diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3000306a7..9ce3e372e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -193,10 +193,6 @@ endif()
 set(CMAKE_FOLDER "third-party")
 
 find_package(Fmt)
-add_definitions(
-    -DFMT_HEADER_ONLY
-    -DFMT_EXCEPTIONS=0)
-
 find_package(WideInteger)
 find_package(FastFloat)
 find_package(UtfCpp)
@@ -204,15 +200,16 @@ find_package(Threads)
 find_package(PkgConfig QUIET)
 
 find_package(CURL ${CURL_MINIMUM} REQUIRED)
-if(TARGET CURL::libcurl)
-    set(CURL_LIBRARIES CURL::libcurl)
-    set(CURL_INCLUDE_DIRS)
+if(NOT TARGET CURL::libcurl)
+    add_library(CURL::libcurl INTERFACE IMPORTED)
+    target_link_libraries(CURL::libcurl INTERFACE ${CURL_LIBRARIES})
+    target_include_directories(CURL::libcurl INTERFACE ${CURL_INCLUDE_DIRS})
 endif()
 
 if(NOT WIN32)
-    find_package(ICONV)
+    find_package(Iconv)
 else()
-    set(ICONV_FOUND OFF)
+    set(Iconv_FOUND OFF)
 endif()
 
 set(CRYPTO_PKG "")
@@ -259,6 +256,7 @@ if(WITH_CRYPTO STREQUAL "AUTO" OR WITH_CRYPTO STREQUAL "mbedtls")
         set(CRYPTO_LIBRARIES ${MBEDTLS_LIBRARIES})
     endif()
 endif()
+
 # We should have found the library by now
 if(CRYPTO_PKG STREQUAL "")
     if(WITH_CRYPTO STREQUAL "AUTO")
@@ -266,6 +264,16 @@ if(CRYPTO_PKG STREQUAL "")
     else()
         message(FATAL_ERROR "Requested crypto library '${WITH_CRYPTO}' is not supported.")
     endif()
+else()
+    add_library(transmission::crypto_impl INTERFACE IMPORTED)
+
+    target_include_directories(transmission::crypto_impl
+        INTERFACE
+            ${CRYPTO_INCLUDE_DIRS})
+
+    target_link_libraries(transmission::crypto_impl
+        INTERFACE
+            ${CRYPTO_LIBRARIES})
 endif()
 
 if(ENABLE_GTK)
@@ -306,6 +314,26 @@ else()
     set(WITH_APPINDICATOR OFF)
 endif()
 
+if(GTK_FOUND)
+    add_library(transmission::gtk_impl INTERFACE IMPORTED)
+
+    target_compile_options(transmission::gtk_impl
+        INTERFACE
+            ${GTK${GTK_VERSION}_CFLAGS_OTHER})
+
+    target_include_directories(transmission::gtk_impl
+        INTERFACE
+            ${GTK${GTK_VERSION}_INCLUDE_DIRS})
+
+    target_link_directories(transmission::gtk_impl
+        INTERFACE
+            ${GTK${GTK_VERSION}_LIBRARY_DIRS})
+
+    target_link_libraries(transmission::gtk_impl
+        INTERFACE
+            ${GTK${GTK_VERSION}_LIBRARIES})
+endif()
+
 if(ENABLE_QT)
     tr_get_required_flag(ENABLE_QT QT_IS_REQUIRED)
 
@@ -388,6 +416,14 @@ if(ENABLE_QT)
     tr_fixup_auto_option(ENABLE_QT QT_FOUND QT_IS_REQUIRED)
 endif()
 
+if(QT_FOUND)
+    add_library(transmission::qt_impl INTERFACE IMPORTED)
+
+    target_link_libraries(transmission::qt_impl
+        INTERFACE
+            ${QT_TARGETS})
+endif()
+
 if(ENABLE_MAC)
     tr_get_required_flag(ENABLE_MAC MAC_IS_REQUIRED)
 
@@ -405,12 +441,14 @@ endif()
 
 set(THIRD_PARTY_DIR ${CMAKE_SOURCE_DIR}/third-party)
 
-tr_add_external_auto_library(DEFLATE libdeflate deflate)
+tr_add_external_auto_library(DEFLATE libdeflate deflate
+    TARGET deflate::deflate)
 if(NOT USE_SYSTEM_DEFLATE)
     set(DEFLATE_VERSION ${DEFLATE_MINIMUM})
 endif()
 
 tr_add_external_auto_library(EVENT2 libevent event
+    TARGET libevent::event
     CMAKE_ARGS
         -DEVENT__DISABLE_OPENSSL:BOOL=ON
         -DEVENT__DISABLE_BENCHMARK:BOOL=ON
@@ -419,49 +457,51 @@ tr_add_external_auto_library(EVENT2 libevent event
         -DEVENT__DISABLE_SAMPLES:BOOL=ON
         -DEVENT__LIBRARY_TYPE:STRING=STATIC)
 
-tr_add_external_auto_library(NATPMP libnatpmp natpmp)
+tr_add_external_auto_library(NATPMP libnatpmp natpmp
+    TARGET natpmp::natpmp)
 if(NOT USE_SYSTEM_NATPMP)
-    set(NATPMP_DEFINITIONS NATPMP_STATICLIB)
+    target_compile_definitions(natpmp::natpmp
+        INTERFACE
+            NATPMP_STATICLIB)
 endif()
 
 tr_add_external_auto_library(MINIUPNPC miniupnpc miniupnpc
+    TARGET miniupnpc::libminiupnpc
     CMAKE_ARGS
         -DUPNPC_BUILD_STATIC=ON
         -DUPNPC_BUILD_SHARED=OFF
         -DUPNPC_BUILD_TESTS=OFF)
-set(MINIUPNPC_DEFINITIONS SYSTEM_MINIUPNP)
 if(NOT USE_SYSTEM_MINIUPNPC)
-    list(APPEND MINIUPNPC_DEFINITIONS MINIUPNP_STATICLIB)
+    target_compile_definitions(miniupnpc::libminiupnpc
+        INTERFACE
+            MINIUPNP_STATICLIB)
+
     set(MINIUPNPC_VERSION 1.9)
     set(MINIUPNPC_API_VERSION 12)
 endif()
 
+target_compile_definitions(miniupnpc::libminiupnpc
+    INTERFACE
+        SYSTEM_MINIUPNP
+        $<$<VERSION_LESS:${MINIUPNPC_VERSION},1.7>:MINIUPNPC_API_VERSION=${MINIUPNPC_API_VERSION}>) # API version macro was only added in 1.7
+
 add_subdirectory(third-party/jsonsl)
 add_subdirectory(third-party/wildmat)
 
-tr_add_external_auto_library(DHT dht dht)
+tr_add_external_auto_library(DHT dht dht
+    TARGET dht::dht)
 
-tr_add_external_auto_library(PSL libpsl psl)
+tr_add_external_auto_library(PSL libpsl psl
+    TARGET psl::psl)
 
 if(ENABLE_UTP)
     tr_add_external_auto_library(UTP libutp utp
+        TARGET libutp::libutp
         CMAKE_ARGS -DLIBUTP_BUILD_PROGRAMS=OFF)
-
-    if(UTP_UPSTREAM_TARGET)
-        # Use C++ linker for anything that depends on static libutp
-        # TODO: switch to imported targets for all the dependencies
-        add_library(UTP::UTP STATIC IMPORTED)
-        set_property(
-            TARGET UTP::UTP
-            PROPERTY IMPORTED_LOCATION "${UTP_LIBRARIES}")
-        set_property(
-            TARGET UTP::UTP
-            PROPERTY IMPORTED_LINK_INTERFACE_LANGUAGES "CXX")
-        set(UTP_LIBRARIES UTP::UTP)
-    endif()
 endif()
 
