diff --git a/.travis.yml b/.travis.yml
index 99c8f4c9..8ae249d0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,15 +1,55 @@
+arch:
+- amd64
+- arm64
 language: cpp
-sudo: required
+os: linux
 dist: focal
+addons:
+    apt:
+        packages:
+        - build-essential
+        - cmake
+        - libboost-all-dev
+        - libconfig++-dev
+        - libavcodec-dev
+        - libavutil-dev
+        - libavformat-dev
+        - ffmpeg
+        - libstb-dev
+        - libpstreams-dev
+        - libtag1-dev
+        - libpam0g-dev
+        - libgraphicsmagick++1-dev
+compiler:
+- clang
+- gcc
 before_install:
-- eval "${MATRIX_EVAL}"
-- sudo apt-get install build-essential cmake libboost-all-dev libconfig++-dev libavcodec-dev libavutil-dev libavformat-dev ffmpeg libstb-dev libpstreams-dev libconfig++-dev libpstreams-dev libtag1-dev libpam0g-dev
-- git clone https://github.com/emweb/wt.git wt
-- pushd wt;
-- git checkout 4.4.0
-- cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr && sudo make install
-- popd
-script: cmake -DCMAKE_BUILD_TYPE=Release . && make && make test
+- |
+    if [ ! -d ${HOME}/wt-${WT_VERSION}/include ]; then
+        git clone https://github.com/emweb/wt.git wt
+        cd wt
+        git checkout ${WT_VERSION}
+        cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=${WT_INSTALL_PREFIX} -DENABLE_LIBWTTEST=OFF
+        make install
+        cd ..
+    fi
+script: mkdir build && cd build && cmake -DCMAKE_MODULE_PATH=${WT_INSTALL_PREFIX}/lib/cmake/wt -DCMAKE_BUILD_TYPE=${BUILD_TYPE} -DUSE_PAM=${USE_PAM} -DIMAGE_LIBRARY=${IMAGE_LIBRARY} .. && make && make test
+cache:
+    directories:
+    - ${HOME}/wt-${WT_VERSION}
 env:
-  global:
+    global:
     - MAKEFLAGS="-j 2"
+    - WT_VERSION=4.4.0
+    - WT_INSTALL_PREFIX=${HOME}/wt-${WT_VERSION}
+    jobs:
+    - BUILD_TYPE=Release USE_PAM=ON IMAGE_LIBRARY=STB
+    - BUILD_TYPE=Release USE_PAM=OFF IMAGE_LIBRARY=STB
+    - BUILD_TYPE=Release USE_PAM=OFF IMAGE_LIBRARY=GraphicsMagick++
+    - BUILD_TYPE=Debug USE_PAM=ON IMAGE_LIBRARY=STB
+
+# clang7 is not enough for full c++17 support
+jobs:
+    exclude:
+    - compiler: clang
+      arch: amd64
diff --git a/CMakeLists.txt b/CMakeLists.txt
index e2d8e509..a56f2fa0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.12)
 
 project(lms)
 
-set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/modules/")
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_SOURCE_DIR}/cmake/modules/)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED True)
@@ -14,27 +14,57 @@ find_package(FFMPEGAV REQUIRED)
 find_package(Taglib REQUIRED)
 find_package(Boost REQUIRED COMPONENTS system program_options)
 find_package(PStreams REQUIRED)
+find_package(Wt REQUIRED COMPONENTS Wt Dbo DboSqlite3 HTTP)
 find_package(PAM)
 find_package(STB)
 pkg_check_modules(GRAPHICSMAGICKXX GraphicsMagick++)
 
