diff options
Diffstat (limited to 'gdb/gdbserver/configure.ac')
| -rw-r--r-- | gdb/gdbserver/configure.ac | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/gdb/gdbserver/configure.ac b/gdb/gdbserver/configure.ac index bc550b6..729a77a 100644 --- a/gdb/gdbserver/configure.ac +++ b/gdb/gdbserver/configure.ac @@ -245,11 +245,43 @@ fi GDBSERVER_DEPFILES="$srv_regobj $srv_tgtobj $srv_hostio_err_objs $srv_thread_depfiles" GDBSERVER_LIBS="$srv_libs" +dnl Check whether the target supports __sync_*_compare_and_swap. +AC_CACHE_CHECK([whether the target supports __sync_*_compare_and_swap], + gdbsrv_cv_have_sync_builtins, [ +AC_TRY_LINK([], [int foo, bar; bar = __sync_val_compare_and_swap(&foo, 0, 1);], + gdbsrv_cv_have_sync_builtins=yes, + gdbsrv_cv_have_sync_builtins=no)]) +if test $gdbsrv_cv_have_sync_builtins = yes; then + AC_DEFINE(HAVE_SYNC_BUILTINS, 1, + [Define to 1 if the target supports __sync_*_compare_and_swap]) +fi + +dnl Check for -fvisibility=hidden support in the compiler. +saved_cflags="$CFLAGS" +CFLAGS="$CFLAGS -fvisibility=hidden" +AC_COMPILE_IFELSE(AC_LANG_PROGRAM([]), + [gdbsrv_cv_have_visibility_hidden=yes], + [gdbsrv_cv_have_visibility_hidden=no]) +CFLAGS="$saved_cflags" + +IPA_DEPFILES="" + +# Rather than allowing to build a broken IPA, we simply disable it if +# we don't find a compiler supporting all the features we need. +if test "$ipa_obj" != "" \ + -a "$gdbsrv_cv_have_sync_builtins" = yes \ + -a "$gdbsrv_cv_have_visibility_hidden" = yes; then + IPA_DEPFILES="$ipa_obj" + extra_libraries="libinproctrace.so" +fi + AC_SUBST(GDBSERVER_DEPFILES) AC_SUBST(GDBSERVER_LIBS) AC_SUBST(USE_THREAD_DB) AC_SUBST(srv_xmlbuiltin) AC_SUBST(srv_xmlfiles) +AC_SUBST(IPA_DEPFILES) +AC_SUBST(extra_libraries) AC_OUTPUT(Makefile, [case x$CONFIG_HEADERS in |