-tr_add_external_auto_library(B64 libb64 b64)
+tr_add_external_auto_library(B64 libb64 b64
+    TARGET libb64::libb64)
 
 if(WITH_INOTIFY)
     tr_get_required_flag(WITH_INOTIFY INOTIFY_IS_REQUIRED)
diff --git a/cli/CMakeLists.txt b/cli/CMakeLists.txt
index b38e7b8b5..bb7cd8d7a 100644
--- a/cli/CMakeLists.txt
+++ b/cli/CMakeLists.txt
@@ -4,18 +4,10 @@ target_sources(${TR_NAME}-cli
     PRIVATE
         cli.cc)
 
-target_include_directories(${TR_NAME}-cli
-    PRIVATE
-        ${CMAKE_SOURCE_DIR})
-
-target_include_directories(${TR_NAME}-cli SYSTEM
-    PRIVATE
-        ${LIBFMT_INCLUDE_DIRS}
-        ${CURL_INCLUDE_DIRS})
-
 target_link_libraries(${TR_NAME}-cli
     PRIVATE
-        ${TR_NAME})
+        ${TR_NAME}
+        fmt::fmt-header-only)
 
 tr_win32_app_info(${TR_NAME}-cli
     "Transmission Utility ('cli', obsolete)"
diff --git a/cmake/FindFastFloat.cmake b/cmake/FindFastFloat.cmake
index 67f3aadb2..4ce540e2f 100644
--- a/cmake/FindFastFloat.cmake
+++ b/cmake/FindFastFloat.cmake
@@ -1 +1,5 @@
-set(FAST_FLOAT_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/third-party/fast_float/include)
+add_library(FastFloat::fast_float INTERFACE IMPORTED)
+
+target_include_directories(FastFloat::fast_float
+    INTERFACE
+        ${CMAKE_CURRENT_LIST_DIR}/../third-party/fast_float/include)
diff --git a/cmake/FindFmt.cmake b/cmake/FindFmt.cmake
index 8e8b70b63..f1c42486d 100644
--- a/cmake/FindFmt.cmake
+++ b/cmake/FindFmt.cmake
@@ -1 +1,10 @@
-set(LIBFMT_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/third-party/fmt/include)
+add_library(fmt::fmt-header-only INTERFACE IMPORTED)
+
+target_include_directories(fmt::fmt-header-only
+    INTERFACE
+        ${CMAKE_CURRENT_LIST_DIR}/../third-party/fmt/include)
+
+target_compile_definitions(fmt::fmt-header-only
+    INTERFACE
+        FMT_EXCEPTIONS=0
+        FMT_HEADER_ONLY=1)
diff --git a/cmake/FindICONV.cmake b/cmake/FindICONV.cmake
deleted file mode 100644
index 213a95f14..000000000
--- a/cmake/FindICONV.cmake
+++ /dev/null
@@ -1,51 +0,0 @@
-# Grabbed from http://public.kitware.com/Bug/view.php?id=13517 and slightly modified.
-
-find_path(ICONV_INCLUDE_DIR
-    NAMES iconv.h)
-find_library(ICONV_LIBRARY
-    NAMES
-        iconv
-        libiconv
-        libiconv-2
-        c)
-
-set(ICONV_INCLUDE_DIRS ${ICONV_INCLUDE_DIR})
-set(ICONV_LIBRARIES ${ICONV_LIBRARY})
-
-include(FindPackageHandleStandardArgs)
-
-find_package_handle_standard_args(ICONV
-    REQUIRED_VARS
-        ICONV_LIBRARY
-        ICONV_INCLUDE_DIR
-    VERSION_VAR ICONV_VERSION)
-
-if(ICONV_FOUND AND NOT DEFINED ICONV_SECOND_ARGUMENT_IS_CONST)
-    include(CheckCXXSourceCompiles)
-
-    set(CMAKE_REQUIRED_INCLUDES ${ICONV_INCLUDE_DIRS})
-    set(CMAKE_REQUIRED_LIBRARIES ${ICONV_LIBRARIES})
-
-    check_cxx_source_compiles("
-        #include <iconv.h>
-        int main()
-        {
-            iconv_t conv = 0;
-            const char * in = 0;
-            size_t ilen = 0;
-            char * out = 0;
-            size_t olen = 0;
-            iconv(conv, &in, &ilen, &out, &olen);
-            return 0;
-        }"
-        ICONV_SECOND_ARGUMENT_IS_CONST
-        FAIL_REGEX "discards qualifiers in nested pointer types"
-        FAIL_REGEX "incompatible pointer type"
-        FAIL_REGEX "invalid conversion"
-        FAIL_REGEX "no matching function")
-
-    set(CMAKE_REQUIRED_INCLUDES)
-    set(CMAKE_REQUIRED_LIBRARIES)
-endif()
-
-mark_as_advanced(ICONV_INCLUDE_DIR ICONV_LIBRARY ICONV_SECOND_ARGUMENT_IS_CONST)
diff --git a/cmake/FindUtfCpp.cmake b/cmake/FindUtfCpp.cmake
index 80384d66a..b1250039c 100644
--- a/cmake/FindUtfCpp.cmake
+++ b/cmake/FindUtfCpp.cmake
@@ -1 +1,5 @@
-set(UTFCPP_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/third-party/utfcpp/source)
+add_library(utf8::cpp INTERFACE IMPORTED)
+
+target_include_directories(utf8::cpp
+    INTERFACE
+        ${CMAKE_CURRENT_LIST_DIR}/../third-party/utfcpp/source)
diff --git a/cmake/FindWideInteger.cmake b/cmake/FindWideInteger.cmake
index a1cdc0658..b4e44d78f 100644
--- a/cmake/FindWideInteger.cmake
+++ b/cmake/FindWideInteger.cmake
@@ -1 +1,5 @@
-set(WIDE_INTEGER_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/third-party/wide-integer)
+add_library(WideInteger::WideInteger INTERFACE IMPORTED)
+
+target_include_directories(WideInteger::WideInteger
+    INTERFACE
+        ${CMAKE_CURRENT_LIST_DIR}/../third-party/wide-integer)
diff --git a/cmake/TrMacros.cmake b/cmake/TrMacros.cmake
index e1ed88bb4..509d9c305 100644
--- a/cmake/TrMacros.cmake
+++ b/cmake/TrMacros.cmake
@@ -129,6 +129,8 @@ function(tr_process_list_conditions VAR_PREFIX)
 endfunction()
 
 macro(tr_add_external_auto_library ID DIRNAME LIBNAME)
+    cmake_parse_arguments(_TAEAL_ARG "" "TARGET" "CMAKE_ARGS" ${ARGN})
+
     if(USE_SYSTEM_${ID})
         tr_get_required_flag(USE_SYSTEM_${ID} SYSTEM_${ID}_IS_REQUIRED)
         find_package(${ID} ${${ID}_MINIMUM} ${SYSTEM_${ID}_IS_REQUIRED})
@@ -161,7 +163,6 @@ macro(tr_add_external_auto_library ID DIRNAME LIBNAME)
         ExternalProject_Add(
             ${${ID}_UPSTREAM_TARGET}
             URL "${CMAKE_SOURCE_DIR}/third-party/${DIRNAME}"
-            ${ARGN}
             PREFIX "${${ID}_PREFIX}"
             CMAKE_ARGS
                 -Wno-dev # We don't want to be warned over unused variables
@@ -175,9 +176,29 @@ macro(tr_add_external_auto_library ID DIRNAME LIBNAME)
                 "-DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>"
                 "-DCMAKE_INSTALL_LIBDIR:STRING=lib"
                 ${${ID}_EXT_PROJ_CMAKE_ARGS}
+                ${_TAEAL_ARG_CMAKE_ARGS}
             BUILD_BYPRODUCTS "${${ID}_LIBRARY}")
 
         set_property(TARGET ${${ID}_UPSTREAM_TARGET} PROPERTY FOLDER "third-party")
+
+        # Imported target (below) requires include directories to be present at configuration time
+        file(MAKE_DIRECTORY ${${ID}_INCLUDE_DIRS})
+    endif()
+
+    if(_TAEAL_ARG_TARGET)
+        add_library(${_TAEAL_ARG_TARGET} INTERFACE IMPORTED)
+
+        target_include_directories(${_TAEAL_ARG_TARGET}
+            INTERFACE
+                ${${ID}_INCLUDE_DIRS})
+
+        target_link_libraries(${_TAEAL_ARG_TARGET}
+            INTERFACE
+                ${${ID}_LIBRARIES})
+
+        if(${ID}_UPSTREAM_TARGET)
+            add_dependencies(${_TAEAL_ARG_TARGET} ${${ID}_UPSTREAM_TARGET})
+        endif()
     endif()
 endmacro()
 
diff --git a/daemon/CMakeLists.txt b/daemon/CMakeLists.txt
index 4e1a08b19..9a966b09d 100644
--- a/daemon/CMakeLists.txt
+++ b/daemon/CMakeLists.txt
@@ -26,21 +26,15 @@ tr_target_compile_definitions_for_functions(${TR_NAME}-daemon
         daemon
         syslog)
 
