[Bug gdb/13828] New: Incorrect instructions in gdbserver README

[Bug gdb/13828] New: Incorrect instructions in gdbserver README

[richaw at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13828

             Bug #: 13828
           Summary: Incorrect instructions in gdbserver README
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
        AssignedTo: unassigned@sourceware.org
        ReportedBy: richaw@gmail.com
    Classification: Unclassified


The gdbserver README (../gdb/gdbserver/README) states

If you prefer to cross-compile to your target, then you can also build
GDBserver that way.  In a Bourne shell, for example:

        % export CC=your-cross-compiler
        % path-to-gdbserver-sources/configure your-target-name
        % make

It should probably say
% path-to-gdbserver-sources/configure --host your-target-name

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[Bug gdb/13828] Incorrect instructions in gdbserver README

[palves at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13828

Pedro Alves <palves at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |palves at redhat dot com

--- Comment #1 from Pedro Alves <palves at redhat dot com> 2012-03-12 16:56:22 UTC ---
That actually seems to still work.

$ ../src/gdb/gdbserver/configure foo-foo-foo
configure: WARNING: you should use --build, --host, --target
checking for foo-foo-foo-gcc... no

configure expands to:

  *)
    # FIXME: should be removed in autoconf 3.0.
    $as_echo "$as_me: WARNING: you should use --build, --host, --target" >&2
    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
      $as_echo "$as_me: WARNING: invalid host type: $ac_option" >&2
    : ${build_alias=$ac_option} ${host_alias=$ac_option}
${target_alias=$ac_option}
    ;;

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[Bug gdb/13828] Incorrect instructions in gdbserver README

[richaw at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13828

--- Comment #2 from Rich Wilson <richaw at gmail dot com> 2012-03-12 18:18:21 UTC ---
On Mon, Mar 12, 2012 at 9:56 AM, palves at redhat dot com <
sourceware-bugzilla@sourceware.org> wrote:

> http://sourceware.org/bugzilla/show_bug.cgi?id=13828
>
> Pedro Alves <palves at redhat dot com> changed:
>
>           What    |Removed                     |Added
>
> ----------------------------------------------------------------------------
>                 CC|                            |palves at redhat dot com
>
> --- Comment #1 from Pedro Alves <palves at redhat dot com> 2012-03-12
> 16:56:22 UTC ---
> That actually seems to still work.
>
> $ ../src/gdb/gdbserver/configure foo-foo-foo
> configure: WARNING: you should use --build, --host, --target
> checking for foo-foo-foo-gcc... no
>
> configure expands to:
>
>  *)
>    # FIXME: should be removed in autoconf 3.0.
>    $as_echo "$as_me: WARNING: you should use --build, --host, --target" >&2
>    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
>      $as_echo "$as_me: WARNING: invalid host type: $ac_option" >&2
>    : ${build_alias=$ac_option} ${host_alias=$ac_option}
> ${target_alias=$ac_option}
>    ;;
>
> --
> Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
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> You reported the bug.
>

 Leaving out --host does not work for cross-compiling:

rw@seven /cygdrive/c/Downloads/gnu/gdb_git/gdb/gdb/gdbserver
$ ./configure arm-unknown-linux
configure: WARNING: you should use --build, --host, --target
checking for arm-unknown-linux-gcc...
/opt/crosstool/gcc-3.3.4-glibc-2.3.2/arm-unknown-linux-gnu/bin/arm-unknown-linux-gnu-gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... configure: error: in
`/cygdrive/c/Downloads/gnu/gdb_git/gdb/gdb/gdbserver':
configure: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.
See `config.log' for more details.

rw@seven /cygdrive/c/Downloads/gnu/gdb_git/gdb/gdb/gdbserver
$

Rich

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[Bug gdb/13828] Incorrect instructions in gdbserver README

[palves at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13828

--- Comment #3 from Pedro Alves <palves at redhat dot com> 2012-03-12 18:31:06 UTC ---
Aha.  We should really fix the docs then.  Thanks.

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