You can try with: LDFLAGS="-L */opt/intel/composer_xe_2013_sp1.0.080/compiler/lib/intel64"* in your configure line (or wherever libintlc.so.5 is). LD_LIBRARY_PATH is to find them at runtime, while LDFLAGS does it at compile time. Antonio On Thursday, September 05, 2013 05:33:12 PM Seungbum Koo wrote: I hope this to be the last question. While configuring, I see a warning message as follows from "config.log". =============================================== =======ld: warning: libintlc.so.5, needed by /opt/intel/composer_xe_2013_sp1.0.080/compiler/lib/intel64/libifport.so.5, not found (try using -rpath or -rpath- link)============================================ ========== I googled a bit and found out that this is about an intel library issue. And it says about $LD_LIBRARY_PATH and so on. Well, but my $LD_LIBRARY_PATH has the directory where "libintlc.so.5" is. =============================================== =======simba@asterix:/opt/mpich/mpich-3.0.4-build$ echo $LD_LIBRARY_PATH */opt/intel/composer_xe_2013_sp1.0.080/compiler/lib/intel64*:/opt/intel/co mposer_xe_2013_sp1.0.080/mpirt/lib/intel64:/opt/intel/composer_xe_2013_s p1.0.080/ipp/../compiler/lib/intel64:/opt/intel/composer_xe_2013_sp1.0.080/ ipp/lib/intel64:/opt/intel/composer_xe_2013_sp1.0.080/compiler/lib/intel64:/ opt/intel/composer_xe_2013_sp1.0.080/mkl/lib/intel64:/opt/intel/composer_ xe_2013_sp1.0.080/tbb/lib/intel64/gcc4.4simba@asterix:/opt/mpich/mpich-3 .0.4- build$=========================================== =========== If I go on to "make", then it shows following warnings from the screen. =============================================== =======ld: warning: libimf.so, needed by /opt/mpich/mpich-3.0.4- build/src/mpl/.libs/libmpl.so, not found (try using -rpath or -rpath-link)ld: warning: libsvml.so, needed by /opt/mpich/mpich-3.0.4- build/src/mpl/.libs/libmpl.so, not found (try using -rpath or -rpath-link)ld: warning: libirng.so, needed by /opt/mpich/mpich-3.0.4- build/src/mpl/.libs/libmpl.so, not found (try using -rpath or -rpath-link)ld: warning: libintlc.so.5, needed by /opt/mpich/mpich-3.0.4- build/src/mpl/.libs/libmpl.so, not found (try using -rpath or -rpath- link)============================================ ========== If I keep proceed and install MPICH, "mpiexec" seems to work. I tested with "cpi" in example. The problem is, when I try to install PETSc, it complains about the same issue (missing those *.so(.5) files) and don't configure any more. I tried "--download-mpich=1" option from PETSc without installing MPICH separately, but the result was the same. It keeps complaining those missing(?) files, which are actually in */opt/intel/composer_xe_2013_sp1.0.080/compiler/lib/intel64* directory. Does anyone has an idea what else can I do? Seungbum -- Antonio J. Peña Postdoctoral Appointee Mathematics and Computer Science Division Argonne National Laboratory 9700 South Cass Avenue, Bldg. 240, Of. 3148 Argonne, IL 60439-4847 (+1) 630-252-7928 [email protected] www.mcs.anl.gov/~apenya