X-Spam-Check-By: sourceware.org Message-ID: <448423C0.7010708@cygwin.com> Date: Mon, 05 Jun 2006 08:29:52 -0400 From: "Larry Hall (Cygwin)" Reply-To: cygwin@cygwin.com User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8) Gecko/20051223 Fedora/1.5-0.2.fc4.remi Thunderbird/1.5 Mnenhy/0.7.3.0 MIME-Version: 1.0 To: cygwin@cygwin.com Subject: Re: How to use openssl in cygwin References: <008f01c68872$a244e070$ab01a8c0@loiscxf> In-Reply-To: <008f01c68872$a244e070$ab01a8c0@loiscxf> Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: 7bit Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com cxf wrote: > Hi,all: > I installed the Cygwin which is the Full version. > I write the Program as the following: > #include > int main() > { > EVP_MD_CTX md_ctx; > unsigned int result_size; > int rv; > rv = EVP_SignInit(&md_ctx, EVP_sha1()); > return rv; > } > > It is very simple,then I compile the program using the Cygwin(the file > name is example.c) > gcc -c example.c > gcc -lcrypto -o example example.o > > but the gcc give out the error: > undefined reference to '_EVP_sha1' > undefined reference to '_EVP_DigestInit' > > I have checked that the libcrypto.a is in the right way. > I doubt whether the libcrypto.a have the function: EVP_sha1 and > EVP_DigestInit. A rookie mistake. Your library is in the wrong place. Put it at the end, not the beginning of the line. > (I compile the example.c in Linux,It is OK!) That's a crutch that it's best not to make a habit of leaning on... -- Larry Hall http://www.rfk.com RFK Partners, Inc. (508) 893-9779 - RFK Office 838 Washington Street (508) 893-9889 - FAX Holliston, MA 01746 -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/