_ Git - ldk-c-bindings/blob - genbindings.sh

   1 #!/usr/bin/env bash
   2
   3 set -e
   4 set -x
   5
   6 if [ ! -d "$1/lightning" -o "$2" != "true" -a "$2" != "false" ]; then
   7         echo "USAGE: $0 path-to-rust-lightning allow-std"
   8         echo "allow-std must be either 'true' or 'false' to indicate if we should be built relying on time and pthread support"
   9         exit 1
  10 fi
  11
  12 export LC_ALL=C
  13
  14 # On reasonable systems, we can use realpath here, but OSX is a diva with 20-year-old software.
  15 ORIG_PWD="$(pwd)"
  16 cd "$1"
  17 LIGHTNING_PATH="$(pwd)"
  18 LIGHTNING_GIT="$(git describe --tag --dirty --abbrev=16)"
  19 cd "$ORIG_PWD"
  20
  21 # Generate (and reasonably test) C bindings
  22
  23 # First we set various compiler flags...
  24 HOST_PLATFORM="$(rustc --version --verbose | grep "host:" | awk '{ print $2 }')"
  25 ENV_TARGET=$(echo $HOST_PLATFORM | sed 's/-/_/g')
  26
  27 # Set path to include our rustc wrapper as well as cbindgen
  28 export LDK_RUSTC_PATH="$(which rustc)"
  29 export RUSTC="$(pwd)/deterministic-build-wrappers/rustc"
  30 PATH="$PATH:~/.cargo/bin"
  31
  32 # Set up CFLAGS and RUSTFLAGS vars appropriately for building libsecp256k1 and demo apps...
  33 BASE_CFLAGS="" # CFLAGS for libsecp256k1
  34 LOCAL_CFLAGS="" # CFLAGS for demo apps
  35
  36 # Remap paths so that our builds are deterministic
  37 BASE_RUSTFLAGS="--cfg=c_bindings --remap-path-prefix $LIGHTNING_PATH=rust-lightning --remap-path-prefix $(pwd)=ldk-c-bindings --remap-path-prefix $HOME/.cargo="
  38
  39 # If the C compiler supports it, also set -ffile-prefix-map
  40 echo "int main() {}" > genbindings_path_map_test_file.c
  41 clang -o /dev/null -ffile-prefix-map=$HOME/.cargo= genbindings_path_map_test_file.c > /dev/null 2>&1 &&
  42 export BASE_CFLAGS="-ffile-prefix-map=$HOME/.cargo="
  43
  44 BASE_CFLAGS="$BASE_CFLAGS -frandom-seed=42"
  45 LOCAL_CFLAGS="-Wall -Wno-nullability-completeness -pthread -Iinclude/"
  46
  47 HOST_OSX=false
  48 if [ "$HOST_PLATFORM" = "x86_64-apple-darwin" ]; then
  49         HOST_OSX=true
  50 elif [ "$HOST_PLATFORM" = "aarch64-apple-darwin" ]; then
  51         HOST_OSX=true
  52 fi
  53
  54 BASE_HOST_CFLAGS="$BASE_CFLAGS"
  55
  56 if [ "$HOST_OSX" = "true" ]; then
  57         export MACOSX_DEPLOYMENT_TARGET=10.9
  58         LOCAL_CFLAGS="$LOCAL_CFLAGS --target=$HOST_PLATFORM -isysroot$(xcrun --show-sdk-path) -mmacosx-version-min=10.9"
  59         BASE_HOST_CFLAGS="$BASE_HOST_CFLAGS --target=$HOST_PLATFORM -isysroot$(xcrun --show-sdk-path) -mmacosx-version-min=10.9"
  60         # Targeting aarch64 appears to be supported only starting with Big Sur, so check it before use
  61         clang -o /dev/null $BASE_HOST_CFLAGS --target=aarch64-apple-darwin -mcpu=apple-a14 genbindings_path_map_test_file.c &&
  62         export CFLAGS_aarch64_apple_darwin="$BASE_HOST_CFLAGS --target=aarch64-apple-darwin -mcpu=apple-a14" ||
  63         echo "WARNING: Can not build targeting aarch64-apple-darin. Upgrade to Big Sur or try upstream clang"
  64 fi
  65
  66 rm genbindings_path_map_test_file.c
  67
  68 case "$ENV_TARGET" in
  69         "x86_64"*)
  70                 export RUSTFLAGS="$BASE_RUSTFLAGS -C target-cpu=sandybridge"
  71                 export CFLAGS_$ENV_TARGET="$BASE_HOST_CFLAGS -march=sandybridge -mcpu=sandybridge -mtune=sandybridge"
  72                 ;;
  73         "aarch64_apple_darwin")
  74                 export RUSTFLAGS="$BASE_RUSTFLAGS -C target-cpu=apple-a14"
  75                 export CFLAGS_$ENV_TARGET="$BASE_HOST_CFLAGS -mcpu=apple-a14"
  76                 ;;
  77         *)
  78                 # Assume this isn't targeted at another host and build for the host's CPU.
