_ 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 if [ "$2" = "true" ]; then
  13         FEATURES_ARGS='--features=allow_wallclock_use'
  14         FEATURES='"allow_wallclock_use"'
  15 fi
  16
  17 # On reasonable systems, we can use realpath here, but OSX is a diva with 20-year-old software.
  18 ORIG_PWD="$(pwd)"
  19 cd "$1/lightning"
  20 LIGHTNING_PATH="$(pwd)"
  21 cd "$ORIG_PWD"
  22
  23 # Generate (and reasonably test) C bindings
  24
  25 # First build the latest c-bindings-gen binary
  26 cd c-bindings-gen && cargo build --release && cd ..
  27
  28 # Then wipe all the existing C bindings (because we're being run in the right directory)
  29 # note that we keep the few manually-generated files first:
  30 mv lightning-c-bindings/src/c_types/mod.rs ./
  31 mv lightning-c-bindings/src/bitcoin ./
  32
  33 rm -rf lightning-c-bindings/src
  34
  35 mkdir -p lightning-c-bindings/src/c_types/
  36 mv ./mod.rs lightning-c-bindings/src/c_types/
  37 mv ./bitcoin lightning-c-bindings/src/
  38
  39 # Finally, run the c-bindings-gen binary, building fresh bindings.
  40 OUT="$(pwd)/lightning-c-bindings/src"
  41 OUT_TEMPL="$(pwd)/lightning-c-bindings/src/c_types/derived.rs"
  42 OUT_F="$(pwd)/lightning-c-bindings/include/rust_types.h"
  43 OUT_CPP="$(pwd)/lightning-c-bindings/include/lightningpp.hpp"
  44 BIN="$(pwd)/c-bindings-gen/target/release/c-bindings-gen"
  45
  46 pushd "$LIGHTNING_PATH"
  47 RUSTC_BOOTSTRAP=1 cargo rustc $FEATURES_ARGS --profile=check -- -Zunstable-options --pretty=expanded |
  48         RUST_BACKTRACE=1 "$BIN" "$OUT/" lightning "$OUT_TEMPL" "$OUT_F" "$OUT_CPP"
  49 popd
  50
  51 HOST_PLATFORM="$(rustc --version --verbose | grep "host:")"
  52 if [ "$HOST_PLATFORM" = "host: x86_64-apple-darwin" ]; then
  53         # OSX sed is for some reason not compatible with GNU sed
  54         sed -i '' 's|lightning = { .*|lightning = { path = "'"$LIGHTNING_PATH"'", features = ['"$FEATURES"'] }|' lightning-c-bindings/Cargo.toml
  55 else
  56         sed -i 's|lightning = { .*|lightning = { path = "'"$LIGHTNING_PATH"'", features = ['"$FEATURES"'] }|' lightning-c-bindings/Cargo.toml
  57 fi
  58
  59 # Set path to include our rustc wrapper as well as cbindgen
  60 PATH="$(pwd)/deterministic-build-wrappers:$PATH:~/.cargo/bin"
  61 # Now cd to lightning-c-bindings, build the generated bindings, and call cbindgen to build a C header file
  62 cd lightning-c-bindings
  63 # Remap paths so that our builds are deterministic
  64 export RUSTFLAGS="--remap-path-prefix $LIGHTNING_PATH=rust-lightning --remap-path-prefix $(pwd)=ldk-c-bindings --remap-path-prefix $HOME/.cargo= -C target-cpu=generic"
  65 export CFLAGS="-ffile-prefix-map=$HOME/.cargo="
  66
  67 cargo build
  68 cbindgen -v --config cbindgen.toml -o include/lightning.h >/dev/null 2>&1
  69
  70 # cbindgen is relatively braindead when exporting typedefs -
  71 # it happily exports all our typedefs for private types, even with the
  72 # generics we specified in C mode! So we drop all those types manually here.
