diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7c0e98e0..90b0deb3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,6 +29,7 @@ option(WEBP_BUILD_WEBPINFO "Build the webpinfo command line tool." ON)
 option(WEBP_BUILD_WEBPMUX "Build the webpmux command line tool." ON)
 option(WEBP_BUILD_EXTRAS "Build extras." ON)
 option(WEBP_BUILD_WEBP_JS "Emscripten build of webp.js." OFF)
+option(WEBP_USE_THREAD "Enable threading support" ON)
 option(WEBP_NEAR_LOSSLESS "Enable near-lossless encoding" ON)
 option(WEBP_ENABLE_SWAP_16BIT_CSP "Enable byte swap for 16 bit colorspaces."
        OFF)
@@ -50,6 +51,7 @@ if(WEBP_BUILD_WEBP_JS)
   set(WEBP_BUILD_WEBPINFO OFF)
   set(WEBP_BUILD_WEBPMUX OFF)
   set(WEBP_BUILD_EXTRAS OFF)
+  set(WEBP_USE_THREAD OFF)
 
   if(WEBP_ENABLE_SIMD)
     message("wasm2js does not support SIMD, disabling webp.js generation.")
@@ -567,7 +569,6 @@ if(WEBP_BUILD_EXTRAS)
                              PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
                                      ${CMAKE_CURRENT_SOURCE_DIR}/src
                                      ${CMAKE_CURRENT_BINARY_DIR}/src)
-  install(TARGETS get_disto RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
 
   # webp_quality
   add_executable(webp_quality ${WEBP_QUALITY_SRCS} ${WEBP_EXTRAS_SRCS})
@@ -575,7 +576,6 @@ if(WEBP_BUILD_EXTRAS)
   target_include_directories(webp_quality
                              PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
                                      ${CMAKE_CURRENT_BINARY_DIR})
-  install(TARGETS webp_quality RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
 
   # vwebp_sdl
   find_package(SDL)
@@ -590,7 +590,6 @@ if(WEBP_BUILD_EXTRAS)
                                        ${SDL_INCLUDE_DIR})
     set(WEBP_HAVE_SDL 1)
     target_compile_definitions(vwebp_sdl PUBLIC WEBP_HAVE_SDL)
-    install(TARGETS vwebp_sdl RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
   endif()
 endif()
 
diff --git a/cmake/deps.cmake b/cmake/deps.cmake
index fb55f048..fce8318d 100644
--- a/cmake/deps.cmake
+++ b/cmake/deps.cmake
@@ -22,26 +22,25 @@ check_c_source_compiles("
   " HAVE_BUILTIN_BSWAP64)
 
 # Check for libraries.
-if(NOT WEBP_BUILD_WEBP_JS)
-  # Disable pThreads for WASM.
+if(WEBP_USE_THREAD)
   find_package(Threads)
-endif()
-if(Threads_FOUND)
-  # work around cmake bug on QNX (https://cmake.org/Bug/view.php?id=11333)
-  if(CMAKE_USE_PTHREADS_INIT AND NOT CMAKE_SYSTEM_NAME STREQUAL "QNX")
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pthread")
+  if(Threads_FOUND)
+    # work around cmake bug on QNX (https://cmake.org/Bug/view.php?id=11333)
+    if(CMAKE_USE_PTHREADS_INIT AND NOT CMAKE_SYSTEM_NAME STREQUAL "QNX")
+      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pthread")
+    endif()
+    check_c_source_compiles("
+        #include <pthread.h>
+        int main (void) {
+          int attr = PTHREAD_PRIO_INHERIT;
+          return attr;
+        }
+      " FLAG_HAVE_PTHREAD_PRIO_INHERIT)
+    set(HAVE_PTHREAD_PRIO_INHERIT ${FLAG_HAVE_PTHREAD_PRIO_INHERIT})
+    list(APPEND WEBP_DEP_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
   endif()
-  check_c_source_compiles("
-      #include <pthread.h>
-      int main (void) {
-        int attr = PTHREAD_PRIO_INHERIT;
-        return attr;
-      }
-    " FLAG_HAVE_PTHREAD_PRIO_INHERIT)
-  set(HAVE_PTHREAD_PRIO_INHERIT ${FLAG_HAVE_PTHREAD_PRIO_INHERIT})
-  list(APPEND WEBP_DEP_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
+  set(WEBP_USE_THREAD ${Threads_FOUND})
 endif()
-set(WEBP_USE_THREAD ${Threads_FOUND})
 
 # TODO: this seems unused, check with autotools.
 set(LT_OBJDIR ".libs/")