  79                 export RUSTFLAGS="$BASE_RUSTFLAGS -C target-cpu=native"
  80                 export CFLAGS_$ENV_TARGET="$BASE_HOST_CFLAGS -mcpu=native"
  81                 ;;
  82 esac
  83
  84 # First build the latest c-bindings-gen binary
  85 cd c-bindings-gen && cargo build --release && cd ..
  86
  87 # Then wipe all the existing C bindings (because we're being run in the right directory)
  88 # note that we keep the few manually-generated files first:
  89 mv lightning-c-bindings/src/c_types/mod.rs ./
  90 mv lightning-c-bindings/src/bitcoin ./
  91
  92 # Before we try to sed the Cargo.toml, generate version define tags
  93 # (ignoring any files that we're about to generate)
  94
  95 git checkout lightning-c-bindings/src
  96 git checkout lightning-c-bindings/include
  97 BINDINGS_GIT="$(git describe --tag --dirty --abbrev=16)"
  98 echo "$(cat <<EOF
  99 #ifndef _LDK_HEADER_VER
 100 static inline int _ldk_strncmp(const char *s1, const char *s2, uint64_t n) {
 101         if (n && *s1 != *s2) return 1;
 102         while (n && *s1 != 0 && *s2 != 0) {
 103                 s1++; s2++; n--;
 104                 if (n && *s1 != *s2) return 1;
 105         }
 106         return 0;
 107 }
 108
 109 #define _LDK_HEADER_VER "${LIGHTNING_GIT}"
 110 #define _LDK_C_BINDINGS_HEADER_VER "${BINDINGS_GIT}"
 111 static inline const char* check_get_ldk_version() {
 112         LDKStr bin_ver = _ldk_get_compiled_version();
 113         if (_ldk_strncmp(_LDK_HEADER_VER, (const char*)bin_ver.chars, bin_ver.len) != 0) {
 114         // Version mismatch, we don't know what we're running!
 115                 return 0;
 116         }
 117         return _LDK_HEADER_VER;
 118 }
 119 static inline const char* check_get_ldk_bindings_version() {
 120         LDKStr bin_ver = _ldk_c_bindings_get_compiled_version();
 121         if (_ldk_strncmp(_LDK_C_BINDINGS_HEADER_VER, (const char*)bin_ver.chars, bin_ver.len) != 0) {
 122         // Version mismatch, we don't know what we're running!
 123                 return 0;
 124         }
 125         return _LDK_C_BINDINGS_HEADER_VER;
 126 }
 127 #endif /* _LDK_HEADER_VER */
 128 EOF
 129 )" > lightning-c-bindings/include/ldk_ver.h
 130
 131 rm -rf lightning-c-bindings/src
 132
 133 mkdir -p lightning-c-bindings/src/{c_types,lightning}
 134 mv ./mod.rs lightning-c-bindings/src/c_types/
 135 mv ./bitcoin lightning-c-bindings/src/
 136
 137 # Finally, run the c-bindings-gen binary, building fresh bindings.
 138 OUT="$(pwd)/lightning-c-bindings/src"
 139 OUT_TEMPL="$(pwd)/lightning-c-bindings/src/c_types/derived.rs"
 140 OUT_F="$(pwd)/lightning-c-bindings/include/ldk_rust_types.h"
 141 OUT_CPP="$(pwd)/lightning-c-bindings/include/lightningpp.hpp"
 142 BIN="$(pwd)/c-bindings-gen/target/release/c-bindings-gen"
 143
 144 function is_gnu_sed(){
 145   sed --version >/dev/null 2>&1
 146 }
 147
 148 function add_crate() {
 149         pushd "$LIGHTNING_PATH/$1"
 150         RUSTC_BOOTSTRAP=1 cargo rustc --profile=check --no-default-features $3 -- --cfg=c_bindings -Zunpretty=expanded > /tmp/$1-crate-source.txt
 151         popd
 152         if [ "$HOST_OSX" = "true" ]; then
 153                 sed -i".original" "1i\\
 154 pub mod $2 {
 155 " /tmp/$1-crate-source.txt
 156         else
 157                 sed -i "1ipub mod $2 {\n" /tmp/$1-crate-source.txt
 158         fi
 159         echo "}" >> /tmp/$1-crate-source.txt
 160         cat /tmp/$1-crate-source.txt >> /tmp/crate-source.txt
 161         rm /tmp/$1-crate-source.txt
 162         if is_gnu_sed; then
 163                 sed -E -i 's|#*'$1' = \{ .*|'$1' = \{ path = "'"$LIGHTNING_PATH"'/'$1'", default-features = false }|' lightning-c-bindings/Cargo.toml
 164         else
 165                 # OSX sed is for some reason not compatible with GNU sed
 166                 sed -E -i '' 's|#*'$1' = \{ .*|'$1' = \{ path = "'"$LIGHTNING_PATH"'/'$1'", default-features = false }|' lightning-c-bindings/Cargo.toml
 167         fi
 168 }
