diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0494c6a94..92815876d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,6 +26,15 @@ PROJECT(SalomeSMESH C CXX)
 # upper case
 STRING(TOUPPER ${PROJECT_NAME} PROJECT_NAME_UC)
 
+if (DEFINED EMSCRIPTEN)
+  list(APPEND CMAKE_FIND_ROOT_PATH "/")
+  message("Using Emscripten")
+  add_compile_options("--use-port=boost_headers" "-pthread")
+  add_link_options("-pthread")
+else()
+  message("Not using Emscripten")
+endif()
+
 # Common CMake macros
 # ===================
 SET(CONFIGURATION_ROOT_DIR $ENV{CONFIGURATION_ROOT_DIR} CACHE PATH "Path to the Salome CMake configuration files")