Re: [patch/rfc] Build inf-ptrace.o when ptrace available

[Mark Kettenis <kettenis@gnu.org>]

   Date: Fri, 01 Oct 2004 16:39:57 -0400
   From: Andrew Cagney <cagney@gnu.org>

   Hello,

   This modifies GDB's configure to build inf-ptrace.o whenever the ptrace 
   call is available.  Thoughts?

I'm not sure.  On the one hand, yes, inf-ptrace should compile & link
on any system that has ptrace.  On the other hand, actually using this
stuff is still a per-target decision, and there are quite a few
targets that have ptrace, but dont use it (Solaris, OSF/1, HP-UX).

I'm also thinking about the ultimate replacement of the makefile
fragments in config/*/.  I think we should move towards a configure
script where we can use wildcards to set some sensible defaults.
There we'd have something like:

*-*-*bsd*)
  native_sources="inf-ptrace.c bsd-nat.c"
  ;;

*-*-linux*)
  native_sources="inf-ptrace.c linux-nat.c"
  ;;

*-*-solaris*)
  native_sources="inf-procfs.c"
  ;;

I'm not strongly opposed to your patch (but you should look at it
again, see the hunk below).  I also think that the logic that adds
inf-ptrace.o / inf-ptrace.c doesn't belong in the "Checks for library
functions" section.  I'd leave the AC_CHECK_FUNCS(ptrace) there
(possibly grouping it together with the check for ttrace), and put the
rest of the logic somewhere else.

Mark


   @@ -532,6 +539,9 @@ if test -n "$[5]"; then
	[Define to the type of arg 5 for ptrace.])
    fi

   +dnl If there is ptrace, add inf-ptrace to the compile list.
   +
   +
    dnl AC_FUNC_SETPGRP does not work when cross compiling
    dnl Instead, assume we will have a prototype for setpgrp if cross compiling.
    if test "$cross_compiling" = no; then