chore(deps): move boost to CPM and bump to 1.92 (#5730)

.github/workflows/ci-macos.yml

@@ -84,6 +84,7 @@ jobs:
         timeout-minutes: 5
         run: |
           brew install --force \
+            boost \
             cmake \
             doxygen \
             graphviz \
@@ -124,6 +125,11 @@ jobs:
         env:
           APPLE_CODESIGN_IDENTITY: ${{ secrets.APPLE_CODESIGN_IDENTITY }}
         run: |
+          icu4c_root="$(brew --prefix icu4c@78 2>/dev/null)"
+          export CPPFLAGS="${CPPFLAGS:+${CPPFLAGS} }-I${icu4c_root}/include"
+          export LDFLAGS="${LDFLAGS:+${LDFLAGS} }-L${icu4c_root}/lib"
+          export LIBRARY_PATH="${icu4c_root}/lib${LIBRARY_PATH:+:${LIBRARY_PATH}}"
+
           mkdir -p build
           cmake \
             -B build \
@@ -131,7 +137,7 @@ jobs:
             -DBUILD_DOCS="${{ matrix.build_docs }}" \
             -DBUILD_WERROR=ON \
             -DCMAKE_BUILD_TYPE=Release \
-            -DICU_ROOT="$(brew --prefix icu4c@78 2>/dev/null)" \
+            -DICU_ROOT="${icu4c_root}" \
             -DOPENSSL_ROOT_DIR="$(brew --prefix openssl@3 2>/dev/null)" \
             -DOpus_ROOT_DIR="$(brew --prefix opus 2>/dev/null)" \
             -DQt6_DIR="$(brew --prefix qtbase 2>/dev/null)/lib/cmake/Qt6" \

cmake/compile_definitions/macos.cmake

@@ -21,7 +21,7 @@ foreach(dir ${MACOS_LINK_DIRECTORIES})
     endif()
 endforeach()
 
-if(NOT BOOST_USE_STATIC AND NOT FETCH_CONTENT_BOOST_USED)
+if(NOT BOOST_USE_STATIC AND NOT CPM_BOOST_USED)
     ADD_DEFINITIONS(-DBOOST_LOG_DYN_LINK)
 endif()
 

cmake/dependencies/Boost_Sunshine.cmake

@@ -1,16 +1,14 @@
 #
-# Loads the boost library giving the priority to the system package first, with a fallback to FetchContent.
+# Loads the boost library giving priority to a compatible system package, with a fallback to CPM.
 #
 include_guard(GLOBAL)
 
-set(BOOST_VERSION "1.89.0")
+set(BOOST_MINIMUM_VERSION "1.89.0")
 set(BOOST_COMPONENTS
         filesystem
         log
         program_options
-        system
 )
-# system is not used by Sunshine, but by Simple-Web-Server, added here for convenience
 
 if(NOT WIN32)
     list(APPEND BOOST_COMPONENTS locale)
@@ -30,20 +28,9 @@ if(BOOST_USE_STATIC)
     set(Boost_USE_STATIC_LIBS ON)  # cmake-lint: disable=C0103
 endif()
 
-if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.30")
+find_package(Boost ${BOOST_MINIMUM_VERSION} CONFIG COMPONENTS ${BOOST_COMPONENTS})
-    cmake_policy(SET CMP0167 NEW)  # Get BoostConfig.cmake from upstream
-endif()
-find_package(Boost CONFIG ${BOOST_VERSION} EXACT COMPONENTS ${BOOST_COMPONENTS})
 if(NOT Boost_FOUND)
-    message(STATUS "Boost v${BOOST_VERSION} package not found in the system. Falling back to FetchContent.")
+    message(STATUS "Boost v${BOOST_MINIMUM_VERSION}+ package not found in the system. Falling back to CPM.")
-    include(FetchContent)
-
-    if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.24.0")
-        cmake_policy(SET CMP0135 NEW)  # Avoid warning about DOWNLOAD_EXTRACT_TIMESTAMP in CMake 3.24
-    endif()
-    if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.31.0")
-        cmake_policy(SET CMP0174 NEW)  # Handle empty variables
-    endif()
 
     # more components required for compiling boost targets
     list(APPEND BOOST_COMPONENTS
@@ -53,41 +40,21 @@ if(NOT Boost_FOUND)
             process
             property_tree)
 
-    set(BOOST_ENABLE_CMAKE ON)
+    set(BOOST_ENABLE_CMAKE ON)  # Use the Boost superproject to resolve library dependencies recursively
+    set(BOOST_INCLUDE_LIBRARIES ${BOOST_COMPONENTS})  # Limit Boost to the required libraries
+    set(BOOST_SKIP_INSTALL_RULES ON)  # Do not install Boost libraries or headers
 
-    # Limit boost to the required libraries only
+    CPMGetPackage(Boost)
-    set(BOOST_INCLUDE_LIBRARIES ${BOOST_COMPONENTS})
+    set(CPM_BOOST_USED TRUE)
-    set(BOOST_URL "https://github.com/boostorg/boost/releases/download/boost-${BOOST_VERSION}/boost-${BOOST_VERSION}-cmake.tar.xz")  # cmake-lint: disable=C0301
-    set(BOOST_HASH "SHA256=67acec02d0d118b5de9eb441f5fb707b3a1cdd884be00ca24b9a73c995511f74")
 
-    if(CMAKE_VERSION VERSION_LESS "3.24.0")
+    if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.25.0")
-        FetchContent_Declare(
+        add_subdirectory(${Boost_SOURCE_DIR} ${Boost_BINARY_DIR} SYSTEM)
-                Boost
+    else()
-                URL ${BOOST_URL}
+        add_subdirectory(${Boost_SOURCE_DIR} ${Boost_BINARY_DIR})
-                URL_HASH ${BOOST_HASH}
-        )
-    elseif(APPLE AND CMAKE_VERSION VERSION_GREATER_EQUAL "3.25.0")
-        # add SYSTEM to FetchContent_Declare, this fails on debian bookworm
-        FetchContent_Declare(
-                Boost
-                URL ${BOOST_URL}
-                URL_HASH ${BOOST_HASH}
-                SYSTEM  # requires CMake 3.25+
-                OVERRIDE_FIND_PACKAGE  # requires CMake 3.24+, but we have a macro to handle it for other versions
-        )
-    elseif(CMAKE_VERSION VERSION_GREATER_EQUAL "3.24.0")
-        FetchContent_Declare(
-                Boost
-                URL ${BOOST_URL}
-                URL_HASH ${BOOST_HASH}
-                OVERRIDE_FIND_PACKAGE  # requires CMake 3.24+, but we have a macro to handle it for other versions
-        )
     endif()
 
-    FetchContent_MakeAvailable(Boost)
-    set(FETCH_CONTENT_BOOST_USED TRUE)
-
     set(Boost_FOUND TRUE)  # cmake-lint: disable=C0103
+    set(Boost_VERSION "${BOOST_VERSION}")  # cmake-lint: disable=C0103
     set(Boost_INCLUDE_DIRS  # cmake-lint: disable=C0103
             "$<BUILD_INTERFACE:${Boost_SOURCE_DIR}/libs/headers/include>")
 

cmake/macros/common.cmake

@@ -18,10 +18,16 @@ endif()
 macro(find_package)  # cmake-lint: disable=C0103
     string(TOLOWER "${ARGV0}" ARGV0_LOWER)
     if(
-        (("${ARGV0_LOWER}" STREQUAL "boost") AND DEFINED FETCH_CONTENT_BOOST_USED) OR
+        (("${ARGV0_LOWER}" STREQUAL "boost") AND DEFINED CPM_BOOST_USED) OR
         (("${ARGV0_LOWER}" STREQUAL "libevdev") AND DEFINED EXTERNAL_PROJECT_LIBEVDEV_USED)
     )
         # Do nothing, as the package has already been fetched
+    elseif(("${ARGV0_LOWER}" STREQUAL "boost") AND POLICY CMP0167)
+        # Prefer upstream BoostConfig.cmake for compatible system packages on CMake 3.30+.
+        cmake_policy(PUSH)
+        cmake_policy(SET CMP0167 NEW)
+        _find_package(${ARGV})
+        cmake_policy(POP)
     else()
         # Call the original find_package function
         _find_package(${ARGV})