 169
 170 function drop_crate() {
 171         if is_gnu_sed; then
 172                 sed -E -i 's|'$1' = \{ (.*)|#'$1' = \{ \1|' lightning-c-bindings/Cargo.toml
 173         else
 174                 # OSX sed is for some reason not compatible with GNU sed
 175                 sed -E -i '' 's|'$1' = \{ (.*)|#'$1' = \{ \1|' lightning-c-bindings/Cargo.toml
 176         fi
 177 }
 178
 179 echo > /tmp/crate-source.txt
 180 if [ "$2" = "true" ]; then
 181         add_crate lightning lightning --features=std
 182         add_crate "lightning-persister" "lightning_persister"
 183         add_crate "lightning-background-processor" "lightning_background_processor"
 184         add_crate "lightning-invoice" "lightning_invoice" --features=std
 185         add_crate "lightning-rapid-gossip-sync" "lightning_rapid_gossip_sync"
 186         CARGO_BUILD_ARGS="--features=std"
 187 else
 188         add_crate lightning lightning --features=no-std
 189         drop_crate "lightning-persister"
 190         drop_crate "lightning-background-processor"
 191         drop_crate "lightning-rapid-gossip-sync"
 192         add_crate "lightning-invoice" "lightning_invoice" --features=no-std
 193         CARGO_BUILD_ARGS="--features=no-std"
 194 fi
 195
 196 cat /tmp/crate-source.txt | RUST_BACKTRACE=1 "$BIN" "$OUT/" "$OUT_TEMPL" "$OUT_F" "$OUT_CPP"
 197
 198 echo "$(cat <<EOF
 199 #[no_mangle]
 200 pub extern "C" fn _ldk_get_compiled_version() -> crate::c_types::Str {
 201         "${LIGHTNING_GIT}".into()
 202 }
 203 #[no_mangle]
 204 pub extern "C" fn _ldk_c_bindings_get_compiled_version() -> crate::c_types::Str {
 205         "${BINDINGS_GIT}".into()
 206 }
 207 EOF
 208 )" >> lightning-c-bindings/src/version.rs
 209
 210 # Now cd to lightning-c-bindings, build the generated bindings, and call cbindgen to build a C header file
 211 cd lightning-c-bindings
 212
 213 RUSTFLAGS="$RUSTFLAGS --cfg=test_mod_pointers" cargo build $CARGO_BUILD_ARGS
 214 if [ "$CFLAGS_aarch64_apple_darwin" != "" ]; then
 215         RUSTFLAGS="$BASE_RUSTFLAGS -C target-cpu=apple-a14" cargo build $CARGO_BUILD_ARGS --target aarch64-apple-darwin
 216 fi
 217 cbindgen -v --config cbindgen.toml -o include/lightning.h >/dev/null 2>&1
 218
 219 # cbindgen is relatively braindead when exporting typedefs -
 220 # it happily exports all our typedefs for private types, even with the
 221 # generics we specified in C mode! So we drop all those types manually here.
 222 if is_gnu_sed; then
 223         sed -i 's/typedef LDKnative.*Import.*LDKnative.*;//g' include/lightning.h
 224
 225         # stdlib.h doesn't exist in clang's wasm sysroot, and cbindgen
 226         # doesn't actually use it anyway, so drop the import.
 227         sed -i 's/#include <stdlib.h>/#include "ldk_rust_types.h"/g' include/lightning.h
 228 else
 229         # OSX sed is for some reason not compatible with GNU sed
 230         sed -i '' 's/typedef LDKnative.*Import.*LDKnative.*;//g' include/lightning.h
 231
 232         # stdlib.h doesn't exist in clang's wasm sysroot, and cbindgen
 233         # doesn't actually use it anyway, so drop the import.
 234         sed -i '' 's/#include <stdlib.h>/#include "ldk_rust_types.h"/g' include/lightning.h
 235 fi
 236
 237 # Build C++ class methods which call trait methods
 238 echo "Updating C++ header, this may take some time, especially on macOS"
 239 set +x # Echoing every command is very verbose here
 240 OLD_IFS="$IFS"
 241 export IFS=''
 242 echo '#include <string.h>' > include/lightningpp_new.hpp
 243 echo 'namespace LDK {' >> include/lightningpp_new.hpp
 244 echo '// Forward declarations' >> include/lightningpp_new.hpp
 245 cat include/lightningpp.hpp | sed -n 's/class \(.*\) {/class \1;/p' >> include/lightningpp_new.hpp
 246 echo '' >> include/lightningpp_new.hpp
 247
 248 DECLS=""
 249 while read LINE; do
 250         case "$LINE" in
 251                 "#include <string.h>")
 252                         # We already printed this above.
