--- ../FindDOXYGEN.cmake.orig	2019-05-22 15:34:43.639814214 +0200
+++ ./cmake/modules/FindDOXYGEN.cmake	2019-05-22 15:55:29.567993099 +0200
@@ -13,15 +13,6 @@
     /sbin
 )
 
-# We set various paths in doxygen.cfg via configure_file(). These are
-# native system paths which aren't compatible with Cygwin's Doxygen.
-string(TOLOWER ${DOXYGEN_EXECUTABLE} _de_lower)
-if(${_de_lower} MATCHES "cyg")
-	set(_ignore_reason "Cygwin Doxygen found at ${DOXYGEN_EXECUTABLE}. Ignoring.")
-	message(STATUS ${_ignore_reason})
-	set(DOXYGEN_EXECUTABLE DOXYGEN_EXECUTABLE-NOTFOUND CACHE FILEPATH ${_ignore_reason} FORCE)
-endif()
-
 include( FindPackageHandleStandardArgs )
 find_package_handle_standard_args( DOXYGEN DEFAULT_MSG DOXYGEN_EXECUTABLE )