-target_include_directories(${TR_NAME}-daemon
-    PRIVATE
-        ${CMAKE_SOURCE_DIR})
-
 target_include_directories(${TR_NAME}-daemon SYSTEM
     PRIVATE
-        ${LIBFMT_INCLUDE_DIRS}
-        ${CURL_INCLUDE_DIRS}
-        ${EVENT2_INCLUDE_DIRS}
         $<$<BOOL:${WITH_SYSTEMD}>:${SYSTEMD_INCLUDE_DIRS}>)
 
 target_link_libraries(${TR_NAME}-daemon
     PRIVATE
         ${TR_NAME}
-        ${EVENT2_LIBRARIES}
+        libevent::event
+        fmt::fmt-header-only
         $<$<BOOL:${WITH_SYSTEMD}>:${SYSTEMD_LIBRARIES}>)
 
 tr_win32_app_info(${TR_NAME}-daemon
diff --git a/gtk/CMakeLists.txt b/gtk/CMakeLists.txt
index 54fd0df38..54c4ab6c4 100644
--- a/gtk/CMakeLists.txt
+++ b/gtk/CMakeLists.txt
@@ -101,10 +101,6 @@ target_sources(${TR_NAME}-gtk
 source_group(Ui/GTK4
     REGULAR_EXPRESSION [[ui/gtk4/.*\.ui$]])
 
-target_link_directories(${TR_NAME}-gtk
-    PRIVATE
-        ${GTK${GTK_VERSION}_LIBRARY_DIRS})
-
 if(WITH_APPINDICATOR)
     set_property(
         SOURCE SystemTrayIcon.cc
@@ -170,29 +166,22 @@ target_compile_definitions(${TR_NAME}-gtk
 
 target_compile_options(${TR_NAME}-gtk
     PRIVATE
-        ${GTK${GTK_VERSION}_CFLAGS_OTHER}
         $<$<BOOL:${ENABLE_WERROR}>:$<IF:$<CXX_COMPILER_ID:MSVC>,/WX,-Werror>>
         $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-exit-time-destructors>)
 
 target_include_directories(${TR_NAME}-gtk
     PRIVATE
-        ${CMAKE_SOURCE_DIR}
         ${CMAKE_CURRENT_BINARY_DIR})
 
 target_include_directories(${TR_NAME}-gtk SYSTEM
     PRIVATE
-        ${LIBFMT_INCLUDE_DIRS}
-        ${GTK${GTK_VERSION}_INCLUDE_DIRS}
-        ${CURL_INCLUDE_DIRS}
-        ${EVENT2_INCLUDE_DIRS}
         $<$<BOOL:${WITH_APPINDICATOR}>:${APPINDICATOR_INCLUDE_DIRS}>)
 
 target_link_libraries(${TR_NAME}-gtk
     PRIVATE
         ${TR_NAME}
-        ${GTK${GTK_VERSION}_LIBRARIES}
-        ${CURL_LIBRARIES}
-        ${EVENT2_LIBRARIES}
+        transmission::gtk_impl
+        fmt::fmt-header-only
         $<$<BOOL:${WITH_APPINDICATOR}>:${APPINDICATOR_LIBRARIES}>)
 
 if(MSVC)
diff --git a/libtransmission/CMakeLists.txt b/libtransmission/CMakeLists.txt
index 0952965a4..f60a0e662 100644
--- a/libtransmission/CMakeLists.txt
+++ b/libtransmission/CMakeLists.txt
@@ -207,18 +207,6 @@ tr_allow_compile_if(
         file-posix.cc
         subprocess-posix.cc)
 
-foreach(UT
-        ${EVENT2_UPSTREAM_TARGET}
-        ${NATPMP_UPSTREAM_TARGET}
-        ${MINIUPNPC_UPSTREAM_TARGET}
-        ${DHT_UPSTREAM_TARGET}
-        ${DEFLATE_UPSTREAM_TARGET}
-        ${UTP_UPSTREAM_TARGET}
-        ${PSL_UPSTREAM_TARGET}
-        ${B64_UPSTREAM_TARGET})
-    add_dependencies(${TR_NAME} ${UT})
-endforeach()
-
 target_compile_definitions(${TR_NAME}
     PRIVATE
         __TRANSMISSION__
@@ -231,10 +219,7 @@ target_compile_definitions(${TR_NAME}
         $<$<VERSION_LESS:${MINIUPNPC_VERSION},1.7>:MINIUPNPC_API_VERSION=${MINIUPNPC_API_VERSION}> # API version macro was only added in 1.7
         $<$<BOOL:${USE_SYSTEM_B64}>:USE_SYSTEM_B64>
         $<$<BOOL:${HAVE_SO_REUSEPORT}>:HAVE_SO_REUSEPORT=1>
-        $<$<BOOL:${ICONV_FOUND}>:HAVE_ICONV>
-        $<$<BOOL:${ICONV_SECOND_ARGUMENT_IS_CONST}>:ICONV_SECOND_ARGUMENT_IS_CONST>
-        ${NATPMP_DEFINITIONS}
-        ${MINIUPNPC_DEFINITIONS}
+        $<$<BOOL:${Iconv_FOUND}>:HAVE_ICONV>
     PUBLIC
         $<$<NOT:$<BOOL:${ENABLE_NLS}>>:DISABLE_GETTEXT>)
 
@@ -274,52 +259,38 @@ tr_target_compile_definitions_for_functions(${TR_NAME}
 
 target_include_directories(${TR_NAME}
     PRIVATE
-        ${CMAKE_CURRENT_SOURCE_DIR}
         ${CMAKE_CURRENT_BINARY_DIR}
     INTERFACE
-        ${CMAKE_BINARY_DIR})
-
-target_include_directories(${TR_NAME} SYSTEM
-    PRIVATE
-        ${WIDE_INTEGER_INCLUDE_DIRS}
-        ${UTFCPP_INCLUDE_DIRS}
-        ${DEFLATE_INCLUDE_DIRS}
-        ${FAST_FLOAT_INCLUDE_DIRS}
-        ${CRYPTO_INCLUDE_DIRS}
-        ${CURL_INCLUDE_DIRS}
-        ${PSL_INCLUDE_DIRS}
-        ${NATPMP_INCLUDE_DIRS}
-        ${MINIUPNPC_INCLUDE_DIRS}
-        ${DHT_INCLUDE_DIRS}
-        ${UTP_INCLUDE_DIRS}
-        ${B64_INCLUDE_DIRS}
-        $<$<BOOL:${ICONV_FOUND}>:${ICONV_INCLUDE_DIRS}>
-    PUBLIC
-        ${EVENT2_INCLUDE_DIRS}
-        ${LIBFMT_INCLUDE_DIRS})
+        ${CMAKE_CURRENT_SOURCE_DIR}/..
+        ${CMAKE_CURRENT_BINARY_DIR}/..)
 
