$ emconfigure configure \
    --disable-all \
    --disable-mbregex \
    --disable-fiber-asm \
    --disable-cli \
    --disable-cgi \
    --disable-phpdbg \
    --without-iconv \
    --without-libxml \
    --without-pcre-jit \
    --without-pdo-sqlite \
    --without-sqlite3