6 if [ ! -d "$1/lightning" -o "$2" != "true" -a "$2" != "false" ]; then
7 echo "USAGE: $0 path-to-rust-lightning allow-std"
8 echo "allow-std must be either 'true' or 'false' to indicate if we should be built relying on time and pthread support"
14 # On reasonable systems, we can use realpath here, but OSX is a diva with 20-year-old software.
17 LIGHTNING_PATH="$(pwd)"
18 LIGHTNING_GIT="$(git describe --tag --dirty --abbrev=16)"
21 # Generate (and reasonably test) C bindings
23 # First we set various compiler flags...
24 HOST_PLATFORM="$(rustc --version --verbose | grep "host:")"
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"
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
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 $HOME/.cargo="
38 # If the C compiler supports it, also set -ffile-prefix-map
39 echo "int main() {}" > genbindings_path_map_test_file.c
40 clang -o /dev/null -ffile-prefix-map=$HOME/.cargo= genbindings_path_map_test_file.c > /dev/null 2>&1 &&
41 export BASE_CFLAGS="-ffile-prefix-map=$HOME/.cargo="
43 BASE_CFLAGS="$BASE_CFLAGS -frandom-seed=42"
44 LOCAL_CFLAGS="-Wall -Wno-nullability-completeness -pthread -Iinclude/"
47 if [ "$HOST_PLATFORM" = "host: x86_64-apple-darwin" ]; then
49 elif [ "$HOST_PLATFORM" = "host: aarch64-apple-darwin" ]; then
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"
63 rm genbindings_path_map_test_file.c
65 ENV_TARGET=$(rustc --version --verbose | grep host | awk '{ print $2 }' | sed 's/-/_/g')
68 export RUSTFLAGS="$BASE_RUSTFLAGS -C target-cpu=sandybridge"
69 export CFLAGS_$ENV_TARGET="$BASE_CFLAGS -march=sandybridge -mcpu=sandybridge -mtune=sandybridge"
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="$BASE_CFLAGS -mcpu=native"
78 # First build the latest c-bindings-gen binary
79 cd c-bindings-gen && cargo build --release && cd ..
81 # Then wipe all the existing C bindings (because we're being run in the right directory)
82 # note that we keep the few manually-generated files first:
83 mv lightning-c-bindings/src/c_types/mod.rs ./
84 mv lightning-c-bindings/src/bitcoin ./
86 # Before we try to sed the Cargo.toml, generate version define tags
87 # (ignoring any files that we're about to generate)
89 git checkout lightning-c-bindings/src
90 git checkout lightning-c-bindings/include
91 BINDINGS_GIT="$(git describe --tag --dirty --abbrev=16)"
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) {
98 if (n && *s1 != *s2) return 1;
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!
111 return _LDK_HEADER_VER;
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!
119 return _LDK_C_BINDINGS_HEADER_VER;
121 #endif /* _LDK_HEADER_VER */
123 )" > lightning-c-bindings/include/ldk_ver.h
125 rm -rf lightning-c-bindings/src
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/
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="$(pwd)/c-bindings-gen/target/release/c-bindings-gen"
138 function add_crate() {
139 pushd "$LIGHTNING_PATH/$1"
140 RUSTC_BOOTSTRAP=1 cargo rustc --profile=check --no-default-features $3 -- --cfg=c_bindings -Zunpretty=expanded > /tmp/$1-crate-source.txt
142 if [ "$HOST_OSX" = "true" ]; then
143 sed -i".original" "1i\\
145 " /tmp/$1-crate-source.txt
147 sed -i "1ipub mod $2 {\n" /tmp/$1-crate-source.txt
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
156 sed -E -i 's|#*'$1' = \{ .*|'$1' = \{ path = "'"$LIGHTNING_PATH"'/'$1'", default-features = false }|' lightning-c-bindings/Cargo.toml
160 function drop_crate() {
161 if [ "$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
165 sed -E -i 's|'$1' = \{ (.*)|#'$1' = \{ \1|' lightning-c-bindings/Cargo.toml
169 echo > /tmp/crate-source.txt
170 if [ "$2" = "true" ]; then
171 add_crate lightning lightning --features=std
172 add_crate "lightning-persister" "lightning_persister"
173 add_crate "lightning-background-processor" "lightning_background_processor"
174 add_crate "lightning-invoice" "lightning_invoice" --features=std
175 CARGO_BUILD_ARGS="--features=std"
177 add_crate lightning lightning --features=no-std
178 drop_crate "lightning-persister"
179 drop_crate "lightning-background-processor"
180 add_crate "lightning-invoice" "lightning_invoice" --features=no-std
181 CARGO_BUILD_ARGS="--features=no-std"
184 cat /tmp/crate-source.txt | RUST_BACKTRACE=1 "$BIN" "$OUT/" "$OUT_TEMPL" "$OUT_F" "$OUT_CPP"
188 pub extern "C" fn _ldk_get_compiled_version() -> crate::c_types::Str {
189 "${LIGHTNING_GIT}".into()
192 pub extern "C" fn _ldk_c_bindings_get_compiled_version() -> crate::c_types::Str {
193 "${BINDINGS_GIT}".into()
196 )" >> lightning-c-bindings/src/version.rs
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
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 $CARGO_BUILD_ARGS --target aarch64-apple-darwin
205 cbindgen -v --config cbindgen.toml -o include/lightning.h >/dev/null 2>&1
207 # cbindgen is relatively braindead when exporting typedefs -
208 # it happily exports all our typedefs for private types, even with the
209 # generics we specified in C mode! So we drop all those types manually here.
