diff --git a/.drone.star b/.drone.star
new file mode 100644
index 0000000..0a5a8fb
--- /dev/null
+++ b/.drone.star
@@ -0,0 +1,24 @@
+# Use, modification, and distribution are
+# subject to the Boost Software License, Version 1.0. (See accompanying
+# file LICENSE.txt)
+#
+# Copyright Rene Rivera 2020.
+
+# For Drone CI we use the Starlark scripting language to reduce duplication.
+# As the yaml syntax for Drone CI is rather limited.
+#
+#
+globalenv={}
+linuxglobalimage="cppalliance/droneubuntu1604:1"
+windowsglobalimage="cppalliance/dronevs2019"
+
+def main(ctx):
+  return [
+  linux_cxx("GCC-8", "g++", packages="g++-8", buildtype="empty-c9a1002e88", buildscript="drone", image=linuxglobalimage, environment={'B2_ARGS': 'cxxstd=98,03,11,14,1z toolset=gcc-8 cxxflags="--coverage -fsanitize=address,leak,undefined -fno-sanitize-recover=undefined -DBOOST_TRAVISCI_BUILD" linkflags="--coverage  -lasan -lubsan"', 'GCOVTOOL': 'gcov-8', 'DRONE_JOB_UUID': 'b6589fc6ab'}, globalenv=globalenv, privileged=True),
+  linux_cxx("GCC-4.6", "g++", packages="g++-4.6", buildtype="empty-c9a1002e88", buildscript="drone", image=linuxglobalimage, environment={'B2_ARGS': 'cxxstd=98,0x toolset=gcc-4.6 cxxflags="--coverage -DBOOST_TRAVISCI_BUILD" linkflags="--coverage"', 'GCOVTOOL': 'gcov-4.6', 'DRONE_JOB_UUID': '356a192b79'}, globalenv=globalenv, privileged=True),
+  linux_cxx("Clang-7", "g++", packages="clang++-7", llvm_os="xenial", llvm_ver="7", buildtype="empty-c9a1002e88", buildscript="drone", image=linuxglobalimage, environment={'B2_ARGS': 'cxxstd=98,03,11,14,1z toolset=clang-7 cxxflags="--coverage -fsanitize=address,leak,undefined -fno-sanitize-recover=undefined -DBOOST_TRAVISCI_BUILD" linkflags="--coverage -fsanitize=address,leak,undefined"', 'GCOVTOOL': 'gcov_for_clang.sh', 'DRONE_JOB_UUID': 'da4b9237ba'}, globalenv=globalenv, privileged=True),
+  linux_cxx("Clang-3.8, libc++", "g++", packages="libc++-dev", buildtype="empty-c9a1002e88", buildscript="drone", image=linuxglobalimage, environment={'B2_ARGS': 'cxxstd=03,11,14 toolset=clang-libc++ cxxflags="--coverage -fsanitize=address,leak,undefined -fno-sanitize-recover=undefined -DBOOST_TRAVISCI_BUILD" linkflags="--coverage -fsanitize=address,leak,undefined"', 'GCOVTOOL': 'gcov_for_clang.sh', 'DRONE_JOB_UUID': '77de68daec'}, globalenv=globalenv, privileged=True),
+    ]
+
+# from https://github.com/boostorg/boost-ci
+load("@boost_ci//ci/drone/:functions.star", "linux_cxx","windows_cxx","osx_cxx","freebsd_cxx")
diff --git a/.drone/after-success.sh b/.drone/after-success.sh
new file mode 100755
index 0000000..4f20f63
--- /dev/null
+++ b/.drone/after-success.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+
+# Copyright 2020 Rene Rivera, Sam Darwin
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE.txt or copy at http://boost.org/LICENSE_1_0.txt)
+
+if [ "$DRONE_JOB_UUID" = "b6589fc6ab" ] || [ "$DRONE_JOB_UUID" = "356a192b79" ] || [ "$DRONE_JOB_UUID" = "da4b9237ba" ] || [ "$DRONE_JOB_UUID" = "77de68daec" ] ; then
+    mkdir -p $TRAVIS_BUILD_DIR/coverals
+    find ../../../bin.v2/ -name "*.gcda" -exec cp "{}" $TRAVIS_BUILD_DIR/coverals/ \;
+    find ../../../bin.v2/ -name "*.gcno" -exec cp "{}" $TRAVIS_BUILD_DIR/coverals/ \;
+    find ../../../bin.v2/ -name "*.da" -exec cp "{}" $TRAVIS_BUILD_DIR/coverals/ \;
+    find ../../../bin.v2/ -name "*.no" -exec cp "{}" $TRAVIS_BUILD_DIR/coverals/ \;
+    wget https://github.com/linux-test-project/lcov/archive/v1.14.zip
+    unzip v1.14.zip
+    LCOV="`pwd`/lcov-1.14/bin/lcov --gcov-tool $GCOVTOOL"
+    mkdir -p ~/.local/bin
+    echo -e '#!/bin/bash\nexec llvm-cov gcov "$@"' > ~/.local/bin/gcov_for_clang.sh
+    chmod 755 ~/.local/bin/gcov_for_clang.sh
+    echo "$LCOV --directory $TRAVIS_BUILD_DIR/coverals --base-directory `pwd` --capture --output-file $TRAVIS_BUILD_DIR/coverals/coverage.info"
+    $LCOV --directory $TRAVIS_BUILD_DIR/coverals --base-directory `pwd` --capture --output-file $TRAVIS_BUILD_DIR/coverals/coverage.info
+    cd $BOOST