 253                         ;;
 254                 "namespace LDK {")
 255                         # We already printed this above.
 256                         ;;
 257                 "}")
 258                         # We'll print this at the end
 259                         ;;
 260                 "XXX"*)
 261                         NEW_STRUCT_NAME="$(echo "$LINE" | awk '{ print $2 }')"
 262                         if [ "$NEW_STRUCT_NAME" != "$STRUCT_NAME" ]; then
 263                                 STRUCT_CONTENTS="$(cat include/lightning.h  | sed -n -e "/struct LDK$NEW_STRUCT_NAME/{:s" -e "/\} LDK$NEW_STRUCT_NAME;/!{N" -e "b s" -e "}" -e p -e "}")"
 264                         fi
 265                         STRUCT_NAME="$NEW_STRUCT_NAME"
 266                         METHOD_NAME="$(echo "$LINE" | awk '{ print $3 }')"
 267                         METHOD="$(echo "$STRUCT_CONTENTS" | grep "(\*$METHOD_NAME)")"
 268                         if [ "$METHOD" = "" ]; then
 269                                 echo "Unable to find method declaration for $LINE"
 270                                 exit 1
 271                         fi
 272                         RETVAL="$(echo "$METHOD" | sed 's/[ ]*\([A-Za-z0-9 _]*\)(\*\(.*\)).*/\1/' | sed 's/^struct LDK/LDK::/g' | tr -d ' ')"
 273                         [ "$RETVAL" = "LDK::SecretKey" ] && RETVAL="LDKSecretKey"
 274                         [ "$RETVAL" = "LDK::PublicKey" ] && RETVAL="LDKPublicKey"
 275                         [ "$RETVAL" = "LDK::ThirtyTwoBytes" ] && RETVAL="LDKThirtyTwoBytes"
 276                         PARAMS="$(echo "$METHOD" | sed 's/.*(\*.*)(\(const \)*void \*this_arg\(, \)*\(.*\));/\3/')"
 277
 278                         echo -e "\tinline $RETVAL $METHOD_NAME($PARAMS);" >> include/lightningpp_new.hpp
 279                         DECLS="$DECLS"$'\n'"inline $RETVAL $STRUCT_NAME::$METHOD_NAME($PARAMS) {"
 280
 281                         DECLS="$DECLS"$'\n'$'\t'
 282                         [ "$RETVAL" != "void" ] && DECLS="$DECLS$RETVAL ret = "
 283                         DECLS="$DECLS(self.$METHOD_NAME)(self.this_arg"
 284
 285                         IFS=','; for PARAM in $PARAMS; do
 286                                 DECLS="$DECLS, "
 287                                 DECLS="$DECLS$(echo $PARAM | sed 's/.* (*\**\([a-zA-Z0-9_]*\)\()[\[0-9\]*]\)*/\1/')"
 288                         done
 289                         IFS=''
 290
 291                         DECLS="$DECLS);"
 292                         [ "$RETVAL" != "void" ] && DECLS="$DECLS"$'\n'$'\t'"return ret;"
 293                         DECLS="$DECLS"$'\n'"}"
 294                         ;;
 295                 *)
 296                         echo "$LINE" >> include/lightningpp_new.hpp
 297         esac
 298 done < include/lightningpp.hpp
 299 echo "$DECLS" >> include/lightningpp_new.hpp
 300 echo "}" >> include/lightningpp_new.hpp
 301 export IFS="$OLD_IFS"
 302 set -x
 303 mv include/lightningpp_new.hpp include/lightningpp.hpp
 304
 305 # Finally, sanity-check the generated C and C++ bindings with demo apps:
 306 # Naively run the C demo app:
 307 gcc $LOCAL_CFLAGS -Wall -g -pthread demo.c target/debug/libldk.a -ldl -lm
 308 ./a.out
 309
 310 # And run the C++ demo app
 311 if [ "$2" = "true" ]; then
 312         g++ $LOCAL_CFLAGS -std=c++11 -Wall -g -pthread demo.cpp -Ltarget/debug/ -lldk -ldl
 313         LD_LIBRARY_PATH=target/debug/ ./a.out > /dev/null
 314 fi
 315
 316 # Finally, run the C++ demo app with our native networking library
 317 # in valgrind to test memory model correctness and lack of leaks.
 318 gcc $LOCAL_CFLAGS -fPIC -std=c99 -Wall -g -pthread -I../ldk-net ../ldk-net/ldk_net.c -c -o ldk_net.o
 319 if [ "$2" = "true" ]; then
 320         g++ $LOCAL_CFLAGS -std=c++11 -Wall -g -pthread -DREAL_NET -I../ldk-net ldk_net.o demo.cpp target/debug/libldk.a -ldl -lm
 321         if [ -x "`which valgrind`" -a "$(uname -m)" != "ppc64le" ]; then
 322                 valgrind --error-exitcode=4 --memcheck:leak-check=full --show-leak-kinds=all ./a.out
 323                 echo
 324         else
 325                 echo "WARNING: Please install valgrind for more testing"
 326                 ./a.out
 327         fi
 328 fi
 329
 330
 331 # Test a statically-linked C++ version, tracking the resulting binary size and runtime
 332 # across debug, LTO, and cross-language LTO builds (using the same compiler each time).
 333 if [ "$2" = "true" ]; then
 334         clang++ $LOCAL_CFLAGS -std=c++11 demo.cpp target/debug/libldk.a -ldl
 335         strip ./a.out
 336         echo " C++ Bin size and runtime w/o optimization:"
 337         ls -lha a.out
 338         time ./a.out > /dev/null
 339 fi
 340
 341 # Then, check with memory sanitizer, if we're on Linux and have rustc nightly
 342 if [ "$HOST_PLATFORM" = "x86_64-unknown-linux-gnu" ]; then
 343         if cargo +nightly --version >/dev/null 2>&1; then
 344                 LLVM_V=$(rustc +nightly --version --verbose | grep "LLVM version" | awk '{ print substr($3, 0, 2); }')
 345                 if [ -x "$(which clang-$LLVM_V)" ]; then
 346                         cargo +nightly clean
 347                         cargo +nightly rustc $CARGO_BUILD_ARGS -Zbuild-std=std,panic_abort --target x86_64-unknown-linux-gnu -v -- -Zsanitizer=memory -Zsanitizer-memory-track-origins -Cforce-frame-pointers=yes
 348                         mv target/x86_64-unknown-linux-gnu/debug/libldk.* target/debug/
 349
 350                         # Sadly, std doesn't seem to compile into something that is memsan-safe as of Aug 2020,
 351                         # so we'll always fail, not to mention we may be linking against git rustc LLVM which
 352                         # may differ from clang-llvm, so just allow everything here to fail.
 353                         set +e
 354
 355                         # First the C demo app...
 356                         clang-$LLVM_V $LOCAL_CFLAGS -fsanitize=memory -fsanitize-memory-track-origins -g demo.c target/debug/libldk.a -ldl
 357                         ./a.out
 358
 359                         if [ "$2" = "true" ]; then
 360                                 # ...then the C++ demo app
 361                                 clang++-$LLVM_V $LOCAL_CFLAGS -std=c++11 -fsanitize=memory -fsanitize-memory-track-origins -g demo.cpp target/debug/libldk.a -ldl
 362                                 ./a.out >/dev/null
 363
 364                                 # ...then the C++ demo app with the ldk_net network implementation
 365                                 clang-$LLVM_V $LOCAL_CFLAGS -std=c99 -fsanitize=memory -fsanitize-memory-track-origins -g -I../ldk-net ../ldk-net/ldk_net.c -c -o ldk_net.o
 366                                 clang++-$LLVM_V $LOCAL_CFLAGS -std=c++11 -fsanitize=memory -fsanitize-memory-track-origins -g -DREAL_NET -I../ldk-net ldk_net.o demo.cpp target/debug/libldk.a -ldl
 367                                 ./a.out >/dev/null
 368                         fi
 369
 370                         # restore exit-on-failure
 371                         set -e
 372                 else
 373                         echo "WARNING: Can't use memory sanitizer without clang-$LLVM_V"
 374                 fi
 375         else
 376                 echo "WARNING: Can't use memory sanitizer without rustc nightly"
 377         fi
 378 else
 379         echo "WARNING: Can't use memory sanitizer on non-Linux, non-x86 platforms"
 380 fi
 381
 382 RUSTC_LLVM_V=$(rustc --version --verbose | grep "LLVM version" | awk '{ print substr($3, 0, 2); }')
 383
 384 if [ "$HOST_OSX" = "true" ]; then
 385         # Apple is special, as always, and their versions of clang aren't
 386         # compatible with upstream LLVM.
 387         if [ "$(clang --version | grep 'Apple clang')" != "" ]; then
 388                 echo "Apple clang isn't compatible with upstream clang, install upstream clang"
 389                 CLANG_LLVM_V="0"
 390         else
 391                 CLANG_LLVM_V=$(clang --version | head -n1 | awk '{ print substr($3, 0, 2); }')
 392                 if [ -x "$(which ld64.lld)" ]; then
 393                         LLD_LLVM_V="$(ld64.lld --version | awk '{ print substr($2, 0, 2); }')"
 394                 fi
 395         fi
 396 else
 397         CLANG_LLVM_V=$(clang --version | head -n1 | awk '{ print substr($4, 0, 2); }')
 398         if [ -x "$(which ld.lld)" ]; then
 399                 LLD_LLVM_V="$(ld.lld --version | awk '{ print $2; }')"
 400                 if [ "$LLD_LLVM_V" = "LLD" ]; then # eg if the output is "Debian LLD ..."
 401                         LLD_LLVM_V="$(ld.lld --version | awk '{ print substr($3, 0, 2); }')"
 402                 else
 403                         LLD_LLVM_V="$(ld.lld --version | awk '{ print substr($2, 0, 2); }')"
 404                 fi
 405         fi
 406 fi
 407
 408
 409 if [ "$CLANG_LLVM_V" = "$RUSTC_LLVM_V" ]; then
 410         CLANG=clang
 411         CLANGPP=clang++
 412         if [ "$LLD_LLVM_V" = "$CLANG_LLVM_V" ]; then
 413                 LLD=lld
 414         fi
 415 elif [ -x "$(which clang-$RUSTC_LLVM_V)" ]; then
 416         CLANG="$(which clang-$RUSTC_LLVM_V)"
 417         CLANGPP="$(which clang++-$RUSTC_LLVM_V || echo clang++)"
 418         if [ "$($CLANG --version)" != "$($CLANGPP --version)" ]; then
 419                 echo "$CLANG and $CLANGPP are not the same version of clang!"
 420                 unset CLANG
 421                 unset CLANGPP
 422         fi
 423         if [ "$LLD_LLVM_V" != "$RUSTC_LLVM_V" ]; then
 424                 LLD="lld"
 425                 [ -x "$(which lld-$RUSTC_LLVM_V)" ] && LLD="lld-$RUSTC_LLVM_V"
 426                 LLD_LLVM_V="$(ld.lld-$RUSTC_LLVM_V --version | awk '{ print $2; }')"
 427                 if [ "$LLD_LLVM_V" = "LLD" ]; then # eg if the output is "Debian LLD ..."
 428                         LLD_LLVM_V="$(ld.lld-$RUSTC_LLVM_V --version | awk '{ print substr($3, 0, 2); }')"
 429                 else
 430                         LLD_LLVM_V="$(ld.lld-$RUSTC_LLVM_V --version | awk '{ print substr($2, 0, 2); }')"
 431                 fi
 432                 if [ "$LLD_LLVM_V" != "$RUSTC_LLVM_V" ]; then
 433                         echo "Could not find a workable version of lld, not using cross-language LTO"
 434                         unset LLD
 435                 fi
 436         fi
 437 fi
 438
 439 if [ "$CLANG" != "" -a "$CLANGPP" = "" ]; then
 440         echo "WARNING: It appears you have a clang-$RUSTC_LLVM_V but not clang++-$RUSTC_LLVM_V. This is common, but leaves us unable to compile C++ with LLVM $RUSTC_LLVM_V"
 441         echo "You should create a symlink called clang++-$RUSTC_LLVM_V pointing to $CLANG in $(dirname $CLANG)"
 442 fi
 443
 444 # Finally, if we're on OSX or on Linux, build the final debug binary with address sanitizer (and leave it there)
 445 if [ "$HOST_PLATFORM" = "x86_64-unknown-linux-gnu" -o "$HOST_PLATFORM" = "x86_64-apple-darwin" ]; then
 446         if [ "$CLANGPP" != "" ]; then
 447                 if is_gnu_sed; then
 448                         sed -i.bk 's/,"cdylib"]/]/g' Cargo.toml
 449                 else
 450                         # OSX sed is for some reason not compatible with GNU sed
 451                         sed -i .bk 's/,"cdylib"]/]/g' Cargo.toml
 452                 fi
 453
 454                 if [ "$CFLAGS_aarch64_apple_darwin" != "" ]; then
 455                         RUSTFLAGS="$BASE_RUSTFLAGS -C target-cpu=apple-a14" RUSTC_BOOTSTRAP=1 cargo rustc $CARGO_BUILD_ARGS --target aarch64-apple-darwin -v -- -Zsanitizer=address -Cforce-frame-pointers=yes || ( mv Cargo.toml.bk Cargo.toml; exit 1)
 456                 fi
 457                 RUSTFLAGS="$RUSTFLAGS --cfg=test_mod_pointers" RUSTC_BOOTSTRAP=1 cargo rustc $CARGO_BUILD_ARGS -v -- -Zsanitizer=address -Cforce-frame-pointers=yes || ( mv Cargo.toml.bk Cargo.toml; exit 1)
 458                 mv Cargo.toml.bk Cargo.toml
 459
 460                 # First the C demo app...
