Pthread problems on HP-UX 10.20

[Mike Romberg]

    > Hi!  I've installed egcs 1.1 on several machines.  Everything
    > works fine.  However when the package
    > DCE-CoreTools.DCE-BPRG(package puts user-level threads) is
    > installed and I recompile egcs lot of strange problems
    > happen.  I use the following flags --enable-shared
    > --with-gnu-as --enable-haifa.

    > mysqld will start crashing with kernel panic.  I think this
    > is related to the fact it has mysqld includes mit-pthread.
    > However when I compile this on non-DCE it works just fine.

    > Any application compiled with DCE egcs version all c++
    > program come up with this error /usr/lib/dld.sl: Unresolved
    > symbol: pthread_once (code) from /usr/local/lib/lib stdc++.sl
    > ABORT instruction (core dumped).  It can be fixed by linking
    > with dce library(Can this be put in the spec file, I am not
    > sure how).

  I bumped into this same problem and "fixed" it by modifying
g++spec.c.  I'm pretty sure this is not the correct way to do this.
But it does seem to work.  Here is the change I made to
gcc/cp/g++spec.c:

  /* Add `-lstdc++' if we haven't already done so.  */
  if (library)
    {
      arglist[j++] = "-lstdc++";
      added_libraries++;
+     arglist[j++] = "-ldce";
+     added_libraries++;
    }

  Perhaps someone else knows a better way to do this.

Mike Romberg (romberg@fsl.noaa.gov)