1  ###############################################################################
 2  # Configuration Options
 3  ###############################################################################
 4  
 5  CC = clang
 6  
 7  FIELD_ELEMENTS_PER_BLOB ?= 4096
 8  
 9  CFLAGS += -I../inc
10  CFLAGS += -Wall -Wextra -Werror -O0
11  CFLAGS += -DFIELD_ELEMENTS_PER_BLOB=$(FIELD_ELEMENTS_PER_BLOB)
12  CFLAGS += -g -fsanitize=fuzzer
13  
14  BLST = -L../lib -lblst
15  LIBBLST = ../lib/libblst.a
16  
17  # Default to no threads, to use all cores specify -1.
18  THREADS ?= 0
19  ifeq ($(THREADS), -1)
20  override THREADS = $(shell nproc --all)
21  endif
22  
23  # On macOS, you need to use clang from the llvm package.
24  ifneq ($(OS),Windows_NT)
25  UNAME_S := $(shell uname -s)
26  ifeq ($(UNAME_S),Darwin)
27  ENV_OPTS += PATH=$(shell brew --prefix llvm)/bin:$(PATH)
28  endif
29  endif
30  
31  ###############################################################################
32  # Helper targets
33  ###############################################################################
34  
35  .PHONY: targets
36  targets:
37  	@echo Available targets:
38  	@# List targets | filter fuzz targets | remove deps | add prefix
39  	@make -qp | grep "^fuzz_" | sed 's/:.*//' | sed 's/^/ - /' | sort | uniq
40  
41  $(LIBBLST):
42  	@echo [+] Building blst
43  	@make -C../src blst
44  
45  .PRECIOUS: %/corpus
46  %/corpus:
47  	@echo [+] Generating corpus
48  	@cd gen_corpus && go run .
49  
50  .PRECIOUS: %/fuzz
51  %/fuzz: %/fuzz.c ../src/c_kzg_4844.c %/corpus $(LIBBLST)
52  	@echo [+] Compiling $* fuzzer
53  	@$(ENV_OPTS) $(CC) $(CFLAGS) -o $@ $< $(BLST)
54  
55  .PHONY: run_fuzz_%
56  run_fuzz_%: %/fuzz
57  	@echo [+] Starting $* fuzzer
58  	@-./$< \
59  		-artifact_prefix=./$*/ \
60  		-workers=$(THREADS) \
61  		-jobs=$(THREADS) \
62  		-max_len=$(LEN) \
63  		./$*/corpus
64  
65  ###############################################################################
66  # Fuzzing targets
67  ###############################################################################
68  
69  # Length is (4096 * 32).
70  fuzz_blob_to_kzg_commitment: LEN=131072
71  fuzz_blob_to_kzg_commitment: run_fuzz_blob_to_kzg_commitment
72  
73  # Length is (4096 * 32) + 32.
74  fuzz_compute_kzg_proof: LEN=131104
75  fuzz_compute_kzg_proof: run_fuzz_compute_kzg_proof
76  
77  # Length is (4096 * 32) + 48.
78  fuzz_compute_blob_kzg_proof: LEN=131120
79  fuzz_compute_blob_kzg_proof: run_fuzz_compute_blob_kzg_proof
80  
81  # Length is 48 + 32 + 32 + 48.
82  fuzz_verify_kzg_proof: LEN=160
83  fuzz_verify_kzg_proof: run_fuzz_verify_kzg_proof
84  
85  # Length is (4096 * 32) + 48 + 48.
86  fuzz_verify_blob_kzg_proof: LEN=131168
87  fuzz_verify_blob_kzg_proof: run_fuzz_verify_blob_kzg_proof
88  
89  # Length is (3 * 4096 * 32) + (3 * 48) + (3 * 48).
90  fuzz_verify_blob_kzg_proof_batch: LEN=393504
91  fuzz_verify_blob_kzg_proof_batch: run_fuzz_verify_blob_kzg_proof_batch