+    $LCOV --remove $TRAVIS_BUILD_DIR/coverals/coverage.info "/usr*" "*/$BOOST_LIBS_FOLDER/test/*" $IGNORE_COVERAGE "*/$BOOST_LIBS_FOLDER/tests/*" "*/$BOOST_LIBS_FOLDER/examples/*" "*/$BOOST_LIBS_FOLDER/example/*" -o $TRAVIS_BUILD_DIR/coverals/coverage.info
+    OTHER_LIBS=`grep "submodule .*" .gitmodules | sed 's/\[submodule\ "\(.*\)"\]/"\*\/boost\/\1\.hpp" "\*\/boost\/\1\/\*"/g'| sed "/\"\*\/boost\/$BOOST_LIBS_FOLDER\/\*\"/d" | sed ':a;N;$!ba;s/\n/ /g'`
+    echo $OTHER_LIBS
+    eval "$LCOV --remove $TRAVIS_BUILD_DIR/coverals/coverage.info $OTHER_LIBS -o $TRAVIS_BUILD_DIR/coverals/coverage.info"
+    cd $TRAVIS_BUILD_DIR
+    gem install coveralls-lcov || echo "ERROR. Failed to install coveralls-lcov"
+    coveralls-lcov coverals/coverage.info
+fi
+
diff --git a/.drone/before-install.sh b/.drone/before-install.sh
new file mode 100755
index 0000000..2148ff3
--- /dev/null
+++ b/.drone/before-install.sh
@@ -0,0 +1,37 @@
+#!/bin/bash
+
+# Copyright 2020 Rene Rivera, Sam Darwin
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE.txt or copy at http://boost.org/LICENSE_1_0.txt)
+
+if [ "$DRONE_JOB_UUID" = "b6589fc6ab" ] || [ "$DRONE_JOB_UUID" = "356a192b79" ] || [ "$DRONE_JOB_UUID" = "da4b9237ba" ] || [ "$DRONE_JOB_UUID" = "77de68daec" ] ; then
+    BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
+    IGNORE_COVERAGE=''
+    BOOST_LIBS_FOLDER=$(basename $REPO_NAME)
+    UBSAN_OPTIONS=print_stacktrace=1
+    LSAN_OPTIONS=verbosity=1:log_threads=1
+    BOOST=$HOME/boost-local
+    git clone -b $BOOST_BRANCH --depth 10 https://github.com/boostorg/boost.git $BOOST
+    cd $BOOST
+    git submodule update --init --depth 10 --jobs 2 tools/build tools/boostdep tools/inspect libs/filesystem
+    python tools/boostdep/depinst/depinst.py --git_args "--depth 10 --jobs 2" $BOOST/libs/filesystem
+    echo "Testing $BOOST/libs/$BOOST_LIBS_FOLDER moved from $TRAVIS_BUILD_DIR, branch $BOOST_BRANCH"
+    rm -rf $BOOST/libs/$BOOST_LIBS_FOLDER || true
+    cp -rp $TRAVIS_BUILD_DIR $BOOST/libs/$BOOST_LIBS_FOLDER
+    python tools/boostdep/depinst/depinst.py --git_args "--depth 10 --jobs 2" $BOOST_LIBS_FOLDER
+    git status
+    ./bootstrap.sh
+    ./b2 headers
+    ./b2 -j4 variant=debug tools/inspect/build
+    echo "using gcc ;" >> ~/user-config.jam
+    echo "using clang ;" >> ~/user-config.jam
+    echo "using clang : 3.8 : clang++-3.8 ;" >> ~/user-config.jam
+    echo "using clang : 4 : clang++-4.0 ;" >> ~/user-config.jam
+    echo "using clang : 5 : clang++-5.0 ;" >> ~/user-config.jam
+    echo "using clang : 6 : clang++-6.0 ;" >> ~/user-config.jam
+    echo "using clang : 7 : clang++-7 ;" >> ~/user-config.jam
+    echo "using clang : 8 : clang++-8 ;" >> ~/user-config.jam
+    echo "using clang : libc++ : clang++-libc++ ;" >> ~/user-config.jam
+    cd $BOOST/libs/$BOOST_LIBS_FOLDER/test/
+fi
+
diff --git a/.drone/drone.sh b/.drone/drone.sh
new file mode 100755
index 0000000..43cebfd
--- /dev/null
+++ b/.drone/drone.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# Copyright 2020 Rene Rivera, Sam Darwin
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE.txt or copy at http://boost.org/LICENSE_1_0.txt)
+
+set -e
+set -x
+export TRAVIS_BUILD_DIR=$(pwd)
+export DRONE_BUILD_DIR=$(pwd)
+export TRAVIS_BRANCH=$DRONE_BRANCH
+export VCS_COMMIT_ID=$DRONE_COMMIT
+export GIT_COMMIT=$DRONE_COMMIT
+export REPO_NAME=$DRONE_REPO
+export PATH=~/.local/bin:/usr/local/bin:$PATH
+
+if [ "$DRONE_JOB_BUILDTYPE" == "empty-c9a1002e88" ]; then
+
+echo '==================================> BEFORE_INSTALL'
+
+. .drone/before-install.sh
+
+echo '==================================> INSTALL'
+
+
+
+echo '==================================> SCRIPT'
+
+sh -c "../../../b2 -j2 $B2_ARGS"
+../../../dist/bin/inspect .. -license -copyright -crlf -end -path_name -tab -ascii -apple_macro -assert_macro -deprecated_macro -minmax -unnamed
+
+echo '==================================> AFTER_SUCCESS'
+
+. $DRONE_BUILD_DIR/.drone/after-success.sh
+
+fi