MigFlow-Installation.md

@@ -67,7 +67,7 @@ Otherwise, follow the instructions bellow to compile it from sources.
       b. Compiling options for PETSc:
 
                 cd petsc
-                ./configure --with-mpi=0 -with-mpi=0 COPTFLAGS="-O3" --with-fc=0 --with-cxx=0 --with-debugging=0 --download-petsc4py=1
+                ./configure --with-debugging=0 --with-shared-libraries=1 COPTFLAGS="-O2" FOPTFLAGS="-O2" CXXOPTFLAGS="-O2" --with-mpi=0 --with-petsc4py=yes --with-fortran=0
 
       c. Compile PETSc: