fix ci and build scripts

Author: ashtum

.drone.star

@@ -15,19 +15,20 @@ def main(ctx):
         # Compilers
         [
             'gcc >=5.0',
-            'clang >=3.8',
+            'clang >=3.9',
             'msvc >=14.1',
             'arm64-gcc latest',
             's390x-gcc latest',
             # 'freebsd-gcc latest',
             'apple-clang *',
             'arm64-clang latest',
             's390x-clang latest',
-            # 'x86-msvc latest'
+            'freebsd-clang latest',
+            'x86-msvc latest'
         ],
         # Standards
         '>=11',
-        packages=['zlib1g', 'zlib1g-dev'])
+        packages=['zlib1g', 'zlib1g-dev', 'libbrotli-dev'])
 
 # from https://github.com/cppalliance/ci-automation
 load("@ci_automation//ci/drone/:functions.star", "linux_cxx", "windows_cxx", "osx_cxx", "freebsd_cxx", "generate")

.drone/drone.bat

@@ -43,13 +43,17 @@ echo using zlib : : : ^<warnings^>off ^; >> !BOOST_ROOT!\project-config.jam
 REM Customizations
 cd
 pushd !BOOST_ROOT!\libs
+git clone https://github.com/cppalliance/rts -b !BOOST_BRANCH! --depth 1
+popd
+pushd !BOOST_ROOT!\libs
 git clone https://github.com/cppalliance/buffers -b !BOOST_BRANCH! --depth 1
 popd
 pushd !BOOST_ROOT!\libs
 git clone https://github.com/cppalliance/http_proto -b !BOOST_BRANCH! --depth 1
 popd
 
 pushd !BOOST_ROOT!
+python tools/boostdep/depinst/depinst.py rts
 python tools/boostdep/depinst/depinst.py buffers
 python tools/boostdep/depinst/depinst.py http_proto
 python tools/boostdep/depinst/depinst.py ws_proto

.drone/drone.sh

@@ -35,6 +35,12 @@ common_install () {
 
   . ./ci/common_install.sh
 
+  if [ ! -d "$BOOST_ROOT/libs/rts" ]; then
+    pushd $BOOST_ROOT/libs
+    git clone https://github.com/cppalliance/rts -b $BOOST_BRANCH --depth 1
+    popd
+  fi
+
   if [ ! -d "$BOOST_ROOT/libs/buffers" ]; then
     pushd $BOOST_ROOT/libs
     git clone https://github.com/cppalliance/buffers -b $BOOST_BRANCH --depth 1
@@ -127,6 +133,12 @@ cp -r $DRONE_BUILD_DIR/* libs/$SELF
 git submodule update --init --recursive
 
 # Customizations
+if [ ! -d "$BOOST_ROOT/libs/rts" ]; then
+  pushd $BOOST_ROOT/libs
+  git clone https://github.com/cppalliance/rts -b $BOOST_BRANCH --depth 1
+  popd
+fi
+
 if [ ! -d "$BOOST_ROOT/libs/buffers" ]; then
   pushd $BOOST_ROOT/libs
   git clone https://github.com/cppalliance/buffers -b $BOOST_BRANCH --depth 1