Good afternoon!

I would like to use OpenCL from Fortran host program using Focal.

I succeeded, using the following lines in Makefile,

. . .
FFLAGS  += -I/path_to_focal/focal/mod
OCL_LIB_FLAGS = -L/path_to_focal/focal/lib

FFLAGS  += -I/usr/local/cuda/include
OCL_LIB_FLAGS += -L/usr/local/cuda/lib64

. . .

$(FC) $(FFLAGS) -o $@ $(addprefix $(OBJDIR)/,$(OBJECTS)) -lstdc++ $(OCL_LIB_FLAGS) -lFocal -lOpenCL

and writing the needed program code. It worked perfectly for long time.

Now my colleagues decided to use CMake to produce the Makefile, and I don't know how to include Focal using CMake (my procedures are a part of the larger program written by my colleagues).

I tried

link_directories(/path_to_focal/focal/lib)

. . .

add_executable(OurTarget main.f)

. . .

find_package(CUDAToolkit)

set(Focal_INCLUDE_DIR "/path_to_focal/focal/mod")
target_include_directories(OurTarget PUBLIC ${Focal_INCLUDE_DIR})

. . .

target_link_libraries(OurTarget MAIN SOMETHING_OTHER Focal OpenCL)

CMake produced the Makefile, but I obtain the following errors during compilation:

/OurProjectPath/CLSetup.f:3:10:
    3 |       USE CLFortran
      |          1
Fatal Error: Cannot open module file ‘clfortran.mod’ for reading at (1): No such file or directory
compilation terminated

/OurProjectPath/CLSetup.f:4:10:

    4 |       USE Focal
      |          1
Fatal Error: Cannot open module file ‘focal.mod’ for reading at (1): No such file or directory
compilation terminated.

(there are two lines,

USE CLFortran
USE Focal

in CLSetup.f)

I also tried

add_compile_options(-I/path_to_focal/focal/mod/)

with the same result.

This is an additional information on Focal:

> ls /path_to_focal/focal/mod
clfortran.mod                focal@focal_memory.smod   focal@focal_setup.smod  futils_sorting.mod
focal@focal_debug.smod       focal@focal_nodebug.smod  focal@focal_utils.smod  m_strings.mod
focal@focal_error.smod       focal@focal_profile.smod  focal.mod
focal@focal_hostmemory.smod  focal@focal_query.smod    focal.smod

> ls /path_to_focal/focal/lib
libFocal.a  libFocaldbg.a

I understand, that the obtained errors are because the folder /path_to_focal/focal/mod is not accepted by CMake. But I don't know how to fix this. And I'm not sure about correct inclusion of the libraries.

If someone can help me, please, do this.

Regards, Natalia