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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,203 @@ | ||
| #!/usr/bin/env bash | ||
|
|
||
| export LC_ALL=C | ||
| set -Eeuo pipefail | ||
|
|
||
| # Declare paths to libraries | ||
| declare -A LIBS | ||
| LIBS[cli]="libbitcoin_cli.a" | ||
| LIBS[common]="libbitcoin_common.a" | ||
| LIBS[consensus]="libbitcoin_consensus.a" | ||
| LIBS[crypto]="crypto/.libs/libbitcoin_crypto_base.a crypto/.libs/libbitcoin_crypto_x86_shani.a crypto/.libs/libbitcoin_crypto_sse41.a crypto/.libs/libbitcoin_crypto_avx2.a" | ||
| LIBS[node]="libbitcoin_node.a" | ||
| LIBS[util]="libbitcoin_util.a" | ||
| LIBS[wallet]="libbitcoin_wallet.a" | ||
| LIBS[wallet_tool]="libbitcoin_wallet_tool.a" | ||
|
|
||
| # Declare allowed dependencies "X Y" where X is allowed to depend on Y. This | ||
| # list is taken from doc/design/libraries.md. | ||
| ALLOWED_DEPENDENCIES=( | ||
| "cli common" | ||
| "cli util" | ||
| "common consensus" | ||
| "common crypto" | ||
| "common util" | ||
| "consensus crypto" | ||
| "node common" | ||
| "node consensus" | ||
| "node crypto" | ||
| "node kernel" | ||
| "node util" | ||
| "util crypto" | ||
| "wallet common" | ||
| "wallet crypto" | ||
| "wallet util" | ||
| "wallet_tool util" | ||
| "wallet_tool wallet" | ||
| ) | ||
|
|
||
| # Add minor dependencies omitted from doc/design/libraries.md to keep the | ||
| # dependency diagram simple. | ||
| ALLOWED_DEPENDENCIES+=( | ||
| "wallet consensus" | ||
| "wallet_tool common" | ||
| "wallet_tool crypto" | ||
| ) | ||
|
|
||
| # Declare list of known errors that should be suppressed. | ||
| declare -A SUPPRESS | ||
| # init.cpp file currently calls Berkeley DB sanity check function on startup, so | ||
| # there is an undocumented dependency of the node library on the wallet library. | ||
| SUPPRESS["libbitcoin_node_a-init.o libbitcoin_wallet_a-bdb.o _ZN6wallet27BerkeleyDatabaseSanityCheckEv"]=1 | ||
| # init/common.cpp file calls InitError and InitWarning from interface_ui which | ||
| # is currently part of the node library. interface_ui should just be part of the | ||
| # common library instead, and is moved in | ||
| # https://github.com/bitcoin/bitcoin/issues/10102 | ||
| SUPPRESS["libbitcoin_common_a-common.o libbitcoin_node_a-interface_ui.o _Z11InitWarningRK13bilingual_str"]=1 | ||
| SUPPRESS["libbitcoin_common_a-common.o libbitcoin_node_a-interface_ui.o _Z9InitErrorRK13bilingual_str"]=1 | ||
| # rpc/external_signer.cpp adds defines node RPC methods but is built as part of the | ||
| # common library. It should be moved to the node library instead. | ||
| SUPPRESS["libbitcoin_common_a-external_signer.o libbitcoin_node_a-server.o _ZN9CRPCTable13appendCommandERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEPK11CRPCCommand"]=1 | ||
|
|
||
| usage() { | ||
| echo "Usage: $(basename "${BASH_SOURCE[0]}") [BUILD_DIR]" | ||
| } | ||
|
|
||
| # Output makefile targets, converting library .a paths to libtool .la targets | ||
| lib_targets() { | ||
| for lib in "${!LIBS[@]}"; do | ||
| for lib_path in ${LIBS[$lib]}; do | ||
| # shellcheck disable=SC2001 | ||
| sed 's:/.libs/\(.*\)\.a$:/\1.la:g' <<<"$lib_path" | ||
| done | ||
| done | ||
| } | ||
|
|
||
| # Extract symbol names and object names and write to text files | ||
| extract_symbols() { | ||
| local temp_dir="$1" | ||
| for lib in "${!LIBS[@]}"; do | ||
| for lib_path in ${LIBS[$lib]}; do | ||
| nm -o "$lib_path" | grep ' T ' | awk '{print $3, $1}' >> "${temp_dir}/${lib}_exports.txt" | ||
| nm -o "$lib_path" | grep ' U ' | awk '{print $3, $1}' >> "${temp_dir}/${lib}_imports.txt" | ||
| awk '{print $1}' "${temp_dir}/${lib}_exports.txt" | sort -u > "${temp_dir}/${lib}_exported_symbols.txt" | ||
| awk '{print $1}' "${temp_dir}/${lib}_imports.txt" | sort -u > "${temp_dir}/${lib}_imported_symbols.txt" | ||
| done | ||
| done | ||
| } | ||
|
|
||
