6 if [ ! -d "$1/lightning" ]; then
7 echo "USAGE: $0 path-to-rust-lightning"
10 LIGHTNING_PATH="$(realpath "$1/lightning")"
12 # Generate (and reasonably test) C bindings
14 # First build the latest c-bindings-gen binary
15 cd c-bindings-gen && cargo build --release && cd ..
17 # Then wipe all the existing C bindings (because we're being run in the right directory)
18 # note that we keep the few manually-generated files first:
19 mv lightning-c-bindings/src/c_types/mod.rs ./
20 mv lightning-c-bindings/src/bitcoin ./
22 rm -rf lightning-c-bindings/src
24 mkdir -p lightning-c-bindings/src/c_types/
25 mv ./mod.rs lightning-c-bindings/src/c_types/
26 mv ./bitcoin lightning-c-bindings/src/
28 # Finally, run the c-bindings-gen binary, building fresh bindings.
29 OUT="$(pwd)/lightning-c-bindings/src"
30 OUT_TEMPL="$(pwd)/lightning-c-bindings/src/c_types/derived.rs"
31 OUT_F="$(pwd)/lightning-c-bindings/include/rust_types.h"
32 OUT_CPP="$(pwd)/lightning-c-bindings/include/lightningpp.hpp"
33 BIN="$(pwd)/c-bindings-gen/target/release/c-bindings-gen"
35 pushd "$LIGHTNING_PATH"
36 RUSTC_BOOTSTRAP=1 cargo rustc --profile=check -- -Zunstable-options --pretty=expanded |
37 RUST_BACKTRACE=1 "$BIN" "$OUT/" lightning "$OUT_TEMPL" "$OUT_F" "$OUT_CPP"
40 HOST_PLATFORM="$(rustc --version --verbose | grep "host:")"
41 if [ "$HOST_PLATFORM" = "host: x86_64-apple-darwin" ]; then
42 # OSX sed is for some reason not compatible with GNU sed
43 sed -i '' 's|lightning = { .*|lightning = { path = "'"$LIGHTNING_PATH"'" }|' lightning-c-bindings/Cargo.toml
45 sed -i 's|lightning = { .*|lightning = { path = "'"$LIGHTNING_PATH"'" }|' lightning-c-bindings/Cargo.toml
48 # Now cd to lightning-c-bindings, build the generated bindings, and call cbindgen to build a C header file
49 PATH="$PATH:~/.cargo/bin"
50 cd lightning-c-bindings
52 cbindgen -v --config cbindgen.toml -o include/lightning.h >/dev/null 2>&1
54 # cbindgen is relatively braindead when exporting typedefs -
55 # it happily exports all our typedefs for private types, even with the
56 # generics we specified in C mode! So we drop all those types manually here.
57 if [ "$HOST_PLATFORM" = "host: x86_64-apple-darwin" ]; then
58 # OSX sed is for some reason not compatible with GNU sed
59 sed -i '' 's/typedef LDKnative.*Import.*LDKnative.*;//g' include/lightning.h
61 # stdlib.h doesn't exist in clang's wasm sysroot, and cbindgen
62 # doesn't actually use it anyway, so drop the import.
63 sed -i '' 's/#include <stdlib.h>//g' include/lightning.h
65 sed -i 's/typedef LDKnative.*Import.*LDKnative.*;//g' include/lightning.h
67 # stdlib.h doesn't exist in clang's wasm sysroot, and cbindgen
68 # doesn't actually use it anyway, so drop the import.
69 sed -i 's/#include <stdlib.h>//g' include/lightning.h
72 # Finally, sanity-check the generated C and C++ bindings with demo apps:
74 CFLAGS="-Wall -Wno-nullability-completeness -pthread"
76 # Naively run the C demo app:
77 gcc $CFLAGS -Wall -g -pthread demo.c target/debug/libldk.a -ldl
80 # And run the C++ demo app in valgrind to test memory model correctness and lack of leaks.
