X-Recipient: archive-cygwin AT delorie DOT com X-SWARE-Spam-Status: No, hits=-2.7 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW X-Spam-Check-By: sourceware.org From: "Timothy Sliwinski" To: References: <4D489420 DOT 2070304 AT gmail DOT com> Subject: RE: gfortran, lapack, and cygwin [SOLVED] Date: Tue, 1 Feb 2011 19:51:12 -0500 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit In-Reply-To: <4D489420.2070304@gmail.com> X-IsSubscribed: yes Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Thanks everyone for replying. The liblapack-devel was definitely key and worked perfectly! Yay lapack! -Tim P.S. I will remember that naming tidbit in the future, David. I forgot that tool existed. -----Original Message----- From: David Billinghurst [mailto:dbcygwin AT gmail DOT com] Sent: Tuesday, February 01, 2011 6:16 PM To: Subject: Re: gfortran, lapack, and cygwin On 2/02/2011 8:41 AM, Timothy Sliwinski wrote: > Greetings all, > > I am having a particularly hard time getting lapack, gfortran and cygwin to > play nice. I installed the lapack packages under the math section of > setup.exe, however, when I go to use them with gfortran, I get errors saying > gfortran can't find the libraries. > > I am using the following command for my compilation: > > $ gfortran test.for -o test -llapack > > And the error I receive is > > /usr/lib/gcc/i686-pc-cygwin/4.3.4/../../../../i686-pc-cygwin/bin/ld: cannot > find > -llapack > collect2: ld returned 1 exit status You need to install the development library liblapack-devel. This provides /usr/lib/liblapack.dll.a and /usr/lib/libblas.dll.a, which are required to link applications that use the dynamic libraries cyglapack.dll and cygblas.dll. It also provides /usr/lib/liblapack.a and /usr/lib/libblas.a, which are used if you link statically. You need to link the BLAS routines by adding -lblas AFTER -llapack gfortran mytest.f90 -o mytest -llapack -lblas David PS: Bad practice to name a binary "test" on cygwin or any unix system, as there is a utility and also a bash builtin function with this name. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple