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# Copyright 2012-2016 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# Make the boards under testsuite/boards automatically available to
# DejaGnu. This is sourced by the `site.exp' file generated in the
# root of the testsuite's build directory.
# Append GDB's boards dir to DejaGnu's board dir list, making sure
# that that is the last boards dir in the list, so that boards found
# in directories appended to the list by either the global config
# site.exp, or in `$(dirname $DEJAGNU)/boards' override GDB's boards.
# Unfortunately, there's no standard way to get that behavior. To
# make it happen, we trace all writes to the $boards_dirs global, and
# make sure our dir is always the last in the list. This relies on
# the fact that DejaGnu always writes to this variable, even if just
# to set it to the empty list, which it does.
#
proc append_gdb_boards_dir { name1 name2 op } {
global srcdir
global boards_dir
# In case someone wants to point at GDB's boards dir in the global
# config before some other board dir, in which case we should not
# push it to the end of the list, use an unlikely path to GDB's
# boards, so it compares different to other simpler but equivalent
# paths.
set gdb_boards_dir "${srcdir}/boards/../boards"
# Keep our board dir last in the list.
set idx [lsearch -exact $boards_dir "$gdb_boards_dir"]
if { $idx >= 0 } {
set boards_dir [lreplace $boards_dir $idx $idx]
}
lappend boards_dir "${gdb_boards_dir}"
}
trace variable "boards_dir" w append_gdb_boards_dir
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