cmake/prep/options.cmake

@@ -26,11 +26,7 @@ endif()
 option(SUNSHINE_SYSTEM_VULKAN_HEADERS "Use system installation of vulkan-headers rather than the submodule." OFF)
 option(SUNSHINE_SYSTEM_WAYLAND_PROTOCOLS "Use system installation of wayland-protocols rather than the submodule." OFF)
 
-if(APPLE)
+option(BOOST_USE_STATIC "Use static boost libraries." ON)
-    option(BOOST_USE_STATIC "Use static boost libraries." OFF)
-else()
-    option(BOOST_USE_STATIC "Use static boost libraries." ON)
-endif()
 
 option(CUDA_FAIL_ON_MISSING "Fail the build if CUDA is not found." ON)
 option(CUDA_INHERIT_COMPILE_OPTIONS

docs/building.md

@@ -14,6 +14,14 @@ It is recommended to use one of the following compilers:
 
 ### Dependencies
 
+Boost `1.89.0` or newer can be supplied as a system package. When a compatible system package is unavailable, CMake
+downloads the project-locked Boost release through CPM. Static Boost libraries are preferred on every platform by
+default; pass `-DBOOST_USE_STATIC=OFF` to use shared system libraries instead.
+
+Sunshine's build and packaging automation uses packaged static Boost libraries on Arch Linux, Fedora 44 or newer,
+Ubuntu 26.04 or newer, macOS with Homebrew, Windows with MSYS2, and FreeBSD. Older supported distributions continue
+to use the CPM fallback because their repositories do not meet the minimum Boost version.
+
 #### FreeBSD
 > [!CAUTION]
 > Sunshine support for FreeBSD is experimental and may be incomplete or not work as expected

package-lock.cmake

@@ -32,3 +32,17 @@
 # - `CPMDeclarePackage(...)`
 
 set(PATCH_DIRECTORY "${CMAKE_CURRENT_LIST_DIR}/patches")
+
+# Boost
+# renovate: datasource=github-release-attachments depName=boostorg/boost
+# versioning=regex:^boost-(?<major>\d+)\.(?<minor>\d+)\.(?<patch>\d+)(?<prerelease>\.[A-Za-z0-9.-]+)?$
+set(BOOST_TAG boost-1.92.0)
+set(BOOST_SHA256 9bed76128d4e46755dbe818487788c6fceb6f72b378f4daa49b7e1e600d9088d)
+string(REGEX REPLACE "^boost-" "" BOOST_VERSION "${BOOST_TAG}")
+CPMDeclarePackage(Boost
+        NAME Boost
+        VERSION ${BOOST_VERSION}
+        URL https://github.com/boostorg/boost/releases/download/${BOOST_TAG}/${BOOST_TAG}-cmake.tar.xz
+        URL_HASH SHA256=${BOOST_SHA256}
+        DOWNLOAD_ONLY YES
+)

packaging/linux/Arch/PKGBUILD

@@ -61,6 +61,8 @@ depends=(
 makedepends=(
   'appstream'
   'appstream-glib'
+  'boost'
+  'boost-libs'
   'cmake'
   'desktop-file-utils'
   "gcc${_gcc_dep_suffix}"

packaging/linux/copr/Sunshine.spec

@@ -50,11 +50,12 @@ BuildRequires: which
 %if 0%{?fedora}
 # Fedora-specific BuildRequires
 BuildRequires: appstream
-# BuildRequires: boost-devel >= 1.86.0
 BuildRequires: glslc
 BuildRequires: libappstream-glib
 BuildRequires: vulkan-loader-devel
 %if 0%{fedora} > 43
+BuildRequires: boost-devel >= 1.89.0
+BuildRequires: boost-static >= 1.89.0
 # needed for npm from nvm
 BuildRequires: libatomic
 BuildRequires: xz

