diff --git a/3rdparty/CMakeLists.txt b/3rdparty/CMakeLists.txt
index cf8a7a4d..9251b82d 100644
--- a/3rdparty/CMakeLists.txt
+++ b/3rdparty/CMakeLists.txt
@@ -1,3 +1,12 @@
+if(CMAKE_SYSTEM_NAME STREQUAL Emscripten)
+  set(BOOST_INCLUDE_LIBRARIES random stacktrace math)
+  set(BOOST_ENABLE_COMPATIBILITY_TARGETS 1)
+  add_subdirectory(boost EXCLUDE_FROM_ALL)
+
+  # TODO: make this available via find_package so we wouldn't have to
+  # special-case it in every library
+endif()
+
 file(GLOB_RECURSE RAPIDJSON_SOURCES "${CMAKE_CURRENT_LIST_DIR}/rapidjson/include/*")
 add_library(rapidjson INTERFACE EXCLUDE_FROM_ALL "${RAPIDJSON_SOURCES}")
 target_include_directories(rapidjson INTERFACE "${CMAKE_CURRENT_LIST_DIR}/rapidjson/include")
diff --git a/libs/math/CMakeLists.txt b/libs/math/CMakeLists.txt
index 94cb4bcd..719f67de 100644
--- a/libs/math/CMakeLists.txt
+++ b/libs/math/CMakeLists.txt
@@ -1,6 +1,8 @@
 option(PSEMEK_ROBUST_PREDICATES "Use robust geometric predicates" OFF)
 
-find_package(Boost REQUIRED)
+if(NOT (CMAKE_SYSTEM_NAME STREQUAL Emscripten))
+	find_package(Boost REQUIRED)
+endif()
 if(PSEMEK_ROBUST_PREDICATES)
 	find_package(GMP REQUIRED)
 endif()
diff --git a/libs/pcg/CMakeLists.txt b/libs/pcg/CMakeLists.txt
index 6d062da9..3ac02fc8 100644
--- a/libs/pcg/CMakeLists.txt
+++ b/libs/pcg/CMakeLists.txt
@@ -1,4 +1,6 @@
-find_package(Boost COMPONENTS random REQUIRED)
+if(NOT (CMAKE_SYSTEM_NAME STREQUAL Emscripten))
+	find_package(Boost COMPONENTS random REQUIRED)
+endif()
 
 file(GLOB_RECURSE PSEMEK_PCG_HEADERS RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "include/*.hpp")
 file(GLOB_RECURSE PSEMEK_PCG_SOURCES RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "source/*.cpp")
diff --git a/libs/random/CMakeLists.txt b/libs/random/CMakeLists.txt
index bd004d25..1b359c45 100644
--- a/libs/random/CMakeLists.txt
+++ b/libs/random/CMakeLists.txt
@@ -1,4 +1,6 @@
-find_package(Boost COMPONENTS random REQUIRED)
+if(NOT (CMAKE_SYSTEM_NAME STREQUAL Emscripten))
+	find_package(Boost COMPONENTS random REQUIRED)
+endif()
 
 file(GLOB_RECURSE PSEMEK_RANDOM_HEADERS RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "include/*.hpp")
 file(GLOB_RECURSE PSEMEK_RANDOM_SOURCES RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "source/*.cpp")
diff --git a/libs/util/CMakeLists.txt b/libs/util/CMakeLists.txt
index 71235109..0106432d 100644
--- a/libs/util/CMakeLists.txt
+++ b/libs/util/CMakeLists.txt
@@ -1,4 +1,6 @@
-find_package(Boost REQUIRED)
+if(NOT (CMAKE_SYSTEM_NAME STREQUAL Emscripten))
+	find_package(Boost REQUIRED)
+endif()
 
 file(GLOB_RECURSE PSEMEK_UTIL_HEADERS RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "include/*.hpp")
 file(GLOB_RECURSE PSEMEK_UTIL_SOURCES RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "source/*.cpp")