Two test cases, debug_msg_so.err and debug_msg_ndebug.err, are still broken by the original patch, because (a) debug_msg.so has a DT_NEEDED entry for libstdc++.so, (b) the use of -static-libstdc++ means that that DT_NEEDED entry is unknown when we link the executable, and (c) the undefined symbols in debug_msg.so will not be printed.
The obvious solution would be to add an option to cancel -static-libstdc++, but there doesn't seem to be one. (There is a -shared-libgcc option, but no -shared-libstdc++.) I've tested two alternatives that work: (1) Force the issue by explicitly adding -Bdynamic -lstdc++ to the link flags for debug_msg_so and debug_msg_ndebug. (2) Remove the DT_NEEDED entry from debug_msg.so by linking it with -static-libstdc++ also. Which one seems preferable? Any better ideas? -cary On Tue, Oct 23, 2012 at 2:54 PM, Ian Lance Taylor <i...@google.com> wrote: > On Tue, Oct 23, 2012 at 2:11 PM, Eric Botcazou <ebotca...@adacore.com> wrote: >> >> 2012-10-23 Eric Botcazou <ebotca...@adacore.com> >> >> PR bootstrap/54820 >> * configure.ac (have_static_libs): Force 'no' for GCC version < 4.5. >> * configure: Regenerate. > > This is OK. > > Thanks. > > Ian