81 g++ $CFLAGS -std=c++11 -Wall -g -pthread demo.cpp -Ltarget/debug/ -lldk -ldl
82 if [ -x "`which valgrind`" ]; then
83 LD_LIBRARY_PATH=target/debug/ valgrind --error-exitcode=4 --memcheck:leak-check=full --show-leak-kinds=all ./a.out
86 echo "WARNING: Please install valgrind for more testing"
89 # Test a statically-linked C++ version, tracking the resulting binary size and runtime
90 # across debug, LTO, and cross-language LTO builds (using the same compiler each time).
91 clang++ $CFLAGS -std=c++11 demo.cpp target/debug/libldk.a -ldl
93 echo " C++ Bin size and runtime w/o optimization:"
95 time ./a.out > /dev/null
97 # Then, check with memory sanitizer, if we're on Linux and have rustc nightly
98 if [ "$HOST_PLATFORM" = "host: x86_64-unknown-linux-gnu" ]; then
99 if cargo +nightly --version >/dev/null 2>&1; then
100 LLVM_V=$(rustc +nightly --version --verbose | grep "LLVM version" | awk '{ print substr($3, 0, 2); }')
101 if [ -x "$(which clang-$LLVM_V)" ]; then
103 cargo +nightly rustc -Zbuild-std --target x86_64-unknown-linux-gnu -v -- -Zsanitizer=memory -Zsanitizer-memory-track-origins -Cforce-frame-pointers=yes
104 mv target/x86_64-unknown-linux-gnu/debug/libldk.* target/debug/
106 # Sadly, std doesn't seem to compile into something that is memsan-safe as of Aug 2020,
107 # so we'll always fail, not to mention we may be linking against git rustc LLVM which
108 # may differ from clang-llvm, so just allow everything here to fail.
111 # First the C demo app...
112 clang-$LLVM_V $CFLAGS -fsanitize=memory -fsanitize-memory-track-origins -g demo.c target/debug/libldk.a -ldl
115 # ...then the C++ demo app
116 clang++-$LLVM_V $CFLAGS -std=c++11 -fsanitize=memory -fsanitize-memory-track-origins -g demo.cpp target/debug/libldk.a -ldl
119 # restore exit-on-failure
122 echo "WARNING: Can't use memory sanitizer without clang-$LLVM_V"
125 echo "WARNING: Can't use memory sanitizer without rustc nightly"
128 echo "WARNING: Can't use memory sanitizer on non-Linux, non-x86 platforms"
131 RUSTC_LLVM_V=$(rustc --version --verbose | grep "LLVM version" | awk '{ print substr($3, 0, 2); }' | tr -d '.')
133 if [ "$HOST_PLATFORM" = "host: x86_64-apple-darwin" ]; then
134 # Apple is special, as always, and decided that they must ensure that there is no way to identify
135 # the LLVM version used. Why? Just to make your life hard.
136 # This list is taken from https://en.wikipedia.org/wiki/Xcode
137 APPLE_CLANG_V=$(clang --version | head -n1 | awk '{ print $4 }')
138 if [ "$APPLE_CLANG_V" = "10.0.0" ]; then
140 elif [ "$APPLE_CLANG_V" = "10.0.1" ]; then
142 elif [ "$APPLE_CLANG_V" = "11.0.0" ]; then
144 elif [ "$APPLE_CLANG_V" = "11.0.3" ]; then
146 elif [ "$APPLE_CLANG_V" = "12.0.0" ]; then
149 echo "WARNING: Unable to identify Apple clang LLVM version"