| # Lookup object name(s) corresponding to symbol name in text file | ||
| obj_names() { | ||
| local symbol="$1" | ||
| local txt_file="$2" | ||
| sed -n "s/^$symbol [^:]\\+:\\([^:]\\+\\):[^:]*\$/\\1/p" "$txt_file" | sort -u | ||
| } | ||
|
|
||
| # Iterate through libraries and find disallowed dependencies | ||
| check_libraries() { | ||
| local temp_dir="$1" | ||
| local result=0 | ||
| for src in "${!LIBS[@]}"; do | ||
| for dst in "${!LIBS[@]}"; do | ||
| if [ "$src" != "$dst" ] && ! is_allowed "$src" "$dst"; then | ||
| if ! check_disallowed "$src" "$dst" "$temp_dir"; then | ||
| result=1 | ||
| fi | ||
| fi | ||
| done | ||
| done | ||
| check_not_suppressed | ||
| return $result | ||
| } | ||
|
|
||
| # Return whether src library is allowed to depend on dst. | ||
| is_allowed() { | ||
| local src="$1" | ||
| local dst="$2" | ||
| for allowed in "${ALLOWED_DEPENDENCIES[@]}"; do | ||
| if [ "$src $dst" = "$allowed" ]; then | ||
| return 0 | ||
| fi | ||
| done | ||
| return 1 | ||
| } | ||
|
|
||
| # Return whether src library imports any symbols from dst, assuming src is not | ||
| # allowed to depend on dst. | ||
| check_disallowed() { | ||
| local src="$1" | ||
| local dst="$2" | ||
| local temp_dir="$3" | ||
| local result=0 | ||
|
|
||
| # Loop over symbol names exported by dst and imported by src | ||
| while read symbol; do | ||
| local dst_obj | ||
| dst_obj=$(obj_names "$symbol" "${temp_dir}/${dst}_exports.txt") | ||
| while read src_obj; do | ||
| if ! check_suppress "$src_obj" "$dst_obj" "$symbol"; then | ||
| echo "Error: $src_obj depends on $dst_obj symbol '$(c++filt "$symbol")', can suppess with:" | ||
| echo " SUPPRESS[\"$src_obj $dst_obj $symbol\"]=1" | ||
| result=1 | ||
| fi | ||
| done < <(obj_names "$symbol" "${temp_dir}/${src}_imports.txt") | ||
| done < <(comm -12 "${temp_dir}/${dst}_exported_symbols.txt" "${temp_dir}/${src}_imported_symbols.txt") | ||
| return $result | ||
| } | ||
|
|
||
| # Declare array to track errors which were suppressed. | ||
| declare -A SUPPRESSED | ||
|
|
||
| # Return whether error should be suppressed and record suppresssion in | ||
| # SUPPRESSED array. | ||
| check_suppress() { | ||
| local src_obj="$1" | ||
| local dst_obj="$2" | ||
| local symbol="$3" | ||
| for suppress in "${!SUPPRESS[@]}"; do | ||
| read suppress_src suppress_dst suppress_pattern <<<"$suppress" | ||
| if [[ "$src_obj" == "$suppress_src" && "$dst_obj" == "$suppress_dst" && "$symbol" =~ $suppress_pattern ]]; then | ||
| SUPPRESSED["$suppress"]=1 | ||
| return 0 | ||
| fi | ||
| done | ||
| return 1 | ||
| } | ||
|
|
||
| # Warn about error which were supposed to be suppress, but were not encountered. | ||
| check_not_suppressed() { | ||
| for suppress in "${!SUPPRESS[@]}"; do | ||
| if [[ ! -v SUPPRESSED[$suppress] ]]; then | ||
| echo >&2 "Warning: suppression '$suppress' was ignored, consider deleting." | ||
| fi | ||
| done | ||
| } | ||
|
|
||
| # Check arguments. | ||
| if [ "$#" = 0 ]; then | ||
| BUILD_DIR="$(dirname "${BASH_SOURCE[0]}")/../../src" | ||
| elif [ "$#" = 1 ]; then | ||
| BUILD_DIR="$1" | ||
| else | ||
| echo >&2 "Error: wrong number of arguments." | ||
| usage >&2 | ||
| exit 1 | ||
| fi | ||
| if [ ! -f "$BUILD_DIR/Makefile" ]; then | ||
| echo >&2 "Error: directory '$BUILD_DIR' does not contain a makefile, please specify path to build directory for library targets." | ||
| usage >&2 | ||
| exit 1 | ||
| fi | ||
|
|
||
| # Build libraries and run checks. | ||
| cd "$BUILD_DIR" | ||
| # shellcheck disable=SC2046 | ||
| make -j"$(nproc)" $(lib_targets) | ||
| TEMP_DIR="$(mktemp -d)" | ||
| extract_symbols "$TEMP_DIR" | ||
| if check_libraries "$TEMP_DIR"; then | ||
| echo "Success! No unexpected dependencies were detected." | ||
| else | ||
| echo >&2 "Error: Unexpected dependencies were detected. Check previous output." | ||
| fi | ||
| rm -r "$TEMP_DIR" |
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