build: add a deterministic dmg signer

contrib/macdeploy/detached-sig-create.sh

@@ -0,0 +1,46 @@
+#!/bin/sh
+set -e
+
+ROOTDIR=dist
+BUNDLE=${ROOTDIR}/Bitcoin-Qt.app
+CODESIGN=codesign
+TEMPDIR=sign.temp
+TEMPLIST=${TEMPDIR}/signatures.txt
+OUT=signature.tar.gz
+
+if [ ! -n "$1" ]; then
+  echo "usage: $0 <codesign args>"
+  echo "example: $0 -s MyIdentity"
+  exit 1
+fi
+
+rm -rf ${TEMPDIR} ${TEMPLIST}
+mkdir -p ${TEMPDIR}
+
+${CODESIGN} -f --file-list ${TEMPLIST} "$@" "${BUNDLE}"
+
+for i in `grep -v CodeResources ${TEMPLIST}`; do
+  TARGETFILE="${BUNDLE}/`echo ${i} | sed "s|.*${BUNDLE}/||"`"
+  SIZE=`pagestuff $i -p | tail -2 | grep size | sed 's/[^0-9]*//g'`
+  OFFSET=`pagestuff $i -p | tail -2 | grep offset | sed 's/[^0-9]*//g'`
+  SIGNFILE="${TEMPDIR}/${TARGETFILE}.sign"
+  DIRNAME="`dirname ${SIGNFILE}`"
+  mkdir -p "${DIRNAME}"
+  echo "Adding detached signature for: ${TARGETFILE}. Size: ${SIZE}. Offset: ${OFFSET}"
+  dd if=$i of=${SIGNFILE} bs=1 skip=${OFFSET} count=${SIZE} 2>/dev/null
+done
+
+for i in `grep CodeResources ${TEMPLIST}`; do
+  TARGETFILE="${BUNDLE}/`echo ${i} | sed "s|.*${BUNDLE}/||"`"
+  RESOURCE="${TEMPDIR}/${TARGETFILE}"
+  DIRNAME="`dirname "${RESOURCE}"`"
+  mkdir -p "${DIRNAME}"
+  echo "Adding resource for: "${TARGETFILE}""
+  cp "${i}" "${RESOURCE}"
+done
+
+rm ${TEMPLIST}
+
+tar -C ${TEMPDIR} -czf ${OUT} .
+rm -rf ${TEMPDIR}
+echo "Created ${OUT}"