153 CLANG_LLVM_V=$(clang --version | head -n1 | awk '{ print substr($4, 0, 2); }' | tr -d '.')
156 if [ "$CLANG_LLVM_V" = "$RUSTC_LLVM_V" ]; then
159 elif [ "$(which clang-$RUSTC_LLVM_V)" != "" ]; then
160 CLANG="$(which clang-$RUSTC_LLVM_V)"
161 CLANGPP="$(which clang++-$RUSTC_LLVM_V)"
164 if [ "$CLANG" != "" -a "$CLANGPP" = "" ]; then
165 echo "WARNING: It appears you have a clang-$RUSTC_LLVM_V but not clang++-$RUSTC_LLVM_V. This is common, but leaves us unable to compile C++ with LLVM $RUSTC_LLVM_V"
166 echo "You should create a symlink called clang++-$RUSTC_LLVM_V pointing to $CLANG in $(dirname $CLANG)"
169 # Finally, if we're on OSX or on Linux, build the final debug binary with address sanitizer (and leave it there)
170 if [ "$HOST_PLATFORM" = "host: x86_64-unknown-linux-gnu" -o "$HOST_PLATFORM" = "host: x86_64-apple-darwin" ]; then
171 if [ "$CLANGPP" != "" ]; then
172 if [ "$HOST_PLATFORM" = "host: x86_64-apple-darwin" ]; then
173 # OSX sed is for some reason not compatible with GNU sed
174 sed -i .bk 's/,"cdylib"]/]/g' Cargo.toml
176 sed -i.bk 's/,"cdylib"]/]/g' Cargo.toml
178 RUSTC_BOOTSTRAP=1 cargo rustc -v -- -Zsanitizer=address -Cforce-frame-pointers=yes || ( mv Cargo.toml.bk Cargo.toml; exit 1)
179 mv Cargo.toml.bk Cargo.toml
181 # First the C demo app...
182 $CLANG $CFLAGS -fsanitize=address -g demo.c target/debug/libldk.a -ldl
183 ASAN_OPTIONS='detect_leaks=1 detect_invalid_pointer_pairs=1 detect_stack_use_after_return=1' ./a.out
185 # ...then the C++ demo app
186 $CLANGPP $CFLAGS -std=c++11 -fsanitize=address -g demo.cpp target/debug/libldk.a -ldl
187 ASAN_OPTIONS='detect_leaks=1 detect_invalid_pointer_pairs=1 detect_stack_use_after_return=1' ./a.out >/dev/null
189 echo "WARNING: Please install clang-$RUSTC_LLVM_V and clang++-$RUSTC_LLVM_V to build with address sanitizer"
192 echo "WARNING: Can't use address sanitizer on non-Linux, non-OSX non-x86 platforms"
195 if [ "$(rustc --print target-list | grep wasm32-wasi)" != "" ]; then
196 # Test to see if clang supports wasm32 as a target (which is needed to build rust-secp256k1)
197 echo "int main() {}" > genbindings_wasm_test_file.c
198 clang -nostdlib -o /dev/null --target=wasm32-wasi -Wl,--no-entry genbindings_wasm_test_file.c > /dev/null 2>&1 &&
199 # And if it does, build a WASM binary without capturing errors
200 cargo rustc -v --target=wasm32-wasi -- -C embed-bitcode=yes &&
201 CARGO_PROFILE_RELEASE_LTO=true cargo rustc -v --release --target=wasm32-wasi -- -C opt-level=s -C linker-plugin-lto -C lto ||
202 echo "Cannot build WASM lib as clang does not seem to support the wasm32-wasi target"
203 rm genbindings_wasm_test_file.c
206 # Now build with LTO on on both C++ and rust, but without cross-language LTO:
207 CARGO_PROFILE_RELEASE_LTO=true cargo rustc -v --release -- -C lto
208 clang++ $CFLAGS -std=c++11 -flto -O2 demo.cpp target/release/libldk.a -ldl
210 echo "C++ Bin size and runtime with only RL (LTO) optimized:"
212 time ./a.out > /dev/null
214 if [ "$HOST_PLATFORM" != "host: x86_64-apple-darwin" -a "$CLANGPP" != "" ]; then
215 # Finally, test cross-language LTO. Note that this will fail if rustc and clang++
216 # build against different versions of LLVM (eg when rustc is installed via rustup
217 # or Ubuntu packages). This should work fine on Distros which do more involved
218 # packaging than simply shipping the rustup binaries (eg Debian should Just Work
220 CARGO_PROFILE_RELEASE_LTO=true cargo rustc -v --release -- -C linker-plugin-lto -C lto -C link-arg=-fuse-ld=lld
221 $CLANGPP $CFLAGS -flto -fuse-ld=lld -O2 demo.cpp target/release/libldk.a -ldl
223 echo "C++ Bin size and runtime with cross-language LTO:"
225 time ./a.out > /dev/null
227 echo "WARNING: Building with cross-language LTO is not avilable on OSX or without clang-$RUSTC_LLVM_V"