Don't use bundled litehtml. Use MacPorts litehtml.
diff --git CMakeLists.txt CMakeLists.txt
index bffe7ef..43f3581 100644
--- CMakeLists.txt
+++ CMakeLists.txt
@@ -16,8 +16,8 @@ set(CMAKE_CXX_FLAGS_RELEASE "-O3")
 set(CMAKE_C_FLAGS_RELEASE "-O3")
 
 set(LITEBROWSER_PATH src)
-set(LITEHTML_PATH litehtml)
-set(CONTAINER_PATH ${LITEHTML_PATH}/containers/cairo)
+set(LITEHTML_PATH ${CMAKE_INSTALL_PREFIX})
+set(CONTAINER_PATH ${LITEHTML_PATH}/include/litehtml/containers/cairo)
 
 pkg_check_modules(LB_LIBS REQUIRED gdkmm-3.0 gtkmm-3.0 libcurl cairo pango pangocairo)
 
@@ -49,7 +49,6 @@ set(HEADERS ${LITEBROWSER_PATH}/browser_wnd.h
         )
 
 option(LITEHTML_BUILD_TESTING "enable testing for litehtml" OFF)
-add_subdirectory(${LITEHTML_PATH})
 
 # additional warnings
 add_compile_options(-Wall -Wextra -Wpedantic)
diff --git src/globals.h src/globals.h
index 83a9e05..0490f35 100644
--- src/globals.h
+++ src/globals.h
@@ -19,7 +19,7 @@
 #include <gtkmm.h>
 #include <gtkmm/application.h>
 #include <gtkmm/window.h>
-#include "../litehtml/include/litehtml.h"
+#include <litehtml/litehtml.h>
 #include <cairo-ft.h>
 #include <gdk/gdk.h>
 #include <cairomm/context.h>

diff --git src/html_dumper.h src/html_dumper.h
index e5bbe45..311c6a6 100644
--- src/html_dumper.h
+++ src/html_dumper.h
@@ -1,7 +1,7 @@
 #ifndef LITEBROWSER_HTML_DUMPER_H
 #define LITEBROWSER_HTML_DUMPER_H
 
-#include <litehtml.h>
+#include <litehtml/litehtml.h>
 #include <fstream>
 
 #define BUFF_SIZE    (10 * 1024)
diff --git src/html_host.h src/html_host.h
index 3e60843..20673d8 100644
--- src/html_host.h
+++ src/html_host.h
@@ -1,7 +1,7 @@
 #ifndef LITEBROWSER_HTML_HOST_H
 #define LITEBROWSER_HTML_HOST_H
 
-#include <litehtml.h>
+#include <litehtml/litehtml.h>
 
 namespace litebrowser
 {