i am trying to compile a fortran 90 program which has a call to POPCNT as follows:
...
print *, popcnt(127)
...
by compiling it as follows:
gfortran prog.f90
it gives me the following:
...: undefined reference to `popcnt_'
plz can anyone suggest the correct way of compiling? thanks.
support for bitcnt is added in version 4.6
http://gcc.gnu.org/wiki/GFortran#GCC4.6. So you have to find newer executable, or compile your own.
Related
I am new to using the Math Kernel Library(mkl). I have a program that uses a system-of-linear-equations-solver( gesv routine) of LAPACK (which comes with MKL). I already have MKL (also Intel Parallel Studio XE) installed on my computer. I am having trouble compiling/linking the code. I compile the code using:
ifort -mkl matrixinv.f90
However, it gives the following error
/tmp/ifortjcXZTm.o: In function `MAIN__':
matrixinv.f90:(.text+0xdf): undefined reference to `gesv_'
The code is attached below
PROGRAM matrixinv
IMPLICIT NONE
REAL(8),DIMENSION(3,3)::A,C
INTEGER(4),DIMENSION(3)::IPVT
REAL(8)::RCOND
REAL(8),DIMENSION(3)::V,B
A(1,1)=3.0_8
A(1,2)=2.0_8
A(1,3)=-1.0_8
A(2,1)=2.0_8
A(2,2)=-2.0_8
A(2,3)=4.0_8
A(3,1)=-1.0_8
A(3,2)=0.5_8
A(3,3)=-1.0_8
B(1)=1.0_8
B(2)=-2.0_8
B(3)=0.0_8
call gesv(A,B)
PRINT*,B
END PROGRAM matrixinv
You probably want to declare gesv as external. Add the following statement after the "implicit none":
external gesv
I am using gfortran compiler and ld linker in LINUX ubuntu 16.04.
When I am compiling some program written in Fortran 77, I have the following error message:
libdist.a(setup.F.o): In function `setup_':
setup.F:(.text+0x26c4): undefined reference to `mpi_send_'
setup.F:(.text+0x2b3c): undefined reference to `mpi_recv_'
setup.F:(.text+0x7984): undefined reference to `mpi_send_'
setup.F:(.text+0xb107): undefined reference to `mpi_recv_'
I guess it is about the position of error. However, it is difficult to me the find where is the error.
Can I have a better presentation of the position of error? Such as the c/cxx error: "setup.F:15:12: "
It is an address. And is is NOT a Fortran error. It is a linker error. You can get the very same error from a C or C++ code or any other compiled code linked by the same linker.
Generate debugging symbols (compiler option -g or -ggdb or similar - consult Debugging options in the GCC Fortran manual) to get something more meaningful. But if you do that you will realize that it only points you to some location where you do:
call mpi_send(...)
in some subroutine or function called setup().
So, it is not terribly useful in this case. The important thing is that you should link the appropriate MPI library. Normally that is done by calling mpif90 or mpifort or a similar wrapper which is called instead of gfortran. Consult the documentation of your MPI library implementation.
This is simple fortran90 program testing MPI.
I would like to compile it on MS Windows platform using MinGW64 Fortran and the known MS-MPI package.
However, it's not working due to missing "mpi.mod". When I replace the use mpi with include 'mpif.h', it's giving other errors (below).
Any help, please ? Does the MS-MPI suite cooperate with the MinGW gfortran ?
PS1:
Working with MS-MPI and MinGW gfortran is not an easy task, https://social.microsoft.com/Forums/en-US/245dcda4-7699-494f-bbe1-b76eb19e53da/linking-msmpi-with-mingw-gfortran?forum=windowshpcmpi
C:\Users\milias\Documents\Dirac\software\autocmake-devel\ms-mpi>gfortran -fno- range-check -c example.f90
mpif.h:344.38:
Included at example.f90:4:
PARAMETER (MPI_AINT=z'4c00043b')
1
Error: PARAMETER attribute of 'mpi_aint' conflicts with PARAMETER attribute at (1)
mpif.h:359.35:
Included at example.f90:4:
PARAMETER (MPI_ADDRESS_KIND=INT_PTR_KIND())
1
Error: Function 'int_ptr_kind' in initialization expression at (1) must be an intrinsic function
solved here, I apologize for the duplicate.
https://github.com/scisoft/autocmake/issues/85#issue-102874399
I would like to run a model is written Fortran90 under Ubuntu 14.04. I use gfortran 95 compiler (gfortran 4:4.8.2-1ubuntu6). The required netCDF libraries (netCDF C and Fortran netCDF) are installed as suggested in: http://www.unidata.ucar.edu/software/netcdf/docs/. The netcdf is built as shared library so libnetcdf.so and libnetcff.so files there are in the library directory. The libgfortran3 4.8.2-19ubuntu1 is installed for GNU fortran application linked against the shared library.
The LDFLAGS is set in the compiler_options.inc file by the following way:
INCDF=-I$(NCPATH)/include
LNCDF=-L$(NCPATH)/lib -lnetcdff -lnetcdf
LDFLAGS=$(INCDF) $(LNCDF)
When I compile the model I get the following messages:
/home/Beata/kid_a_setup/src/test_cases_2d.f90:1446: undefined reference to `_gfortran_runtime_error_at
Could someone explain me what causes the error and how I can fix it?
undefined reference to _gfortran_runtime_error_at means that the libgfortran library has not been found.
Either your system is misconfigured (can you compile, link and run a "Hello, world" program using gfortran?), or you are using the gcc command for linking instead of gfortran for linking. gcc does not know about the libgfortran library, where _gfortran_runtime_error_at is defined.
I am trying to build some code with G++4.8. Operating system is FreeBSD 9.2 64-bit.
These are the errors I get:
/usr/local/lib/gcc48/include/c++/tr1/hashtable_policy.h:384: undefined reference to `std::tr1::__detail::__prime_list'
/usr/local/lib/gcc48/include/c++/bits/stl_list.h:1570: undefined reference to `std::__detail::_List_node_base::_M_unhook()'
/usr/local/lib/gcc48/include/c++/bits/stl_list.h:1562: undefined reference to `std::__detail::_List_node_base::_M_hook(std::__detail::_List_node_base*)'
I read somewhere that those functions are in libstdc++. Reading this I've added that lib at my project, but I still get those errors. I should add libstdg++ instead? Or it's something else? I don't get it.
I've got the same errors when I linked the program using cc instead of gcc because of a misconfiguration of the Makefile program.