210 if [ "$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
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
218 sed -i 's/typedef LDKnative.*Import.*LDKnative.*;//g' include/lightning.h
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
225 # Build C++ class methods which call trait methods
226 set +x # Echoing every command is very verbose here
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
238 "#include <string.h>")
239 # We already printed this above.
242 # We already printed this above.
245 # We'll print this at the end
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 "}")"
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 $LINE"
259 RETVAL="$(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/')"
265 echo -e "\tinline $RETVAL $METHOD_NAME($PARAMS);" >> include/lightningpp_new.hpp
266 DECLS="$DECLS"$'\n'"inline $RETVAL $STRUCT_NAME::$METHOD_NAME($PARAMS) {"
268 DECLS="$DECLS"$'\n'$'\t'
269 [ "$RETVAL" != "void" ] && DECLS="$DECLS$RETVAL ret = "
270 DECLS="$DECLS(self.$METHOD_NAME)(self.this_arg"
272 IFS=','; for PARAM in $PARAMS; do
274 DECLS="$DECLS$(echo $PARAM | sed 's/.* (*\**\([a-zA-Z0-9_]*\)\()[\[0-9\]*]\)*/\1/')"
279 [ "$RETVAL" != "void" ] && DECLS="$DECLS"$'\n'$'\t'"return ret;"
280 DECLS="$DECLS"$'\n'"}"
283 echo "$LINE" >> include/lightningpp_new.hpp
285 done < include/lightningpp.hpp
286 echo "$DECLS" >> include/lightningpp_new.hpp
287 echo "}" >> include/lightningpp_new.hpp
288 export IFS="$OLD_IFS"
290 mv include/lightningpp_new.hpp include/lightningpp.hpp
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
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
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
312 echo "WARNING: Please install valgrind for more testing"
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++ $LOCAL_CFLAGS -std=c++11 demo.cpp target/debug/libldk.a -ldl
323 echo " C++ Bin size and runtime w/o optimization:"
325 time ./a.out > /dev/null
328 # Then, check with memory sanitizer, if we're on Linux and have rustc nightly
329 if [ "$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
334 cargo +nightly rustc $CARGO_BUILD_ARGS -Zbuild-std=std,panic_abort --target x86_64-unknown-linux-gnu -v -- -Zsanitizer=memory -Zsanitizer-memory-track-origins -Cforce-frame-pointers=yes
335 mv target/x86_64-unknown-linux-gnu/debug/libldk.* target/debug/
337 # Sadly, std doesn't seem to compile into something that is memsan-safe as of Aug 2020,
338 # so we'll always fail, not to mention we may be linking against git rustc LLVM which
339 # may differ from clang-llvm, so just allow everything here to fail.
342 # First the C demo app...
343 clang-$LLVM_V $LOCAL_CFLAGS -fsanitize=memory -fsanitize-memory-track-origins -g demo.c target/debug/libldk.a -ldl
346 if [ "$2" = "true" ]; then
347 # ...then the C++ demo app
348 clang++-$LLVM_V $LOCAL_CFLAGS -std=c++11 -fsanitize=memory -fsanitize-memory-track-origins -g demo.cpp target/debug/libldk.a -ldl
351 # ...then the C++ demo app with the ldk_net network implementation
352 clang-$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 $LOCAL_CFLAGS -std=c++11 -fsanitize=memory -fsanitize-memory-track-origins -g -DREAL_NET -I../ldk-net ldk_net.o demo.cpp target/debug/libldk.a -ldl
357 # restore exit-on-failure
360 echo "WARNING: Can't use memory sanitizer without clang-$LLVM_V"
363 echo "WARNING: Can't use memory sanitizer without rustc nightly"
366 echo "WARNING: Can't use memory sanitizer on non-Linux, non-x86 platforms"
369 RUSTC_LLVM_V=$(rustc --version --verbose | grep "LLVM version" | awk '{ print substr($3, 0, 2); }')
371 if [ "$HOST_OSX" = "true" ]; then
372 # Apple is special, as always, and their versions of clang aren't
373 # compatible with upstream LLVM.
374 if [ "$(clang --version | grep 'Apple clang')" != "" ]; then
375 echo "Apple clang isn't compatible with upstream clang, install upstream clang"
378 CLANG_LLVM_V=$(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($2, 0, 2); }')"
384 CLANG_LLVM_V=$(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($3, 0, 2); }')"
390 LLD_LLVM_V="$(ld.lld --version | awk '{ print substr($2, 0, 2); }')"
396 if [ "$CLANG_LLVM_V" = "$RUSTC_LLVM_V" ]; then
399 if [ "$LLD_LLVM_V" = "$CLANG_LLVM_V" ]; then
402 elif [ -x "$(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 $CLANGPP are not the same version of clang!"