  73 if [ "$HOST_PLATFORM" = "host: x86_64-apple-darwin" ]; then
  74         # OSX sed is for some reason not compatible with GNU sed
  75         sed -i '' 's/typedef LDKnative.*Import.*LDKnative.*;//g' include/lightning.h
  76
  77         # stdlib.h doesn't exist in clang's wasm sysroot, and cbindgen
  78         # doesn't actually use it anyway, so drop the import.
  79         sed -i '' 's/#include <stdlib.h>//g' include/lightning.h
  80 else
  81         sed -i 's/typedef LDKnative.*Import.*LDKnative.*;//g' include/lightning.h
  82
  83         # stdlib.h doesn't exist in clang's wasm sysroot, and cbindgen
  84         # doesn't actually use it anyway, so drop the import.
  85         sed -i 's/#include <stdlib.h>//g' include/lightning.h
  86 fi
  87
  88 # Finally, sanity-check the generated C and C++ bindings with demo apps:
  89
  90 LOCAL_CFLAGS="-Wall -Wno-nullability-completeness -pthread"
  91
  92 # Naively run the C demo app:
  93 gcc $LOCAL_CFLAGS -Wall -g -pthread demo.c target/debug/libldk.a -ldl
  94 ./a.out
  95
  96 # And run the C++ demo app in valgrind to test memory model correctness and lack of leaks.
  97 g++ $LOCAL_CFLAGS -std=c++11 -Wall -g -pthread demo.cpp -Ltarget/debug/ -lldk -ldl
  98 if [ -x "`which valgrind`" ]; then
  99         LD_LIBRARY_PATH=target/debug/ valgrind --error-exitcode=4 --memcheck:leak-check=full --show-leak-kinds=all ./a.out
 100         echo
 101 else
 102         echo "WARNING: Please install valgrind for more testing"
 103 fi
 104
 105 # Test a statically-linked C++ version, tracking the resulting binary size and runtime
 106 # across debug, LTO, and cross-language LTO builds (using the same compiler each time).
 107 clang++ $LOCAL_CFLAGS -std=c++11 demo.cpp target/debug/libldk.a -ldl
 108 strip ./a.out
 109 echo " C++ Bin size and runtime w/o optimization:"
 110 ls -lha a.out
 111 time ./a.out > /dev/null
 112
 113 # Then, check with memory sanitizer, if we're on Linux and have rustc nightly
 114 if [ "$HOST_PLATFORM" = "host: x86_64-unknown-linux-gnu" ]; then
 115         if cargo +nightly --version >/dev/null 2>&1; then
 116                 LLVM_V=$(rustc +nightly --version --verbose | grep "LLVM version" | awk '{ print substr($3, 0, 2); }')
 117                 if [ -x "$(which clang-$LLVM_V)" ]; then
 118                         cargo +nightly clean
 119                         cargo +nightly rustc -Zbuild-std --target x86_64-unknown-linux-gnu -v -- -Zsanitizer=memory -Zsanitizer-memory-track-origins -Cforce-frame-pointers=yes
 120                         mv target/x86_64-unknown-linux-gnu/debug/libldk.* target/debug/
 121
 122                         # Sadly, std doesn't seem to compile into something that is memsan-safe as of Aug 2020,
 123                         # so we'll always fail, not to mention we may be linking against git rustc LLVM which
 124                         # may differ from clang-llvm, so just allow everything here to fail.
 125                         set +e
 126
 127                         # First the C demo app...
 128                         clang-$LLVM_V $LOCAL_CFLAGS -fsanitize=memory -fsanitize-memory-track-origins -g demo.c target/debug/libldk.a -ldl
 129                         ./a.out
 130
 131                         # ...then the C++ demo app
 132                         clang++-$LLVM_V $LOCAL_CFLAGS -std=c++11 -fsanitize=memory -fsanitize-memory-track-origins -g demo.cpp target/debug/libldk.a -ldl
 133                         ./a.out >/dev/null
 134
 135                         # restore exit-on-failure
 136                         set -e
 137                 else
 138                         echo "WARNING: Can't use memory sanitizer without clang-$LLVM_V"
 139                 fi
 140         else
 141                 echo "WARNING: Can't use memory sanitizer without rustc nightly"
 142         fi
 143 else
 144         echo "WARNING: Can't use memory sanitizer on non-Linux, non-x86 platforms"
 145 fi
 146
 147 RUSTC_LLVM_V=$(rustc --version --verbose | grep "LLVM version" | awk '{ print substr($3, 0, 2); }' | tr -d '.')
 148
 149 if [ "$HOST_PLATFORM" = "host: x86_64-apple-darwin" ]; then
 150         # Apple is special, as always, and decided that they must ensure that there is no way to identify
 151         # the LLVM version used. Why? Just to make your life hard.