+# WT
+if (NOT Wt_FOUND)
+	message(FATAL_ERROR "Wt package not found!")
+endif ()
+if (NOT TARGET Wt::Wt)
+	message(FATAL_ERROR "Cannot find Wt::Wt!")
+endif ()
+if (NOT TARGET Wt::Dbo)
+	message(FATAL_ERROR "Cannot find Wt::Dbo!")
+endif ()
+if (NOT TARGET Wt::DboSqlite3)
+	message(FATAL_ERROR "Cannot find Wt::DboSqlite3!")
+endif ()
+if (NOT TARGET Wt::HTTP)
+	message(FATAL_ERROR "Cannot find Wt::HTTP!")
+endif ()
+
+# PAM
+option(USE_PAM "Use the PAM backend authentication API" ON)
+if (USE_PAM AND NOT PAM_FOUND)
+	message(WARNING "PAM library not found: disabling")
+	set(USE_PAM OFF)
+endif ()
+if (USE_PAM)
+	message(STATUS "Using PAM authentication backend")
+else ()
+	message(STATUS "NOT using PAM authentication backend")
+endif ()
+
+# IMAGE
 if (STB_FOUND)
 	set(IMAGE_LIBRARY STB CACHE STRING "STB library")
 elseif (GRAPHICSMAGICKXX_FOUND)
-	set(IMAGE_LIBRARY GraphicksMagick++ CACHE STRING "GraphicsMagick++")
+	set(IMAGE_LIBRARY GraphicsMagick++ CACHE STRING "GraphicsMagick++")
 else ()
 	message(FATAL_ERROR "Cannot find suitable image library")
 endif()
-set_property(CACHE IMAGE_LIBRARY PROPERTY STRINGS GraphicksMagick++ STB)
-
-if (IMAGE_LIBRARY STREQUAL GraphicksMagick++ AND NOT GRAPHICSMAGICKXX_FOUND)
-	message(FATAL_ERROR "GraphicksMagick++ not found")
+set_property(CACHE IMAGE_LIBRARY PROPERTY STRINGS GraphicsMagick++ STB)
+if (IMAGE_LIBRARY STREQUAL GraphicsMagick++ AND NOT GRAPHICSMAGICKXX_FOUND)
+	message(FATAL_ERROR "GraphicsMagick++ not found")
 elseif (IMAGE_LIBRARY STREQUAL STB AND NOT STB_FOUND)
 	message(FATAL_ERROR "STB not found")
 endif ()
-
 message(STATUS "IMAGE_LIBRARY set to ${IMAGE_LIBRARY}")
 
+
 add_subdirectory(src)
 
 install(DIRECTORY approot DESTINATION share/lms)
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 48fae34f..77a11bc0 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -47,7 +47,7 @@ RUN \
 	curl -sLO https://github.com/nothings/stb/archive/${STB_VERSION}.tar.gz && \
 	tar -x --strip-components=1 -f ${STB_VERSION}.tar.gz && \
 	mkdir -p ${PREFIX}/include/stb && \
-	cp *.h ${PREFIX}/include/stb
+	cp ./*.h ${PREFIX}/include/stb
 
 # ffmpeg
 RUN  \
@@ -98,7 +98,7 @@ RUN \
 
 RUN \
 	DIR=/tmp/wt && mkdir -p ${DIR} && cd ${DIR} && \
-	cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=${PREFIX} -DBUILD_EXAMPLES=NO && \
+	cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=${PREFIX} -DBUILD_EXAMPLES=NO -DENABLE_LIBWTTEST=OFF && \
 	make && \
 	make install
 
@@ -117,7 +117,7 @@ RUN \
 
 RUN \
 	DIR=/tmp/lms && mkdir -p ${DIR} && cd ${DIR} && \
-	PKG_CONFIG_PATH=/tmp/install/lib/pkgconfig CXXFLAGS="-I${PREFIX}/include" LDFLAGS="-L${PREFIX}/lib -Wl,--rpath-link=${PREFIX}/lib" cmake . -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=${PREFIX} && \
+	PKG_CONFIG_PATH=/tmp/install/lib/pkgconfig CXXFLAGS="-I${PREFIX}/include" LDFLAGS="-L${PREFIX}/lib -Wl,--rpath-link=${PREFIX}/lib" cmake . -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=${PREFIX} -DCMAKE_MODULE_PATH=${PREFIX}/lib/cmake/wt && \
 	make && \
 	LD_LIBRARY_PATH=${PREFIX}/lib make test && \
 	make install && \
diff --git a/src/libs/auth/CMakeLists.txt b/src/libs/auth/CMakeLists.txt
index a3c18dc8..bceb83c3 100644
--- a/src/libs/auth/CMakeLists.txt
+++ b/src/libs/auth/CMakeLists.txt
@@ -10,7 +10,7 @@ target_include_directories(lmsauth INTERFACE
 	)
 