packaging/linux/flatpak/modules/boost.json

@@ -9,8 +9,8 @@
   "sources": [
     {
       "type": "archive",
-      "url": "https://github.com/boostorg/boost/releases/download/boost-1.89.0/boost-1.89.0-cmake.tar.xz",
+      "url": "https://github.com/boostorg/boost/releases/download/boost-1.92.0/boost-1.92.0-cmake.tar.xz",
-      "sha256": "67acec02d0d118b5de9eb441f5fb707b3a1cdd884be00ca24b9a73c995511f74"
+      "sha256": "9bed76128d4e46755dbe818487788c6fceb6f72b378f4daa49b7e1e600d9088d"
     }
   ]
 }

packaging/sunshine.rb

@@ -451,6 +451,26 @@ class Sunshine < Formula
       %w[docs src src_assets test_assets].each do |directory|
         test_runtime.install "build/tests/#{directory}"
       end
+      boost_test_fixtures = %w[
+        cmake/compile_definitions/macos.cmake
+        cmake/dependencies/Boost_Sunshine.cmake
+        cmake/macros/common.cmake
+        cmake/prep/options.cmake
+        package-lock.cmake
+        packaging/linux/Arch/PKGBUILD
+        packaging/linux/copr/Sunshine.spec
+        packaging/linux/flatpak/modules/boost.json
+        scripts/linux_build.sh
+      ]
+      if OS.mac?
+        boost_test_fixtures += %w[
+          .github/workflows/ci-macos.yml
+          scripts/macos_build.sh
+        ]
+      end
+      boost_test_fixtures.each do |fixture|
+        (test_runtime/Pathname.new(fixture).dirname).install "build/tests/#{fixture}"
+      end
       test_runtime.install "sunshine.png"
       (test_runtime/"tests/unit").install "tests/unit/test_video.cpp"
 
@@ -527,6 +547,8 @@ class Sunshine < Formula
         assert_path_exists coverage_buildpath
         assert_path_exists bin/TEST_BINARY
         assert_path_exists test_runtime/"docs/getting_started.md"
+        assert_path_exists test_runtime/"cmake/dependencies/Boost_Sunshine.cmake"
+        assert_path_exists test_runtime/"scripts/macos_build.sh" if OS.mac?
         assert_path_exists test_runtime/"src/config.cpp"
         assert_path_exists test_runtime/"src_assets/common/assets/web/public/assets/locale/en.json"
         assert_path_exists test_runtime/"test_assets/web/images/logo-sunshine.svg"

scripts/linux_build.sh

@@ -280,6 +280,8 @@ function add_arch_deps() {
     'appstream-glib'
     'avahi'
     'base-devel'
+    'boost'
+    'boost-libs'
     'cmake'
     'curl'
     'doxygen'
@@ -419,6 +421,17 @@ function add_ubuntu_deps() {
   add_test_ppa
   add_debian_based_deps
 
+  # Ubuntu 26.04+ provides compatible Boost static libraries in the component development packages.
+  if [[ "$(printf '%s\n' "$version" "26.04" | sort -V | head -n1)" == "26.04" ]]; then
+    dependencies+=(
+      "libboost-filesystem-dev"
+      "libboost-locale-dev"
+      "libboost-log-dev"
+      "libboost-program-options-dev"
+      "libicu-dev"
+    )
+  fi
+
   if [[ "$skip_cuda" == 0 ]] && [[ "$cuda_system_package" == 1 ]]; then
     if [[ -z "$cuda_system_package_name" ]]; then
       echo "CUDA system package was requested, but no package name was configured."
@@ -484,6 +497,14 @@ function add_fedora_deps() {
     "xorg-x11-server-Xvfb"  # necessary for headless unit testing
   )
 
