i#5505 kernel memtrace: Add submodule libipt & Initialize submodules all the time

.github/workflows/ci-package.yml

@@ -59,6 +59,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+      with:
+        submodules: true
 
     - name: Fetch Sources
       run: |

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "third_party/libipt"]
+    path = third_party/libipt
+    url = https://github.com/intel/libipt.git

api/docs/building.dox

@@ -47,7 +47,7 @@ To build DynamoRIO on Linux, use the following commands as a guide.  This builds
   # other distributions (in particular, use "cmake3" for Ubuntu Trusty).
   $ sudo apt-get install cmake g++ g++-multilib doxygen git zlib1g-dev libunwind-dev libsnappy-dev liblz4-dev
   # Get sources.
-  $ git clone https://github.com/DynamoRIO/dynamorio.git
+  $ git clone --recurse https://github.com/DynamoRIO/dynamorio.git
   # Make a separate build directory.  Building in the source directory is not
   # supported.
   $ cd dynamorio && mkdir build && cd build

make/git/devsetup.sh

@@ -52,6 +52,9 @@ git config alias.pullall "!myf() { make/git/git_pullall.sh \"\$@\"; }; myf"
 # Commit template
 git config commit.template make/git/commit-template.txt
 
+# Update and initialize submodules
+git submodule update --init --recursive
+
 # Set up hooks
 cp make/git/hook-pre-commit-launch.sh .git/hooks/pre-commit
 cp make/git/hook-commit-msg-launch.sh .git/hooks/commit-msg

make/git/git_pullall.sh

@@ -44,6 +44,8 @@ if test -z "${has_remote}"; then
 else
     echo "First, updating with rebase from remote ${branch}."
     git pull --rebase origin ${branch}
+    echo "\nSecond, updating submodules."
+    git submodule update --init --recursive
     echo -e "\nNow, merging changes from master."
     git pull --no-rebase --prune
 fi