 target_include_directories(lmsauth PRIVATE
-	include/
+	include
 	)
 
 target_link_libraries(lmsauth PRIVATE
@@ -21,15 +21,15 @@ target_link_libraries(lmsauth PRIVATE
 target_link_libraries(lmsauth PUBLIC
 	pthread
 	Boost::system
-	wt
+	Wt::Wt
 	)
 
-if (PAM_FOUND)
+if (USE_PAM)
 	target_compile_options(lmsauth PRIVATE "-DLMS_SUPPORT_PAM")
 	target_sources(lmsauth PRIVATE impl/pam/PAM.cpp)
 	target_include_directories(lmsauth PRIVATE  ${PAM_INCLUDE_DIR})
 	target_link_libraries(lmsauth PRIVATE ${PAM_LIBRARIES})
-endif (PAM_FOUND)
+endif (USE_PAM)
 
 install(TARGETS lmsauth DESTINATION lib)
 
diff --git a/src/libs/auth/impl/AuthTokenService.hpp b/src/libs/auth/impl/AuthTokenService.hpp
index 00b0b5a8..c63f8193 100644
--- a/src/libs/auth/impl/AuthTokenService.hpp
+++ b/src/libs/auth/impl/AuthTokenService.hpp
@@ -37,9 +37,6 @@ namespace Auth {
 
 			AuthTokenService(std::size_t maxThrottlerEntries);
 
-			AuthTokenService() = default;
-			~AuthTokenService() = default;
-
 			AuthTokenService(const AuthTokenService&) = delete;
 			AuthTokenService& operator=(const AuthTokenService&) = delete;
 			AuthTokenService(AuthTokenService&&) = delete;
diff --git a/src/libs/auth/impl/PasswordService.hpp b/src/libs/auth/impl/PasswordService.hpp
index a5b8784c..ddbb7e31 100644
--- a/src/libs/auth/impl/PasswordService.hpp
+++ b/src/libs/auth/impl/PasswordService.hpp
@@ -38,9 +38,6 @@ namespace Auth {
 
 			PasswordService(std::size_t maxThrottlerEntries);
 
-			PasswordService() = default;
-			~PasswordService() = default;
-
 			PasswordService(const PasswordService&) = delete;
 			PasswordService& operator=(const PasswordService&) = delete;
 			PasswordService(PasswordService&&) = delete;
@@ -48,7 +45,7 @@ namespace Auth {
 
 		private:
 
-			bool isAuthModeSupported(Database::User::AuthMode authMode) const;
+			bool isAuthModeSupported(Database::User::AuthMode authMode) const override;
 			PasswordCheckResult		checkUserPassword(Database::Session& session, const boost::asio::ip::address& clientAddress, const std::string& loginName, const std::string& password) override;
 			Database::User::PasswordHash	hashPassword(const std::string& password) const override;
 			bool				evaluatePasswordStrength(const std::string& loginName, const std::string& password) const override;
diff --git a/src/libs/av/CMakeLists.txt b/src/libs/av/CMakeLists.txt
index ce3fb126..a5c24167 100644
--- a/src/libs/av/CMakeLists.txt
+++ b/src/libs/av/CMakeLists.txt
@@ -11,7 +11,7 @@ target_include_directories(lmsav INTERFACE
 	)
 
 target_include_directories(lmsav PRIVATE
-	include/
+	include
 	${AVCODEC_INCLUDE_DIR}
 	${AVFORMAT_INCLUDE_DIR}
 	${AVUTIL_INCLUDE_DIR}
@@ -19,10 +19,7 @@ target_include_directories(lmsav PRIVATE
 
