twn_text: embed default font

CMakeLists.txt

@@ -354,5 +354,21 @@ link_deps(twn_third_parties)
 give_options(${TWN_TARGET})
 include_deps(${TWN_TARGET})
 link_deps(${TWN_TARGET})
-target_link_libraries(${TWN_TARGET} PUBLIC twn_third_parties)
 target_include_directories(${TWN_TARGET} PRIVATE ${TWN_ROOT_DIR}/src)
+target_link_libraries(${TWN_TARGET} PUBLIC
+        twn_third_parties
+        ${CMAKE_CURRENT_BINARY_DIR}/font.o)
+
+# embed resources
+# TODO: think of a portable way to compress/decompress them
+add_custom_command(
+        OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/font.o
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+        COMMAND ${CMAKE_LINKER} --relocatable --format binary
+                --output ${CMAKE_CURRENT_BINARY_DIR}/font.o
+                share/assets/Dernyns256.ttf
+        DEPENDS share/assets/Dernyns256.ttf
+)
+
+add_custom_target(asset-compilation ALL DEPENDS
+        ${CMAKE_CURRENT_BINARY_DIR}/font.o)