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Alpha-DEC-UNIX Notes (Tru64)
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If you are using egcs 1.1.2 on Digital Unix, you should upgrade to gcc
2.95.2, as egcs on DEC has some serious bugs!

When compiling threaded programs under Digital Unix, the documentation
recommends using the `-pthread' option for `cc' and `cxx' and the
libraries `-lmach -lexc' (in addition to `-lpthread').  You should run
`configure' something like this:

     CC="cc -pthread" CXX="cxx -pthread -O" \
     ./configure --with-named-thread-libs="-lpthread -lmach -lexc -lc"

When compiling `mysqld', you may see a couple of warnings like this:

     mysqld.cc: In function void handle_connections()':
     mysqld.cc:626: passing long unsigned int *' as argument 3 of
     accept(int,sockadddr *, int *)'

You can safely ignore these warnings.  They occur because `configure'
can detect only errors, not warnings.

If you start the server directly from the command line, you may have
problems with it dying when you log out.  (When you log out, your
outstanding processes receive a `SIGHUP' signal.)  If so, try starting
the server like this:

     shell> nohup mysqld [options] &

`nohup' causes the command following it to ignore any `SIGHUP' signal
sent from the terminal.  Alternatively, start the server by running
`safe_mysqld', which invokes `mysqld' using `nohup' for you.  Note:
`safe_mysqld'.

If you get a problem when compiling mysys/get_opt.c, just remove the
line #define _NO_PROTO from the start of that file!

If you are using Compac's CC compiler, the following configure line
should work:

     CC="cc -pthread"
     CFLAGS="-O4 -ansi_alias -ansi_args -fast -inline speed all -arch host"
     CXX="cxx -pthread"
     CXXFLAGS="-O4 -ansi_alias -ansi_args -fast -inline speed all -arch host"
     export CC CFLAGS CXX CXXFLAGS
     ./configure \
     --prefix=/usr/local/mysql \
     --with-low-memory \
     --enable-large-files \
     --enable-shared=yes \
     --with-named-thread-libs="-lpthread -lmach -lexc -lc"
     gnumake

If you get a problem with libtool, when compiling with shared libraries
as above, when linking `mysql', you should be able to get around this
by issuing:

     cd mysql
     /bin/sh ../libtool --mode=link cxx -pthread  -O3 -DDBUG_OFF \
     -O4 -ansi_alias -ansi_args -fast -inline speed \
     -speculate all \ -arch host  -DUNDEF_HAVE_GETHOSTBYNAME_R \
     -o mysql  mysql.o readline.o sql_string.o completion_hash.o \
     ../readline/libreadline.a -lcurses \
     ../libmysql/.libs/libmysqlclient.so  -lm
     cd ..
     gnumake
     gnumake install
     scripts/mysql_install_db