[v2] .gdbinit: load QEMU sub-commands when gdb starts

The scripts/qemu-gdb.py file is not easily discoverable.  Add a .gdbinit
file so GDB either loads qemu-gdb.py automatically or prints a message
informing the user how to enable them (some systems disable ./.gdbinit
loading for security reasons).

Symlink .gdbinit and the scripts directory in order to make out-of-tree
builds work.  The scripts directory is used to find the qemu-gdb.py file
specified by a relative path in .gdbinit.

Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
v2:
 * Support out-of-tree builds [Daniel, Markus]

 configure | 1 +
 .gdbinit  | 8 ++++++++
 2 files changed, 9 insertions(+)
 create mode 100644 .gdbinit

Stefan Hajnoczi <stefanha@redhat.com> writes:

> The scripts/qemu-gdb.py file is not easily discoverable.  Add a .gdbinit
> file so GDB either loads qemu-gdb.py automatically or prints a message
> informing the user how to enable them (some systems disable ./.gdbinit
> loading for security reasons).
>
> Symlink .gdbinit and the scripts directory in order to make out-of-tree
> builds work.  The scripts directory is used to find the qemu-gdb.py file
> specified by a relative path in .gdbinit.
>
> Suggested-by: Eric Blake <eblake@redhat.com>
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

> ---
> v2:
>  * Support out-of-tree builds [Daniel, Markus]
>
>  configure | 1 +
>  .gdbinit  | 8 ++++++++
>  2 files changed, 9 insertions(+)
>  create mode 100644 .gdbinit
>
> diff --git a/configure b/configure
> index 57b5ae6..04f7272 100755
> --- a/configure
> +++ b/configure
> @@ -6382,6 +6382,7 @@ FILES="$FILES pc-bios/spapr-rtas/Makefile"
>  FILES="$FILES pc-bios/s390-ccw/Makefile"
>  FILES="$FILES roms/seabios/Makefile roms/vgabios/Makefile"
>  FILES="$FILES pc-bios/qemu-icon.bmp"
> +FILES="$FILES .gdbinit scripts" # scripts needed by relative path in .gdbinit
>  for bios_file in \
>      $source_path/pc-bios/*.bin \
>      $source_path/pc-bios/*.lid \
> diff --git a/.gdbinit b/.gdbinit
> new file mode 100644
> index 0000000..9d322fc
> --- /dev/null
> +++ b/.gdbinit
> @@ -0,0 +1,8 @@
> +# GDB may have ./.gdbinit loading disabled by default.  In that case you can
> +# follow the instructions it prints.  They boil down to adding the following to
> +# your home directory's ~/.gdbinit file:
> +#
> +#   add-auto-load-safe-path /path/to/qemu/.gdbinit
> +
> +# Load QEMU-specific sub-commands and settings
> +source scripts/qemu-gdb.py


--
Alex Bennée

On 05/17/2017 07:40 AM, Stefan Hajnoczi wrote:
> The scripts/qemu-gdb.py file is not easily discoverable.  Add a .gdbinit
> file so GDB either loads qemu-gdb.py automatically or prints a message
> informing the user how to enable them (some systems disable ./.gdbinit
> loading for security reasons).
> 
> Symlink .gdbinit and the scripts directory in order to make out-of-tree
> builds work.  The scripts directory is used to find the qemu-gdb.py file
> specified by a relative path in .gdbinit.
> 
> Suggested-by: Eric Blake <eblake@redhat.com>
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
> ---
> v2:
>  * Support out-of-tree builds [Daniel, Markus]

Tested-by: Eric Blake <eblake@redhat.com>

On 05/17/2017 09:40 AM, Stefan Hajnoczi wrote:
> The scripts/qemu-gdb.py file is not easily discoverable.  Add a .gdbinit
> file so GDB either loads qemu-gdb.py automatically or prints a message
> informing the user how to enable them (some systems disable ./.gdbinit
> loading for security reasons).
>
> Symlink .gdbinit and the scripts directory in order to make out-of-tree
> builds work.  The scripts directory is used to find the qemu-gdb.py file
> specified by a relative path in .gdbinit.
>
> Suggested-by: Eric Blake <eblake@redhat.com>
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

> ---
> v2:
>  * Support out-of-tree builds [Daniel, Markus]
>
>  configure | 1 +
>  .gdbinit  | 8 ++++++++
>  2 files changed, 9 insertions(+)
>  create mode 100644 .gdbinit
>
> diff --git a/configure b/configure
> index 57b5ae6..04f7272 100755
> --- a/configure
> +++ b/configure
> @@ -6382,6 +6382,7 @@ FILES="$FILES pc-bios/spapr-rtas/Makefile"
>  FILES="$FILES pc-bios/s390-ccw/Makefile"
>  FILES="$FILES roms/seabios/Makefile roms/vgabios/Makefile"
>  FILES="$FILES pc-bios/qemu-icon.bmp"
> +FILES="$FILES .gdbinit scripts" # scripts needed by relative path in .gdbinit
>  for bios_file in \
>      $source_path/pc-bios/*.bin \
>      $source_path/pc-bios/*.lid \
> diff --git a/.gdbinit b/.gdbinit
> new file mode 100644
> index 0000000..9d322fc
> --- /dev/null
> +++ b/.gdbinit
> @@ -0,0 +1,8 @@
> +# GDB may have ./.gdbinit loading disabled by default.  In that case you can
> +# follow the instructions it prints.  They boil down to adding the following to
> +# your home directory's ~/.gdbinit file:
> +#
> +#   add-auto-load-safe-path /path/to/qemu/.gdbinit
> +
> +# Load QEMU-specific sub-commands and settings
> +source scripts/qemu-gdb.py
>

On Wed, May 17, 2017 at 01:40:42PM +0100, Stefan Hajnoczi wrote:
> The scripts/qemu-gdb.py file is not easily discoverable.  Add a .gdbinit
> file so GDB either loads qemu-gdb.py automatically or prints a message
> informing the user how to enable them (some systems disable ./.gdbinit
> loading for security reasons).
> 
> Symlink .gdbinit and the scripts directory in order to make out-of-tree
> builds work.  The scripts directory is used to find the qemu-gdb.py file
> specified by a relative path in .gdbinit.
> 
> Suggested-by: Eric Blake <eblake@redhat.com>
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
> ---
> v2:
>  * Support out-of-tree builds [Daniel, Markus]
> 
>  configure | 1 +
>  .gdbinit  | 8 ++++++++
>  2 files changed, 9 insertions(+)
>  create mode 100644 .gdbinit

Thanks, applied to my block tree:
https://github.com/stefanha/qemu/commits/block

Stefan