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
39 enable_java_net_default=yes
40 enable_hash_synchronization_default=no
46 case "${target_optspace}:${host}" in
48 libgcj_flags="${libgcj_flags} -Os"
50 :m32r-* | :d10v-* | :d30v-*)
51 libgcj_flags="${libgcj_flags} -Os"
60 # Set any host dependent compiler flags.
61 # THIS TABLE IS SORTED. KEEP IT THAT WAY.
65 DIVIDESPEC=-fuse-divide-subroutine
66 EXCEPTIONSPEC=-fnon-call-exceptions
69 # This case statement supports per-CPU defaults.
71 arm*-elf | strongarm*-elf | xscale*-elf)
72 with_libffi_default=no
75 CHECKREFSPEC=-fcheck-references
77 enable_java_net_default=no
78 enable_getenv_properties_default=no
79 enable_main_args_default=no
81 mips-tx39-*|mipstx39-unknown-*)
82 libgcj_flags="${libgcj_flags} -G 0"
83 LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"
84 AM_RUNTESTFLAGS="--target_board=jmr3904-sim"
85 # Use "Ecos" processes since they are a no-op.
88 enable_java_net_default=no
89 enable_getenv_properties_default=no
91 i686-*|i586-*|i486-*|i386-*)
93 libgcj_flags="${libgcj_flags} -ffloat-store"
94 libgcj_interpreter=yes
97 DIVIDESPEC=-fno-use-divide-subroutine
98 enable_hash_synchronization_default=yes
103 libgcj_flags="${libgcj_flags} -ffloat-store -fno-omit-frame-pointer"
106 DIVIDESPEC=-f%{m32:no-}use-divide-subroutine
107 enable_hash_synchronization_default=yes
108 slow_pthread_self=yes
109 libgcj_interpreter=yes
113 libgcj_flags="${libgcj_flags} -mieee"
114 libgcj_interpreter=yes
115 enable_hash_synchronization_default=yes
120 libgcj_interpreter=yes
121 if [ x`$CC -print-multi-os-directory` = x../lib64 ]; then
122 libgcj_flags="${libgcj_flags} -mminimal-toc"
124 enable_hash_synchronization_default=yes
125 slow_pthread_self=yes
129 libgcj_interpreter=yes
130 enable_hash_synchronization_default=yes
131 slow_pthread_self=yes
135 libgcj_interpreter=yes
136 enable_hash_synchronization_default=yes
139 libgcj_interpreter=yes
143 libgcj_flags="${libgcj_flags} -funwind-tables"
144 libgcj_interpreter=yes
145 enable_hash_synchronization_default=yes
149 libgcj_flags="${libgcj_flags} -mieee"
150 libgcj_interpreter=yes
151 enable_hash_synchronization_default=yes
155 # This case statement supports generic port properties and may refine
156 # the above per-CPU defaults. Note: If your OS implements
157 # MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal
160 i[34567]86*-linux* | \
167 sh-linux* | sh[34]*-linux*)
168 can_unwind_signal=yes
169 if test x$slow_pthread_self = xyes \
170 && test x$cross_compiling != xyes; then
171 cat > conftest.c <<EOF
172 #define _GNU_SOURCE 1
175 #include <sys/resource.h>
179 tf (void *arg __attribute__ ((unused)))
184 if (pthread_getattr_np (pthread_self (), &a)
185 || pthread_attr_getstacksize (&a, &s)
186 || s > 2 * PTHREAD_STACK_MIN)
192 main (int argc, char **argv)
200 r.rlim_cur = 2 * PTHREAD_STACK_MIN;
201 r.rlim_max = 2 * PTHREAD_STACK_MIN;
202 if (setrlimit (RLIMIT_STACK, &r))
204 execl (argv[1], argv[0], NULL);
208 if (pthread_create (&p, NULL, tf, NULL)
209 || pthread_join (p, &ret))
214 $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \
215 ./conftest ./conftest && slow_pthread_self=
216 rm -f conftest conftest.c
221 can_unwind_signal=yes
222 libgcj_flags="${libgcj_flags} -mxgot"
224 mipsel*-linux* | mipsisa32el*-linux*)
225 enable_hash_synchronization_default=yes
231 enable_hash_synchronization_default=no
239 # FIXME: win32_exception_handler( ) in win32.cc does not do the
240 # right stuff yet w.r.t. SEH. Live with the following for now.
242 CHECKREFSPEC=-fcheck-references
243 DIVIDESPEC=-fuse-divide-subroutine
246 # The cygwin linker doesn't do 8-byte alignment by default, so
247 # disable hash synchronization for now.
248 enable_hash_synchronization_default=no
253 libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"
254 libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"
255 libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"