Commit 84d584ea authored by Thomas Petazzoni's avatar Thomas Petazzoni Committed by Peter Korsgaard
Browse files

gdb: add support for Python in target gdb 



This commit adds a new option BR2_PACKAGE_GDB_PYTHON to enable Python
support in the target gdb. Since we can assume that the user will be
aware that Python is needed to get Python support in gdb, we chose to
use a "depends on" dependency instead of a "select" dependency.

The other weird thing is the need for a wrapper shell script to
replace gdb's provided python-config.py script. See the shell script
comment itself for all the details.

Signed-off-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: default avatarPeter Korsgaard <peter@korsgaard.com>
parent d79cc3cd

package/gdb/Config.in

+7 −0
Original line number Diff line number Diff line
@@ -60,6 +60,13 @@ config BR2_PACKAGE_GDB_TUI 


	  https://sourceware.org/gdb/current/onlinedocs/gdb/TUI.html



config BR2_PACKAGE_GDB_PYTHON

	bool "Python support"

	# Only Python 2.x is supported by gdb for now

	depends on BR2_PACKAGE_PYTHON

	help

	  This option enables Python support in the target gdb.



endif



endif

package/gdb/gdb-python-config

0 → 100755
+36 −0
Original line number Diff line number Diff line 
#!/bin/sh



# This shell script is used to fake Python. Gdb wants to be passed a

# Python interpreter, to run its own python-config.py program, which

# uses sysconfig. However, when cross-compiling, this doesn't work

# well since we would have to use the host Python, whose sysconfig

# module would return host values.

#

# As recommended at

# https://sourceware.org/gdb/wiki/CrossCompilingWithPythonSupport,

# this wrapper shell script can be used as a replacement. It ignores

# the python-config.py script passed as first arguments, and

# "emulates" its behavior.



if [ $# -ne 2 ] ; then

    echo "Bad # args." >&2

    exit 1

fi



# The first argument is the path to python-config.py, ignore it.



case "$2" in

    --includes)

	echo "-I${STAGING_DIR}/usr/include/python2.7"

	;;

    --ldflags)

	echo "-lpthread -ldl -lutil -lm -lpython2.7"

	;;

    --exec-prefix)

	echo "/usr"

	;;

    *)

	echo "Bad arg $2." >&2

	exit 1

	;;

esac

package/gdb/gdb.mk

+7 −0
Original line number Diff line number Diff line
@@ -91,6 +91,13 @@ else 
	GDB_CONF_OPT += --disable-tui

endif



ifeq ($(BR2_PACKAGE_GDB_PYTHON),y)

	GDB_CONF_OPT += --with-python=$(TOPDIR)/package/gdb/gdb-python-config

	GDB_DEPENDENCIES += python

else

	GDB_CONF_OPT += --without-python

endif



# This removes some unneeded Python scripts and XML target description

# files that are not useful for a normal usage of the debugger.

define GDB_REMOVE_UNNEEDED_FILES