 461                 $CLANG $LOCAL_CFLAGS -fsanitize=address -g demo.c target/debug/libldk.a -ldl
 462                 ASAN_OPTIONS='detect_leaks=1 detect_invalid_pointer_pairs=1 detect_stack_use_after_return=1' ./a.out
 463
 464                 if [ "$2" = "true" ]; then
 465                         # ...then the C++ demo app
 466                         $CLANGPP $LOCAL_CFLAGS -std=c++11 -fsanitize=address -g demo.cpp target/debug/libldk.a -ldl
 467                         ASAN_OPTIONS='detect_leaks=1 detect_invalid_pointer_pairs=1 detect_stack_use_after_return=1' ./a.out >/dev/null
 468
 469                         # ...then the C++ demo app with the ldk_net network implementation
 470                         $CLANG $LOCAL_CFLAGS -fPIC -fsanitize=address -g -I../ldk-net ../ldk-net/ldk_net.c -c -o ldk_net.o
 471                         $CLANGPP $LOCAL_CFLAGS -std=c++11 -fsanitize=address -g -DREAL_NET -I../ldk-net ldk_net.o demo.cpp target/debug/libldk.a -ldl
 472                         ASAN_OPTIONS='detect_leaks=1 detect_invalid_pointer_pairs=1 detect_stack_use_after_return=1' ./a.out >/dev/null
 473                 fi
 474         else
 475                 echo "WARNING: Please install clang-$RUSTC_LLVM_V and clang++-$RUSTC_LLVM_V to build with address sanitizer"
 476         fi
 477 else
 478         echo "WARNING: Can't use address sanitizer on non-Linux, non-OSX non-x86 platforms"
 479 fi
 480
 481 # Now build with LTO on on both C++ and rust, but without cross-language LTO:
 482 # Clear stale release build artifacts from previous runs
 483 cargo clean --release
 484 CARGO_PROFILE_RELEASE_LTO=true RUSTFLAGS="$RUSTFLAGS -C embed-bitcode=yes -C lto" cargo build $CARGO_BUILD_ARGS -v --release
 485 if [ "$2" = "true" ]; then
 486         clang++ $LOCAL_CFLAGS -std=c++11 -O2 demo.cpp target/release/libldk.a -ldl
 487 fi
 488
 489 strip ./a.out
 490 echo "C++ Bin size and runtime with only RL (LTO) optimized:"
 491 ls -lha a.out
 492 time ./a.out > /dev/null
 493
 494 if [ "$CLANGPP" != "" ]; then
 495         # If we can use cross-language LTO, use it for building C dependencies (i.e. libsecp256k1) as well
 496         export CC="$CLANG"
 497         # The cc-rs crate tries to force -fdata-sections and -ffunction-sections on, which
 498         # breaks -fembed-bitcode, so we turn off cc-rs' default flags and specify exactly
 499         # what we want here.
 500         export CFLAGS_$ENV_TARGET="$BASE_HOST_CFLAGS -fPIC -fembed-bitcode -march=sandybridge -mcpu=sandybridge -mtune=sandybridge"
 501         export CRATE_CC_NO_DEFAULTS=true
 502 fi
 503
 504 if [ "$2" = "false" -a "$(rustc --print target-list | grep wasm32-wasi)" != "" ]; then
 505         # Test to see if clang supports wasm32 as a target (which is needed to build rust-secp256k1)
 506         echo "int main() {}" > genbindings_wasm_test_file.c
 507         if clang -nostdlib -o /dev/null --target=wasm32-wasi -Wl,--no-entry genbindings_wasm_test_file.c > /dev/null 2>&1; then
 508                 # And if it does, build a WASM binary without capturing errors
 509                 export CFLAGS_wasm32_wasi="$BASE_CFLAGS -target wasm32 -O1"
 510                 RUSTFLAGS="$BASE_RUSTFLAGS -C opt-level=1 --cfg=test_mod_pointers" cargo build $CARGO_BUILD_ARGS -v --target=wasm32-wasi
 511                 export CFLAGS_wasm32_wasi="$BASE_CFLAGS -fembed-bitcode -target wasm32 -Oz"
 512                 RUSTFLAGS="$BASE_RUSTFLAGS -C embed-bitcode=yes -C opt-level=z -C linker-plugin-lto -C lto" CARGO_PROFILE_RELEASE_LTO=true cargo build $CARGO_BUILD_ARGS -v --release --target=wasm32-wasi
 513         else
 514                 echo "Cannot build WASM lib as clang does not seem to support the wasm32-wasi target"
 515         fi
 516         rm genbindings_wasm_test_file.c
 517 fi
 518
 519 EXTRA_TARGETS=( $LDK_C_BINDINGS_EXTRA_TARGETS )
 520 EXTRA_CCS=( $LDK_C_BINDINGS_EXTRA_TARGET_CCS )
 521
 522 if [ ${#EXTRA_TARGETS[@]} != ${#EXTRA_CCS[@]} ]; then
 523         echo "LDK_C_BINDINGS_EXTRA_TARGETS and LDK_C_BINDINGS_EXTRA_TARGET_CCS didn't have the same number of elements!"
