Add graph references

references/igraph-1.0.1/etc/cmake/fuzz_helpers.cmake

@@ -0,0 +1,16 @@
+
+function(add_fuzzer NAME)
+  set(TARGET_NAME fuzzer_${NAME})
+
+  add_executable(${TARGET_NAME} EXCLUDE_FROM_ALL ${PROJECT_SOURCE_DIR}/fuzzing/${NAME}.cpp)
+
+  add_dependencies(build_fuzzers ${TARGET_NAME})
+
+  target_link_libraries(${TARGET_NAME} PRIVATE igraph)
+
+  # The -fsanitize=fuzzer-no-link is already added by the top-level CMakeLists.txt
+  # for general fuzzer instrumentation. Additionally, we need -fsanitize=fuzzer
+  # for the fuzz targets, which do not contain a main() function, to link in the
+  # fuzz driver. See https://llvm.org/docs/LibFuzzer.html
+  target_link_options(${TARGET_NAME} PRIVATE -fsanitize=fuzzer)
+endfunction()