 target_link_libraries(${TR_NAME}
     PRIVATE
-        ${CMAKE_THREAD_LIBS_INIT}
-        ${DEFLATE_LIBRARIES}
-        ${CRYPTO_LIBRARIES}
-        ${CURL_LIBRARIES}
-        ${EVENT2_LIBRARIES}
-        ${PSL_LIBRARIES}
-        ${NATPMP_LIBRARIES}
-        ${MINIUPNPC_LIBRARIES}
-        ${DHT_LIBRARIES}
-        ${UTP_LIBRARIES}
-        ${B64_LIBRARIES}
+        Threads::Threads
+        deflate::deflate
+        transmission::crypto_impl
+        CURL::libcurl
+        FastFloat::fast_float
+        psl::psl
+        natpmp::natpmp
+        miniupnpc::libminiupnpc
+        dht::dht
+        libutp::libutp
+        libb64::libb64
         ${LIBINTL_LIBRARY}
         ${LIBM_LIBRARY}
         ${TR_NETWORK_LIBRARIES}
         jsonsl
+        utf8::cpp
         wildmat
-        $<$<BOOL:${ICONV_FOUND}>:${ICONV_LIBRARIES}>
+        WideInteger::WideInteger
+        $<$<BOOL:${ICONV_FOUND}>:Iconv::Iconv>
         $<$<BOOL:${WIN32}>:crypt32>
         $<$<BOOL:${WIN32}>:shlwapi>
-        "$<$<BOOL:${APPLE}>:-framework Foundation>")
+        "$<$<BOOL:${APPLE}>:-framework Foundation>"
+    PUBLIC
+        fmt::fmt-header-only
+        libevent::event)
 
 if(INSTALL_LIB)
     install(
diff --git a/libtransmission/utils.cc b/libtransmission/utils.cc
index 2a5ea6f3c..880750576 100644
--- a/libtransmission/utils.cc
+++ b/libtransmission/utils.cc
@@ -307,6 +307,28 @@ namespace
 namespace tr_strvUtf8Clean_impl
 {
 
+class SecondIconvArg
+{
+public:
+    explicit SecondIconvArg(char const* arg)
+        : arg_(arg)
+    {
+    }
+
+    operator char**() &&
+    {
+        return const_cast<char**>(&arg_);
+    }
+
+    operator char const**() &&
+    {
+        return &arg_;
+    }
+
+private:
+    char const* arg_;
+};
+
 bool validateUtf8(std::string_view sv, char const** good_end)
 {
     auto const* begin = std::data(sv);
@@ -359,15 +381,10 @@ std::string to_utf8(std::string_view sv)
             continue;
         }
 
-#ifdef ICONV_SECOND_ARGUMENT_IS_CONST
-        auto const* inbuf = std::data(sv);
-#else
-        auto* inbuf = const_cast<char*>(std::data(sv));
-#endif
         size_t inbytesleft = std::size(sv);
         char* out = std::data(buf);
         size_t outbytesleft = std::size(buf);
-        auto const rv = iconv(cd, &inbuf, &inbytesleft, &out, &outbytesleft);
+        auto const rv = iconv(cd, SecondIconvArg(std::data(sv)), &inbytesleft, &out, &outbytesleft);
         iconv_close(cd);
         if (rv != size_t(-1))
         {
diff --git a/macosx/CMakeLists.txt b/macosx/CMakeLists.txt
index 34f823217..b15caaec8 100644
--- a/macosx/CMakeLists.txt
+++ b/macosx/CMakeLists.txt
@@ -383,14 +383,6 @@ tr_target_xib_files(${TR_NAME}-mac
     ${XIB_FILES}
     ${BASE_XIB_FILES})
 
-target_include_directories(${TR_NAME}-mac
-    PRIVATE
-        ${CMAKE_SOURCE_DIR})
-
-target_include_directories(${TR_NAME}-mac SYSTEM
-    PRIVATE
-        ${LIBFMT_INCLUDE_DIRS})
-
 find_library(SPARKLE_FRAMEWORK Sparkle
     PATHS ${CMAKE_CURRENT_SOURCE_DIR}
     NO_DEFAULT_PATHS)
@@ -398,6 +390,7 @@ find_library(SPARKLE_FRAMEWORK Sparkle
 target_link_libraries(${TR_NAME}-mac
     PRIVATE
         ${TR_NAME}
+        fmt::fmt-header-only
         vdkqueue
         ${SPARKLE_FRAMEWORK}
         "-framework AppKit"
diff --git a/macosx/QuickLookPlugin/CMakeLists.txt b/macosx/QuickLookPlugin/CMakeLists.txt
index 5b795d165..541d9e8f4 100644
--- a/macosx/QuickLookPlugin/CMakeLists.txt
+++ b/macosx/QuickLookPlugin/CMakeLists.txt
@@ -75,7 +75,6 @@ set_target_properties(
 
 target_include_directories(${TR_NAME}-mac-ql
     PRIVATE
-        ${CMAKE_SOURCE_DIR}
         ..)
 
 target_link_libraries(${TR_NAME}-mac-ql
diff --git a/qt/CMakeLists.txt b/qt/CMakeLists.txt
index d5e87cb4c..2aa42a601 100644
--- a/qt/CMakeLists.txt
+++ b/qt/CMakeLists.txt
@@ -202,20 +202,12 @@ endif()
 
 target_include_directories(${TR_NAME}-qt
     PRIVATE
-        ${CMAKE_SOURCE_DIR}
         ${CMAKE_CURRENT_SOURCE_DIR})
 
-target_include_directories(${TR_NAME}-qt SYSTEM
-    PRIVATE
-        ${CURL_INCLUDE_DIRS}
-        ${EVENT2_INCLUDE_DIRS})
-
 target_link_libraries(${TR_NAME}-qt
     PRIVATE
         ${TR_NAME}
-        ${QT_TARGETS}
-        ${CURL_LIBRARIES}
-        ${EVENT2_LIBRARIES})
+        transmission::qt_impl)
 
 target_compile_definitions(${TR_NAME}-qt
     PRIVATE
diff --git a/qt/Formatter.h b/qt/Formatter.h
index 320e1757d..1d3c1dd24 100644
--- a/qt/Formatter.h
+++ b/qt/Formatter.h
@@ -11,7 +11,7 @@
 #include <QCoreApplication> // Q_DECLARE_TR_FUNCTIONS
 #include <QString>
 
-#include "libtransmission/utils.h"
+#include <libtransmission/utils.h>
 
 #include "Speed.h"
 
diff --git a/tests/libtransmission/CMakeLists.txt b/tests/libtransmission/CMakeLists.txt
index 7465da42e..ccc9d1185 100644
--- a/tests/libtransmission/CMakeLists.txt
+++ b/tests/libtransmission/CMakeLists.txt
@@ -63,27 +63,17 @@ target_compile_definitions(libtransmission-test
         -DLIBTRANSMISSION_TEST_ASSETS_DIR="${CMAKE_CURRENT_SOURCE_DIR}/assets"
         __TRANSMISSION__)
 
-target_include_directories(libtransmission-test
-    PRIVATE
-        ${CMAKE_SOURCE_DIR}/libtransmission
-        ${CMAKE_BINARY_DIR}/libtransmission)
-
-target_include_directories(libtransmission-test SYSTEM
-    PRIVATE
-        ${LIBFMT_INCLUDE_DIRS}
-        ${WIDE_INTEGER_INCLUDE_DIRS}
-        ${B64_INCLUDE_DIRS}
-        ${CURL_INCLUDE_DIRS}
-        ${DHT_INCLUDE_DIRS}
-        ${EVENT2_INCLUDE_DIRS})
-
 target_compile_options(libtransmission-test
     PRIVATE $<$<OR:$<CXX_COMPILER_ID:GNU>,$<CXX_COMPILER_ID:Clang>>:-Wno-sign-compare>) # patches welcomed
 
 target_link_libraries(libtransmission-test
     PRIVATE
         ${TR_NAME}
-        gtestall)
+        gtestall
+        dht::dht
+        fmt::fmt-header-only
+        libevent::event
+        WideInteger::WideInteger)
 
 add_test(
     NAME libtransmission-test
diff --git a/tests/libtransmission/announce-list-test.cc b/tests/libtransmission/announce-list-test.cc
index b9bbba022..db6b8cf8d 100644
--- a/tests/libtransmission/announce-list-test.cc
+++ b/tests/libtransmission/announce-list-test.cc
@@ -9,13 +9,13 @@
 #include <string_view>
 #include <vector>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "announce-list.h"
-#include "error.h"
-#include "torrent-metainfo.h"
-#include "tr-strbuf.h"
-#include "variant.h"
+#include <libtransmission/announce-list.h>
+#include <libtransmission/error.h>
+#include <libtransmission/torrent-metainfo.h>
+#include <libtransmission/tr-strbuf.h>
+#include <libtransmission/variant.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/announcer-test.cc b/tests/libtransmission/announcer-test.cc
index 6799f8334..59fedbf89 100644
--- a/tests/libtransmission/announcer-test.cc
+++ b/tests/libtransmission/announcer-test.cc
@@ -9,10 +9,10 @@
 
 #define LIBTRANSMISSION_ANNOUNCER_MODULE
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "announcer-common.h"
-#include "net.h"
+#include <libtransmission/announcer-common.h>
+#include <libtransmission/net.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/announcer-udp-test.cc b/tests/libtransmission/announcer-udp-test.cc
index db3f8a3d2..3d032eae1 100644
--- a/tests/libtransmission/announcer-udp-test.cc
+++ b/tests/libtransmission/announcer-udp-test.cc
@@ -12,14 +12,14 @@
 
 #define LIBTRANSMISSION_ANNOUNCER_MODULE
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "announcer.h"
-#include "announcer-common.h"
-#include "crypto-utils.h" // for tr_rand_obj()
-#include "peer-mgr.h" // for tr_pex
-#include "timer-ev.h"
-#include "tr-buffer.h"
+#include <libtransmission/announcer.h>
+#include <libtransmission/announcer-common.h>
+#include <libtransmission/crypto-utils.h> // for tr_rand_obj()
+#include <libtransmission/peer-mgr.h> // for tr_pex
+#include <libtransmission/timer-ev.h>
+#include <libtransmission/tr-buffer.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/benc-test.cc b/tests/libtransmission/benc-test.cc
index 10eab6b72..7a736557e 100644
--- a/tests/libtransmission/benc-test.cc
+++ b/tests/libtransmission/benc-test.cc
@@ -5,9 +5,9 @@
 
 #include <fmt/format.h>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "benc.h"
+#include <libtransmission/benc.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/bitfield-test.cc b/tests/libtransmission/bitfield-test.cc
index 60b0d8866..b7547ffff 100644
--- a/tests/libtransmission/bitfield-test.cc
+++ b/tests/libtransmission/bitfield-test.cc
@@ -8,9 +8,9 @@
 #include <limits>
 #include <vector>
 
-#include "transmission.h"
-#include "crypto-utils.h"
-#include "bitfield.h"
+#include <libtransmission/transmission.h>
+#include <libtransmission/crypto-utils.h>
+#include <libtransmission/bitfield.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/block-info-test.cc b/tests/libtransmission/block-info-test.cc
index a74159c27..384354b46 100644
--- a/tests/libtransmission/block-info-test.cc
+++ b/tests/libtransmission/block-info-test.cc
@@ -5,9 +5,9 @@
 
 #include <cstdint>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "block-info.h"
+#include <libtransmission/block-info.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/blocklist-test.cc b/tests/libtransmission/blocklist-test.cc
index 9d38e11c1..05082bf25 100644
--- a/tests/libtransmission/blocklist-test.cc
+++ b/tests/libtransmission/blocklist-test.cc
@@ -6,14 +6,14 @@
 #include <cstring> // strlen()
 // #include <unistd.h> // sync()
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "blocklist.h"
-#include "file.h"
-#include "net.h"
-#include "peer-socket.h"
-#include "session.h" // tr_session.tr_session.addressIsBlocked()
-#include "tr-strbuf.h"
+#include <libtransmission/blocklist.h>
+#include <libtransmission/file.h>
+#include <libtransmission/net.h>
+#include <libtransmission/peer-socket.h>
+#include <libtransmission/session.h> // tr_session.tr_session.addressIsBlocked()
+#include <libtransmission/tr-strbuf.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/buffer-test.cc b/tests/libtransmission/buffer-test.cc
index 0b13d6143..1d7022cfb 100644
--- a/tests/libtransmission/buffer-test.cc
+++ b/tests/libtransmission/buffer-test.cc
@@ -3,9 +3,9 @@
 // or any future license endorsed by Mnemosyne LLC.
 // License text can be found in the licenses/ folder.
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "tr-buffer.h"
+#include <libtransmission/tr-buffer.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/clients-test.cc b/tests/libtransmission/clients-test.cc
index 4c2ba4b5e..34f2cc27d 100644
--- a/tests/libtransmission/clients-test.cc
+++ b/tests/libtransmission/clients-test.cc
@@ -7,10 +7,10 @@
 #include <array>
 #include <string_view>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "crypto-utils.h" // tr_rand_obj()
-#include "clients.h"
+#include <libtransmission/crypto-utils.h> // tr_rand_obj()
+#include <libtransmission/clients.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/completion-test.cc b/tests/libtransmission/completion-test.cc
index 0d6c30ff5..691c74880 100644
--- a/tests/libtransmission/completion-test.cc
+++ b/tests/libtransmission/completion-test.cc
@@ -8,11 +8,11 @@
 #include <cstdint>
 #include <set>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "block-info.h"
-#include "crypto-utils.h" // for tr_rand_obj()
-#include "completion.h"
+#include <libtransmission/block-info.h>
+#include <libtransmission/crypto-utils.h> // for tr_rand_obj()
+#include <libtransmission/completion.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/copy-test.cc b/tests/libtransmission/copy-test.cc
index 76a7c8b9e..316ea5928 100644
--- a/tests/libtransmission/copy-test.cc
+++ b/tests/libtransmission/copy-test.cc
@@ -7,9 +7,9 @@
 #include <cstring>
 #include <vector>
 
-#include "transmission.h"
-#include "error.h"
-#include "file.h"
+#include <libtransmission/transmission.h>
+#include <libtransmission/error.h>
+#include <libtransmission/file.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/crypto-test-ref.h b/tests/libtransmission/crypto-test-ref.h
index 7be0d3465..cbbe00cea 100644
--- a/tests/libtransmission/crypto-test-ref.h
+++ b/tests/libtransmission/crypto-test-ref.h
@@ -41,9 +41,9 @@
 #undef TR_ENCRYPTION_H
 #undef TR_CRYPTO_UTILS_H
 
-#include "crypto-utils.h"
-#include "crypto-utils.cc"
-#include "crypto-utils-openssl.cc"
+#include <libtransmission/crypto-utils.h>
+#include <libtransmission/crypto-utils.cc>
+#include <libtransmission/crypto-utils-openssl.cc>
 
 #undef tr_base64_decode
 #undef tr_base64_decode_impl
diff --git a/tests/libtransmission/crypto-test.cc b/tests/libtransmission/crypto-test.cc
index 355e8642f..febf0e1bb 100644
--- a/tests/libtransmission/crypto-test.cc
+++ b/tests/libtransmission/crypto-test.cc
@@ -13,11 +13,11 @@
 #include <string_view>
 #include <unordered_set>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "peer-mse.h"
-#include "crypto-utils.h"
-#include "utils.h"
+#include <libtransmission/peer-mse.h>
+#include <libtransmission/crypto-utils.h>
+#include <libtransmission/utils.h>
 