 152         # This list is taken from https://en.wikipedia.org/wiki/Xcode
 153         APPLE_CLANG_V=$(clang --version | head -n1 | awk '{ print $4 }')
 154         if [ "$APPLE_CLANG_V" = "10.0.0" ]; then
 155                 CLANG_LLVM_V="6"
 156         elif [ "$APPLE_CLANG_V" = "10.0.1" ]; then
 157                 CLANG_LLVM_V="7"
 158         elif [ "$APPLE_CLANG_V" = "11.0.0" ]; then
 159                 CLANG_LLVM_V="8"
 160         elif [ "$APPLE_CLANG_V" = "11.0.3" ]; then
 161                 CLANG_LLVM_V="9"
 162         elif [ "$APPLE_CLANG_V" = "12.0.0" ]; then
 163                 CLANG_LLVM_V="10"
 164         else
 165                 echo "WARNING: Unable to identify Apple clang LLVM version"
 166                 CLANG_LLVM_V="0"
 167         fi
 168 else
 169         CLANG_LLVM_V=$(clang --version | head -n1 | awk '{ print substr($4, 0, 2); }' | tr -d '.')
 170 fi
 171
 172 if [ "$CLANG_LLVM_V" = "$RUSTC_LLVM_V" ]; then
 173         CLANG=clang
 174         CLANGPP=clang++
 175 elif [ "$(which clang-$RUSTC_LLVM_V)" != "" ]; then
 176         CLANG="$(which clang-$RUSTC_LLVM_V)"
 177         CLANGPP="$(which clang++-$RUSTC_LLVM_V)"
 178 fi
 179
 180 if [ "$CLANG" != "" -a "$CLANGPP" = "" ]; then
 181         echo "WARNING: It appears you have a clang-$RUSTC_LLVM_V but not clang++-$RUSTC_LLVM_V. This is common, but leaves us unable to compile C++ with LLVM $RUSTC_LLVM_V"
 182         echo "You should create a symlink called clang++-$RUSTC_LLVM_V pointing to $CLANG in $(dirname $CLANG)"
 183 fi
 184
 185 # Finally, if we're on OSX or on Linux, build the final debug binary with address sanitizer (and leave it there)
 186 if [ "$HOST_PLATFORM" = "host: x86_64-unknown-linux-gnu" -o "$HOST_PLATFORM" = "host: x86_64-apple-darwin" ]; then
 187         if [ "$CLANGPP" != "" ]; then
 188                 if [ "$HOST_PLATFORM" = "host: x86_64-apple-darwin" ]; then
 189                         # OSX sed is for some reason not compatible with GNU sed
 190                         sed -i .bk 's/,"cdylib"]/]/g' Cargo.toml
 191                 else
 192                         sed -i.bk 's/,"cdylib"]/]/g' Cargo.toml
 193                 fi
 194                 RUSTC_BOOTSTRAP=1 cargo rustc -v -- -Zsanitizer=address -Cforce-frame-pointers=yes || ( mv Cargo.toml.bk Cargo.toml; exit 1)
 195                 mv Cargo.toml.bk Cargo.toml
 196
 197                 # First the C demo app...
