Hi. I'm trying of use the libmesh library in a project. When I compile a test file by hand, I use a command like this

Qt Code: 
  1. c++ -o foo foo.C `/mylib/libmesh-config --cxxflags --include --ldflags`
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when I use the --ldflags option

Qt Code: 
  1. /mylib/libmesh-config --ldflags
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I obtain something like this

Qt Code: 
  1. /mydir/lib/x86_64-unknown-linux-gnu_dbg/libmesh.so 
  2. /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/liblaspack.so 
  3. /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libparmetis.so 
  4. /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libmetis.so 
  5. /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libsfcurves.so 
  6. /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libgzstream.so -lz 
  7. /mydir/contrib/tecplot/lib/x86_64-unknown-linux-gnu/tecio.a 
  8. /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libgmv.so -Wl,-rpath,/usr/lib
  9.  -L/usr/lib -lvtkIO -lvtkCommon -lvtkFiltering -Wl,-rpath,/usr/lib 
  10.  -L/usr/lib -lglpk 
  11.  /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libtetgen.so 
  12.  /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libtriangle.so 
  13.  /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libexodusii.so 
  14.  /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libnetcdf.so 
  15.  /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libnemesis.so 
  16.  /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libHilbert.so -Wl,-rpath,/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib 
  17.  -L/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib -lpetsc -lX11 -Wl,-rpath,/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib 
  18.  -L/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib -lsuperlu_4.0 -lsuperlu_dist_2.4 -lparmetis -lmetis -lHYPRE -Wl,-rpath,/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.5.2 -Wl,-rpath,/usr/lib/x86_64-linux-gnu -lmpichcxx -lstdc++ -lspooles -lumfpack -lamd -lflapack -lfblas -lnsl -lrt -lm -Wl,-rpath,/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib -L/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib -Wl,-rpath,/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.5.2 -L/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.5.2 -Wl,-rpath,/usr/lib/x86_64-linux-gnu -L/usr/lib/x86_64-linux-gnu -ldl -lmpich -lpthread -lrt -lgcc_s -lmpichf90 -lgfortran -lm -lm -lmpichcxx -lstdc++ -ldl -lmpich -lpthread -lrt -lgcc_s -ldl -lnsl -lrt -Wl,-rpath,/mydir/lib/x86_64-unknown-linux-gnu_dbg -Wl,-rpath,/mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg -Wl,-rpath,/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib -Wl,-rpath,/mydir/lib/x86_64-unknown-linux-gnu_dbg -Wl,-rpath,/mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg -Wl,-rpath,/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib
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I add these libraries using this code in the .pro file

Qt Code: 
  1. ## Adding libraries ##
  2. unix {
  3.     TMPLIBS = $$system(/home/daniele/programs/libmesh-0.7.1/libmesh/contrib/bin/libmesh-config --ldflags)
  4.     LIBS += $$TMPLIBS
  5. }
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and, if I print the LIBS variable (using message command) I obtain:

Qt Code: 
  1. Project MESSAGE: LIBS = /mydir/lib/x86_64-unknown-linux-gnu_dbg/libmesh.so /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/liblaspack.so /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libparmetis.so /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libmetis.so /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libsfcurves.so /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libgzstream.so -lz /mydir/contrib/tecplot/lib/x86_64-unknown-linux-gnu/tecio.a /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libgmv.so -Wl,-rpath,/usr/lib -L/usr/lib -lvtkIO -lvtkCommon -lvtkFiltering -Wl,-rpath,/usr/lib -L/usr/lib -lglpk /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libtetgen.so /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libtriangle.so /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libexodusii.so /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libnetcdf.so /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libnemesis.so /mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg/libHilbert.so -Wl,-rpath,/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib -L/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib -lpetsc -lX11 -Wl,-rpath,/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib -L/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib -lsuperlu_4.0 -lsuperlu_dist_2.4 -lparmetis -lmetis -lHYPRE -Wl,-rpath,/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.5.2 -Wl,-rpath,/usr/lib/x86_64-linux-gnu -lmpichcxx -lstdc++ -lspooles -lumfpack -lamd -lflapack -lfblas -lnsl -lrt -lm -Wl,-rpath,/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib -L/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib -Wl,-rpath,/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.5.2 -L/usr/lib/x86_64-linux-gnu/gcc/x86_64-linux-gnu/4.5.2 -Wl,-rpath,/usr/lib/x86_64-linux-gnu -L/usr/lib/x86_64-linux-gnu -ldl -lmpich -lpthread -lrt -lgcc_s -lmpichf90 -lgfortran -lm -lm -lmpichcxx -lstdc++ -ldl -lmpich -lpthread -lrt -lgcc_s -ldl -lnsl -lrt -Wl,-rpath,/mydir/lib/x86_64-unknown-linux-gnu_dbg -Wl,-rpath,/mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg -Wl,-rpath,/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib -Wl,-rpath,/mydir/lib/x86_64-unknown-linux-gnu_dbg -Wl,-rpath,/mydir/contrib/lib/x86_64-unknown-linux-gnu_dbg -Wl,-rpath,/home/daniele/programs/petsc-3.1-p8/linux-gnu-dbg/lib
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But, in these case, it yet fails to load some library. Without this code, I got a lot of compiler error (about 50), while using this code errors (all of the type "undefined reference") are only 4, but not zero.

I've seen in the variale something like -rpath with commas around it, and I don't know what's this. I don't know if this is the cause of my error, and I'd like to know how insert all libraries in a correct way.

Thanks in advance for your reply