diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
index a183836..e9deef5 100644
--- a/cmake/CMakeLists.txt
+++ b/cmake/CMakeLists.txt
@@ -113,12 +115,19 @@ configure_file("${_ROOT}/mkdio.h.in"

 include_directories("${_ROOT}")

-add_executable(mktags
-    "${_ROOT}/mktags.c")

-add_custom_command(OUTPUT "${_ROOT}/blocktags"
-    COMMAND mktags > blocktags
-    WORKING_DIRECTORY "${_ROOT}")
+if(NOT GENERATE_BLOCKTAGS)
+    message(STATUS "Not generating blocktags")
+else()
+    message(STATUS "Using mktags to generate blocktags")
+
+    add_executable(mktags
+        "${_ROOT}/mktags.c")
+
+    add_custom_command(OUTPUT "${_ROOT}/blocktags"
+        COMMAND mktags > blocktags
+        WORKING_DIRECTORY "${_ROOT}")
+endif()

 add_library(libmarkdown
     "${_ROOT}/mkdio.c"