Check for OPENSSL_VERSION_AT_LEAST before using it.

As all useful things in the OpenSSL API, it is too new to be used
unconditionally. Ignore OpenSSL 1.1.0 compat for now until someone
complains.

diff --git a/libarchive/archive_cryptor.c b/libarchive/archive_cryptor.c
index 302cf712ab7883f47c3089cb068a8ab2bf742f7c..5d251f4215c224025570a1b784cd67b94582a9a5 100644 (file)
--- a/libarchive/archive_cryptor.c
+++ b/libarchive/archive_cryptor.c
@@ -316,7 +316,7 @@ aes_ctr_init(archive_crypto_ctx *ctx, const uint8_t *key, size_t key_len)
        memcpy(ctx->key, key, key_len);
        memset(ctx->nonce, 0, sizeof(ctx->nonce));
        ctx->encr_pos = AES_BLOCK_SIZE;
-#if OPENSSL_VERSION_AT_LEAST(1, 1)
+#if defined(OPENSSL_VERSION_AT_LEAST) && OPENSSL_VERSION_AT_LEAST(1, 1)
        if (!EVP_CIPHER_CTX_reset(ctx->ctx)) {
                EVP_CIPHER_CTX_free(ctx->ctx);
                ctx->ctx = NULL;