Add libsodium source

libsodium-1.0.18-RELEASE/dist-build/wasm32-wasi.sh

@@ -0,0 +1,49 @@
+#! /bin/sh
+
+if [ -z "$WASI_SYSROOT" ]; then
+  export WASI_SYSROOT="/opt/wasi-sysroot"
+fi
+
+export PATH="/usr/local/opt/llvm/bin:$PATH"
+
+export PREFIX="$(pwd)/libsodium-wasm32-wasi"
+
+mkdir -p $PREFIX || exit 1
+
+export CC="clang"
+export CFLAGS="-DED25519_NONDETERMINISTIC=1 --target=wasm32-wasi --sysroot=${WASI_SYSROOT} -O2"
+export LDFLAGS="-s -Wl,--no-threads"
+export NM="llvm-nm"
+export AR="llvm-ar"
+export RANLIB="llvm-ranlib"
+export STRIP="llvm-strip"
+
+make distclean > /dev/null
+
+grep -q -F -- 'wasi' build-aux/config.sub || \
+  sed -i -e 's/-nacl\*)/-nacl*|-wasi)/' build-aux/config.sub
+
+if [ "x$1" = "x--bench" ]; then
+  export BENCHMARKS=1
+  export CPPFLAGS="-DBENCHMARKS -DITERATIONS=100"
+fi
+
+if [ -n "$LIBSODIUM_MINIMAL_BUILD" ]; then
+  export LIBSODIUM_ENABLE_MINIMAL_FLAG="--enable-minimal"
+else
+  export LIBSODIUM_ENABLE_MINIMAL_FLAG=""
+fi
+
+./configure ${LIBSODIUM_ENABLE_MINIMAL_FLAG} \
+            --prefix="$PREFIX" --with-sysroot="$WASI_SYSROOT" \
+            --host=wasm32-wasi \
+            --disable-ssp --disable-shared || exit 1
+
+NPROCESSORS=$(getconf NPROCESSORS_ONLN 2>/dev/null || getconf _NPROCESSORS_ONLN 2>/dev/null)
+PROCESSORS=${NPROCESSORS:-3}
+
+if [ -z "$BENCHMARKS" ]; then
+  make -j${PROCESSORS} check && make install && make distclean > /dev/null
+else
+  make -j${PROCESSORS} && make check
+fi