------- Comment #4 from rob1weld at aol dot com 2009-01-20 04:05 ------- (In reply to comment #1) > I really don't think using solaris threads is that well supported anymore. Is > there a reason why you are not using just --enable-threads=pthreads?
I have another reason for the compiler to support Solaris threading on this Platform, it is 'expected' by gdb. This is from code compiled by: gcc version 4.4.0 20090117 (experimental) [trunk revision 143454]. # gdb simtest GNU gdb (GDB) 6.8.50.20090115-cvs (gdb) b 8 Breakpoint 1 at 0x804883f: file simtest.f, line 8. (gdb) r Starting program: /usr/share/src/gcc_build/gcc/testsuite/gcc/simtest warning: rw_common (): unable to read at addr 0x155708 warning: sol_thread_new_objfile: td_ta_new: Debugger service failed warning: Unable to find dynamic linker breakpoint function. GDB will be unable to debug shared library initializers and track explicitly loaded dynamic code. Breakpoint 1, MAIN__ () at simtest.f:8 8 call sub (gdb) The "warning: sol_thread_new_objfile" line is from: 'gdb-6.8/gdb/sol-thread.c'. static void sol_thread_new_objfile (struct objfile *objfile) { td_err_e val; ... if (val == TD_NOLIBTHREAD) return; else if (val != TD_OK) { warning (_("sol_thread_new_objfile: td_ta_new: %s"), td_err_string (val)); return; } sol_thread_active = 1; } Between ./configuring using "--with-gnu-as --with-as=/usr/local/bin/as --with-gnu-ld --with-ld=/usr/local/bin/ld" and using the Posix thread model on i386-pc-solaris2.11 we end up confusing gdb build with an unusual Solaris configuration. Gdb expects the Solaris Platform to be different than what gcc is providing and for Solaris' compiler (_even_ _if_ it is gcc) to support the model --enable-threads=solaris . This is due to gdb's expectation that the libthread_db and libthread provided by the Operating System are in use. If we can not build the compiler with the correct options for this Platform then gdb suffers. When we get that warning it also means "sol_thread_active != 1" . While it would be correct for gdb to fix _their_ configury to correctly _detect_ the features that are available we should also fix _our_ configury to correctly _provide_ the features we need. Rob -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37017