 #include "crypto-test-ref.h"
 
diff --git a/tests/libtransmission/dht-test.cc b/tests/libtransmission/dht-test.cc
index b6b215c30..45a7be8e1 100644
--- a/tests/libtransmission/dht-test.cc
+++ b/tests/libtransmission/dht-test.cc
@@ -11,11 +11,11 @@
 
 #include <event2/event.h>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "file.h"
-#include "timer-ev.h"
-#include "session-thread.h" // for tr_evthread_init();
+#include <libtransmission/file.h>
+#include <libtransmission/timer-ev.h>
+#include <libtransmission/session-thread.h> // for tr_evthread_init();
 
 #include "gtest/gtest.h"
 #include "test-fixtures.h"
diff --git a/tests/libtransmission/error-test.cc b/tests/libtransmission/error-test.cc
index d55a5d143..8ec6a76ee 100644
--- a/tests/libtransmission/error-test.cc
+++ b/tests/libtransmission/error-test.cc
@@ -3,8 +3,8 @@
 // or any future license endorsed by Mnemosyne LLC.
 // License text can be found in the licenses/ folder.
 
-#include "transmission.h"
-#include "error.h"
+#include <libtransmission/transmission.h>
+#include <libtransmission/error.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/file-piece-map-test.cc b/tests/libtransmission/file-piece-map-test.cc
index 7f8a81046..66e6c6751 100644
--- a/tests/libtransmission/file-piece-map-test.cc
+++ b/tests/libtransmission/file-piece-map-test.cc
@@ -7,10 +7,10 @@
 #include <numeric>
 #include <cstdint>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "block-info.h"
-#include "file-piece-map.h"
+#include <libtransmission/block-info.h>
+#include <libtransmission/file-piece-map.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/file-test.cc b/tests/libtransmission/file-test.cc
index 7002d0068..220b11d12 100644
--- a/tests/libtransmission/file-test.cc
+++ b/tests/libtransmission/file-test.cc
@@ -18,12 +18,12 @@
 #include <windows.h>
 #endif
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "error.h"
-#include "file.h"
-#include "tr-macros.h"
-#include "tr-strbuf.h"
+#include <libtransmission/error.h>
+#include <libtransmission/file.h>
+#include <libtransmission/tr-macros.h>
+#include <libtransmission/tr-strbuf.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/getopt-test.cc b/tests/libtransmission/getopt-test.cc
index 7f025603f..52a9ebcba 100644
--- a/tests/libtransmission/getopt-test.cc
+++ b/tests/libtransmission/getopt-test.cc
@@ -3,8 +3,8 @@
 // or any future license endorsed by Mnemosyne LLC.
 // License text can be found in the licenses/ folder.
 
-#include "transmission.h"
-#include "tr-getopt.h"
+#include <libtransmission/transmission.h>
+#include <libtransmission/tr-getopt.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/handshake-test.cc b/tests/libtransmission/handshake-test.cc
index d06c0f2e6..a96b48760 100644
--- a/tests/libtransmission/handshake-test.cc
+++ b/tests/libtransmission/handshake-test.cc
@@ -10,12 +10,12 @@
 
 #include <event2/util.h>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "handshake.h"
-#include "peer-io.h"
-#include "session.h" // tr_peerIdInit()
-#include "timer.h"
+#include <libtransmission/handshake.h>
+#include <libtransmission/peer-io.h>
+#include <libtransmission/session.h> // tr_peerIdInit()
+#include <libtransmission/timer.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/history-test.cc b/tests/libtransmission/history-test.cc
index 9a2303284..4990e7376 100644
--- a/tests/libtransmission/history-test.cc
+++ b/tests/libtransmission/history-test.cc
@@ -3,8 +3,8 @@
 // or any future license endorsed by Mnemosyne LLC.
 // License text can be found in the licenses/ folder.
 
-#include "transmission.h"
-#include "history.h"
+#include <libtransmission/transmission.h>
+#include <libtransmission/history.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/json-test.cc b/tests/libtransmission/json-test.cc
index 38ae2562a..7623adf68 100644
--- a/tests/libtransmission/json-test.cc
+++ b/tests/libtransmission/json-test.cc
@@ -9,9 +9,9 @@
 #include <string>
 #include <string_view>
 
-#include "transmission.h"
-#include "variant.h"
-#include "variant-common.h"
+#include <libtransmission/transmission.h>
+#include <libtransmission/variant.h>
+#include <libtransmission/variant-common.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/lpd-test.cc b/tests/libtransmission/lpd-test.cc
index 0ef1e41fa..1c2cca844 100644
--- a/tests/libtransmission/lpd-test.cc
+++ b/tests/libtransmission/lpd-test.cc
@@ -9,11 +9,11 @@
 #include <string_view>
 #include <vector>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "crypto-utils.h" // tr_rand_obj()
-#include "session.h"
-#include "tr-lpd.h"
+#include <libtransmission/crypto-utils.h> // tr_rand_obj()
+#include <libtransmission/session.h>
+#include <libtransmission/tr-lpd.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/magnet-metainfo-test.cc b/tests/libtransmission/magnet-metainfo-test.cc
index 35409525a..ac8bec91c 100644
--- a/tests/libtransmission/magnet-metainfo-test.cc
+++ b/tests/libtransmission/magnet-metainfo-test.cc
@@ -8,10 +8,10 @@
 
 #include "gtest/gtest.h"
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "magnet-metainfo.h"
-#include "crypto-utils.h" // tr_rand_buffer()
+#include <libtransmission/magnet-metainfo.h>
+#include <libtransmission/crypto-utils.h> // tr_rand_buffer()
 
 using namespace std::literals;
 
diff --git a/tests/libtransmission/makemeta-test.cc b/tests/libtransmission/makemeta-test.cc
index e2242fff4..f62befa82 100644
--- a/tests/libtransmission/makemeta-test.cc
+++ b/tests/libtransmission/makemeta-test.cc
@@ -14,13 +14,13 @@
 
 #include <fmt/format.h>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "crypto-utils.h"
-#include "file.h"
-#include "makemeta.h"
-#include "session.h" // TR_NAME
-#include "torrent-metainfo.h"
+#include <libtransmission/crypto-utils.h>
+#include <libtransmission/file.h>
+#include <libtransmission/makemeta.h>
+#include <libtransmission/session.h> // TR_NAME
+#include <libtransmission/torrent-metainfo.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/move-test.cc b/tests/libtransmission/move-test.cc
index b2e7439df..cc5dc05ce 100644
--- a/tests/libtransmission/move-test.cc
+++ b/tests/libtransmission/move-test.cc
@@ -11,12 +11,12 @@
 
