libsodium/dist-build/emscripten.sh

#! /bin/sh

export PREFIX="$(pwd)/libsodium-js"
export EXPORTED_FUNCTIONS='["_crypto_aead_chacha20poly1305_abytes","_crypto_aead_chacha20poly1305_decrypt","_crypto_aead_chacha20poly1305_encrypt","_crypto_aead_chacha20poly1305_keybytes","_crypto_aead_chacha20poly1305_npubbytes","_crypto_aead_chacha20poly1305_nsecbytes","_crypto_auth","_crypto_auth_bytes","_crypto_auth_keybytes","_crypto_auth_verify","_crypto_box","_crypto_box_detached","_crypto_box_easy","_crypto_box_keypair","_crypto_box_macbytes","_crypto_box_noncebytes","_crypto_box_open","_crypto_box_open_detached","_crypto_box_open_easy","_crypto_box_publickeybytes","_crypto_box_secretkeybytes","_crypto_box_seed_keypair","_crypto_box_seedbytes","_crypto_generichash","_crypto_generichash_bytes","_crypto_generichash_bytes_max","_crypto_generichash_bytes_min","_crypto_generichash_final","_crypto_generichash_init","_crypto_generichash_keybytes","_crypto_generichash_keybytes_max","_crypto_generichash_keybytes_min","_crypto_generichash_update","_crypto_hash","_crypto_hash_bytes","_crypto_scalarmult","_crypto_scalarmult_base","_crypto_scalarmult_bytes","_crypto_scalarmult_scalarbytes","_crypto_secretbox","_crypto_secretbox_detached","_crypto_secretbox_easy","_crypto_secretbox_keybytes","_crypto_secretbox_macbytes","_crypto_secretbox_noncebytes","_crypto_secretbox_open","_crypto_secretbox_open_detached","_crypto_secretbox_open_easy","_crypto_shorthash","_crypto_shorthash_bytes","_crypto_shorthash_keybytes","_crypto_sign","_crypto_sign_bytes","_crypto_sign_detached","_crypto_sign_ed25519_pk_to_curve25519","_crypto_sign_ed25519_sk_to_curve25519","_crypto_sign_keypair","_crypto_sign_open","_crypto_sign_publickeybytes","_crypto_sign_secretkeybytes","_crypto_sign_seed_keypair","_crypto_sign_seedbytes","_crypto_sign_verify_detached","_randombytes","_randombytes_buf","_randombytes_close","_randombytes_random","_randombytes_set_implementation","_randombytes_stir","_randombytes_sysrandom","_randombytes_sysrandom_buf","_randombytes_sysrandom_close","_randombytes_sysrandom_stir","_randombytes_sysrandom_uniform","_randombytes_uniform","_sodium_bin2hex","_sodium_hex2bin","_sodium_init","_sodium_library_version_major","_sodium_library_version_minor","_sodium_memcmp","_sodium_memzero","_sodium_version_string"]'
export TOTAL_MEMORY=33554432
export OPTFLAGS="--llvm-lto 1 -Oz --emit-symbol-map"
export CFLAGS="$OPTFLAGS --pre-js=test/default/pre.js "
export LDFLAGS="-s EXPORTED_FUNCTIONS=${EXPORTED_FUNCTIONS} -s TOTAL_MEMORY=${TOTAL_MEMORY}"

emconfigure ./configure --enable-minimal --disable-shared --prefix="$PREFIX" && \
emmake make clean &&
emmake make install &&
emcc --closure 1 $OPTFLAGS $LDFLAGS \
  "${PREFIX}/lib/libsodium.a" -o "${PREFIX}/lib/libsodium.js"