require '_h2ph_pre.ph';

no warnings 'redefine';

unless(defined(&_SHA1_H_)) {
    eval 'sub _SHA1_H_ () {1;}' unless defined(&_SHA1_H_);
    eval 'sub SHA1_BLOCK_LENGTH () {64;}' unless defined(&SHA1_BLOCK_LENGTH);
    eval 'sub SHA1_DIGEST_LENGTH () {20;}' unless defined(&SHA1_DIGEST_LENGTH);
}
1;
