[scripts] build earlier releases

.gitignore

@@ -108,6 +108,9 @@ qrc_*.cpp
 .DS_Store
 build
 
+# Previous releases
+releases
+
 #lcov
 *.gcno
 *.gcda

contrib/devtools/previous_release.sh

@@ -0,0 +1,144 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2018-2019 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+#
+# Build previous releases.
+
+export LC_ALL=C
+
+CONFIG_FLAGS=""
+FUNCTIONAL_TESTS=0
+DELETE_EXISTING=0
+USE_DEPENDS=0
+DOWNLOAD_BINARY=0
+CONFIG_FLAGS=""
+TARGET="releases"
+
+while getopts ":hfrdbt:" opt; do
+  case $opt in
+    h)
+      echo "Usage: .previous_release.sh [options] tag1 tag2"
+      echo "  options:"
+      echo "  -h   Print this message"
+      echo "  -f   Configure for functional tests"
+      echo "  -r   Remove existing directory"
+      echo "  -d   Use depends"
+      echo "  -b   Download release binary"
+      echo "  -t   Target directory (default: releases)"
+      exit 0
+      ;;
+    f)
+      FUNCTIONAL_TESTS=1
+      CONFIG_FLAGS="$CONFIG_FLAGS --without-gui --disable-tests --disable-bench"
+      ;;
+    r)
+      DELETE_EXISTING=1
+      ;;
+    d)
+      USE_DEPENDS=1
+      ;;
+    b)
+      DOWNLOAD_BINARY=1
+      ;;
+    t)
+      TARGET=$OPTARG
+      ;;
+    \?)
+      echo "Invalid option: -$OPTARG" >&2
+      exit 1
+      ;;
+  esac
+done
+
+shift $((OPTIND-1))
+
+if [ -z "$1" ]; then
+  echo "Specify release tag(s), e.g.: .previous_release v0.15.1"
+  exit 1
+fi
+
+if [ ! -d "$TARGET" ]; then
+  mkdir -p $TARGET
+fi
+
+if [ "$DOWNLOAD_BINARY" -eq "1" ]; then
+  HOST="${HOST:-$(./depends/config.guess)}"
+  case "$HOST" in
+    x86_64-*-linux*)
+      PLATFORM=x86_64-linux-gnu
+      ;;
+    x86_64-apple-darwin*)
+      PLATFORM=osx64
+      ;;
+    *)
+      echo "Not sure which binary to download for $HOST."
+      exit 1
+      ;;
+  esac
+fi
+
+echo "Releases directory: $TARGET"
+pushd "$TARGET" || exit 1
+{
+  for tag in "$@"
+  do
+    if [ "$DELETE_EXISTING" -eq "1" ]; then
+      if [ -d "$tag" ]; then
+        rm -r "$tag"
+      fi
+    fi
+
+    if [ "$DOWNLOAD_BINARY" -eq "0" ]; then
+
+      if [ ! -d "$tag" ]; then
+        if [ -z $(git tag -l "$tag") ]; then
+          echo "Tag $tag not found"
+          exit 1
+        fi
+
+        git clone https://github.com/bitcoin/bitcoin "$tag"
+        pushd "$tag" || exit 1
+        {
+          git checkout "$tag"
+          if [ "$USE_DEPENDS" -eq "1" ]; then
+            pushd depends || exit 1
+            {
+              if [ "$FUNCTIONAL_TESTS" -eq "1" ]; then
+                make NO_QT=1
+              else
+                make
+              fi
+              HOST="${HOST:-$(./config.guess)}"
+            }
+            popd || exit 1
+            CONFIG_FLAGS="--prefix=$PWD/depends/$HOST $CONFIG_FLAGS"
+          fi
+          ./autogen.sh
+          ./configure $CONFIG_FLAGS
+          make
+          # Move binaries, so they're in the same place as in the release download:
+          mkdir bin
+          mv src/bitcoind src/bitcoin-cli src/bitcoin-tx bin
+          if [ "$FUNCTIONAL_TESTS" -eq "0" ]; then
+            mv src/qt/bitcoin-qt bin
+          fi
+        }
+        popd || exit 1
+      fi
+    else
+      if [ -d "$tag" ]; then
+        echo "Using cached $tag"
+      else
+        mkdir "$tag"
+        URL="https://bitcoin.org/bin/bitcoin-core-${tag:1}/bitcoin-${tag:1}-$PLATFORM.tar.gz"
+        echo "Fetching: $URL"
+        curl -O $URL
+        tar -zxf "bitcoin-${tag:1}-$PLATFORM.tar.gz" -C "$tag" --strip-components=1 "bitcoin-${tag:1}"
+        rm "bitcoin-${tag:1}-$PLATFORM.tar.gz"
+      fi
+    fi
+  done
+}
+popd || exit 1