diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2100c53ad2..70d663a89c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,7 +20,34 @@ if(DEFINED ENV{DEPS_BUILD_DIR})
   set(DEPS_PREFIX "$ENV{DEPS_BUILD_DIR}/usr" CACHE PATH "Path prefix for finding dependencies")
 else()
   set(DEPS_PREFIX "${CMAKE_CURRENT_SOURCE_DIR}/.deps/usr" CACHE PATH "Path prefix for finding dependencies")
+  # When running from within CLion or Visual Studio,
+  # build bundled dependencies automatically.
+  if(NOT EXISTS ${DEPS_PREFIX}
+     AND (DEFINED ENV{CLION_IDE}
+          OR DEFINED ENV{VisualStudioEdition}))
+    message(STATUS "Building dependencies...")
+    set(DEPS_BUILD_DIR ${PROJECT_BINARY_DIR}/.deps)
+    file(MAKE_DIRECTORY ${DEPS_BUILD_DIR})
+    execute_process(
+      COMMAND ${CMAKE_COMMAND} -G ${CMAKE_GENERATOR}
+        -DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE}
+        -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
+        -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
+        -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
+        -DCMAKE_C_FLAGS_DEBUG=${CMAKE_C_FLAGS_DEBUG}
+        -DCMAKE_C_FLAGS_MINSIZEREL=${CMAKE_C_FLAGS_MINSIZEREL}
+        -DCMAKE_C_FLAGS_RELWITHDEBINFO=${CMAKE_C_FLAGS_RELWITHDEBINFO}
+        -DCMAKE_C_FLAGS_RELEASE=${CMAKE_C_FLAGS_RELEASE}
+        -DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM}
+        ${PROJECT_SOURCE_DIR}/third-party
+      WORKING_DIRECTORY ${DEPS_BUILD_DIR})
+    execute_process(
+      COMMAND ${CMAKE_COMMAND} --build ${DEPS_BUILD_DIR}
+        --config ${CMAKE_BUILD_TYPE})
+    set(DEPS_PREFIX ${DEPS_BUILD_DIR}/usr)
+  endif()
 endif()
+
 if(CMAKE_CROSSCOMPILING AND NOT UNIX)
   list(INSERT CMAKE_FIND_ROOT_PATH 0 ${DEPS_PREFIX})
   list(INSERT CMAKE_PREFIX_PATH 0 ${DEPS_PREFIX}/../host/bin)