diff --git a/cmake/libprotoc.cmake b/cmake/libprotoc.cmake
index 107c1c5..233bcf6 100644
--- a/cmake/libprotoc.cmake
+++ b/cmake/libprotoc.cmake
@@ -73,7 +73,7 @@ set(libprotoc_files
   ${protobuf_source_dir}/src/google/protobuf/compiler/javanano/javanano_message_field.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/javanano/javanano_primitive_field.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/js/js_generator.cc
-  ${protobuf_source_dir}/src/google/protobuf/compiler/js/well_known_types_embed.cc
+  ${CMAKE_CURRENT_BINARY_DIR}/well_known_types_embed.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/objectivec/objectivec_enum.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/objectivec/objectivec_enum_field.cc
   ${protobuf_source_dir}/src/google/protobuf/compiler/objectivec/objectivec_extension.cc
@@ -210,9 +210,9 @@ set(js_well_known_types_sources
 )
 add_executable(js_embed ${protobuf_source_dir}/src/google/protobuf/compiler/js/embed.cc)
 add_custom_command(
-  OUTPUT ${protobuf_source_dir}/src/google/protobuf/compiler/js/well_known_types_embed.cc
+  OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/well_known_types_embed.cc
   DEPENDS js_embed ${js_well_known_types_sources}
-  COMMAND js_embed ${js_well_known_types_sources} > ${protobuf_source_dir}/src/google/protobuf/compiler/js/well_known_types_embed.cc
+  COMMAND "$<TARGET_FILE:js_embed>" ${js_well_known_types_sources} > ${CMAKE_CURRENT_BINARY_DIR}/well_known_types_embed.cc
 )
 
 add_library(libprotoc ${protobuf_SHARED_OR_STATIC}