 198                 $CLANG $LOCAL_CFLAGS -fsanitize=address -g demo.c target/debug/libldk.a -ldl
 199                 ASAN_OPTIONS='detect_leaks=1 detect_invalid_pointer_pairs=1 detect_stack_use_after_return=1' ./a.out
 200
 201                 # ...then the C++ demo app
 202                 $CLANGPP $LOCAL_CFLAGS -std=c++11 -fsanitize=address -g demo.cpp target/debug/libldk.a -ldl
 203                 ASAN_OPTIONS='detect_leaks=1 detect_invalid_pointer_pairs=1 detect_stack_use_after_return=1' ./a.out >/dev/null
 204         else
 205                 echo "WARNING: Please install clang-$RUSTC_LLVM_V and clang++-$RUSTC_LLVM_V to build with address sanitizer"
 206         fi
 207 else
 208         echo "WARNING: Can't use address sanitizer on non-Linux, non-OSX non-x86 platforms"
 209 fi
 210
 211 # Now build with LTO on on both C++ and rust, but without cross-language LTO:
 212 # Clear stale release build artifacts from previous runs
 213 cargo clean --release
 214 CARGO_PROFILE_RELEASE_LTO=true cargo rustc -v --release -- -C lto
 215 clang++ $LOCAL_CFLAGS -std=c++11 -flto -O2 demo.cpp target/release/libldk.a -ldl
 216
 217 if [ "$HOST_PLATFORM" != "host: x86_64-apple-darwin" -a "$CLANGPP" != "" ]; then
 218         # If we can use cross-language LTO, use it for building C dependencies (i.e. libsecp256k1) as well
 219         export CC="$CLANG"
 220         export CFLAGS_wasm32_wasi="-target wasm32"
 221 fi
 222
 223 if [ "$(rustc --print target-list | grep wasm32-wasi)" != "" ]; then
 224         # Test to see if clang supports wasm32 as a target (which is needed to build rust-secp256k1)
 225         echo "int main() {}" > genbindings_wasm_test_file.c
 226         clang -nostdlib -o /dev/null --target=wasm32-wasi -Wl,--no-entry genbindings_wasm_test_file.c > /dev/null 2>&1 &&
 227         # And if it does, build a WASM binary without capturing errors
 228         cargo rustc -v --target=wasm32-wasi -- -C embed-bitcode=yes &&
 229         # Now that we've done our last non-LTO build, turn on LTO in CFLAGS as well
 230         export CFLAGS="$CFLAGS -flto" &&
 231         CARGO_PROFILE_RELEASE_LTO=true cargo rustc -v --release --target=wasm32-wasi -- -C opt-level=s -C linker-plugin-lto -C lto ||
 232         echo "Cannot build WASM lib as clang does not seem to support the wasm32-wasi target"
 233         rm genbindings_wasm_test_file.c
 234 fi
 235
 236 strip ./a.out
 237 echo "C++ Bin size and runtime with only RL (LTO) optimized:"
 238 ls -lha a.out
 239 time ./a.out > /dev/null
 240
 241 if [ "$HOST_PLATFORM" != "host: x86_64-apple-darwin" -a "$CLANGPP" != "" ]; then
 242         # Finally, test cross-language LTO. Note that this will fail if rustc and clang++
 243         # build against different versions of LLVM (eg when rustc is installed via rustup
 244         # or Ubuntu packages). This should work fine on Distros which do more involved
 245         # packaging than simply shipping the rustup binaries (eg Debian should Just Work
 246         # here).
 247         export CFLAGS="$CFLAGS -flto"
 248         # Rust doesn't recognize CFLAGS changes, so we need to clean build artifacts
 249         cargo clean --release
 250         CARGO_PROFILE_RELEASE_LTO=true cargo rustc -v --release -- -C linker-plugin-lto -C lto -C link-arg=-fuse-ld=lld
 251         $CLANGPP $LOCAL_CFLAGS -flto -fuse-ld=lld -O2 demo.cpp target/release/libldk.a -ldl
 252         strip ./a.out
 253         echo "C++ Bin size and runtime with cross-language LTO:"
 254         ls -lha a.out
 255         time ./a.out > /dev/null
 256 else
 257         echo "WARNING: Building with cross-language LTO is not avilable on OSX or without clang-$RUSTC_LLVM_V"
 258 fi