219 if test x$slow_pthread_self = xyes \
220 && test x$cross_compiling != xyes; then
221 cat > conftest.c <<EOF
222 #define _GNU_SOURCE 1
225 #include <sys/resource.h>
229 tf (void *arg __attribute__ ((unused)))
234 if (pthread_getattr_np (pthread_self (), &a)
235 || pthread_attr_getstacksize (&a, &s)
236 || s > 2 * PTHREAD_STACK_MIN)
242 main (int argc, char **argv)
250 r.rlim_cur = 2 * PTHREAD_STACK_MIN;
251 r.rlim_max = 2 * PTHREAD_STACK_MIN;
252 if (setrlimit (RLIMIT_STACK, &r))
254 execl (argv[1], argv[0], NULL);
258 if (pthread_create (&p, NULL, tf, NULL)
259 || pthread_join (p, &ret))
264 $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \
265 ./conftest ./conftest && slow_pthread_self=
266 rm -f conftest conftest.c
269 i[34567]86*-kfreebsd*-gnu | x86_64*-kfreebsd*-gnu)
270 libgcj_ld_symbolic='-Wl,-Bsymbolic'
273 i[34567]86-*-solaris2.1[0-9]* )
275 DIVIDESPEC=-f%{m32:no-}%{!m32:%{!m64:no-}}%{m64:}use-divide-subroutine
279 # disable interpreter, no closure support for N32 and N64 ABIs
280 libgcj_interpreter=no
285 CHECKREFSPEC=-fcheck-references
286 DIVIDESPEC=-fuse-divide-subroutine
290 can_unwind_signal=yes
291 DIVIDESPEC=-fno-use-divide-subroutine
292 enable_hash_synchronization_default=yes
295 enable_hash_synchronization_default=yes
297 can_unwind_signal=yes
300 enable_hash_synchronization_default=yes
305 can_unwind_signal=yes
306 DIVIDESPEC=-f%{m32:no-}%{!m32:%{!m64:no-}}%{m64:}use-divide-subroutine
308 x86_64-*-darwin[912]*)
309 enable_hash_synchronization_default=yes
311 can_unwind_signal=yes
312 DIVIDESPEC=-fuse-divide-subroutine
313 CHECKREFSPEC=-fcheck-references
319 libgcj_flags="${libgcj_flags} -fno-omit-frame-pointer"
320 # FIXME: win32_exception_handler( ) in win32.cc does not do the
321 # right stuff yet w.r.t. SEH. Live with the following for now.
323 CHECKREFSPEC=-fcheck-references
324 DIVIDESPEC=-fuse-divide-subroutine
327 # The cygwin linker doesn't do 8-byte alignment by default, so
328 # disable hash synchronization for now.
329 enable_hash_synchronization_default=no
334 can_unwind_signal=yes
335 DIVIDESPEC=-fuse-divide-subroutine
340 *-cygwin* | *-mingw*)
341 fallback_backtrace_h=sysdep/i386/backtrace.h
342 # We need a frame pointer on Windows, so override BACKTRACESPEC
349 descriptor_h=sysdep/descriptor-y.h
353 descriptor_h=sysdep/pa/descriptor-pa64-hpux.h
357 descriptor_h=sysdep/pa/descriptor-pa32-hpux.h
361 descriptor_h=sysdep/pa/descriptor.h
364 rs6000-* | powerpc*-*)
365 descriptor_h=sysdep/powerpc/descriptor.h
369 descriptor_h=sysdep/descriptor-n.h
374 *linux*|*-kfreebsd*-gnu|*-gnu*)
382 libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"
383 libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"
384 libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"