 #include <event2/buffer.h>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "cache.h" // tr_cacheWriteBlock()
-#include "file.h" // tr_sys_path_*()
-#include "tr-strbuf.h"
-#include "variant.h"
+#include <libtransmission/cache.h> // tr_cacheWriteBlock()
+#include <libtransmission/file.h> // tr_sys_path_*()
+#include <libtransmission/tr-strbuf.h>
+#include <libtransmission/variant.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/net-test.cc b/tests/libtransmission/net-test.cc
index d9b1c465e..f696f0210 100644
--- a/tests/libtransmission/net-test.cc
+++ b/tests/libtransmission/net-test.cc
@@ -7,10 +7,10 @@
 #include <string_view>
 #include <utility>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "net.h"
-#include "peer-mgr.h"
+#include <libtransmission/net.h>
+#include <libtransmission/peer-mgr.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/open-files-test.cc b/tests/libtransmission/open-files-test.cc
index 1a0ebe4bc..ca7473469 100644
--- a/tests/libtransmission/open-files-test.cc
+++ b/tests/libtransmission/open-files-test.cc
@@ -6,11 +6,11 @@
 #include <algorithm>
 #include <string_view>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "error.h"
-#include "file.h"
-#include "tr-strbuf.h"
+#include <libtransmission/error.h>
+#include <libtransmission/file.h>
+#include <libtransmission/tr-strbuf.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/peer-mgr-active-requests-test.cc b/tests/libtransmission/peer-mgr-active-requests-test.cc
index 220482839..1ded8bd47 100644
--- a/tests/libtransmission/peer-mgr-active-requests-test.cc
+++ b/tests/libtransmission/peer-mgr-active-requests-test.cc
@@ -8,9 +8,9 @@
 #include <algorithm>
 #include <type_traits>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "peer-mgr-active-requests.h"
+#include <libtransmission/peer-mgr-active-requests.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/peer-mgr-wishlist-test.cc b/tests/libtransmission/peer-mgr-wishlist-test.cc
index a12755d2a..3d0244424 100644
--- a/tests/libtransmission/peer-mgr-wishlist-test.cc
+++ b/tests/libtransmission/peer-mgr-wishlist-test.cc
@@ -9,9 +9,9 @@
 
 #define LIBTRANSMISSION_PEER_MODULE
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "peer-mgr-wishlist.h"
+#include <libtransmission/peer-mgr-wishlist.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/peer-msgs-test.cc b/tests/libtransmission/peer-msgs-test.cc
index 8b8c1d759..86f0b8869 100644
--- a/tests/libtransmission/peer-msgs-test.cc
+++ b/tests/libtransmission/peer-msgs-test.cc
@@ -5,8 +5,8 @@
 
 #include <cstring>
 
-#include "transmission.h"
-#include "peer-msgs.h"
+#include <libtransmission/transmission.h>
+#include <libtransmission/peer-msgs.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/platform-test.cc b/tests/libtransmission/platform-test.cc
index 0d7f240b4..63d86a406 100644
--- a/tests/libtransmission/platform-test.cc
+++ b/tests/libtransmission/platform-test.cc
@@ -6,11 +6,11 @@
 #include <cstdlib>
 #include <string_view>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "file.h"
-#include "platform.h"
-#include "tr-strbuf.h"
+#include <libtransmission/file.h>
+#include <libtransmission/platform.h>
+#include <libtransmission/tr-strbuf.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/quark-test.cc b/tests/libtransmission/quark-test.cc
index 56a0f3e47..4b3f69bdc 100644
--- a/tests/libtransmission/quark-test.cc
+++ b/tests/libtransmission/quark-test.cc
@@ -3,8 +3,8 @@
 // or any future license endorsed by Mnemosyne LLC.
 // License text can be found in the licenses/ folder.
 
-#include "transmission.h"
-#include "quark.h"
+#include <libtransmission/transmission.h>
+#include <libtransmission/quark.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/remove-test.cc b/tests/libtransmission/remove-test.cc
index d9e41500e..101d62aec 100644
--- a/tests/libtransmission/remove-test.cc
+++ b/tests/libtransmission/remove-test.cc
@@ -9,11 +9,11 @@
 #include <string_view>
 #include <utility>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "file.h"
-#include "torrent-files.h"
-#include "tr-strbuf.h"
+#include <libtransmission/file.h>
+#include <libtransmission/torrent-files.h>
+#include <libtransmission/tr-strbuf.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/rename-test.cc b/tests/libtransmission/rename-test.cc
index 99f90b0f4..65c1f047c 100644
--- a/tests/libtransmission/rename-test.cc
+++ b/tests/libtransmission/rename-test.cc
@@ -3,14 +3,14 @@
 // or any future license endorsed by Mnemosyne LLC.
 // License text can be found in the licenses/ folder.
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "file.h"
-#include "resume.h"
-#include "torrent.h" // tr_isTorrent()
-#include "tr-assert.h"
-#include "tr-strbuf.h"
-#include "variant.h"
+#include <libtransmission/file.h>
+#include <libtransmission/resume.h>
+#include <libtransmission/torrent.h> // tr_isTorrent()
+#include <libtransmission/tr-assert.h>
+#include <libtransmission/tr-strbuf.h>
+#include <libtransmission/variant.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/rpc-test.cc b/tests/libtransmission/rpc-test.cc
index 313369c0e..c0fa7e1fd 100644
--- a/tests/libtransmission/rpc-test.cc
+++ b/tests/libtransmission/rpc-test.cc
@@ -3,9 +3,9 @@
 // or any future license endorsed by Mnemosyne LLC.
 // License text can be found in the licenses/ folder.
 
-#include "transmission.h"
-#include "rpcimpl.h"
-#include "variant.h"
+#include <libtransmission/transmission.h>
+#include <libtransmission/rpcimpl.h>
+#include <libtransmission/variant.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/session-alt-speeds-test.cc b/tests/libtransmission/session-alt-speeds-test.cc
index a572840e1..35e48afd9 100644
--- a/tests/libtransmission/session-alt-speeds-test.cc
+++ b/tests/libtransmission/session-alt-speeds-test.cc
@@ -8,10 +8,10 @@
 
 #include <fmt/chrono.h>
 
-#include "transmission.h"
-#include "session.h"
-#include "session-id.h"
-#include "version.h"
+#include <libtransmission/transmission.h>
+#include <libtransmission/session.h>
+#include <libtransmission/session-id.h>
+#include <libtransmission/version.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/session-test.cc b/tests/libtransmission/session-test.cc
index 2dcd05197..2242a5925 100644
--- a/tests/libtransmission/session-test.cc
+++ b/tests/libtransmission/session-test.cc
@@ -3,12 +3,12 @@
 // or any future license endorsed by Mnemosyne LLC.
 // License text can be found in the licenses/ folder.
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "session-alt-speeds.h"
-#include "session-id.h"
-#include "session.h"
-#include "version.h"
+#include <libtransmission/session-alt-speeds.h>
+#include <libtransmission/session-id.h>
+#include <libtransmission/session.h>
+#include <libtransmission/version.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/settings-test.cc b/tests/libtransmission/settings-test.cc
index ade4f1c5f..3707a2d20 100644
--- a/tests/libtransmission/settings-test.cc
+++ b/tests/libtransmission/settings-test.cc
@@ -3,9 +3,9 @@
 // or any future license endorsed by Mnemosyne LLC.
 // License text can be found in the licenses/ folder.
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "session-settings.h"
+#include <libtransmission/session-settings.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/strbuf-test.cc b/tests/libtransmission/strbuf-test.cc
index ecead8a20..064728c59 100644
--- a/tests/libtransmission/strbuf-test.cc
+++ b/tests/libtransmission/strbuf-test.cc
@@ -6,9 +6,9 @@
 #include <cstring>
 #include <string_view>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "tr-strbuf.h"
+#include <libtransmission/tr-strbuf.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/subprocess-test.cc b/tests/libtransmission/subprocess-test.cc
index eb7b5b557..2bb2413de 100644
--- a/tests/libtransmission/subprocess-test.cc
+++ b/tests/libtransmission/subprocess-test.cc
@@ -3,11 +3,11 @@
 // or any future license endorsed by Mnemosyne LLC.
 // License text can be found in the licenses/ folder.
 
