From 58f3a0002cdfbf1292673c2795b2c6fa91ae5afb Mon Sep 17 00:00:00 2001
From: Yashwant <yashwantsingh.sngh@gmail.com>
Date: Thu, 24 Dec 2020 13:09:38 +0530
Subject: [PATCH] Scheduled cron GH-action workflow for updating Boost version.

---
 .github/workflows/update-boost-version.yaml | 81 +++++++++++++++++++++
 CMakeLists.txt                              |  4 +-
 2 files changed, 83 insertions(+), 2 deletions(-)
 create mode 100644 .github/workflows/update-boost-version.yaml

diff --git a/.github/workflows/update-boost-version.yaml b/.github/workflows/update-boost-version.yaml
new file mode 100644
index 0000000000..32d91fed64
--- /dev/null
+++ b/.github/workflows/update-boost-version.yaml
@@ -0,0 +1,81 @@
+name: Update Boost Version
+on:
+  workflow_dispatch:
+  schedule:
+    - cron:  '0 10 * * *'
+jobs:
+  updateBoostVersion:
+    if: ${{ github.repository == 'mlpack/mlpack' }}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Build Dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --allow-unauthenticated libopenblas-dev liblapack-dev g++ libboost-all-dev libcereal-dev
+          curl https://data.kurg.org/armadillo-8.400.0.tar.xz | tar -xvJ && cd armadillo*
+          cmake . && make && sudo make install && cd ..
+
+      - name: Get Latest Boost Tagged Release
+        id: boost-version
+        run: |
+          # CMake for extracting present boost version.
+          mkdir build && cd build
+          cmake ..
+
+          # Ping version information upstream.
+          BOOST_RELEASE_JSON=$(curl -sL https://api.github.com/repos/boostorg/boost/tags)
+          FOUND_NEW="NO"
+
+          # Compare present and upstream boost version.
+          for i in `jq -r .[].name <<< "$BOOST_RELEASE_JSON" | awk '!/.beta/' | \
+              grep -Po "(\d+\.)+\d+"`
+          do
+            FOUND_SIMILAR="NO"
+            for j in `grep Boost_ADDITIONAL_VERSIONS_LAST CMakeCache.txt | \
+                cut -d "=" -f2 | sed "s/;/ /g"`
+            do
+              if [[ "$i" == "$j" ]];
+              then
+                FOUND_SIMILAR="YES"
+                break
+              fi
+            done
+            if [[ "$FOUND_SIMILAR" != "YES" ]];
+            then
+              FOUND_NEW="YES"
+              BOOST_VERSION="$BOOST_VERSION\"$i\" "
+            fi
+            FOUND_SIMILAR="NO"
+            for j in `grep Boost_ADDITIONAL_VERSIONS_LAST CMakeCache.txt | \
+                cut -d "=" -f2 | sed "s/;/ /g"`
+            do
+              if [[ $(echo $i | grep -Po "(\d+)\.\d+") == "$j" ]];
+              then
+                FOUND_SIMILAR="YES"
+                break
+              fi
+            done
+            if [[ "$FOUND_SIMILAR" != "YES" ]];
+            then
+              FOUND_NEW="YES"
+              BOOST_VERSION="$BOOST_VERSION\"$(echo $i | grep -Po "(\d+)\.\d+")\" "
+            fi
+          done
+
+          # If found the new boost version, then update the CMake script.
+          if [[ "$FOUND_NEW" == "YES" ]]
+          then
+            sed --in-place "s/set(Boost_ADDITIONAL_VERSIONS/set(Boost_ADDITIONAL_VERSIONS\n  ${BOOST_VERSION: : -1}/" ../CMakeLists.txt
+          fi
+
+      - name: Create Pull Request For Boost Version
+        uses: peter-evans/create-pull-request@v3
+        with:
+          commit-message: Upgrade Boost Version in CMake script.
+          title: Upgrade Boost Version in CMake script.
+          body: |
+            Updates [boostorg/boost](https://github.com/boostorg/boost) in CMake script.
+            Auto-generated by [create-pull-request](https://github.com/peter-evans/create-pull-request).
+          labels: update dependencies, automated PR
+          branch: boost-version-updates
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a184ca588a..2cc7a64abc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -419,8 +419,8 @@ set(MLPACK_INCLUDE_DIRS ${MLPACK_INCLUDE_DIRS} ${CEREAL_INCLUDE_DIR})
 # Unfortunately this configuration variable is necessary and will need to be
 # updated as time goes on and new versions are released.
 set(Boost_ADDITIONAL_VERSIONS
-  "1.74.0" "1.74"  
-  "17.3.0" "17.3"		
+  "1.74.0" "1.74"
+  "1.73.0" "1.73"
   "1.72.0" "1.72"
   "1.71.0" "1.71"
   "1.70.0" "1.70"