diff --git a/CMakeLists.txt.in b/CMakeLists.txt.in
index 93b5f3e7b..27cc39810 100644
--- a/CMakeLists.txt.in
+++ b/CMakeLists.txt.in
@@ -240,16 +240,18 @@ PRINT_CEF_CONFIG()
# Define the API documentation target.
#
-find_package(Doxygen)
-if(DOXYGEN_FOUND)
- add_custom_target(apidocs ALL
- # Generate documentation in the docs/html directory.
- COMMAND "${DOXYGEN_EXECUTABLE}" Doxyfile
- # Write a docs/index.html file.
- COMMAND ${CMAKE_COMMAND} -E echo "" > docs/index.html
- WORKING_DIRECTORY "${CEF_ROOT}"
- COMMENT "Generating API documentation with Doxygen..."
- VERBATIM )
-else()
- message(WARNING "Doxygen must be installed to generate API documentation.")
-endif()
+if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile")
+ find_package(Doxygen)
+ if(DOXYGEN_FOUND)
+ add_custom_target(apidocs ALL
+ # Generate documentation in the docs/html directory.
+ COMMAND "${DOXYGEN_EXECUTABLE}" Doxyfile
+ # Write a docs/index.html file.
+ COMMAND ${CMAKE_COMMAND} -E echo "" > docs/index.html
+ WORKING_DIRECTORY "${CEF_ROOT}"
+ COMMENT "Generating API documentation with Doxygen..."
+ VERBATIM )
+ else()
+ message(WARNING "Doxygen must be installed to generate API documentation.")
+ endif()
+endif()
\ No newline at end of file