1 files changed, 55 insertions, 0 deletions
diff --git a/contrib/expat/buildconf.sh b/contrib/expat/buildconf.sh
new file mode 100755
index 000000000000..5e2b3269c256
--- /dev/null
+++ b/contrib/expat/buildconf.sh
@@ -0,0 +1,55 @@
+#! /usr/bin/env bash
+#                          __  __            _
+#                       ___\ \/ /_ __   __ _| |_
+#                      / _ \\  /| '_ \ / _` | __|
+#                     |  __//  \| |_) | (_| | |_
+#                      \___/_/\_\ .__/ \__,_|\__|
+#                               |_| XML parser
+#
+# Copyright (c) 2017-2022 Sebastian Pipping <sebastian@pipping.org>
+# Copyright (c) 2018      Marco Maggi <marco.maggi-ipsu@poste.it>
+# Licensed under the MIT license:
+#
+# Permission is  hereby granted,  free of charge,  to any  person obtaining
+# a  copy  of  this  software   and  associated  documentation  files  (the
+# "Software"),  to  deal in  the  Software  without restriction,  including
+# without  limitation the  rights  to use,  copy,  modify, merge,  publish,
+# distribute, sublicense, and/or sell copies of the Software, and to permit
+# persons  to whom  the Software  is  furnished to  do so,  subject to  the
+# following conditions:
+#
+# The above copyright  notice and this permission notice  shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
+# EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+# NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+# DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
+# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+# USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+set -e
+
+# File expat_config.h.in (as generated by autoheader by autoreconf) contains
+# macro SIZEOF_VOID_P which is (1) not really needed by Expat as of today and
+# (2) a problem to "multilib" systems with one shared installed
+# /usr/include/expat_config.h for two Expats with different "void *" sizes
+# installed in e.g. /usr/lib32 and /usr/lib64.  Hence we patch macro
+# SIZEOF_VOID_P out of template expat_config.h.in so that configure will
+# not put SIZEOF_VOID_P in the eventual expat_config.h.
+patch_expat_config_h_in() {
+    local filename="$1"
+    local sizeof_void_p_line_number="$(grep -F -n SIZEOF_VOID_P "${filename}" | awk -F: '{print $1}')"
+    [[ ${sizeof_void_p_line_number} =~ ^[0-9]+$ ]]  # cheap assert
+    local first_line_to_delete=$(( sizeof_void_p_line_number - 1 ))
+    local last_line_to_delete=$(( sizeof_void_p_line_number + 1 ))
+    # Note: Avoiding "sed -i" only for macOS portability.
+    local tempfile="$(mktemp)"
+    sed "${first_line_to_delete},${last_line_to_delete}d" "${filename}" > "${tempfile}"
+    mv "${tempfile}" "${filename}"
+}
+
+autoreconf --warnings=all --install --verbose "$@"
+
+patch_expat_config_h_in expat_config.h.in