-#include "transmission.h"
-#include "error.h"
-#include "file.h"
-#include "platform.h"
-#include "subprocess.h"
+#include <libtransmission/transmission.h>
+#include <libtransmission/error.h>
+#include <libtransmission/file.h>
+#include <libtransmission/platform.h>
+#include <libtransmission/subprocess.h>
 
 #include "gtest/internal/gtest-port.h" // GetArgvs()
 
diff --git a/tests/libtransmission/test-fixtures.h b/tests/libtransmission/test-fixtures.h
index b6224aa34..4c8755f4b 100644
--- a/tests/libtransmission/test-fixtures.h
+++ b/tests/libtransmission/test-fixtures.h
@@ -18,14 +18,14 @@
 
 #include <event2/event.h>
 
-#include "crypto-utils.h" // tr_base64_decode()
-#include "error.h"
-#include "file.h" // tr_sys_file_*()
-#include "platform.h" // TR_PATH_DELIMITER
-#include "quark.h"
-#include "torrent.h"
-#include "utils.h"
-#include "variant.h"
+#include <libtransmission/crypto-utils.h> // tr_base64_decode()
+#include <libtransmission/error.h>
+#include <libtransmission/file.h> // tr_sys_file_*()
+#include <libtransmission/platform.h> // TR_PATH_DELIMITER
+#include <libtransmission/quark.h>
+#include <libtransmission/torrent.h>
+#include <libtransmission/utils.h>
+#include <libtransmission/variant.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/timer-test.cc b/tests/libtransmission/timer-test.cc
index 9ae2d2ede..a88a619bf 100644
--- a/tests/libtransmission/timer-test.cc
+++ b/tests/libtransmission/timer-test.cc
@@ -3,10 +3,10 @@
 // or any future license endorsed by Mnemosyne LLC.
 // License text can be found in the licenses/ folder.
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "timer-ev.h"
-#include "utils-ev.h"
+#include <libtransmission/timer-ev.h>
+#include <libtransmission/utils-ev.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/torrent-files-test.cc b/tests/libtransmission/torrent-files-test.cc
index 447c89a1f..f3d17d447 100644
--- a/tests/libtransmission/torrent-files-test.cc
+++ b/tests/libtransmission/torrent-files-test.cc
@@ -7,9 +7,9 @@
 #include <string_view>
 #include <utility>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "torrent-files.h"
+#include <libtransmission/torrent-files.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/torrent-magnet-test.cc b/tests/libtransmission/torrent-magnet-test.cc
index 479d1b060..d812ad4f6 100644
--- a/tests/libtransmission/torrent-magnet-test.cc
+++ b/tests/libtransmission/torrent-magnet-test.cc
@@ -5,13 +5,13 @@
 
 #include <string>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "crypto-utils.h"
-#include "error.h"
-#include "torrent-magnet.h"
-#include "torrent-metainfo.h"
-#include "torrent.h"
+#include <libtransmission/crypto-utils.h>
+#include <libtransmission/error.h>
+#include <libtransmission/torrent-magnet.h>
+#include <libtransmission/torrent-metainfo.h>
+#include <libtransmission/torrent.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/torrent-metainfo-test.cc b/tests/libtransmission/torrent-metainfo-test.cc
index 9b89480da..48c1a9137 100644
--- a/tests/libtransmission/torrent-metainfo-test.cc
+++ b/tests/libtransmission/torrent-metainfo-test.cc
@@ -6,14 +6,14 @@
 #include <array>
 #include <string_view>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "crypto-utils.h"
-#include "error.h"
-#include "torrent-metainfo.h"
-#include "torrent.h"
-#include "tr-strbuf.h"
-#include "utils.h"
+#include <libtransmission/crypto-utils.h>
+#include <libtransmission/error.h>
+#include <libtransmission/torrent-metainfo.h>
+#include <libtransmission/torrent.h>
+#include <libtransmission/tr-strbuf.h>
+#include <libtransmission/utils.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/torrents-test.cc b/tests/libtransmission/torrents-test.cc
index 36b944f2a..483157df2 100644
--- a/tests/libtransmission/torrents-test.cc
+++ b/tests/libtransmission/torrents-test.cc
@@ -7,10 +7,10 @@
 #include <string_view>
 #include <vector>
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "torrent.h"
-#include "torrents.h"
+#include <libtransmission/torrent.h>
+#include <libtransmission/torrents.h>
 
 #include "gtest/gtest.h"
 
diff --git a/tests/libtransmission/utils-test.cc b/tests/libtransmission/utils-test.cc
index 64a5d09f2..ca6e0f6ae 100644
--- a/tests/libtransmission/utils-test.cc
+++ b/tests/libtransmission/utils-test.cc
@@ -20,12 +20,12 @@
 #define unsetenv(key) SetEnvironmentVariableA(key, nullptr)
 #endif
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "crypto-utils.h" // tr_rand_int()
-#include "platform.h"
-#include "tr-strbuf.h"
-#include "utils.h"
+#include <libtransmission/crypto-utils.h> // tr_rand_int()
+#include <libtransmission/platform.h>
+#include <libtransmission/tr-strbuf.h>
+#include <libtransmission/utils.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/variant-test.cc b/tests/libtransmission/variant-test.cc
index 1dc0be2ca..2a30c8637 100644
--- a/tests/libtransmission/variant-test.cc
+++ b/tests/libtransmission/variant-test.cc
@@ -5,13 +5,13 @@
 
 #define LIBTRANSMISSION_VARIANT_MODULE
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "benc.h"
-#include "crypto-utils.h" // tr_rand_buffer(), tr_rand_int()
-#include "error.h"
-#include "variant-common.h"
-#include "variant.h"
+#include <libtransmission/benc.h>
+#include <libtransmission/crypto-utils.h> // tr_rand_buffer(), tr_rand_int()
+#include <libtransmission/error.h>
+#include <libtransmission/variant-common.h>
+#include <libtransmission/variant.h>
 
 #include <algorithm>
 #include <array>
diff --git a/tests/libtransmission/watchdir-test.cc b/tests/libtransmission/watchdir-test.cc
index 57423f7aa..c8b818db6 100644
--- a/tests/libtransmission/watchdir-test.cc
+++ b/tests/libtransmission/watchdir-test.cc
@@ -10,13 +10,13 @@
 
 #define LIBTRANSMISSION_WATCHDIR_MODULE
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "file.h"
-#include "net.h"
-#include "watchdir.h"
-#include "watchdir-base.h"
-#include "timer-ev.h"
+#include <libtransmission/file.h>
+#include <libtransmission/net.h>
+#include <libtransmission/watchdir.h>
+#include <libtransmission/watchdir-base.h>
+#include <libtransmission/timer-ev.h>
 
 #include "test-fixtures.h"
 
diff --git a/tests/libtransmission/web-utils-test.cc b/tests/libtransmission/web-utils-test.cc
index 2819f473b..8c3100529 100644
--- a/tests/libtransmission/web-utils-test.cc
+++ b/tests/libtransmission/web-utils-test.cc
@@ -11,11 +11,11 @@
 #define unsetenv(key) SetEnvironmentVariableA(key, nullptr)
 #endif
 
-#include "transmission.h"
+#include <libtransmission/transmission.h>
 
-#include "crypto-utils.h"
-#include "platform.h"
-#include "web-utils.h"
+#include <libtransmission/crypto-utils.h>
+#include <libtransmission/platform.h>
+#include <libtransmission/web-utils.h>
 
 #include "test-fixtures.h"
 
diff --git a/utils/CMakeLists.txt b/utils/CMakeLists.txt
index 614f4cefd..35abbe55c 100644
--- a/utils/CMakeLists.txt
+++ b/utils/CMakeLists.txt
@@ -5,20 +5,12 @@ foreach(P create edit remote show)
         PRIVATE
             ${P}.cc)
 
-    target_include_directories(${TR_NAME}-${P}
-        PRIVATE
-            ${CMAKE_SOURCE_DIR})
-
-    target_include_directories(${TR_NAME}-${P} SYSTEM
-        PRIVATE
-            ${LIBFMT_INCLUDE_DIRS}
-            ${EVENT2_INCLUDE_DIRS}
-            ${CURL_INCLUDE_DIRS})
-
     target_link_libraries(${TR_NAME}-${P}
         PRIVATE
             ${TR_NAME}
-            ${CURL_LIBRARIES})
+            CURL::libcurl
+            fmt::fmt-header-only
+            libevent::event)
 
     tr_win32_app_info(${TR_NAME}-${P}
         "Transmission Utility ('${P}')"