add libnimbus_lc.a C library (#5122)

Add a new C library for processing light client data based on the Nimbus
implementation. This can be used from other, non-Nimbus components.

.github/workflows/ci.yml

@@ -64,15 +64,16 @@ jobs:
       - name: Check copyright year (Linux)
         if: github.event_name == 'pull_request' && runner.os == 'Linux'
         run: |
-          excluded_extensions="ans|json|md|png|txt"
+          excluded_files="config.yaml"
+          excluded_extensions="ans|json|md|png|ssz|txt"
 
           current_year=$(date +"%Y")
           outdated_files=()
           while read -r file; do
             if ! grep -qE 'Copyright \(c\) .*'$current_year' Status Research & Development GmbH' "$file"; then
               outdated_files+=("$file")
             fi
-          done < <(git diff --name-only --diff-filter=AM --ignore-submodules HEAD^ HEAD | grep -vE '\.('$excluded_extensions')$' || true)
+          done < <(git diff --name-only --diff-filter=AM --ignore-submodules HEAD^ HEAD | grep -vE '(\.('$excluded_extensions')|'$excluded_files')$' || true)
 
           if (( ${#outdated_files[@]} )); then
             echo "The following files do not have an up-to-date copyright year:"

.gitignore

@@ -51,7 +51,7 @@ build/
 test_keymanager_api
 test_sim
 
-/libnfuzz_linkerArgs.txt
+/*linkerArgs.txt
 
 # scripts/geth_binaries.sh
 geth-*.tar.gz

Makefile

@@ -54,11 +54,14 @@ endif
 
 # unconditionally built by the default Make target
 # TODO re-enable ncli_query if/when it works again
+TOOLS_CORE_CUSTOMCOMPILE := \
+	libnimbus_lc.a
+
 TOOLS_CORE := \
 	deposit_contract \
 	resttest \
 	logtrace \
-        mev_mock \
+	mev_mock \
 	ncli \
 	ncli_db \
 	ncli_split_keystore \
@@ -69,7 +72,8 @@ TOOLS_CORE := \
 	nimbus_validator_client \
 	nimbus_signing_node \
 	validator_db_aggregator \
-	ncli_testnet
+	ncli_testnet \
+	$(TOOLS_CORE_CUSTOMCOMPILE)
 
 # This TOOLS/TOOLS_CORE decomposition is a workaroud so nimbus_beacon_node can
 # build on its own, and if/when that becomes a non-issue, it can be recombined
@@ -280,7 +284,8 @@ XML_TEST_BINARIES := \
 # test suite
 TEST_BINARIES := \
 	state_sim \
-	block_sim
+	block_sim \
+	test_libnimbus_lc
 .PHONY: $(TEST_BINARIES) $(XML_TEST_BINARIES) force_build_alone_all_tests
 
 # Preset-dependent tests
@@ -392,14 +397,23 @@ endif
 		rm -rf 0000-*.json t_slashprot_migration.* *.log block_sim_db
 	for TEST_BINARY in $(TEST_BINARIES); do \
 		PARAMS=""; \
+		REDIRECT=""; \
 		if [[ "$${TEST_BINARY}" == "state_sim" ]]; then PARAMS="--validators=8000 --slots=160"; \
 		elif [[ "$${TEST_BINARY}" == "block_sim" ]]; then PARAMS="--validators=8000 --slots=160"; \
+		elif [[ "$${TEST_BINARY}" == "test_libnimbus_lc" ]]; then REDIRECT="$${TEST_BINARY}.log"; \
 		fi; \
 		echo -e "\nRunning $${TEST_BINARY} $${PARAMS}\n"; \
-		build/$${TEST_BINARY} $${PARAMS} || { \
-			echo -e "\n$${TEST_BINARY} $${PARAMS} failed; Last 50 lines from the log:"; \
-			tail -n50 "$${TEST_BINARY}.log"; exit 1; \
-		}; \
+		if [[ "$${REDIRECT}" != "" ]]; then \
+			build/$${TEST_BINARY} $${PARAMS} > "$${REDIRECT}" && echo "OK" || { \
+				echo -e "\n$${TEST_BINARY} $${PARAMS} failed; Last 50 lines from the log:"; \
+				tail -n50 "$${TEST_BINARY}.log"; exit 1; \
+			}; \
+		else \
+			build/$${TEST_BINARY} $${PARAMS} || { \
+				echo -e "\n$${TEST_BINARY} $${PARAMS} failed; Last 50 lines from the log:"; \
+				tail -n50 "$${TEST_BINARY}.log"; exit 1; \
+			}; \
+		fi; \
 		done; \
 		rm -rf 0000-*.json t_slashprot_migration.* *.log block_sim_db
 
@@ -419,7 +433,7 @@ build/generate_makefile: tools/generate_makefile.nim | deps-common
 # It also requires Make to pass open file descriptors to the GCC process,
 # which is not possible if we let Nim handle this, so we generate and use a
 # makefile instead.
-$(TOOLS): | build deps
+$(filter-out $(TOOLS_CORE_CUSTOMCOMPILE),$(TOOLS)): | build deps
 	+ for D in $(TOOLS_DIRS); do [ -e "$${D}/$@.nim" ] && TOOL_DIR="$${D}" && break; done && \
 		echo -e $(BUILD_MSG) "build/$@" && \
 		MAKE="$(MAKE)" V="$(V)" $(ENV_SCRIPT) scripts/compile_nim_program.sh $@ "$${TOOL_DIR}/$@.nim" $(NIM_PARAMS) && \
@@ -728,6 +742,34 @@ gnosis-chain-dev-deposit: | gnosis-build deposit_contract
 clean-gnosis-chain:
 	$(call CLEAN_NETWORK,gnosis-chain)
 
+###
+### libnimbus_lc
+###
+
+libnimbus_lc.a: | build deps
+	+ echo -e $(BUILD_MSG) "build/$@" && \
+		set -x && \
+		rm -f build/$@ && \
+		$(ENV_SCRIPT) $(NIMC) c -d:disable_libbacktrace -d:release --app:staticlib --noMain --nimcache:nimcache/libnimbus_lc_static -o:build/$@ $(NIM_PARAMS) beacon_chain/libnimbus_lc/libnimbus_lc.nim $(SILENCE_WARNINGS) && \
+		echo -e $(BUILD_END_MSG) "build/$@"
+
+# `-Wno-maybe-uninitialized` in Linux: https://github.com/nim-lang/Nim/issues/22246
+test_libnimbus_lc: libnimbus_lc.a
+	+ echo -e $(BUILD_MSG) "build/$@" && \
+		set -x && \
+		case "$$(uname)" in \
+		Darwin) \
+			clang -D__DIR__="\"beacon_chain/libnimbus_lc\"" --std=c17 -Weverything -Werror -Wno-declaration-after-statement -Wno-nullability-extension -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -o build/test_libnimbus_lc beacon_chain/libnimbus_lc/test_libnimbus_lc.c build/libnimbus_lc.a -framework Security; \
+			;; \
+		MINGW64_*) \
+			gcc -D__DIR__="\"beacon_chain/libnimbus_lc\"" --std=c17 -Wall -Wextra -pedantic -Werror -pedantic-errors -flto -o build/test_libnimbus_lc -D_CRT_SECURE_NO_WARNINGS beacon_chain/libnimbus_lc/test_libnimbus_lc.c build/libnimbus_lc.a; \
+			;; \
+		*) \
+			gcc -D__DIR__="\"beacon_chain/libnimbus_lc\"" --std=c17 -Wall -Wextra -pedantic -Werror -pedantic-errors -Wno-maybe-uninitialized -flto -o build/test_libnimbus_lc beacon_chain/libnimbus_lc/test_libnimbus_lc.c build/libnimbus_lc.a; \
+			;; \
+		esac && \
+		echo -e $(BUILD_END_MSG) "build/$@"
+
 ###
 ### Other
 ###