diff --git a/libs/audio/include/psemek/audio/channel.hpp b/libs/audio/include/psemek/audio/channel.hpp
index 75081f07..c82f6e40 100644
--- a/libs/audio/include/psemek/audio/channel.hpp
+++ b/libs/audio/include/psemek/audio/channel.hpp
@@ -1,8 +1,14 @@
 #pragma once
 
-#include <psemek/audio/stream.hpp>
+#include <version>
+
+#include <psemek/audio/stream.hpp>
+#ifdef __cpp_lib_atomic_shared_ptr
+	#include <atomic>
+#else
+	#include <psemek/util/mutexed.hpp>
+#endif
 
-#include <atomic>
 #include <memory>
 
 namespace psemek::audio
@@ -37,7 +43,11 @@ namespace psemek::audio
 		}
 
 	private:
-		std::atomic<stream_ptr> stream_;
+		#ifdef __cpp_lib_atomic_shared_ptr
+			std::atomic<stream_ptr> stream_;
+		#else
+			util::mutexed<stream_ptr> stream_;
+		#endif
 	};
 
 	using channel_ptr = std::shared_ptr<channel>;
diff --git a/libs/gfx/include/psemek/gfx/detail/stb_image_write.h b/libs/gfx/include/psemek/gfx/detail/stb_image_write.h
index e4b32ed1..151eacaa 100644
--- a/libs/gfx/include/psemek/gfx/detail/stb_image_write.h
+++ b/libs/gfx/include/psemek/gfx/detail/stb_image_write.h
@@ -773,7 +773,7 @@ static int stbi_write_hdr_core(stbi__write_context *s, int x, int y, int comp, f
 #ifdef __STDC_LIB_EXT1__
       len = sprintf_s(buffer, sizeof(buffer), "EXPOSURE=          1.0000000000000\n\n-Y %d +X %d\n", y, x);
 #else
-      len = sprintf(buffer, "EXPOSURE=          1.0000000000000\n\n-Y %d +X %d\n", y, x);
+      len = snprintf(buffer, sizeof(buffer), "EXPOSURE=          1.0000000000000\n\n-Y %d +X %d\n", y, x);
 #endif
       s->func(s->context, buffer, len);
 
diff --git a/libs/journal/source/event.cpp b/libs/journal/source/event.cpp
index 4ebc68c6..62d43b17 100644
--- a/libs/journal/source/event.cpp
+++ b/libs/journal/source/event.cpp
@@ -8,7 +8,7 @@ namespace psemek::journal
 
 	std::string current_time()
 	{
-		const auto now = std::chrono::high_resolution_clock::now();
+		const auto now = std::chrono::system_clock::now();
 		return std::format("{:%FT%TZ}", now);
 	}
 
diff --git a/libs/log/source/log.cpp b/libs/log/source/log.cpp
index a5eab065..4f070455 100644
--- a/libs/log/source/log.cpp
+++ b/libs/log/source/log.cpp
@@ -2,7 +2,6 @@
 #include <psemek/util/to_string.hpp>
 #include <psemek/util/exception.hpp>
 #include <psemek/util/hash_table.hpp>
-#include <boost/stacktrace/stacktrace.hpp>
 
 #include <chrono>
 #include <ctime>
diff --git a/libs/math/include/psemek/math/detail/array.hpp b/libs/math/include/psemek/math/detail/array.hpp
index fd835628..2b5c15a8 100644
--- a/libs/math/include/psemek/math/detail/array.hpp
+++ b/libs/math/include/psemek/math/detail/array.hpp
@@ -3,6 +3,8 @@
 #include <psemek/math/dynamic.hpp>
 #include <psemek/util/exception.hpp>
 
+#include <memory>
+
 namespace psemek::math::detail
 {
 
@@ -43,6 +45,8 @@ namespace psemek::math::detail
 
 			T data[N];
 
+			type() = default;
+
 			type(dynamic_dimensions<N>){}
 
 			dynamic_dimensions<N> dimensions() const { return {}; }
@@ -59,6 +63,8 @@ namespace psemek::math::detail
 		{
 			static constexpr std::size_t size = 0;
 
+			type() = default;
+
 			type(dynamic_dimensions<0>){}
 
 			dynamic_dimensions<0> dimensions() const { return {}; }
diff --git a/libs/math/include/psemek/math/detail/array_2d.hpp b/libs/math/include/psemek/math/detail/array_2d.hpp
index 98f0075f..1d53c32a 100644
--- a/libs/math/include/psemek/math/detail/array_2d.hpp
+++ b/libs/math/include/psemek/math/detail/array_2d.hpp
@@ -67,7 +67,7 @@ namespace psemek::math::detail
 				: rows(dimensions.rows.size)
 			{}
 