 524         exit 1
 525 fi
 526
 527 for IDX in ${!EXTRA_TARGETS[@]}; do
 528         EXTRA_ENV_TARGET=$(echo "${EXTRA_TARGETS[$IDX]}" | sed 's/-/_/g')
 529         export CFLAGS_$EXTRA_ENV_TARGET="$BASE_CFLAGS"
 530         export CC_$EXTRA_ENV_TARGET=${EXTRA_CCS[$IDX]}
 531         RUSTFLAGS="$BASE_RUSTFLAGS -C embed-bitcode=yes -C lto -C linker=${EXTRA_CCS[$IDX]}" CARGO_PROFILE_RELEASE_LTO=true cargo build $CARGO_BUILD_ARGS -v --release --target "${EXTRA_TARGETS[$IDX]}"
 532 done
 533
 534 if [ "$CLANGPP" != "" -a "$LLD" != "" ]; then
 535         # Finally, test cross-language LTO. Note that this will fail if rustc and clang++
 536         # build against different versions of LLVM (eg when rustc is installed via rustup
 537         # or Ubuntu packages). This should work fine on Distros which do more involved
 538         # packaging than simply shipping the rustup binaries (eg Debian should Just Work
 539         # here).
 540         LINK_ARG_FLAGS="-C link-arg=-fuse-ld=$LLD"
 541         if [ "$HOST_OSX" = "true" ]; then
 542                 export LDK_CLANG_PATH=$(which $CLANG)
 543                 export CLANG="$(pwd)/../deterministic-build-wrappers/clang-lto-link-osx"
 544                 for ARG in "CFLAGS_aarch64_apple_darwin"; do
 545                         MANUAL_LINK_CFLAGS="$MANUAL_LINK_CFLAGS -C link-arg=$ARG"
 546                 done
 547                 export CFLAGS_aarch64_apple_darwin="$CFLAGS_aarch64_apple_darwin -O3 -fPIC -fembed-bitcode"
 548                 LINK_ARG_FLAGS="$LINK_ARG_FLAGS -C link-arg="-isysroot$(xcrun --show-sdk-path)" -C link-arg=-mmacosx-version-min=10.9"
 549                 RUSTFLAGS="$BASE_RUSTFLAGS -C target-cpu=apple-a14 -C embed-bitcode=yes -C linker-plugin-lto -C lto -C linker=$CLANG $LINK_ARG_FLAGS -C link-arg=-mcpu=apple-a14" CARGO_PROFILE_RELEASE_LTO=true cargo build $CARGO_BUILD_ARGS -v --release --target aarch64-apple-darwin
 550         fi
 551         # If we're on an M1 don't bother building X86 binaries
 552         if [ "$HOST_PLATFORM" != "aarch64-apple-darwin" ]; then
 553                 export CFLAGS_$ENV_TARGET="$BASE_HOST_CFLAGS -O3 -fPIC -fembed-bitcode -march=sandybridge -mcpu=sandybridge -mtune=sandybridge"
 554                 # Rust doesn't recognize CFLAGS changes, so we need to clean build artifacts
 555                 cargo clean --release
 556                 CARGO_PROFILE_RELEASE_LTO=true RUSTFLAGS="$RUSTFLAGS -C embed-bitcode=yes -C linker-plugin-lto -C lto -C linker=$CLANG $LINK_ARG_FLAGS -C link-arg=-march=sandybridge -C link-arg=-mcpu=sandybridge -C link-arg=-mtune=sandybridge" cargo build $CARGO_BUILD_ARGS -v --release
 557
 558                 if [ "$2" = "true" ]; then
 559                         $CLANGPP $LOCAL_CFLAGS -flto -fuse-ld=$LLD -O2 demo.cpp target/release/libldk.a -ldl
 560                         strip ./a.out
 561                         echo "C++ Bin size and runtime with cross-language LTO:"
 562                         ls -lha a.out
 563                         time ./a.out > /dev/null
 564                 fi
 565         fi
 566 else
 567         if [ "$CFLAGS_aarch64_apple_darwin" != "" ]; then
 568                 RUSTFLAGS="$BASE_RUSTFLAGS -C embed-bitcode=yes -C lto -C target-cpu=apple-a14" CARGO_PROFILE_RELEASE_LTO=true cargo build $CARGO_BUILD_ARGS -v --release --target aarch64-apple-darwin
 569         fi
 570         echo "WARNING: Building with cross-language LTO is not avilable without clang-$RUSTC_LLVM_V"
 571 fi