 target_link_libraries(lmsav PUBLIC
 	lmsutils
-	avformat
-	avutil
 	std::filesystem
-	wt
 	)
 
 target_link_libraries(lmsav PRIVATE
diff --git a/src/libs/cover/CMakeLists.txt b/src/libs/cover/CMakeLists.txt
index e8c8f09c..3365d4a0 100644
--- a/src/libs/cover/CMakeLists.txt
+++ b/src/libs/cover/CMakeLists.txt
@@ -28,7 +28,7 @@ if (IMAGE_LIBRARY STREQUAL STB)
 		)
 	target_compile_options(lmscover PRIVATE "-DLMS_SUPPORT_IMAGE_STB")
 	target_include_directories(lmscover PRIVATE ${STB_INCLUDE_DIR})
-elseif (IMAGE_LIBRARY STREQUAL GraphicksMagick++)
+elseif (IMAGE_LIBRARY STREQUAL GraphicsMagick++)
 	target_sources(lmscover PRIVATE
 		impl/graphicsmagick/JPEGImage.cpp
 		impl/graphicsmagick/RawImage.cpp
diff --git a/src/libs/database/CMakeLists.txt b/src/libs/database/CMakeLists.txt
index 93bcb6f6..00a2ef23 100644
--- a/src/libs/database/CMakeLists.txt
+++ b/src/libs/database/CMakeLists.txt
@@ -24,13 +24,13 @@ target_include_directories(lmsdatabase PRIVATE
 	)
 
 target_link_libraries(lmsdatabase PRIVATE
-	wtdbosqlite3
+	Wt::DboSqlite3
 	)
 
 target_link_libraries(lmsdatabase PUBLIC
 	lmsutils
 	std::filesystem
-	wtdbo
+	Wt::Dbo
 	)
 
 install(TARGETS lmsdatabase DESTINATION lib)
diff --git a/src/libs/database/impl/SqlQuery.cpp b/src/libs/database/impl/SqlQuery.cpp
index c10eaee1..b08cd1ce 100644
--- a/src/libs/database/impl/SqlQuery.cpp
+++ b/src/libs/database/impl/SqlQuery.cpp
@@ -145,7 +145,7 @@ FromClause::FromClause(const std::string& clause)
 FromClause&
 FromClause::And(const FromClause& clause)
 {
-	for (const std::string fromClause : clause._clause)
+	for (const std::string& fromClause : clause._clause)
 	{
 		_clause.push_back(fromClause);
 	}
diff --git a/src/libs/metadata/impl/AvFormatParser.cpp b/src/libs/metadata/impl/AvFormatParser.cpp
index 3da2e720..b55eed4d 100644
--- a/src/libs/metadata/impl/AvFormatParser.cpp
+++ b/src/libs/metadata/impl/AvFormatParser.cpp
@@ -54,7 +54,7 @@ findFirstValueOfAs(const MetadataMap& metadataMap, std::initializer_list<std::st
 	std::vector<std::string> strUuids = StringUtils::splitString(*str, "/");
 	std::vector<UUID> res;
 
-	for (const std::string strUuid : strUuids)
+	for (const std::string& strUuid : strUuids)
 	{
 		std::optional<UUID> uuid {UUID::fromString(strUuid)};
 		if (!uuid)
diff --git a/src/libs/recommendation/CMakeLists.txt b/src/libs/recommendation/CMakeLists.txt
index b33e36c3..7bb9696f 100644
--- a/src/libs/recommendation/CMakeLists.txt
+++ b/src/libs/recommendation/CMakeLists.txt
@@ -12,6 +12,7 @@ target_include_directories(lmsrecommendation INTERFACE
 	)
 
 target_include_directories(lmsrecommendation PRIVATE
+	impl
 	include
 	)
 
@@ -19,10 +20,7 @@ target_link_libraries(lmsrecommendation PRIVATE
 	lmsdatabase
 	lmssom
 	std::filesystem
-	wt
 	)
 