-			dynamic_dimensions_2d<dynamic, 0> dimensions() const { return {.rows = rows}; }
+			dynamic_dimensions_2d<dynamic, 0> dimensions() const { return {.rows = {rows}}; }
 
 			T const * operator[](std::size_t) const { throw empty_array_exception{}; }
 			T * operator[](std::size_t) { throw empty_array_exception{}; }
@@ -103,7 +103,7 @@ namespace psemek::math::detail
 				: columns(dimensions.columns.size)
 			{}
 
-			dynamic_dimensions_2d<0, dynamic> dimensions() const { return {.columns = columns}; }
+			dynamic_dimensions_2d<0, dynamic> dimensions() const { return {.columns = {columns}}; }
 
 			T const * operator[](std::size_t) const { throw empty_array_exception{}; }
 			T * operator[](std::size_t) { throw empty_array_exception{}; }
@@ -141,7 +141,7 @@ namespace psemek::math::detail
 				, data(std::make_unique_for_overwrite<T[]>(rows * columns))
 			{}
 
-			dynamic_dimensions_2d<R, dynamic> dimensions() const { return {.columns = columns}; }
+			dynamic_dimensions_2d<R, dynamic> dimensions() const { return {.columns = {columns}}; }
 
 			T * operator[] (std::size_t row)
 			{
@@ -178,7 +178,7 @@ namespace psemek::math::detail
 				, data(std::make_unique_for_overwrite<T[]>(rows * columns))
 			{}
 
-			dynamic_dimensions_2d<dynamic, C> dimensions() const { return {.rows = rows}; }
+			dynamic_dimensions_2d<dynamic, C> dimensions() const { return {.rows = {rows}}; }
 
 			T * operator[] (std::size_t row)
 			{
@@ -216,7 +216,7 @@ namespace psemek::math::detail
 				, data(std::make_unique_for_overwrite<T[]>(rows * columns))
 			{}
 
-			dynamic_dimensions_2d<dynamic, dynamic> dimensions() const { return {.rows = rows, .columns = columns}; }
+			dynamic_dimensions_2d<dynamic, dynamic> dimensions() const { return {.rows = {rows}, .columns = {columns}}; }
 
 			T * operator[] (std::size_t row)
 			{
diff --git a/libs/math/include/psemek/math/point.hpp b/libs/math/include/psemek/math/point.hpp
index d1dc97c1..afbc199f 100644
--- a/libs/math/include/psemek/math/point.hpp
+++ b/libs/math/include/psemek/math/point.hpp
@@ -26,9 +26,7 @@ namespace psemek::math
 			: coords(dimensions)
 		{}
 
-		point()
-			: coords({})
-		{}
+		point() = default;
 
 		explicit point(std::size_t size) requires (N == dynamic)
 			: coords({.size = size})
@@ -37,7 +35,6 @@ namespace psemek::math
 		template <typename ... Args>
 		requires(N != dynamic && sizeof...(Args) == N && detail::all_convertible_to<T, Args...>::value)
 		point(Args && ... args)
-			: coords({})
 		{
 			auto out = values().begin();
 			((*out++ = args), ...);
diff --git a/libs/math/include/psemek/math/vector.hpp b/libs/math/include/psemek/math/vector.hpp
index 977f244a..d0319e5f 100644
--- a/libs/math/include/psemek/math/vector.hpp
+++ b/libs/math/include/psemek/math/vector.hpp
@@ -29,9 +29,7 @@ namespace psemek::math
 			: coords(dimensions)
 		{}
 
