NOISSUE clean up some old cmake messes

depends/hoedown/CMakeLists.txt

@@ -1,14 +1,14 @@
 # hoedown 3.0.2 - https://github.com/hoedown/hoedown/archive/3.0.2.tar.gz
-project(hoedown)
+project(hoedown LANGUAGES C VERSION 3.0.2)
 
 set(HOEDOWN_SOURCES
-hoedown/autolink.h
-hoedown/buffer.h
-hoedown/document.h
-hoedown/escape.h
-hoedown/html.h
-hoedown/stack.h
-hoedown/version.h
+include/hoedown/autolink.h
+include/hoedown/buffer.h
+include/hoedown/document.h
+include/hoedown/escape.h
+include/hoedown/html.h
+include/hoedown/stack.h
+include/hoedown/version.h
 src/autolink.c
 src/buffer.c
 src/document.c
@@ -20,10 +20,7 @@ src/stack.c
 src/version.c
 )
 
-# Set the include dir path.
-set(HOEDOWN_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}" PARENT_SCOPE)
-
 # Include self.
-include_directories(${CMAKE_CURRENT_SOURCE_DIR})
-
 add_library(hoedown STATIC ${HOEDOWN_SOURCES})
+
+target_include_directories(hoedown PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include)