1 files changed, 102 insertions, 0 deletions
diff --git a/src/bldprogs/checkUndefined.sh b/src/bldprogs/checkUndefined.sh
new file mode 100755
index 00000000..cb5165f5
--- /dev/null
+++ b/src/bldprogs/checkUndefined.sh
@@ -0,0 +1,102 @@
+#!/bin/sh
+
+#
+# Copyright (C) 2006-2023 Oracle and/or its affiliates.
+#
+# This file is part of VirtualBox base platform packages, as
+# available from https://www.virtualbox.org.
+#
+# 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, in version 3 of the
+# License.
+#
+# 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 <https://www.gnu.org/licenses>.
+#
+# SPDX-License-Identifier: GPL-3.0-only
+#
+
+#
+# Compare undefined symbols in a shared or static object against a new-line
+# separated list of grep patterns in a set of text files and complain if
+# symbols are found which aren't in the files.
+#
+# Usage: /bin/sh <script name> <object> [--static] <undefined symbol file...>
+#
+# Currently only works for native objects on Linux (and Solaris?) platforms.
+#
+
+echoerr()
+{
+  echo $* 1>&2
+}
+
+hostos="${1}"
+target="${2}"
+shift 2
+if test "${1}" = "--static"; then
+    static="${1}"
+    shift
+fi
+
+if test $# -lt 1; then
+    echoerr "${0}: Wrong number of arguments"
+    args_ok="no"
+fi
+if test ! -r "${target}"; then
+    echoerr "${0}: '${target}' not readable"
+    args_ok="no"
+fi
+for i in "${@}"; do
+    if test ! -r "${i}"; then
+        echoerr "${0}: '${i}' not readable"
+        args_ok="no"
+    fi
+done
+
+if test "$args_ok" = "no"; then
+  echoerr "Usage: $0 <object> [--static] <undefined symbol file...>"
+  exit 1
+fi
+
+if test "$hostos" = "solaris"; then
+    objdumpbin=/usr/sfw/bin/gobjdump
+    grepbin=/usr/sfw/bin/ggrep
+elif test "$hostos" = "linux"; then
+    objdumpbin=`which objdump`
+    grepbin=`which grep`
+else
+    echoerr "$0: '$hostos' not a valid hostos string. supported 'linux' 'solaris'"
+    exit 1
+fi
+
+command="-T"
+if test "$static" = "--static"; then
+  command="-t"
+fi
+
+if test ! -x "${objdumpbin}"; then
+    echoerr "${0}: '${objdumpbin}' not found or not executable."
+    exit 1
+fi
+
+undefined=`"${objdumpbin}" ${command} "${target}" | kmk_sed -n 's/.*\*UND\*.*\s\([:graph:]*\)/\1/p'`
+for i in "${@}"; do
+    undefined=`echo "${undefined}" | "${grepbin}" -w -v -f "${i}"`
+done
+num_undef=`echo $undefined | wc -w`
+
+if test $num_undef -ne 0; then
+  echoerr "${0}: following symbols not defined in the files ${@}:"
+  echoerr "${undefined}"
+  exit 1
+fi
+# Return code
+exit 0
+