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 # disable_dladdr Set to "yes" if dladdr should not be used
33 # fallback_backtrace_h Header to use for fallback backtrace implementation
34 # (only for targets that don't support DWARF2 unwind)
41 enable_java_net_default=yes
42 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
72 # This case statement supports per-CPU defaults.
74 arm*-elf | strongarm*-elf | xscale*-elf)
75 with_libffi_default=no
78 CHECKREFSPEC=-fcheck-references
80 enable_java_net_default=no
81 enable_getenv_properties_default=no
82 enable_main_args_default=no
84 mips-tx39-*|mipstx39-unknown-*)
85 libgcj_flags="${libgcj_flags} -G 0"
86 LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"
87 AM_RUNTESTFLAGS="--target_board=jmr3904-sim"
88 # Use "Ecos" processes since they are a no-op.
91 enable_java_net_default=no
92 enable_getenv_properties_default=no
94 i686-*|i586-*|i486-*|i386-*)
96 libgcj_flags="${libgcj_flags} -ffloat-store -fno-omit-frame-pointer"
97 libgcj_interpreter=yes
100 DIVIDESPEC=-fno-use-divide-subroutine
101 enable_hash_synchronization_default=yes
102 slow_pthread_self=yes
106 libgcj_flags="${libgcj_flags} -ffloat-store -fno-omit-frame-pointer"
109 DIVIDESPEC=-f%{m32:no-}use-divide-subroutine
110 enable_hash_synchronization_default=yes
111 slow_pthread_self=yes
112 libgcj_interpreter=yes
116 libgcj_flags="${libgcj_flags} -mieee"
117 libgcj_interpreter=yes
118 enable_hash_synchronization_default=yes
123 libgcj_interpreter=yes
124 enable_hash_synchronization_default=yes
128 libgcj_interpreter=yes
129 if [ x`$CC -print-multi-os-directory` = x../lib64 ]; then
130 libgcj_flags="${libgcj_flags} -mminimal-toc"
132 enable_hash_synchronization_default=yes
133 slow_pthread_self=yes
137 libgcj_interpreter=yes
138 enable_hash_synchronization_default=yes
139 slow_pthread_self=yes
143 libgcj_interpreter=yes
144 DIVIDESPEC=-fno-use-divide-subroutine
145 enable_hash_synchronization_default=yes
148 libgcj_interpreter=yes
152 libgcj_flags="${libgcj_flags} -funwind-tables"
153 libgcj_interpreter=yes
154 enable_hash_synchronization_default=yes
158 libgcj_flags="${libgcj_flags} -mieee"
159 libgcj_interpreter=yes
160 enable_hash_synchronization_default=yes
164 # This case statement supports generic port properties and may refine
165 # the above per-CPU defaults. Note: If your OS implements
166 # MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal
169 i[34567]86*-linux* | \
177 sh-linux* | sh[34]*-linux*)
178 can_unwind_signal=yes
179 libgcj_ld_symbolic='-Wl,-Bsymbolic'
180 if test x$slow_pthread_self = xyes \
181 && test x$cross_compiling != xyes; then
182 cat > conftest.c <<EOF
183 #define _GNU_SOURCE 1
186 #include <sys/resource.h>
190 tf (void *arg __attribute__ ((unused)))
195 if (pthread_getattr_np (pthread_self (), &a)
196 || pthread_attr_getstacksize (&a, &s)
197 || s > 2 * PTHREAD_STACK_MIN)
203 main (int argc, char **argv)
211 r.rlim_cur = 2 * PTHREAD_STACK_MIN;
212 r.rlim_max = 2 * PTHREAD_STACK_MIN;
213 if (setrlimit (RLIMIT_STACK, &r))
215 execl (argv[1], argv[0], NULL);
219 if (pthread_create (&p, NULL, tf, NULL)
220 || pthread_join (p, &ret))
225 $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \
226 ./conftest ./conftest && slow_pthread_self=
227 rm -f conftest conftest.c
232 can_unwind_signal=yes
233 DIVIDESPEC=-fno-use-divide-subroutine
235 mipsel*-linux* | mipsisa32el*-linux*)
236 enable_hash_synchronization_default=yes
242 enable_hash_synchronization_default=yes
244 can_unwind_signal=yes
250 # FIXME: win32_exception_handler( ) in win32.cc does not do the
251 # right stuff yet w.r.t. SEH. Live with the following for now.
253 CHECKREFSPEC=-fcheck-references
254 DIVIDESPEC=-fuse-divide-subroutine
257 # The cygwin linker doesn't do 8-byte alignment by default, so
258 # disable hash synchronization for now.
259 enable_hash_synchronization_default=no
265 *-cygwin* | *-mingw*)
266 fallback_backtrace_h=sysdep/i386/backtrace.h
271 libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"
272 libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"
273 libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"