3 echo "USAGE: path/to/ldk-c-bindings \"JNI_CFLAGS\" debug android"
4 echo "For JNI_CFLAGS you probably want -I/usr/lib/jvm/java-11-openjdk-amd64/include/ -I/usr/lib/jvm/java-11-openjdk-amd64/include/linux/"
5 echo "debug should either be true or false"
6 echo "android should either be true or false"
10 [ "$3" != "true" -a "$3" != "false" ] && usage
11 [ "$4" != "true" -a "$4" != "false" ] && usage
15 if [ "$CC" != "" ]; then
16 COMMON_COMPILE="$CC -std=c11 -Wall -Wextra -Wno-unused-parameter -Wno-ignored-qualifiers -Wno-unused-function -Wno-nullability-completeness -Wno-pointer-sign -Wdate-time -ffile-prefix-map=$(pwd)="
19 COMMON_COMPILE="clang -std=c11 -Wall -Wextra -Wno-unused-parameter -Wno-ignored-qualifiers -Wno-unused-function -Wno-nullability-completeness -Wno-pointer-sign -Wdate-time -ffile-prefix-map=$(pwd)="
22 TARGET_STRING="$LDK_TARGET"
23 if [ "$TARGET_STRING" = "" ]; then
24 # We assume clang-style $CC --version here, but worst-case we just get an empty suffix
25 TARGET_STRING="$($CC --version | grep Target | awk '{ print $2 }')"
27 case "$TARGET_STRING" in
29 LDK_TARGET_SUFFIX="_Linux-amd64"
32 "x86_64-apple-darwin"*)
33 LDK_TARGET_SUFFIX="_MacOSX-x86_64"
36 "aarch64-apple-darwin"*)
37 LDK_TARGET_SUFFIX="_MacOSX-aarch64"
41 LDK_TARGET_SUFFIX="_${TARGET_STRING}"
43 if [ "$LDK_TARGET_CPU" = "" ]; then
44 LDK_TARGET_CPU="sandybridge"
49 if [ "$LDK_GARBAGECOLLECTED_GIT_OVERRIDE" = "" ]; then
50 export LDK_GARBAGECOLLECTED_GIT_OVERRIDE=$(git describe --tag --dirty)
53 cp "$1/lightning-c-bindings/include/lightning.h" ./
54 if [ "$(rustc --version --verbose | grep "host:")" = "host: x86_64-apple-darwin" ]; then
55 # OSX sed is for some reason not compatible with GNU sed
56 sed -i '' "s/TransactionOutputs/C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZ/g" ./lightning.h
58 sed -i "s/TransactionOutputs/C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZ/g" ./lightning.h
61 echo "Creating Java bindings..."
62 mkdir -p src/main/java/org/ldk/{enums,structs}
63 rm -f src/main/java/org/ldk/{enums,structs}/*.java
64 rm -f src/main/jni/*.h
65 if [ "$4" = "true" ]; then
66 ./genbindings.py "./lightning.h" src/main/java/org/ldk/impl/bindings.java src/main/java/org/ldk src/main/jni/bindings.c.body $3 android $4
68 ./genbindings.py "./lightning.h" src/main/java/org/ldk/impl/bindings.java src/main/java/org/ldk src/main/jni/bindings.c.body $3 java $4
70 echo "#define LDKCVec_C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZZ LDKCVec_TransactionOutputsZ" > src/main/jni/bindings.c
71 echo "#define CVec_C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZZ_free CVec_TransactionOutputsZ_free" >> src/main/jni/bindings.c
72 cat src/main/jni/bindings.c.body >> src/main/jni/bindings.c
73 javac -h src/main/jni src/main/java/org/ldk/enums/*.java src/main/java/org/ldk/impl/bindings.java
74 rm src/main/java/org/ldk/enums/*.class src/main/java/org/ldk/impl/bindings*.class
77 [ "$($CC --version | grep apple-darwin)" != "" ] && IS_MAC=true
79 echo "Building Java bindings..."
80 COMPILE="$COMMON_COMPILE -mcpu=$LDK_TARGET_CPU -Isrc/main/jni -pthread -ldl -shared -fPIC"
81 [ "$IS_MAC" = "false" ] && COMPILE="$COMPILE -Wl,--no-undefined"
82 [ "$IS_MAC" = "true" ] && COMPILE="$COMPILE -mmacosx-version-min=10.9"
83 if [ "$3" = "true" ]; then
84 [ "$IS_MAC" = "false" ] && COMPILE="$COMPILE -Wl,-wrap,calloc -Wl,-wrap,realloc -Wl,-wrap,reallocarray -Wl,-wrap,malloc -Wl,-wrap,free"
85 $COMPILE -o liblightningjni_debug$LDK_TARGET_SUFFIX.so -g -fsanitize=address -shared-libasan -rdynamic -I"$1"/lightning-c-bindings/include/ $2 src/main/jni/bindings.c "$1"/lightning-c-bindings/target/$LDK_TARGET/debug/libldk.a -lm
87 LDK_LIB="$1"/lightning-c-bindings/target/$LDK_TARGET/release/libldk.a
88 if [ "$IS_MAC" = "false" ]; then
89 COMPILE="$COMPILE -Wl,--version-script=libcode.version -fuse-ld=lld"
90 echo "// __cxa_thread_atexit_impl is used to more effeciently cleanup per-thread local storage by rust libstd." >> src/main/jni/bindings.c
91 echo "// However, it is not available on glibc versions 2.17 or earlier, and rust libstd has a null-check and fallback in case it is missing." >> src/main/jni/bindings.c
92 echo "// Because it is weak-linked on the rust side, we should be able to simply define it explicitly here, forcing rust to use the fallback." >> src/main/jni/bindings.c
93 echo "void *__cxa_thread_atexit_impl = NULL;" >> src/main/jni/bindings.c
94 # Note that the above is not sufficient. For some reason involving ancient dark magic and
95 # haunted code segments, overriding the weak symbol only impacts sites which *call* the
96 # symbol in question, not sites which *compare with* the symbol in question.