+  # Fedora 44+ provides Boost 1.90 or newer and packages its static libraries separately.
+  if [[ "$version" =~ ^[0-9]+$ ]] && (( version >= 44 )); then
+    dependencies+=(
+      "boost-devel"
+      "boost-static"
+    )
+  fi
+
   if [[ "$skip_libva" == 0 ]]; then
     dependencies+=(
       "libva-devel"  # VA-API

scripts/macos_build.sh

@@ -25,8 +25,8 @@ export BUILD_VERSION
 export BRANCH
 export COMMIT
 
-# boost could be included here but cmake will build the right version we need
 required_formulas=(
+  "boost"
   "cmake"
   "doxygen"
   "graphviz"
@@ -92,6 +92,12 @@ function run_step_deps() {
 function run_step_cmake() {
   echo "Running step: CMake configure"
 
+  # Static Boost.Locale exposes ICU as transitive linker arguments, while Homebrew keeps ICU keg-only.
+  icu4c_root=$(brew --prefix icu4c@78 2>/dev/null)
+  export CPPFLAGS="${CPPFLAGS:+${CPPFLAGS} }-I${icu4c_root}/include"
+  export LDFLAGS="${LDFLAGS:+${LDFLAGS} }-L${icu4c_root}/lib"
+  export LIBRARY_PATH="${icu4c_root}/lib${LIBRARY_PATH:+:${LIBRARY_PATH}}"
+
   # prepare CMAKE args
   cmake_args=(
     "-B=build"
@@ -100,7 +106,7 @@ function run_step_cmake() {
     "-DBUILD_TESTS=${build_tests}"
     "-DBUILD_WERROR=ON"
     "-DCMAKE_BUILD_TYPE=${build_type}"
-    "-DICU_ROOT=$(brew --prefix icu4c@78 2>/dev/null)"
+    "-DICU_ROOT=${icu4c_root}"
     "-DOPENSSL_ROOT_DIR=$(brew --prefix openssl@3 2>/dev/null)"
     "-DOpus_ROOT_DIR=$(brew --prefix opus 2>/dev/null)"
     "-DQt6_DIR=$(brew --prefix qtbase 2>/dev/null)/lib/cmake/Qt6"

src/boost_process_compat.h

@@ -0,0 +1,17 @@
+/**
+ * @file src/boost_process_compat.h
+ * @brief Includes Boost.Process while isolating third-party deprecation diagnostics.
+ */
+#pragma once
+
+#if defined(__APPLE__) && defined(__clang__)
+  #pragma clang diagnostic push
+  #pragma clang diagnostic ignored "-Wdeprecated-declarations"
+
+  // Boost.Process v1 still uses std::codecvt_utf8 on macOS, including in Boost 1.92.
+  #include <boost/process/v1/locale.hpp>
+
+  #pragma clang diagnostic pop
+#endif
+
+#include <boost/process/v1.hpp>

src/platform/common.h

@@ -16,10 +16,12 @@
 #include <boost/core/noncopyable.hpp>
 #ifndef _WIN32
   #include <boost/asio.hpp>
-  #include <boost/process/v1.hpp>
 #endif
 
 // local includes
+#ifndef _WIN32
+  #include "src/boost_process_compat.h"
+#endif
 #include "src/config.h"
 #include "src/logging.h"
 #include "src/thread_safe.h"

src/platform/linux/misc.cpp

@@ -45,7 +45,6 @@
 // lib includes
 #include <boost/asio/ip/address.hpp>
 #include <boost/asio/ip/host_name.hpp>
-#include <boost/process/v1.hpp>
 #include <fcntl.h>
 #include <lizardbyte/common/env.h>
 #include <unistd.h>
@@ -59,6 +58,7 @@
 // local includes
 #include "graphics.h"
 #include "misc.h"
+#include "src/boost_process_compat.h"
 #include "src/config.h"
 #include "src/entry_handler.h"
 #include "src/logging.h"

src/platform/macos/misc.mm

@@ -28,10 +28,10 @@
 // lib includes
 #include <boost/asio/ip/address.hpp>
 #include <boost/asio/ip/host_name.hpp>
-#include <boost/process/v1.hpp>
 