-target_include_directories(lmsrecommendation PRIVATE impl)
-
 install(TARGETS lmsrecommendation DESTINATION lib)
 
diff --git a/src/libs/recommendation/impl/Engine.cpp b/src/libs/recommendation/impl/Engine.cpp
index ca520850..e3986ce5 100644
--- a/src/libs/recommendation/impl/Engine.cpp
+++ b/src/libs/recommendation/impl/Engine.cpp
@@ -265,7 +265,6 @@ Engine::loadClassifier(std::unique_ptr<IClassifier> classifier,
 	}
 
 	_pendingClassifiersCondvar.notify_one();
-
 }
 
 void
diff --git a/src/libs/scanner/CMakeLists.txt b/src/libs/scanner/CMakeLists.txt
index 07f6cf1c..4f5fa30b 100644
--- a/src/libs/scanner/CMakeLists.txt
+++ b/src/libs/scanner/CMakeLists.txt
@@ -22,7 +22,7 @@ target_link_libraries(lmsscanner PRIVATE
 
 target_link_libraries(lmsscanner PUBLIC
 	std::filesystem
-	wt
+	Wt::Wt
 	)
 
 install(TARGETS lmsscanner DESTINATION lib)
diff --git a/src/libs/subsonic/CMakeLists.txt b/src/libs/subsonic/CMakeLists.txt
index 439e6289..e11f5814 100644
--- a/src/libs/subsonic/CMakeLists.txt
+++ b/src/libs/subsonic/CMakeLists.txt
@@ -20,15 +20,15 @@ target_link_libraries(lmssubsonic PRIVATE
 	lmsauth
 	lmsav
 	lmscover
+	lmsdatabase
 	lmsrecommendation
+	lmsscanner
 	lmsutils
 	std::filesystem
 	)
 
 target_link_libraries(lmssubsonic PUBLIC
-	lmsdatabase
-	lmsscanner
-	wt
+	Wt::Wt
 	)
 
 install(TARGETS lmssubsonic DESTINATION lib)
diff --git a/src/libs/utils/CMakeLists.txt b/src/libs/utils/CMakeLists.txt
index 37a21f76..75e11b19 100644
--- a/src/libs/utils/CMakeLists.txt
+++ b/src/libs/utils/CMakeLists.txt
@@ -28,7 +28,7 @@ target_link_libraries(lmsutils PRIVATE
 target_link_libraries(lmsutils PUBLIC
 	Boost::system
 	std::filesystem
-	wt
+	Wt::Wt
 	)
 
 install(TARGETS lmsutils DESTINATION lib)
diff --git a/src/libs/utils/impl/Zipper.cpp b/src/libs/utils/impl/Zipper.cpp
index 0da558f2..33933378 100644
--- a/src/libs/utils/impl/Zipper.cpp
+++ b/src/libs/utils/impl/Zipper.cpp
@@ -35,9 +35,8 @@ namespace Zip
 	class ZipHeader
 	{
 		public:
-			constexpr ZipHeader(std::byte* buffer, SizeType bufferSize)
+			constexpr ZipHeader(std::byte* buffer, SizeType)
 				: _buffer {buffer}
-				, _bufferSize {bufferSize}
 				{}
 
 			enum GeneralPurposeFlag : std::uint16_t
@@ -71,7 +70,6 @@ namespace Zip
 
 		private:
 			std::byte*	_buffer {};
-			const SizeType _bufferSize {};
 	};
 
 	void
diff --git a/src/lms/CMakeLists.txt b/src/lms/CMakeLists.txt
index 3239f633..ba77ba17 100644
--- a/src/lms/CMakeLists.txt
+++ b/src/lms/CMakeLists.txt
@@ -49,8 +49,8 @@ target_link_libraries(lms PRIVATE
 	lmsscanner
 	lmssubsonic
 	lmsutils
-	wt
-	wthttp
+	Wt::Wt
+	Wt::HTTP
 	)
 
 install(TARGETS lms DESTINATION bin)