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.
37 enable_java_net_default=yes
38 enable_hash_synchronization_default=no
43 case "${target_optspace}:${host}" in
45 libgcj_flags="${libgcj_flags} -Os"
47 :m32r-* | :d10v-* | :d30v-*)
48 libgcj_flags="${libgcj_flags} -Os"
57 # Set any host dependent compiler flags.
58 # THIS TABLE IS SORTED. KEEP IT THAT WAY.
62 DIVIDESPEC=-fuse-divide-subroutine
63 EXCEPTIONSPEC=-fnon-call-exceptions
66 # This case statement supports per-CPU defaults.
68 arm*-elf | strongarm*-elf | xscale*-elf)
69 with_libffi_default=no
72 CHECKREFSPEC=-fcheck-references
74 enable_java_net_default=no
75 enable_getenv_properties_default=no
76 enable_main_args_default=no
78 mips-tx39-*|mipstx39-unknown-*)
79 libgcj_flags="${libgcj_flags} -G 0"
80 LDFLAGS="$LDFLAGS -Tjmr3904dram.ld"
81 AM_RUNTESTFLAGS="--target_board=jmr3904-sim"
82 # Use "Ecos" processes since they are a no-op.
85 enable_java_net_default=no
86 enable_getenv_properties_default=no
88 i686-*|i586-*|i486-*|i386-*)
90 libgcj_flags="${libgcj_flags} -ffloat-store"
91 libgcj_interpreter=yes
94 DIVIDESPEC=-fno-use-divide-subroutine
95 enable_hash_synchronization_default=yes
99 CHECKREFSPEC="%{m32:-fcheck-references}"
101 libgcj_flags="${libgcj_flags} -ffloat-store -fno-omit-frame-pointer"
104 enable_hash_synchronization_default=yes
105 slow_pthread_self=yes
106 libgcj_interpreter=yes
110 libgcj_flags="${libgcj_flags} -mieee"
111 libgcj_interpreter=yes
112 enable_hash_synchronization_default=yes
116 with_libffi_default=yes
117 libgcj_interpreter=yes
118 libgcj_flags="${libgcj_flags} -mminimal-toc"
119 # this may not be correct
121 enable_hash_synchronization_default=yes
122 slow_pthread_self=yes
126 libgcj_interpreter=yes
127 enable_hash_synchronization_default=yes
128 slow_pthread_self=yes
132 libgcj_interpreter=yes
133 enable_hash_synchronization_default=yes
136 libgcj_interpreter=yes
140 libgcj_flags="${libgcj_flags} -funwind-tables"
141 libgcj_interpreter=yes
142 enable_hash_synchronization_default=yes
146 libgcj_flags="${libgcj_flags} -mieee"
147 libgcj_interpreter=yes
148 enable_hash_synchronization_default=yes
152 # This case statement supports generic port properties and may refine
153 # the above per-CPU defaults. Note: If your OS implements
154 # MD_FALLBACK_FRAME_STATE_FOR, then you want to set can_unwind_signal
157 i[34567]86*-linux* | \
164 sh-linux* | sh[34]*-linux*)
165 can_unwind_signal=yes
166 if test x$slow_pthread_self = xyes \
167 && test x$cross_compiling != xyes; then
168 cat > conftest.c <<EOF
169 #define _GNU_SOURCE 1
172 #include <sys/resource.h>
176 tf (void *arg __attribute__ ((unused)))
181 if (pthread_getattr_np (pthread_self (), &a)
182 || pthread_attr_getstacksize (&a, &s)
183 || s > 2 * PTHREAD_STACK_MIN)
189 main (int argc, char **argv)
197 r.rlim_cur = 2 * PTHREAD_STACK_MIN;
198 r.rlim_max = 2 * PTHREAD_STACK_MIN;
199 if (setrlimit (RLIMIT_STACK, &r))
201 execl (argv[1], argv[0], NULL);
205 if (pthread_create (&p, NULL, tf, NULL)
206 || pthread_join (p, &ret))
211 $CC -o conftest conftest.c -lpthread > /dev/null 2>&1 && \
212 ./conftest ./conftest && slow_pthread_self=
213 rm -f conftest conftest.c
217 enable_hash_synchronization_default=no
225 # FIXME: win32_exception_handler( ) in win32.cc does not do the
226 # right stuff yet w.r.t. SEH. Live with the following for now.
228 CHECKREFSPEC=-fcheck-references
229 DIVIDESPEC=-fuse-divide-subroutine
232 # The cygwin linker doesn't do 8-byte alignment by default, so
233 # disable hash synchronization for now.
234 enable_hash_synchronization_default=no
239 libgcj_cflags="${libgcj_cflags} ${libgcj_flags}"
240 libgcj_cxxflags="${libgcj_cxxflags} ${libgcj_flags}"
241 libgcj_javaflags="${libgcj_javaflags} ${libgcj_flags}"