Add simple fuzz-harness

fuzz/CMakeLists.txt

@@ -0,0 +1,16 @@
+# If google/oss-fuzz has set the fuzzing engine
+if(DEFINED ENV{LIB_FUZZING_ENGINE})
+    set(FUZZING_ENGINE $ENV{LIB_FUZZING_ENGINE})
+    set(FUZZING_COMPILE_FLAGS "")
+    set(FUZZING_LINK_FLAGS "${FUZZING_ENGINE}")
+else()
+    set(FUZZING_COMPILE_FLAGS "-fsanitize=fuzzer")
+    set(FUZZING_LINK_FLAGS "-fsanitize=fuzzer")
+endif()
+
+add_executable(fuzz_layout fuzz_layout.cpp)
+set_target_properties(fuzz_layout PROPERTIES
+    COMPILE_FLAGS "${FUZZING_COMPILE_FLAGS}"
+    LINK_FLAGS "${FUZZING_LINK_FLAGS}"
+)
+target_link_libraries(fuzz_layout yogacore)