410 if [ "$LLD_LLVM_V" != "$RUSTC_LLVM_V" ]; then
412 [ -x "$(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($3, 0, 2); }')"
417 LLD_LLVM_V="$(ld.lld-$RUSTC_LLVM_V --version | awk '{ print substr($2, 0, 2); }')"
419 if [ "$LLD_LLVM_V" != "$RUSTC_LLVM_V" ]; then
420 echo "Could not find a workable version of lld, not using cross-language LTO"
426 if [ "$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 $CLANG)"
431 # Finally, if we're on OSX or on Linux, build the final debug binary with address sanitizer (and leave it there)
432 if [ "$HOST_PLATFORM" = "host: x86_64-unknown-linux-gnu" -o "$HOST_PLATFORM" = "host: x86_64-apple-darwin" ]; then
433 if [ "$CLANGPP" != "" ]; then
434 if [ "$HOST_OSX" = "true" ]; then
435 # OSX sed is for some reason not compatible with GNU sed
436 sed -i .bk 's/,"cdylib"]/]/g' Cargo.toml
438 sed -i.bk 's/,"cdylib"]/]/g' Cargo.toml
440 if [ "$CFLAGS_aarch64_apple_darwin" != "" ]; then
441 RUSTFLAGS="$BASE_RUSTFLAGS -C target-cpu=apple-a14" RUSTC_BOOTSTRAP=1 cargo rustc $CARGO_BUILD_ARGS --target aarch64-apple-darwin -v -- -Zsanitizer=address -Cforce-frame-pointers=yes || ( mv Cargo.toml.bk Cargo.toml; exit 1)
443 RUSTFLAGS="$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
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
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
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 $LOCAL_CFLAGS -std=c++11 -fsanitize=address -g -DREAL_NET -I../ldk-net ldk_net.o demo.cpp target/debug/libldk.a -ldl
458 ASAN_OPTIONS='detect_leaks=1 detect_invalid_pointer_pairs=1 detect_stack_use_after_return=1' ./a.out >/dev/null
461 echo "WARNING: Please install clang-$RUSTC_LLVM_V and clang++-$RUSTC_LLVM_V to build with address sanitizer"
464 echo "WARNING: Can't use address sanitizer on non-Linux, non-OSX non-x86 platforms"
467 # Now build with LTO on on both C++ and rust, but without cross-language LTO:
468 # Clear stale release build artifacts from previous runs
469 cargo clean --release
470 CARGO_PROFILE_RELEASE_LTO=true RUSTFLAGS="$RUSTFLAGS -C embed-bitcode=yes -C lto" cargo build $CARGO_BUILD_ARGS -v --release
471 if [ "$2" = "true" ]; then
472 clang++ $LOCAL_CFLAGS -std=c++11 -O2 demo.cpp target/release/libldk.a -ldl
476 echo "C++ Bin size and runtime with only RL (LTO) optimized:"
478 time ./a.out > /dev/null
480 if [ "$CLANGPP" != "" ]; then
481 # If we can use cross-language LTO, use it for building C dependencies (i.e. libsecp256k1) as well
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
486 export CFLAGS_$ENV_TARGET="$BASE_CFLAGS -fPIC -fembed-bitcode -march=sandybridge -mcpu=sandybridge -mtune=sandybridge"
487 export CRATE_CC_NO_DEFAULTS=true
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
500 echo "Cannot build WASM lib as clang does not seem to support the wasm32-wasi target"
502 rm genbindings_wasm_test_file.c
505 EXTRA_TARGETS=( $LDK_C_BINDINGS_EXTRA_TARGETS )
506 EXTRA_CCS=( $LDK_C_BINDINGS_EXTRA_TARGET_CCS )
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!"
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[$IDX]}"
520 if [ "$CLANGPP" != "" -a "$LLD" != "" ]; then
521 # Finally, test cross-language LTO. Note that this will fail if rustc and clang++
522 # build against different versions of LLVM (eg when rustc is installed via rustup
523 # or Ubuntu packages). This should work fine on Distros which do more involved
524 # packaging than simply shipping the rustup binaries (eg Debian should Just Work
526 LINK_ARG_FLAGS="-C link-arg=-fuse-ld=$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"
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 $CARGO_BUILD_ARGS -v --release --target aarch64-apple-darwin
537 export CFLAGS_$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
542 if [ "$2" = "true" ]; then
543 $CLANGPP $LOCAL_CFLAGS -flto -fuse-ld=$LLD -O2 demo.cpp target/release/libldk.a -ldl
545 echo "C++ Bin size and runtime with cross-language LTO:"
547 time ./a.out > /dev/null
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 $CARGO_BUILD_ARGS -v --release --target aarch64-apple-darwin
553 echo "WARNING: Building with cross-language LTO is not avilable without clang-$RUSTC_LLVM_V"