-		vector()
-			: coords({})
-		{}
+		vector() = default;
 
 		explicit vector(std::size_t size) requires (N == dynamic)
 			: coords({.size = size})
@@ -40,7 +38,6 @@ namespace psemek::math
 		template <typename ... Args>
 		requires(N != dynamic && sizeof...(Args) == N && detail::all_convertible_to<T, Args...>::value)
 		vector(Args && ... args)
-			: coords({})
 		{
 			auto out = values().begin();
 			((*out++ = args), ...);
diff --git a/libs/util/CMakeLists.txt b/libs/util/CMakeLists.txt
index 1fe769d0..5d74b0ba 100644
--- a/libs/util/CMakeLists.txt
+++ b/libs/util/CMakeLists.txt
@@ -1,4 +1,6 @@
 if(NOT (CMAKE_SYSTEM_NAME STREQUAL Emscripten))
+  # Boost.Math is header-only
+  # Required for statistics.hpp
   find_package(Boost COMPONENTS math REQUIRED CONFIG)
 endif()
 
diff --git a/libs/util/include/psemek/util/exception.hpp b/libs/util/include/psemek/util/exception.hpp
index 48ada36c..8890529c 100644
--- a/libs/util/include/psemek/util/exception.hpp
+++ b/libs/util/include/psemek/util/exception.hpp
@@ -16,8 +16,7 @@ namespace psemek::util
 #else
 	struct stacktrace
 	{
-		template <typename Stream>
-		friend Stream & operator << (Stream & stream, stacktrace)
+		friend std::ostream & operator << (std::ostream & stream, stacktrace)
 		{
 			stream << "(stacktrace disabled)\n";
 			return stream;
diff --git a/libs/util/include/psemek/util/mutexed.hpp b/libs/util/include/psemek/util/mutexed.hpp
new file mode 100644
index 00000000..da0373b2
--- /dev/null
+++ b/libs/util/include/psemek/util/mutexed.hpp
@@ -0,0 +1,53 @@
+#pragma once
+
+#include <mutex>
+#include <utility>
+
+namespace psemek::util
+{
+
+	template <typename T, typename Mutex = std::mutex>
+	struct mutexed
+	{
+		mutexed() = default;
+
+		mutexed(mutexed const &) = delete;
+		mutexed(mutexed &&) = delete;
+
+		mutexed & operator = (mutexed const &) = delete;
+		mutexed & operator = (mutexed &&) = delete;
+
+		mutexed(T && value)
+			: value_(std::move(value))
+		{}
+
+		template <typename ... Args>
+		mutexed(std::in_place_t, Args && ... args)
+			: value_(std::forward<Args>(args)...)
+		{}
+
+		T load() const
+		{
+			std::lock_guard lock{mutex_};
+			return value_;
+		}
+
+		void store(T && new_value)
+		{
+			std::lock_guard lock{mutex_};
+			value_ = std::move(new_value);
+		}
+
+		T exchange(T && new_value)
+		{
+			std::lock_guard lock{mutex_};
+			std::swap(value_, new_value);
+			return new_value;
+		}
+
+	private:
+		T value_;
+		mutable Mutex mutex_;
+	};
+
+}
diff --git a/libs/util/include/psemek/util/range.hpp b/libs/util/include/psemek/util/range.hpp
index 35d1859f..a18c00ef 100644
--- a/libs/util/include/psemek/util/range.hpp
+++ b/libs/util/include/psemek/util/range.hpp
@@ -83,8 +83,8 @@ namespace psemek::util
 	template <typename Range>
 	auto reversed(Range const & r)
 	{
-		auto it1 = begin(r);
-		auto it2 = end(r);
+		auto it1 = xbegin(r);
+		auto it2 = xend(r);
 
 		using ReverseIterator = std::reverse_iterator<decltype(it1)>;
 		return range<ReverseIterator>{std::make_reverse_iterator(it2), std::make_reverse_iterator(it1)};
diff --git a/package/CMakeLists.txt b/package/CMakeLists.txt
index d8fb0d58..862baf91 100644
--- a/package/CMakeLists.txt
+++ b/package/CMakeLists.txt
@@ -59,9 +59,13 @@ function(psemek_add_executable_impl target is_application)
 
 		target_link_libraries(${target} PUBLIC psemek)
 		if(${is_application})
-			target_link_libraries(${target} PUBLIC
-				"-Wl,--whole-archive $<TARGET_FILE:${PSEMEK_BACKEND_LIBRARY}> -Wl,--no-whole-archive"
-				${PSEMEK_BACKEND_LIBRARY})
+			if(ANDROID)
+				target_link_libraries(${target} PUBLIC
+					"-Wl,--whole-archive $<TARGET_FILE:${PSEMEK_BACKEND_LIBRARY}> -Wl,--no-whole-archive"
+					${PSEMEK_BACKEND_LIBRARY})
+			else()
+				target_link_libraries(${target} PUBLIC ${PSEMEK_BACKEND_LIBRARY})
+			endif()
 		endif()
 
 		install(TARGETS ${target})