97 # This means that the NULL check in rust's libstd will always think the function is
98 # callable while the function which is called ends up being NULL (leading to a jmp to the
99 # zero page and a quick SEGFAULT).
100 # This issue persists not only with directly providing a symbol, but also ld.lld's -wrap
101 # and --defsym arguments.
102 # In smaller programs, it appears to be possible to work around this with -Bsymbolic and
103 # -nostdlib, however when applied the full-sized JNI library here it no longer works.
104 # After exhausting nearly every flag documented in lld, the only reliable method appears
105 # to be editing the LDK binary. Luckily, LLVM's tooling makes this rather easy as we can
106 # disassemble it into very readable code, edit it, and then reassemble it.
107 [ ! -f "$1"/lightning-c-bindings/target/$LDK_TARGET/release/libldk.a ] && exit 1
108 if [ "$(ar t "$1"/lightning-c-bindings/target/$LDK_TARGET/release/libldk.a | grep -v "\.o$" || echo)" != "" ]; then
109 echo "Archive contained non-object files!"
112 if [ "$(ar t "$1"/lightning-c-bindings/target/$LDK_TARGET/release/libldk.a | grep ldk.ldk.*-cgu.*.rcgu.o | wc -l)" != "1" ]; then
113 echo "Archive contained more than one LDK object file"
118 ar x --output=tmp "$1"/lightning-c-bindings/target/$LDK_TARGET/release/libldk.a
120 llvm-dis ldk.ldk.*-cgu.*.rcgu.o
121 sed -i 's/br i1 icmp eq (i8\* @__cxa_thread_atexit_impl, i8\* null)/br i1 icmp eq (i8* null, i8* null)/g' ldk.ldk.*-cgu.*.rcgu.o.ll
122 llvm-as ldk.ldk.*-cgu.*.rcgu.o.ll -o ./libldk.bc
125 LDK_LIB="tmp/libldk.bc tmp/libldk.a"
127 $COMPILE -o liblightningjni_release$LDK_TARGET_SUFFIX.so -flto -O3 -I"$1"/lightning-c-bindings/include/ $2 src/main/jni/bindings.c $LDK_LIB
128 if [ "$IS_MAC" = "false" ]; then
129 GLIBC_SYMBS="$(objdump -T liblightningjni_release$LDK_TARGET_SUFFIX.so | grep GLIBC_ | grep -v "GLIBC_2\.2\." | grep -v "GLIBC_2\.3\(\.\| \)" | grep -v "GLIBC_2.\(14\|17\) " || echo)"
130 if [ "$GLIBC_SYMBS" != "" ]; then
131 echo "Unexpected glibc version dependency! Some users need glibc 2.17 support, symbols for newer glibcs cannot be included."
136 if [ "$LDK_JAR_TARGET" = "true" ]; then
137 # Copy to JNI native directory for inclusion in JARs
138 mkdir -p src/main/resources/
139 cp liblightningjni_release$LDK_TARGET_SUFFIX.so src/main/resources/liblightningjni$LDK_TARGET_SUFFIX.nativelib
143 echo "Creating TS bindings..."
144 mkdir -p ts/{enums,structs}
145 rm -f ts/{enums,structs}/*.ts
146 ./genbindings.py "./lightning.h" ts/bindings.ts ts ts/bindings.c.body $3 typescript
147 echo "#define LDKCVec_C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZZ LDKCVec_TransactionOutputsZ" > ts/bindings.c
148 echo "#define CVec_C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZZ_free CVec_TransactionOutputsZ_free" >> ts/bindings.c
149 cat ts/bindings.c.body >> ts/bindings.c
151 echo "Building TS bindings..."
152 COMPILE="$COMMON_COMPILE -flto -Wl,--no-entry -Wl,--export-dynamic -Wl,-allow-undefined -nostdlib --target=wasm32-wasi"
153 # We only need malloc and assert/abort, but for now just use WASI for those:
154 #EXTRA_LINK=/usr/lib/wasm32-wasi/libc.a
156 if [ "$3" = "true" ]; then
157 $COMPILE -o liblightningjs_debug.wasm -g -Wl,-wrap,calloc -Wl,-wrap,realloc -Wl,-wrap,reallocarray -Wl,-wrap,malloc -Wl,-wrap,free -I"$1"/lightning-c-bindings/include/ ts/bindings.c "$1"/lightning-c-bindings/target/wasm32-wasi/debug/libldk.a $EXTRA_LINK
159 $COMPILE -o liblightningjs_release.wasm -s -Os -I"$1"/lightning-c-bindings/include/ ts/bindings.c "$1"/lightning-c-bindings/target/wasm32-wasi/release/libldk.a $EXTRA_LINK