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