Hi, I am new to petsc and slepc. Right now I am trying to compile ex1.c (http://acts.nersc.gov/slepc/example1/ex1.c.html) in Eclipse. I specified the paths of include files and libraries, but the compiler/linker still complained about undefined references.
The following is the error message: make all Building file: ../ex1.c Invoking: GCC C Compiler gcc -I/usr/include/slepc -I/usr/include/petsc -I/usr/include/mpi -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"ex1.d" -MT"ex1.d" -o"ex1.o" "../ex1.c" Finished building: ../ex1.c Building target: slepc-ex1 Invoking: GCC C Linker gcc -L/usr/lib/slepc -L/usr/lib/petsc -o"slepc-ex1" ./ex1.o ./ex1.o: In function `main': /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:43: undefined reference to `SlepcInitialize' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:45: undefined reference to `PetscOptionsGetInt' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:45: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:46: undefined reference to `PETSC_COMM_WORLD' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:46: undefined reference to `PetscPrintf' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:46: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:52: undefined reference to `PETSC_COMM_WORLD' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:52: undefined reference to `MatCreate' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:52: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:53: undefined reference to `MatSetSizes' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:53: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:54: undefined reference to `MatSetFromOptions' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:54: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:56: undefined reference to `MatGetOwnershipRange' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:56: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:62: undefined reference to `MatSetValues' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:62: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:66: undefined reference to `MatSetValues' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:66: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:70: undefined reference to `MatSetValues' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:70: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:73: undefined reference to `MatAssemblyBegin' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:73: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:74: undefined reference to `MatAssemblyEnd' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:74: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:76: undefined reference to `MatGetVecs' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:76: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:77: undefined reference to `MatGetVecs' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:77: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:85: undefined reference to `PETSC_COMM_WORLD' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:85: undefined reference to `EPSCreate' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:85: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:90: undefined reference to `EPSSetOperators' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:90: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:91: undefined reference to `EPSSetProblemType' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:91: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:96: undefined reference to `EPSSetFromOptions' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:96: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:102: undefined reference to `EPSSolve' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:102: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:106: undefined reference to `EPSGetIterationNumber' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:106: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:107: undefined reference to `PETSC_COMM_WORLD' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:107: undefined reference to `PetscPrintf' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:107: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:108: undefined reference to `EPSGetType' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:108: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:109: undefined reference to `PETSC_COMM_WORLD' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:109: undefined reference to `PetscPrintf' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:109: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:110: undefined reference to `EPSGetDimensions' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:110: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:111: undefined reference to `PETSC_COMM_WORLD' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:111: undefined reference to `PetscPrintf' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:111: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:112: undefined reference to `EPSGetTolerances' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:112: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:113: undefined reference to `PETSC_COMM_WORLD' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:113: undefined reference to `PetscPrintf' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:113: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:121: undefined reference to `EPSGetConverged' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:121: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:122: undefined reference to `PETSC_COMM_WORLD' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:122: undefined reference to `PetscPrintf' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:122: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:128: undefined reference to `PETSC_COMM_WORLD' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:128: undefined reference to `PetscPrintf' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:130: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:137: undefined reference to `EPSGetEigenpair' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:137: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:141: undefined reference to `EPSComputeRelativeError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:141: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:151: undefined reference to `PETSC_COMM_WORLD' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:151: undefined reference to `PetscPrintf' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:151: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:153: undefined reference to `PETSC_COMM_WORLD' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:153: undefined reference to `PetscPrintf' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:153: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:156: undefined reference to `PETSC_COMM_WORLD' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:156: undefined reference to `PetscPrintf' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:156: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:162: undefined reference to `EPSDestroy' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:162: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:163: undefined reference to `MatDestroy' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:163: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:164: undefined reference to `VecDestroy' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:164: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:165: undefined reference to `VecDestroy' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:165: undefined reference to `PetscError' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:166: undefined reference to `SlepcFinalize' /home/wdg/Dropbox/dev/slepc-ex1/Debug/../ex1.c:166: undefined reference to `PetscError' collect2: ld returned 1 exit status make: *** [slepc-ex1] Error 1 Regards, Wu Degang