 // local includes
 #include "misc.h"
+#include "src/boost_process_compat.h"
 #include "src/entry_handler.h"
 #include "src/logging.h"
 #include "src/platform/common.h"

src/platform/windows/display_base.cpp

@@ -9,16 +9,18 @@
 // platform includes
 #include <initguid.h>
 
+// local includes required before library includes
+// Boost.Process must be included before MinHook pulls in Windows.h so Boost.Asio sees WinSock2.h first.
+#include "src/boost_process_compat.h"
+
 // lib includes
 #include <boost/algorithm/string/join.hpp>
-#include <boost/process/v1.hpp>
 #include <MinHook.h>
 
 // local includes
 #include "utf_utils.h"
 
-// We have to include boost/process/v1.hpp before display.h due to WinSock.h,
+// Including Boost.Process before Windows.h prevents the definition of NTSTATUS, so we must define it ourselves.
-// but that prevents the definition of NTSTATUS so we must define it ourself.
 /**
  * @brief Windows NT status code returned by native APIs.
  */

src/platform/windows/misc.cpp

@@ -14,9 +14,11 @@
 // lib includes
 #include <boost/algorithm/string.hpp>
 #include <boost/asio/ip/address.hpp>
-#include <boost/process/v1.hpp>
 #include <boost/program_options/parsers.hpp>
 
+// local includes required before platform includes
+#include "src/boost_process_compat.h"
+
 // prevent clang format from "optimizing" the header include order
 // clang-format off
 #include <dwmapi.h>

src/process.h

@@ -16,13 +16,11 @@
 #include <optional>
 #include <unordered_map>
 
-// lib includes
-#include <boost/process/v1.hpp>
-
 // local includes
 #include "config.h"
 #include "platform/common.h"
 #include "rtsp.h"
+#include "src/boost_process_compat.h"
 #include "utility.h"
 
 /**

src/system_tray.cpp

@@ -64,7 +64,6 @@
 
   // lib includes
   #include <boost/filesystem.hpp>
-  #include <boost/process/v1/environment.hpp>
   #include <tray.h>
   #ifdef _WIN32
     #include <libvirtualhid/license.hpp>

tests/CMakeLists.txt

@@ -188,8 +188,17 @@ add_executable(${PROJECT_NAME}
 # This ensures both CLI and CLion can access the same files relative to the test executable
 # Using configure_file ensures files are copied when they change between builds
 set(INTEGRATION_TEST_FILES
+    "cmake/compile_definitions/macos.cmake"
+    "cmake/dependencies/Boost_Sunshine.cmake"
+    "cmake/macros/common.cmake"
+    "cmake/prep/options.cmake"
+    "package-lock.cmake"
+    "packaging/linux/Arch/PKGBUILD"
+    "packaging/linux/flatpak/modules/boost.json"
+    "scripts/linux_build.sh"
     "src/config.cpp"
     "src_assets/common/assets/web/config.html"
+    "docs/building.md"
     "docs/configuration.md"
     "docs/getting_started.md"
     "docs/troubleshooting.md"
@@ -198,6 +207,18 @@ set(INTEGRATION_TEST_FILES
     "src_assets/linux/misc/60-sunshine.rules"
 )
 
+if(EXISTS "${CMAKE_SOURCE_DIR}/packaging/linux/copr/Sunshine.spec")
+    list(APPEND INTEGRATION_TEST_FILES "packaging/linux/copr/Sunshine.spec")
+    list(APPEND TEST_DEFINITIONS SUNSHINE_COPR_SPEC_FIXTURE_AVAILABLE)
+endif()
+
+if(APPLE)
+    list(APPEND INTEGRATION_TEST_FILES
+        ".github/workflows/ci-macos.yml"
+        "scripts/macos_build.sh"
+    )
+endif()
+
 foreach(file ${INTEGRATION_TEST_FILES})
     configure_file(
         "${CMAKE_SOURCE_DIR}/${file}"

