secp256k1.Dockerfile

# FROM trzeci/emscripten-slim:latest
FROM trzeci/emscripten-slim@sha256:e3cd9edf81c5d9cd78d2edf034ce6fcb2dccb35f1f5451e8ce75e5210bbbf036

RUN apt-get update \
  && apt-get install -y \
  autoconf \
  libtool \
  build-essential

COPY wasm /bitcoin-ts/wasm

WORKDIR /bitcoin-ts/wasm/secp256k1

RUN ./autogen.sh
RUN emconfigure ./configure --enable-module-recovery \
  # uncomment next line for debug build:
  # CFLAGS="-g -O0" 
  # uncomment next line for production build:
  CFLAGS="-O3" 
RUN emmake make FORMAT=wasm
RUN mkdir -p out/secp256k1

RUN emcc src/libsecp256k1_la-secp256k1.o \
  # uncomment next line for debug build:
  # -O0 -g4 -s ASSERTIONS=2 --source-map-base ../../../wasm/secp256k1 \
  # uncomment next line for production build:
  -O3 \
  -s WASM=1 \
  -s "BINARYEN_METHOD='native-wasm'" \
  -s NO_EXIT_RUNTIME=1 \
  -s DETERMINISTIC=1 \
  -s EXPORTED_FUNCTIONS='[ \
  "_malloc", \
  "_free", \
  "_secp256k1_context_create", \
  "_secp256k1_context_randomize", \
  "_secp256k1_ec_seckey_verify", \
  "_secp256k1_ec_pubkey_create", \
  "_secp256k1_ec_pubkey_parse", \
  "_secp256k1_ec_pubkey_serialize", \
  "_secp256k1_ecdsa_sign", \
  "_secp256k1_ecdsa_signature_malleate", \
  "_secp256k1_ecdsa_signature_normalize", \
  "_secp256k1_ecdsa_signature_parse_der", \
  "_secp256k1_ecdsa_signature_parse_compact", \
  "_secp256k1_ecdsa_signature_serialize_der", \
  "_secp256k1_ecdsa_signature_serialize_compact", \
  "_secp256k1_ecdsa_verify", \
  ]' \
  -o out/secp256k1/secp256k1.js

RUN OUTPUT_TS_FILE=out/secp256k1/secp256k1.base64.ts; printf "/**\n * @hidden\n */\n// prettier-ignore\nexport const secp256k1Base64Bytes =\n  '" > $OUTPUT_TS_FILE && base64 -w 0 out/secp256k1/secp256k1.wasm >> $OUTPUT_TS_FILE && printf "';\n" >> $OUTPUT_TS_FILE

RUN cp -r /bitcoin-ts/wasm/secp256k1/out /bitcoin-ts/bin

# copy outputs to mounted volume
CMD ["cp", "-r", "/bitcoin-ts/bin", "/bitcoin-ts/out"]