<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Times New Roman; font-size: 12pt; color: #000000'>Thank for your reply Matt. I have tried to compile the src/dm/ao/examples/tutorials/ex2.c using the makefile provided in same directory. However I received the same error, i.e.<br><br>ld: cannot find -llapack<br>make: [ex2] Error 1 (ignored)<br><br>Please note that I was able to compile and run this example successfully before the an update was done on the system.<br><br>I wanted to get some idea as to the cause of this link error. This way I have something to ask the team at Purdue to look into.<br><br>Thank you<br>Irfan<br><br><br>----- Original Message -----<br>From: "Matthew Knepley" <knepley@gmail.com><br>To: "PETSc users list" <petsc-users@mcs.anl.gov><br>Sent: Friday, August 7, 2009 7:37:06 PM GMT -05:00 US/Canada Eastern<br>Subject: Re: PETSC_LIB<br><br>The easiest way to link correctly is to use the PETSc makefile format:<br><br>prog: file1.o file2.o<br> ${CLINKER} -o prog file1.o file2.o ${PETSC_SNES_LIB}<br><br> Matt<br><br><div class="gmail_quote">On Fri, Aug 7, 2009 at 6:17 PM, <span dir="ltr"><<a href="mailto:irfan.khan@gatech.edu" target="_blank">irfan.khan@gatech.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi<br>
I have been compiling and running my Petsc code on a TERAGRID cluster (Steele - Purdue) for sometime now. Recently they made changes to their operating system and also installed a clean version of Petsc (it now makes use of MPICH-2 instead of MPICH).<br>
<br>
However my make file is not successfully linking anymore. The error message I get is as follows.<br>
<br>
ld: cannot find -llapack<br>
make: *** [te] Error 1<br>
<br>
I see that the blaslapack package is not available under "externalpackages" directory. I presume the link error is because the lapack library is included in the PETSC_LIB command and this library may not have been installed during PETSc installation. I say this because the make file works fine on my laptop where I have installed blas-lapack during PETSc installation. Please correct me if I am wrong.<br>
<br>
How can I resolve this link error? Kindly suggest.<br>
<br>
<br>
Thank you<br>
Irfan<br>
<font color="#888888">--<br>
PhD Candidate<br>
G.W. Woodruff School of Mechanical Engineering<br>
Georgia Institute of Technology<br>
Atlanta, GA (30332)<br>
</font></blockquote></div><br><br clear="all"><br>-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener<br>
<br><br>-- <br>PhD Candidate<br>G.W. Woodruff School of Mechanical Engineering<br>Georgia Institute of Technology<br>Atlanta, GA (30332)<br></div></body></html>