tests/integration/test_boost_version_consistency.cpp

@@ -0,0 +1,141 @@
+/**
+ * @file tests/integration/test_boost_version_consistency.cpp
+ * @brief Tests for the Boost system-version and fallback-version contracts.
+ */
+
+// test includes
+#include "../tests_common.h"
+
+// standard includes
+#include <format>
+#include <regex>
+#include <string>
+#include <string_view>
+
+// local includes
+#include "src/file_handler.h"
+
+namespace {
+  /**
+   * @brief Read a project file copied into the test runtime directory.
+   *
+   * @param path Project-relative file path.
+   * @return File contents.
+   */
+  std::string read_project_file(const std::string_view path) {
+    const auto path_string = std::format("{}/{}", SUNSHINE_TEST_BIN_DIR, path);
+    auto content = file_handler::read_file(path_string.c_str());
+    EXPECT_FALSE(content.empty()) << "Unable to read " << path;
+    return content;
+  }
+
+  /**
+   * @brief Extract the first capture group from text.
+   *
+   * @param content Text to search.
+   * @param pattern Regular expression containing a capture group.
+   * @return The first captured value, or an empty string when no match exists.
+   */
+  std::string extract_value(const std::string &content, const std::regex &pattern) {
+    std::smatch match;
+    EXPECT_TRUE(std::regex_search(content, match, pattern));
+    return match.size() > 1 ? match[1].str() : std::string {};
+  }
+}  // namespace
+
+TEST(BoostVersionConsistencyTest, SystemPackageAllowsCompatibleVersions) {
+  const auto dependency = read_project_file("cmake/dependencies/Boost_Sunshine.cmake");
+  const auto documentation = read_project_file("docs/building.md");
+  const auto macos_definitions = read_project_file("cmake/compile_definitions/macos.cmake");
+  const auto common_macros = read_project_file("cmake/macros/common.cmake");
+  const auto options = read_project_file("cmake/prep/options.cmake");
+  const auto minimum_version = extract_value(
+    dependency,
+    std::regex {R"regex(set\(BOOST_MINIMUM_VERSION "([0-9]+\.[0-9]+\.[0-9]+)"\))regex"}
+  );
+
+  EXPECT_NE(
+    dependency.find("find_package(Boost ${BOOST_MINIMUM_VERSION} CONFIG COMPONENTS ${BOOST_COMPONENTS})"),
+    std::string::npos
+  );
+  EXPECT_EQ(dependency.find("EXACT"), std::string::npos);
+  EXPECT_EQ(dependency.find("FetchContent"), std::string::npos);
+  EXPECT_EQ(dependency.find("\n        system"), std::string::npos);
+  EXPECT_NE(dependency.find("CPMGetPackage(Boost)"), std::string::npos);
+  EXPECT_NE(documentation.find(std::format("Boost `{}` or newer", minimum_version)), std::string::npos);
+  EXPECT_EQ(macos_definitions.find("FETCH_CONTENT_BOOST_USED"), std::string::npos);
+  EXPECT_NE(macos_definitions.find("CPM_BOOST_USED"), std::string::npos);
+  EXPECT_EQ(common_macros.find("FETCH_CONTENT_BOOST_USED"), std::string::npos);
+  EXPECT_NE(common_macros.find("CPM_BOOST_USED"), std::string::npos);
+  EXPECT_NE(options.find("option(BOOST_USE_STATIC \"Use static boost libraries.\" ON)"), std::string::npos);
+  EXPECT_EQ(options.find("option(BOOST_USE_STATIC \"Use static boost libraries.\" OFF)"), std::string::npos);
+  EXPECT_NE(documentation.find("Static Boost libraries are preferred on every platform"), std::string::npos);
+  EXPECT_NE(documentation.find("-DBOOST_USE_STATIC=OFF"), std::string::npos);
+}
+
+TEST(BoostVersionConsistencyTest, CpmFallbackMatchesFlatpakSource) {
+  const auto package_lock = read_project_file("package-lock.cmake");
+  const auto flatpak_module = read_project_file("packaging/linux/flatpak/modules/boost.json");
+  const auto fallback_version = extract_value(
+    package_lock,
+    std::regex {R"regex(set\(BOOST_TAG boost-([0-9]+\.[0-9]+\.[0-9]+)\))regex"}
+  );
+  const auto fallback_hash = extract_value(
+    package_lock,
+    std::regex {R"regex(set\(BOOST_SHA256 ([0-9a-f]{64})\))regex"}
+  );
+
+  EXPECT_NE(
+    flatpak_module.find(std::format("boost-{0}/boost-{0}-cmake.tar.xz", fallback_version)),
+    std::string::npos
+  );
+  EXPECT_NE(flatpak_module.find(std::format("\"sha256\": \"{}\"", fallback_hash)), std::string::npos);
+}
+
+TEST(BoostVersionConsistencyTest, SupportedBuildsInstallStaticSystemPackages) {
+  const auto documentation = read_project_file("docs/building.md");
+  const auto linux_script = read_project_file("scripts/linux_build.sh");
+  const auto arch_package = read_project_file("packaging/linux/Arch/PKGBUILD");
+#ifdef SUNSHINE_COPR_SPEC_FIXTURE_AVAILABLE
+  const auto dependency = read_project_file("cmake/dependencies/Boost_Sunshine.cmake");
+  const auto copr_spec = read_project_file("packaging/linux/copr/Sunshine.spec");
+  const auto minimum_version = extract_value(
+    dependency,
+    std::regex {R"regex(set\(BOOST_MINIMUM_VERSION "([0-9]+\.[0-9]+\.[0-9]+)"\))regex"}
+  );
+#endif
+
+  EXPECT_NE(linux_script.find("'boost'"), std::string::npos);
+  EXPECT_NE(linux_script.find("'boost-libs'"), std::string::npos);
+  EXPECT_NE(linux_script.find("\"boost-devel\""), std::string::npos);
+  EXPECT_NE(linux_script.find("\"boost-static\""), std::string::npos);
+  EXPECT_NE(linux_script.find("\"libboost-filesystem-dev\""), std::string::npos);
+  EXPECT_NE(linux_script.find("\"libboost-locale-dev\""), std::string::npos);
+  EXPECT_NE(linux_script.find("\"libboost-log-dev\""), std::string::npos);
+  EXPECT_NE(linux_script.find("\"libboost-program-options-dev\""), std::string::npos);
+  EXPECT_NE(linux_script.find("\"libicu-dev\""), std::string::npos);
+  EXPECT_NE(linux_script.find("\"26.04\" | sort -V"), std::string::npos);
+  EXPECT_NE(linux_script.find("version >= 44"), std::string::npos);
+  EXPECT_NE(arch_package.find("'boost'"), std::string::npos);
+  EXPECT_NE(arch_package.find("'boost-libs'"), std::string::npos);
+#ifdef SUNSHINE_COPR_SPEC_FIXTURE_AVAILABLE
+  EXPECT_NE(copr_spec.find("%if 0%{fedora} > 43"), std::string::npos);
+  EXPECT_NE(
+    copr_spec.find(std::format("BuildRequires: boost-devel >= {}", minimum_version)),
+    std::string::npos
+  );
+  EXPECT_NE(
+    copr_spec.find(std::format("BuildRequires: boost-static >= {}", minimum_version)),
+    std::string::npos
+  );
+#endif
+#ifdef __APPLE__
+  const auto macos_script = read_project_file("scripts/macos_build.sh");
+  const auto macos_workflow = read_project_file(".github/workflows/ci-macos.yml");
+  EXPECT_NE(macos_script.find("\"boost\""), std::string::npos);
+  EXPECT_NE(macos_script.find("LIBRARY_PATH"), std::string::npos);
+  EXPECT_NE(macos_workflow.find("boost \\"), std::string::npos);
+  EXPECT_NE(macos_workflow.find("LIBRARY_PATH"), std::string::npos);
+#endif
+  EXPECT_NE(documentation.find("packaged static Boost libraries"), std::string::npos);
+}

tests/integration/test_external_commands.cpp

@@ -12,10 +12,8 @@
 #include <tuple>
 #include <vector>
 
-// lib includes
-#include <boost/process/v1.hpp>
-
 // local includes
+#include "src/boost_process_compat.h"
 #include "src/platform/common.h"
 
 // Test data structure for parameterized testing